tron@2186: /* $Id$ */
tron@2186: 
rubidium@10429: /** @file viewport.cpp Handling of all viewports.
rubidium@10217:  *
rubidium@10217:  * \verbatim
rubidium@10217:  * The in-game coordinate system looks like this *
rubidium@10217:  *                                               *
rubidium@10217:  *                    ^ Z                        *
rubidium@10217:  *                    |                          *
rubidium@10217:  *                    |                          *
rubidium@10217:  *                    |                          *
rubidium@10217:  *                    |                          *
rubidium@10217:  *                 /     \                       *
rubidium@10217:  *              /           \                    *
rubidium@10217:  *           /                 \                 *
rubidium@10217:  *        /                       \              *
rubidium@10217:  *   X <                             > Y         *
rubidium@10217:  * \endverbatim
rubidium@10217:  */
belugas@6443: 
truelight@0: #include "stdafx.h"
Darkvater@1891: #include "openttd.h"
tron@1299: #include "debug.h"
rubidium@8615: #include "tile_cmd.h"
tron@2662: #include "gui.h"
tron@1349: #include "spritecache.h"
maedhros@6949: #include "landscape.h"
rubidium@8720: #include "viewport_func.h"
rubidium@9281: #include "station_base.h"
truelight@0: #include "town.h"
rubidium@9286: #include "signs_base.h"
rubidium@9286: #include "signs_func.h"
truelight@1542: #include "waypoint.h"
tron@2159: #include "variables.h"
bjarni@2676: #include "train.h"
maedhros@7353: #include "roadveh.h"
rubidium@7982: #include "vehicle_gui.h"
truelight@7433: #include "blitter/factory.hpp"
belugas@8345: #include "transparency.h"
rubidium@8610: #include "strings_func.h"
rubidium@8619: #include "zoom_func.h"
rubidium@8640: #include "vehicle_func.h"
rubidium@8750: #include "player_func.h"
rubidium@8766: #include "settings_type.h"
rubidium@9281: #include "station_func.h"
rubidium@10164: #include "core/alloc_type.hpp"
skidd13@11019: #include "core/smallvec_type.hpp"
rubidium@10435: #include "window_func.h"
rubidium@10445: #include "tilehighlight_func.h"
rubidium@10596: #include "window_gui.h"
rubidium@10202: 
rubidium@8760: #include "table/sprites.h"
rubidium@8760: #include "table/strings.h"
rubidium@8760: 
rubidium@8720: PlaceProc *_place_proc;
rubidium@8720: Point _tile_fract_coords;
truelight@7120: ZoomLevel _saved_scrollpos_zoom;
truelight@7120: 
rubidium@6574: struct StringSpriteToDraw {
truelight@0: 	uint16 string;
truelight@0: 	uint16 color;
tron@849: 	int32 x;
tron@849: 	int32 y;
rubidium@7502: 	uint64 params[2];
truelight@0: 	uint16 width;
rubidium@6574: };
rubidium@6574: 
rubidium@6574: struct TileSpriteToDraw {
peter1138@5919: 	SpriteID image;
peter1138@5919: 	SpriteID pal;
rubidium@8177: 	const SubSprite *sub;           ///< only draw a rectangular part of the sprite
tron@849: 	int32 x;
tron@849: 	int32 y;
truelight@0: 	byte z;
rubidium@6574: };
rubidium@6574: 
rubidium@6574: struct ChildScreenSpriteToDraw {
peter1138@5919: 	SpriteID image;
peter1138@5919: 	SpriteID pal;
rubidium@8177: 	const SubSprite *sub;           ///< only draw a rectangular part of the sprite
tron@849: 	int32 x;
tron@849: 	int32 y;
frosch@10984: 	int next;                       ///< next child to draw (-1 at the end)
rubidium@6574: };
rubidium@6574: 
rubidium@6574: struct ParentSpriteToDraw {
belugas@8065: 	SpriteID image;                 ///< sprite to draw
belugas@8065: 	SpriteID pal;                   ///< palette to use
rubidium@8177: 	const SubSprite *sub;           ///< only draw a rectangular part of the sprite
belugas@8065: 
rubidium@8076: 	int32 x;                        ///< screen X coordinate of sprite
rubidium@8076: 	int32 y;                        ///< screen Y coordinate of sprite
rubidium@8076: 
belugas@8065: 	int32 left;                     ///< minimal screen X coordinate of sprite (= x + sprite->x_offs), reference point for child sprites
belugas@8065: 	int32 top;                      ///< minimal screen Y coordinate of sprite (= y + sprite->y_offs), reference point for child sprites
belugas@8065: 
belugas@8065: 	int32 xmin;                     ///< minimal world X coordinate of bounding box
belugas@8065: 	int32 xmax;                     ///< maximal world X coordinate of bounding box
belugas@8065: 	int32 ymin;                     ///< minimal world Y coordinate of bounding box
belugas@8065: 	int32 ymax;                     ///< maximal world Y coordinate of bounding box
rubidium@8076: 	int zmin;                       ///< minimal world Z coordinate of bounding box
rubidium@8076: 	int zmax;                       ///< maximal world Z coordinate of bounding box
belugas@8065: 
rubidium@10208: 	int first_child;                ///< the first child to draw.
rubidium@8076: 	bool comparison_done;           ///< Used during sprite sorting: true if sprite has been compared with all other sprites
rubidium@6574: };
truelight@0: 
rubidium@8265: /* Enumeration of multi-part foundations */
rubidium@8265: enum FoundationPart {
rubidium@8265: 	FOUNDATION_PART_NONE     = 0xFF,  ///< Neither foundation nor groundsprite drawn yet.
rubidium@8265: 	FOUNDATION_PART_NORMAL   = 0,     ///< First part (normal foundation or no foundation)
rubidium@8265: 	FOUNDATION_PART_HALFTILE = 1,     ///< Second part (halftile foundation)
rubidium@8265: 	FOUNDATION_PART_END
rubidium@8265: };
rubidium@8265: 
peter1138@10205: typedef SmallVector<TileSpriteToDraw, 64> TileSpriteToDrawVector;
peter1138@10205: typedef SmallVector<StringSpriteToDraw, 4> StringSpriteToDrawVector;
rubidium@10207: typedef SmallVector<ParentSpriteToDraw, 64> ParentSpriteToDrawVector;
rubidium@10207: typedef SmallVector<ParentSpriteToDraw*, 64> ParentSpriteToSortVector;
rubidium@10208: typedef SmallVector<ChildScreenSpriteToDraw, 16> ChildScreenSpriteToDrawVector;
rubidium@10202: 
rubidium@6574: struct ViewportDrawer {
truelight@0: 	DrawPixelInfo dpi;
truelight@193: 
rubidium@10202: 	StringSpriteToDrawVector string_sprites_to_draw;
rubidium@10203: 	TileSpriteToDrawVector tile_sprites_to_draw;
rubidium@10207: 	ParentSpriteToDrawVector parent_sprites_to_draw;
rubidium@10207: 	ParentSpriteToSortVector parent_sprites_to_sort;
rubidium@10208: 	ChildScreenSpriteToDrawVector child_screen_sprites_to_draw;
rubidium@10208: 
rubidium@10208: 	int *last_child;
truelight@0: 
truelight@0: 	byte combine_sprites;
truelight@0: 
rubidium@10208: 	int foundation[FOUNDATION_PART_END];             ///< Foundation sprites (index into parent_sprites_to_draw).
rubidium@10208: 	FoundationPart foundation_part;                  ///< Currently active foundation for ground sprite drawing.
rubidium@10208: 	int *last_foundation_child[FOUNDATION_PART_END]; ///< Tail of ChildSprite list of the foundations. (index into child_screen_sprites_to_draw)
rubidium@10208: 	Point foundation_offset[FOUNDATION_PART_END];    ///< Pixeloffset for ground sprites on the foundations.
rubidium@6574: };
truelight@0: 
rubidium@10209: static ViewportDrawer _vd;
truelight@0: 
tron@1863: TileHighlightData _thd;
truelight@0: static TileInfo *_cur_ti;
rubidium@10239: bool _draw_bounding_boxes = false;
truelight@0: 
tron@2116: static Point MapXYZToViewport(const ViewPort *vp, uint x, uint y, uint z)
truelight@0: {
truelight@0: 	Point p = RemapCoords(x, y, z);
tron@2116: 	p.x -= vp->virtual_width / 2;
tron@2116: 	p.y -= vp->virtual_height / 2;
truelight@0: 	return p;
truelight@0: }
truelight@0: 
Darkvater@5122: void DeleteWindowViewport(Window *w)
Darkvater@5122: {
glx@10504: 	free(w->viewport);
Darkvater@5122: 	w->viewport = NULL;
Darkvater@5122: }
Darkvater@5122: 
rubidium@10255: /**
rubidium@10255:  * Initialize viewport of the window for use.
rubidium@10255:  * @param w Window to use/display the viewport in
rubidium@10255:  * @param x Offset of left edge of viewport with respect to left edge window \a w
rubidium@10255:  * @param y Offset of top edge of viewport with respect to top edge window \a w
rubidium@10255:  * @param width Width of the viewport
rubidium@10255:  * @param height Height of the viewport
rubidium@10255:  * @param follow_flags Flags controlling the viewport.
rubidium@10255:  *        - If bit 31 is set, the lower 16 bits are the vehicle that the viewport should follow.
rubidium@10255:  *        - If bit 31 is clear, it is a tile position.
rubidium@10255:  * @param zoom Zoomlevel to display
rubidium@10255:  */
rubidium@10257: void InitializeWindowViewport(Window *w, int x, int y,
truelight@7120: 	int width, int height, uint32 follow_flags, ZoomLevel zoom)
truelight@0: {
rubidium@10217: 	assert(w->viewport == NULL);
rubidium@10217: 
glx@10504: 	ViewportData *vp = CallocT<ViewportData>(1);
truelight@0: 
truelight@0: 	vp->left = x + w->left;
truelight@0: 	vp->top = y + w->top;
truelight@0: 	vp->width = width;
truelight@0: 	vp->height = height;
truelight@193: 
truelight@0: 	vp->zoom = zoom;
truelight@0: 
truelight@7150: 	vp->virtual_width = ScaleByZoom(width, zoom);
truelight@7150: 	vp->virtual_height = ScaleByZoom(height, zoom);
truelight@0: 
rubidium@10217: 	Point pt;
rubidium@10217: 
truelight@0: 	if (follow_flags & 0x80000000) {
tron@2116: 		const Vehicle *veh;
tron@2116: 
glx@10504: 		vp->follow_vehicle = (VehicleID)(follow_flags & 0xFFFF);
glx@10504: 		veh = GetVehicle(vp->follow_vehicle);
truelight@0: 		pt = MapXYZToViewport(vp, veh->x_pos, veh->y_pos, veh->z_pos);
truelight@0: 	} else {
celestar@3421: 		uint x = TileX(follow_flags) * TILE_SIZE;
celestar@3421: 		uint y = TileY(follow_flags) * TILE_SIZE;
tron@2116: 
glx@10504: 		vp->follow_vehicle = INVALID_VEHICLE;
tron@2116: 		pt = MapXYZToViewport(vp, x, y, GetSlopeZ(x, y));
truelight@0: 	}
truelight@0: 
glx@10504: 	vp->scrollpos_x = pt.x;
glx@10504: 	vp->scrollpos_y = pt.y;
glx@10504: 	vp->dest_scrollpos_x = pt.x;
glx@10504: 	vp->dest_scrollpos_y = pt.y;
peter1138@7226: 
truelight@0: 	w->viewport = vp;
truelight@0: 	vp->virtual_left = 0;//pt.x;
truelight@0: 	vp->virtual_top = 0;//pt.y;
truelight@0: }
truelight@0: 
truelight@0: static Point _vp_move_offs;
truelight@0: 
Darkvater@5137: static void DoSetViewportPosition(Window* const *wz, int left, int top, int width, int height)
truelight@0: {
Darkvater@5124: 
Darkvater@5124: 	for (; wz != _last_z_window; wz++) {
Darkvater@5124: 		const Window *w = *wz;
Darkvater@5124: 
truelight@0: 		if (left + width > w->left &&
tron@2116: 				w->left + w->width > left &&
truelight@0: 				top + height > w->top &&
tron@2116: 				w->top + w->height > top) {
truelight@193: 
truelight@0: 			if (left < w->left) {
Darkvater@5124: 				DoSetViewportPosition(wz, left, top, w->left - left, height);
Darkvater@5124: 				DoSetViewportPosition(wz, left + (w->left - left), top, width - (w->left - left), height);
truelight@0: 				return;
truelight@0: 			}
truelight@0: 
truelight@0: 			if (left + width > w->left + w->width) {
Darkvater@5124: 				DoSetViewportPosition(wz, left, top, (w->left + w->width - left), height);
Darkvater@5124: 				DoSetViewportPosition(wz, left + (w->left + w->width - left), top, width - (w->left + w->width - left) , height);
truelight@0: 				return;
truelight@0: 			}
truelight@0: 
truelight@0: 			if (top < w->top) {
Darkvater@5124: 				DoSetViewportPosition(wz, left, top, width, (w->top - top));
Darkvater@5124: 				DoSetViewportPosition(wz, left, top + (w->top - top), width, height - (w->top - top));
truelight@0: 				return;
truelight@0: 			}
truelight@0: 
truelight@0: 			if (top + height > w->top + w->height) {
Darkvater@5124: 				DoSetViewportPosition(wz, left, top, width, (w->top + w->height - top));
Darkvater@5124: 				DoSetViewportPosition(wz, left, top + (w->top + w->height - top), width , height - (w->top + w->height - top));
truelight@0: 				return;
truelight@0: 			}
truelight@0: 
truelight@0: 			return;
truelight@0: 		}
truelight@0: 	}
truelight@0: 
truelight@0: 	{
truelight@0: 		int xo = _vp_move_offs.x;
truelight@0: 		int yo = _vp_move_offs.y;
truelight@0: 
truelight@0: 		if (abs(xo) >= width || abs(yo) >= height) {
truelight@0: 			/* fully_outside */
tron@2116: 			RedrawScreenRect(left, top, left + width, top + height);
truelight@0: 			return;
truelight@0: 		}
truelight@0: 
truelight@0: 		GfxScroll(left, top, width, height, xo, yo);
truelight@0: 
truelight@0: 		if (xo > 0) {
truelight@0: 			RedrawScreenRect(left, top, xo + left, top + height);
truelight@0: 			left += xo;
truelight@0: 			width -= xo;
truelight@0: 		} else if (xo < 0) {
truelight@0: 			RedrawScreenRect(left+width+xo, top, left+width, top + height);
truelight@0: 			width += xo;
truelight@0: 		}
truelight@0: 
truelight@0: 		if (yo > 0) {
truelight@0: 			RedrawScreenRect(left, top, width+left, top + yo);
truelight@0: 		} else if (yo < 0) {
truelight@0: 			RedrawScreenRect(left, top + height + yo, width+left, top + height);
truelight@0: 		}
truelight@0: 	}
truelight@0: }
truelight@0: 
belugas@4171: static void SetViewportPosition(Window *w, int x, int y)
truelight@0: {
truelight@0: 	ViewPort *vp = w->viewport;
truelight@0: 	int old_left = vp->virtual_left;
truelight@0: 	int old_top = vp->virtual_top;
truelight@0: 	int i;
truelight@0: 	int left, top, width, height;
truelight@0: 
truelight@0: 	vp->virtual_left = x;
truelight@0: 	vp->virtual_top = y;
truelight@0: 
smatz@8401: 	/* viewport is bound to its left top corner, so it must be rounded down (UnScaleByZoomLower)
smatz@8401: 	 * else glitch described in FS#1412 will happen (offset by 1 pixel with zoom level > NORMAL)
smatz@8401: 	 */
smatz@8401: 	old_left = UnScaleByZoomLower(old_left, vp->zoom);
smatz@8401: 	old_top = UnScaleByZoomLower(old_top, vp->zoom);
smatz@8401: 	x = UnScaleByZoomLower(x, vp->zoom);
smatz@8401: 	y = UnScaleByZoomLower(y, vp->zoom);
truelight@0: 
truelight@0: 	old_left -= x;
truelight@0: 	old_top -= y;
truelight@0: 
tron@2116: 	if (old_top == 0 && old_left == 0) return;
truelight@0: 
truelight@0: 	_vp_move_offs.x = old_left;
truelight@0: 	_vp_move_offs.y = old_top;
truelight@0: 
truelight@0: 	left = vp->left;
truelight@0: 	top = vp->top;
truelight@0: 	width = vp->width;
truelight@0: 	height = vp->height;
truelight@0: 
truelight@0: 	if (left < 0) {
truelight@0: 		width += left;
truelight@0: 		left = 0;
truelight@0: 	}
truelight@0: 
tron@2116: 	i = left + width - _screen.width;
tron@2116: 	if (i >= 0) width -= i;
truelight@0: 
truelight@0: 	if (width > 0) {
truelight@0: 		if (top < 0) {
truelight@0: 			height += top;
truelight@0: 			top = 0;
truelight@0: 		}
truelight@193: 
tron@2116: 		i = top + height - _screen.height;
tron@2116: 		if (i >= 0) height -= i;
truelight@0: 
Darkvater@5124: 		if (height > 0) DoSetViewportPosition(FindWindowZPosition(w) + 1, left, top, width, height);
truelight@0: 	}
truelight@0: }
truelight@0: 
rubidium@10255: /**
rubidium@10255:  * Is a xy position inside the viewport of the window?
rubidium@10255:  * @param w Window to examine its viewport
rubidium@10255:  * @param x X coordinate of the xy position
rubidium@10255:  * @param y Y coordinate of the xy position
rubidium@10255:  * @return Pointer to the viewport if the xy position is in the viewport of the window,
rubidium@10255:  *         otherwise \c NULL is returned.
rubidium@10255:  */
tron@2116: ViewPort *IsPtInWindowViewport(const Window *w, int x, int y)
truelight@0: {
truelight@0: 	ViewPort *vp = w->viewport;
tron@2116: 
truelight@0: 	if (vp != NULL &&
belugas@9058: 			IsInsideMM(x, vp->left, vp->left + vp->width) &&
skidd13@8450: 			IsInsideMM(y, vp->top, vp->top + vp->height))
truelight@0: 		return vp;
truelight@0: 
truelight@0: 	return NULL;
truelight@0: }
truelight@0: 
tron@2116: static Point TranslateXYToTileCoord(const ViewPort *vp, int x, int y)
tron@1095: {
truelight@0: 	Point pt;
truelight@0: 	int a,b;
Darkvater@5014: 	uint z;
truelight@0: 
truelight@0: 	if ( (uint)(x -= vp->left) >= (uint)vp->width ||
truelight@0: 				(uint)(y -= vp->top) >= (uint)vp->height) {
truelight@0: 				Point pt = {-1, -1};
truelight@0: 				return pt;
truelight@0: 	}
truelight@0: 
truelight@7122: 	x = (ScaleByZoom(x, vp->zoom) + vp->virtual_left) >> 2;
truelight@7122: 	y = (ScaleByZoom(y, vp->zoom) + vp->virtual_top) >> 1;
truelight@0: 
truelight@0: 	a = y-x;
truelight@0: 	b = y+x;
truelight@0: 
Darkvater@5014: 	/* we need to move variables in to the valid range, as the
Darkvater@5014: 	 * GetTileZoomCenterWindow() function can call here with invalid x and/or y,
Darkvater@5014: 	 * when the user tries to zoom out along the sides of the map */
skidd13@8418: 	a = Clamp(a, 0, (int)(MapMaxX() * TILE_SIZE) - 1);
skidd13@8418: 	b = Clamp(b, 0, (int)(MapMaxY() * TILE_SIZE) - 1);
Darkvater@5014: 
rubidium@8260: 	/* (a, b) is the X/Y-world coordinate that belongs to (x,y) if the landscape would be completely flat on height 0.
rubidium@8260: 	 * Now find the Z-world coordinate by fix point iteration.
rubidium@8260: 	 * This is a bit tricky because the tile height is non-continuous at foundations.
rubidium@8260: 	 * The clicked point should be approached from the back, otherwise there are regions that are not clickable.
rubidium@8260: 	 * (FOUNDATION_HALFTILE_LOWER on SLOPE_STEEP_S hides north halftile completely)
rubidium@8260: 	 * So give it a z-malus of 4 in the first iterations.
rubidium@8260: 	 */
rubidium@8260: 	z = 0;
rubidium@8260: 	for (int i = 0; i < 5; i++) z = GetSlopeZ(a + max(z, 4u) - 4, b + max(z, 4u) - 4) / 2;
rubidium@8260: 	for (uint malus = 3; malus > 0; malus--) z = GetSlopeZ(a + max(z, malus) - malus, b + max(z, malus) - malus) / 2;
rubidium@8260: 	for (int i = 0; i < 5; i++) z = GetSlopeZ(a + z, b + z) / 2;
Darkvater@5014: 
Darkvater@5014: 	pt.x = a + z;
Darkvater@5014: 	pt.y = b + z;
truelight@0: 
truelight@0: 	return pt;
truelight@0: }
truelight@0: 
darkvater@981: /* When used for zooming, check area below current coordinates (x,y)
darkvater@981:  * and return the tile of the zoomed out/in position (zoom_x, zoom_y)
darkvater@981:  * when you just want the tile, make x = zoom_x and y = zoom_y */
darkvater@981: static Point GetTileFromScreenXY(int x, int y, int zoom_x, int zoom_y)
truelight@193: {
truelight@0: 	Window *w;
truelight@0: 	ViewPort *vp;
truelight@0: 	Point pt;
truelight@193: 
truelight@193: 	if ( (w = FindWindowFromPt(x, y)) != NULL &&
truelight@0: 			 (vp = IsPtInWindowViewport(w, x, y)) != NULL)
darkvater@981: 				return TranslateXYToTileCoord(vp, zoom_x, zoom_y);
truelight@0: 
truelight@0: 	pt.y = pt.x = -1;
truelight@0: 	return pt;
truelight@0: }
truelight@0: 
rubidium@6573: Point GetTileBelowCursor()
truelight@0: {
darkvater@981: 	return GetTileFromScreenXY(_cursor.pos.x, _cursor.pos.y, _cursor.pos.x, _cursor.pos.y);
truelight@0: }
truelight@0: 
darkvater@152: 
darkvater@152: Point GetTileZoomCenterWindow(bool in, Window * w)
truelight@0: {
truelight@0: 	int x, y;
glx@10504: 	ViewPort *vp = w->viewport;
darkvater@152: 
tron@2026: 	if (in) {
tron@2116: 		x = ((_cursor.pos.x - vp->left) >> 1) + (vp->width >> 2);
tron@2116: 		y = ((_cursor.pos.y - vp->top) >> 1) + (vp->height >> 2);
tron@2116: 	} else {
darkvater@152: 		x = vp->width - (_cursor.pos.x - vp->left);
darkvater@152: 		y = vp->height - (_cursor.pos.y - vp->top);
truelight@0: 	}
darkvater@981: 	/* Get the tile below the cursor and center on the zoomed-out center */
darkvater@981: 	return GetTileFromScreenXY(_cursor.pos.x, _cursor.pos.y, x + vp->left, y + vp->top);
truelight@0: }
truelight@0: 
Darkvater@5045: /** Update the status of the zoom-buttons according to the zoom-level
Darkvater@5045:  * of the viewport. This will update their status and invalidate accordingly
belugas@6939:  * @param w Window pointer to the window that has the zoom buttons
Darkvater@5045:  * @param vp pointer to the viewport whose zoom-level the buttons represent
Darkvater@5045:  * @param widget_zoom_in widget index for window with zoom-in button
Darkvater@5045:  * @param widget_zoom_out widget index for window with zoom-out button */
Darkvater@5045: void HandleZoomMessage(Window *w, const ViewPort *vp, byte widget_zoom_in, byte widget_zoom_out)
Darkvater@5045: {
rubidium@8493: 	w->SetWidgetDisabledState(widget_zoom_in, vp->zoom == ZOOM_LVL_MIN);
glx@8524: 	w->InvalidateWidget(widget_zoom_in);
Darkvater@5045: 
rubidium@8493: 	w->SetWidgetDisabledState(widget_zoom_out, vp->zoom == ZOOM_LVL_MAX);
glx@8524: 	w->InvalidateWidget(widget_zoom_out);
Darkvater@5045: }
Darkvater@5045: 
rubidium@8177: /**
rubidium@8177:  * Draws a ground sprite at a specific world-coordinate.
rubidium@8177:  *
rubidium@8177:  * @param image the image to draw.
rubidium@8177:  * @param pal the provided palette.
rubidium@8177:  * @param x position x of the sprite.
rubidium@8177:  * @param y position y of the sprite.
rubidium@8177:  * @param z position z of the sprite.
rubidium@8177:  * @param sub Only draw a part of the sprite.
rubidium@8177:  *
rubidium@8177:  */
rubidium@8177: void DrawGroundSpriteAt(SpriteID image, SpriteID pal, int32 x, int32 y, byte z, const SubSprite *sub)
truelight@0: {
celestar@2187: 	assert((image & SPRITE_MASK) < MAX_SPRITES);
truelight@0: 
rubidium@10209: 	TileSpriteToDraw *ts = _vd.tile_sprites_to_draw.Append();
peter1138@10205: 	ts->image = image;
peter1138@10205: 	ts->pal = pal;
peter1138@10205: 	ts->sub = sub;
peter1138@10205: 	ts->x = x;
peter1138@10205: 	ts->y = y;
peter1138@10205: 	ts->z = z;
truelight@0: }
truelight@0: 
rubidium@8177: /**
rubidium@8222:  * Adds a child sprite to the active foundation.
rubidium@8222:  *
rubidium@8222:  * The pixel offset of the sprite relative to the ParentSprite is the sum of the offset passed to OffsetGroundSprite() and extra_offs_?.
rubidium@8222:  *
rubidium@8222:  * @param image the image to draw.
rubidium@8222:  * @param pal the provided palette.
rubidium@8222:  * @param sub Only draw a part of the sprite.
rubidium@8265:  * @param foundation_part Foundation part.
rubidium@8222:  * @param extra_offs_x Pixel X offset for the sprite position.
rubidium@8222:  * @param extra_offs_y Pixel Y offset for the sprite position.
rubidium@8222:  */
rubidium@8265: static void AddChildSpriteToFoundation(SpriteID image, SpriteID pal, const SubSprite *sub, FoundationPart foundation_part, int extra_offs_x, int extra_offs_y)
rubidium@8222: {
skidd13@8450: 	assert(IsInsideMM(foundation_part, 0, FOUNDATION_PART_END));
rubidium@10209: 	assert(_vd.foundation[foundation_part] != -1);
rubidium@10209: 	Point offs = _vd.foundation_offset[foundation_part];
rubidium@8222: 
rubidium@8222: 	/* Change the active ChildSprite list to the one of the foundation */
rubidium@10209: 	int *old_child = _vd.last_child;
rubidium@10209: 	_vd.last_child = _vd.last_foundation_child[foundation_part];
rubidium@8222: 
rubidium@8222: 	AddChildSpriteScreen(image, pal, offs.x + extra_offs_x, offs.y + extra_offs_y, false, sub);
rubidium@8222: 
rubidium@8222: 	/* Switch back to last ChildSprite list */
rubidium@10209: 	_vd.last_child = old_child;
rubidium@8222: }
rubidium@8222: 
rubidium@8222: /**
rubidium@8177:  * Draws a ground sprite for the current tile.
rubidium@8177:  * If the current tile is drawn on top of a foundation the sprite is added as child sprite to the "foundation"-ParentSprite.
rubidium@8177:  *
rubidium@8177:  * @param image the image to draw.
rubidium@8177:  * @param pal the provided palette.
rubidium@8177:  * @param sub Only draw a part of the sprite.
rubidium@8177:  */
rubidium@8177: void DrawGroundSprite(SpriteID image, SpriteID pal, const SubSprite *sub)
truelight@0: {
rubidium@8265: 	/* Switch to first foundation part, if no foundation was drawn */
rubidium@10209: 	if (_vd.foundation_part == FOUNDATION_PART_NONE) _vd.foundation_part = FOUNDATION_PART_NORMAL;
rubidium@10209: 
rubidium@10209: 	if (_vd.foundation[_vd.foundation_part] != -1) {
rubidium@10209: 		AddChildSpriteToFoundation(image, pal, sub, _vd.foundation_part, 0, 0);
truelight@0: 	} else {
rubidium@8177: 		DrawGroundSpriteAt(image, pal, _cur_ti->x, _cur_ti->y, _cur_ti->z, sub);
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: 
rubidium@8222: /**
rubidium@8222:  * Called when a foundation has been drawn for the current tile.
rubidium@8222:  * Successive ground sprites for the current tile will be drawn as child sprites of the "foundation"-ParentSprite, not as TileSprites.
rubidium@8222:  *
rubidium@8222:  * @param x sprite x-offset (screen coordinates) of ground sprites relative to the "foundation"-ParentSprite.
rubidium@8222:  * @param y sprite y-offset (screen coordinates) of ground sprites relative to the "foundation"-ParentSprite.
rubidium@8222:  */
truelight@0: void OffsetGroundSprite(int x, int y)
truelight@0: {
rubidium@8265: 	/* Switch to next foundation part */
rubidium@10209: 	switch (_vd.foundation_part) {
rubidium@8265: 		case FOUNDATION_PART_NONE:
rubidium@10209: 			_vd.foundation_part = FOUNDATION_PART_NORMAL;
rubidium@8265: 			break;
rubidium@8265: 		case FOUNDATION_PART_NORMAL:
rubidium@10209: 			_vd.foundation_part = FOUNDATION_PART_HALFTILE;
rubidium@8265: 			break;
rubidium@8265: 		default: NOT_REACHED();
rubidium@8265: 	}
rubidium@8222: 
rubidium@10209: 	/* _vd.last_child == NULL if foundation sprite was clipped by the viewport bounds */
skidd13@11017: 	if (_vd.last_child != NULL) _vd.foundation[_vd.foundation_part] = _vd.parent_sprites_to_draw.Length() - 1;
rubidium@10209: 
rubidium@10209: 	_vd.foundation_offset[_vd.foundation_part].x = x;
rubidium@10209: 	_vd.foundation_offset[_vd.foundation_part].y = y;
rubidium@10209: 	_vd.last_foundation_child[_vd.foundation_part] = _vd.last_child;
truelight@0: }
truelight@0: 
rubidium@8177: /**
rubidium@8177:  * Adds a child sprite to a parent sprite.
rubidium@8177:  * In contrast to "AddChildSpriteScreen()" the sprite position is in world coordinates
rubidium@8177:  *
rubidium@8177:  * @param image the image to draw.
rubidium@8177:  * @param pal the provided palette.
rubidium@8177:  * @param x position x of the sprite.
rubidium@8177:  * @param y position y of the sprite.
rubidium@8177:  * @param z position z of the sprite.
rubidium@8177:  * @param sub Only draw a part of the sprite.
rubidium@8177:  */
rubidium@8177: static void AddCombinedSprite(SpriteID image, SpriteID pal, int x, int y, byte z, const SubSprite *sub)
truelight@0: {
truelight@0: 	Point pt = RemapCoords(x, y, z);
tron@2319: 	const Sprite* spr = GetSprite(image & SPRITE_MASK);
truelight@0: 
rubidium@10209: 	if (pt.x + spr->x_offs >= _vd.dpi.left + _vd.dpi.width ||
rubidium@10209: 			pt.x + spr->x_offs + spr->width <= _vd.dpi.left ||
rubidium@10209: 			pt.y + spr->y_offs >= _vd.dpi.top + _vd.dpi.height ||
rubidium@10209: 			pt.y + spr->y_offs + spr->height <= _vd.dpi.top)
truelight@0: 		return;
truelight@0: 
rubidium@10209: 	const ParentSpriteToDraw *pstd = _vd.parent_sprites_to_draw.End() - 1;
rubidium@10207: 	AddChildSpriteScreen(image, pal, pt.x - pstd->left, pt.y - pstd->top, false, sub);
truelight@0: }
truelight@0: 
rubidium@8076: /** Draw a (transparent) sprite at given coordinates with a given bounding box.
rubidium@8076:  * The bounding box extends from (x + bb_offset_x, y + bb_offset_y, z + bb_offset_z) to (x + w - 1, y + h - 1, z + dz - 1), both corners included.
rubidium@8113:  * Bounding boxes with bb_offset_x == w or bb_offset_y == h or bb_offset_z == dz are allowed and produce thin slices.
rubidium@8076:  *
rubidium@8076:  * @note Bounding boxes are normally specified with bb_offset_x = bb_offset_y = bb_offset_z = 0. The extent of the bounding box in negative direction is
rubidium@8076:  *       defined by the sprite offset in the grf file.
rubidium@8076:  *       However if modifying the sprite offsets is not suitable (e.g. when using existing graphics), the bounding box can be tuned by bb_offset.
rubidium@8076:  *
rubidium@8113:  * @pre w >= bb_offset_x, h >= bb_offset_y, dz >= bb_offset_z. Else w, h or dz are ignored.
rubidium@8076:  *
rubidium@7829:  * @param image the image to combine and draw,
rubidium@7829:  * @param pal the provided palette,
rubidium@8076:  * @param x position X (world) of the sprite,
rubidium@8076:  * @param y position Y (world) of the sprite,
rubidium@8076:  * @param w bounding box extent towards positive X (world),
rubidium@8076:  * @param h bounding box extent towards positive Y (world),
rubidium@8076:  * @param dz bounding box extent towards positive Z (world),
rubidium@8076:  * @param z position Z (world) of the sprite,
rubidium@8076:  * @param transparent if true, switch the palette between the provided palette and the transparent palette,
rubidium@8076:  * @param bb_offset_x bounding box extent towards negative X (world),
rubidium@8076:  * @param bb_offset_y bounding box extent towards negative Y (world),
rubidium@8076:  * @param bb_offset_z bounding box extent towards negative Z (world)
rubidium@8177:  * @param sub Only draw a part of the sprite.
rubidium@7829:  */
rubidium@8177: void AddSortableSpriteToDraw(SpriteID image, SpriteID pal, int x, int y, int w, int h, int dz, int z, bool transparent, int bb_offset_x, int bb_offset_y, int bb_offset_z, const SubSprite *sub)
truelight@0: {
rubidium@8139: 	int32 left, right, top, bottom;
truelight@0: 
celestar@2187: 	assert((image & SPRITE_MASK) < MAX_SPRITES);
truelight@0: 
rubidium@7829: 	/* make the sprites transparent with the right palette */
rubidium@7829: 	if (transparent) {
skidd13@8427: 		SetBit(image, PALETTE_MODIFIER_TRANSPARENT);
rubidium@7829: 		pal = PALETTE_TO_TRANSPARENT;
rubidium@7829: 	}
rubidium@7829: 
rubidium@10209: 	if (_vd.combine_sprites == 2) {
rubidium@8177: 		AddCombinedSprite(image, pal, x, y, z, sub);
truelight@0: 		return;
truelight@0: 	}
truelight@0: 
rubidium@10209: 	_vd.last_child = NULL;
truelight@0: 
rubidium@10207: 	Point pt = RemapCoords(x, y, z);
rubidium@10207: 	int tmp_left, tmp_top, tmp_x = pt.x, tmp_y = pt.y;
rubidium@8139: 
rubidium@8139: 	/* Compute screen extents of sprite */
rubidium@8097: 	if (image == SPR_EMPTY_BOUNDING_BOX) {
rubidium@10207: 		left = tmp_left = RemapCoords(x + w          , y + bb_offset_y, z + bb_offset_z).x;
rubidium@8139: 		right           = RemapCoords(x + bb_offset_x, y + h          , z + bb_offset_z).x + 1;
rubidium@10207: 		top  = tmp_top  = RemapCoords(x + bb_offset_x, y + bb_offset_y, z + dz         ).y;
rubidium@8139: 		bottom          = RemapCoords(x + w          , y + h          , z + bb_offset_z).y + 1;
rubidium@8097: 	} else {
rubidium@8097: 		const Sprite *spr = GetSprite(image & SPRITE_MASK);
rubidium@10207: 		left = tmp_left = (pt.x += spr->x_offs);
rubidium@8139: 		right           = (pt.x +  spr->width );
rubidium@10207: 		top  = tmp_top  = (pt.y += spr->y_offs);
rubidium@8139: 		bottom          = (pt.y +  spr->height);
rubidium@8097: 	}
belugas@9058: 
rubidium@8139: 	if (_draw_bounding_boxes && (image != SPR_EMPTY_BOUNDING_BOX)) {
rubidium@8139: 		/* Compute maximal extents of sprite and it's bounding box */
rubidium@8139: 		left   = min(left  , RemapCoords(x + w          , y + bb_offset_y, z + bb_offset_z).x);
rubidium@8139: 		right  = max(right , RemapCoords(x + bb_offset_x, y + h          , z + bb_offset_z).x + 1);
rubidium@8139: 		top    = min(top   , RemapCoords(x + bb_offset_x, y + bb_offset_y, z + dz         ).y);
rubidium@8139: 		bottom = max(bottom, RemapCoords(x + w          , y + h          , z + bb_offset_z).y + 1);
rubidium@8139: 	}
belugas@9058: 
rubidium@8139: 	/* Do not add the sprite to the viewport, if it is outside */
rubidium@10209: 	if (left   >= _vd.dpi.left + _vd.dpi.width ||
rubidium@10209: 	    right  <= _vd.dpi.left                 ||
rubidium@10209: 	    top    >= _vd.dpi.top + _vd.dpi.height ||
rubidium@10209: 	    bottom <= _vd.dpi.top) {
tron@4189: 		return;
tron@4189: 	}
tron@4189: 
rubidium@10209: 	ParentSpriteToDraw *ps = _vd.parent_sprites_to_draw.Append();
rubidium@10207: 	ps->x = tmp_x;
rubidium@10207: 	ps->y = tmp_y;
rubidium@10207: 
rubidium@10207: 	ps->left = tmp_left;
rubidium@10207: 	ps->top  = tmp_top;
truelight@0: 
truelight@0: 	ps->image = image;
peter1138@5919: 	ps->pal = pal;
rubidium@8177: 	ps->sub = sub;
rubidium@8076: 	ps->xmin = x + bb_offset_x;
rubidium@8113: 	ps->xmax = x + max(bb_offset_x, w) - 1;
rubidium@8076: 
rubidium@8076: 	ps->ymin = y + bb_offset_y;
rubidium@8113: 	ps->ymax = y + max(bb_offset_y, h) - 1;
rubidium@8076: 
rubidium@8076: 	ps->zmin = z + bb_offset_z;
rubidium@8113: 	ps->zmax = z + max(bb_offset_z, dz) - 1;
rubidium@8076: 
rubidium@8076: 	ps->comparison_done = false;
frosch@10984: 	ps->first_child = -1;
frosch@10984: 
frosch@10984: 	_vd.last_child = &ps->first_child;
rubidium@10209: 
rubidium@10209: 	if (_vd.combine_sprites == 1) _vd.combine_sprites = 2;
truelight@0: }
truelight@0: 
rubidium@6573: void StartSpriteCombine()
truelight@0: {
rubidium@10209: 	_vd.combine_sprites = 1;
truelight@0: }
truelight@0: 
rubidium@6573: void EndSpriteCombine()
truelight@0: {
rubidium@10209: 	_vd.combine_sprites = 0;
truelight@0: }
truelight@0: 
rubidium@8177: /**
rubidium@8177:  * Add a child sprite to a parent sprite.
rubidium@8177:  *
rubidium@8177:  * @param image the image to draw.
rubidium@8177:  * @param pal the provided palette.
rubidium@8177:  * @param x sprite x-offset (screen coordinates) relative to parent sprite.
rubidium@8177:  * @param y sprite y-offset (screen coordinates) relative to parent sprite.
rubidium@8177:  * @param transparent if true, switch the palette between the provided palette and the transparent palette,
rubidium@8177:  * @param sub Only draw a part of the sprite.
rubidium@8177:  */
rubidium@8177: void AddChildSpriteScreen(SpriteID image, SpriteID pal, int x, int y, bool transparent, const SubSprite *sub)
truelight@0: {
celestar@2187: 	assert((image & SPRITE_MASK) < MAX_SPRITES);
truelight@0: 
rubidium@10208: 	/* If the ParentSprite was clipped by the viewport bounds, do not draw the ChildSprites either */
rubidium@10209: 	if (_vd.last_child == NULL) return;
rubidium@10208: 
rubidium@8155: 	/* make the sprites transparent with the right palette */
rubidium@8155: 	if (transparent) {
skidd13@8427: 		SetBit(image, PALETTE_MODIFIER_TRANSPARENT);
rubidium@8155: 		pal = PALETTE_TO_TRANSPARENT;
rubidium@8155: 	}
rubidium@8155: 
skidd13@11017: 	*_vd.last_child = _vd.child_screen_sprites_to_draw.Length();
frosch@10984: 
rubidium@10209: 	ChildScreenSpriteToDraw *cs = _vd.child_screen_sprites_to_draw.Append();
truelight@0: 	cs->image = image;
peter1138@5919: 	cs->pal = pal;
rubidium@8177: 	cs->sub = sub;
truelight@0: 	cs->x = x;
truelight@0: 	cs->y = y;
frosch@10984: 	cs->next = -1;
frosch@10984: 
frosch@10984: 	/* Append the sprite to the active ChildSprite list.
frosch@10984: 	 * If the active ParentSprite is a foundation, update last_foundation_child as well.
frosch@10984: 	 * Note: ChildSprites of foundations are NOT sequential in the vector, as selection sprites are added at last. */
frosch@10984: 	if (_vd.last_foundation_child[0] == _vd.last_child) _vd.last_foundation_child[0] = &cs->next;
frosch@10984: 	if (_vd.last_foundation_child[1] == _vd.last_child) _vd.last_foundation_child[1] = &cs->next;
frosch@10984: 	_vd.last_child = &cs->next;
truelight@0: }
truelight@0: 
truelight@0: /* Returns a StringSpriteToDraw */
rubidium@10202: void AddStringToDraw(int x, int y, StringID string, uint64 params_1, uint64 params_2, uint16 color, uint16 width)
truelight@0: {
rubidium@10209: 	StringSpriteToDraw *ss = _vd.string_sprites_to_draw.Append();
peter1138@10205: 	ss->string = string;
peter1138@10205: 	ss->x = x;
peter1138@10205: 	ss->y = y;
peter1138@10205: 	ss->params[0] = params_1;
peter1138@10205: 	ss->params[1] = params_2;
peter1138@10205: 	ss->width = width;
peter1138@10205: 	ss->color = color;
truelight@0: }
truelight@0: 
tron@4000: 
rubidium@8222: /**
rubidium@8222:  * Draws sprites between ground sprite and everything above.
rubidium@8222:  *
rubidium@8222:  * The sprite is either drawn as TileSprite or as ChildSprite of the active foundation.
rubidium@8222:  *
rubidium@8222:  * @param image the image to draw.
rubidium@8222:  * @param pal the provided palette.
rubidium@8222:  * @param ti TileInfo Tile that is being drawn
rubidium@8222:  * @param z_offset Z offset relative to the groundsprite. Only used for the sprite position, not for sprite sorting.
rubidium@8265:  * @param foundation_part Foundation part the sprite belongs to.
rubidium@8222:  */
rubidium@8265: static void DrawSelectionSprite(SpriteID image, SpriteID pal, const TileInfo *ti, int z_offset, FoundationPart foundation_part)
truelight@0: {
rubidium@8222: 	/* FIXME: This is not totally valid for some autorail highlights, that extent over the edges of the tile. */
rubidium@10209: 	if (_vd.foundation[foundation_part] == -1) {
rubidium@8222: 		/* draw on real ground */
rubidium@8222: 		DrawGroundSpriteAt(image, pal, ti->x, ti->y, ti->z + z_offset);
rubidium@8222: 	} else {
rubidium@8222: 		/* draw on top of foundation */
rubidium@8265: 		AddChildSpriteToFoundation(image, pal, NULL, foundation_part, 0, -z_offset);
dominik@1083: 	}
truelight@0: }
truelight@0: 
rubidium@8175: /**
rubidium@8175:  * Draws a selection rectangle on a tile.
rubidium@8175:  *
rubidium@8175:  * @param ti TileInfo Tile that is being drawn
rubidium@8175:  * @param pal Palette to apply.
rubidium@8175:  */
rubidium@8175: static void DrawTileSelectionRect(const TileInfo *ti, SpriteID pal)
rubidium@8175: {
rubidium@8265: 	SpriteID sel;
rubidium@8265: 	if (IsHalftileSlope(ti->tileh)) {
rubidium@8265: 		Corner halftile_corner = GetHalftileSlopeCorner(ti->tileh);
rubidium@8265: 		SpriteID sel2 = SPR_HALFTILE_SELECTION_FLAT + halftile_corner;
rubidium@8265: 		DrawSelectionSprite(sel2, pal, ti, 7 + TILE_HEIGHT, FOUNDATION_PART_HALFTILE);
rubidium@8265: 
rubidium@8265: 		Corner opposite_corner = OppositeCorner(halftile_corner);
rubidium@8265: 		if (IsSteepSlope(ti->tileh)) {
rubidium@8265: 			sel = SPR_HALFTILE_SELECTION_DOWN;
rubidium@8265: 		} else {
rubidium@8265: 			sel = ((ti->tileh & SlopeWithOneCornerRaised(opposite_corner)) != 0 ? SPR_HALFTILE_SELECTION_UP : SPR_HALFTILE_SELECTION_FLAT);
rubidium@8265: 		}
rubidium@8265: 		sel += opposite_corner;
rubidium@8265: 	} else {
rubidium@8265: 		sel = SPR_SELECT_TILE + _tileh_to_sprite[ti->tileh];
rubidium@8265: 	}
rubidium@8265: 	DrawSelectionSprite(sel, pal, ti, 7, FOUNDATION_PART_NORMAL);
rubidium@8175: }
rubidium@8175: 
truelight@0: static bool IsPartOfAutoLine(int px, int py)
truelight@0: {
tron@1863: 	px -= _thd.selstart.x;
tron@1863: 	py -= _thd.selstart.y;
truelight@0: 
rubidium@8720: 	if ((_thd.drawstyle & ~HT_DIR_MASK) != HT_LINE) return false;
rubidium@8720: 
rubidium@8720: 	switch (_thd.drawstyle & HT_DIR_MASK) {
rubidium@8720: 		case HT_DIR_X:  return py == 0; // x direction
rubidium@8720: 		case HT_DIR_Y:  return px == 0; // y direction
rubidium@8720: 		case HT_DIR_HU: return px == -py || px == -py - 16; // horizontal upper
rubidium@8720: 		case HT_DIR_HL: return px == -py || px == -py + 16; // horizontal lower
rubidium@8720: 		case HT_DIR_VL: return px == py || px == py + 16; // vertival left
rubidium@8720: 		case HT_DIR_VR: return px == py || px == py - 16; // vertical right
rubidium@8720: 		default:
rubidium@8720: 			NOT_REACHED();
truelight@0: 	}
truelight@0: }
truelight@0: 
dominik@1070: // [direction][side]
rubidium@8720: static const HighLightStyle _autorail_type[6][2] = {
dominik@1070: 	{ HT_DIR_X,  HT_DIR_X },
dominik@1070: 	{ HT_DIR_Y,  HT_DIR_Y },
dominik@1070: 	{ HT_DIR_HU, HT_DIR_HL },
dominik@1070: 	{ HT_DIR_HL, HT_DIR_HU },
dominik@1070: 	{ HT_DIR_VL, HT_DIR_VR },
dominik@1070: 	{ HT_DIR_VR, HT_DIR_VL }
dominik@1070: };
dominik@1070: 
dominik@1070: #include "table/autorail.h"
dominik@1070: 
belugas@7574: /**
rubidium@8175:  * Draws autorail highlights.
rubidium@8175:  *
rubidium@8175:  * @param *ti TileInfo Tile that is being drawn
rubidium@8175:  * @param autorail_type Offset into _AutorailTilehSprite[][]
rubidium@8175:  */
rubidium@8175: static void DrawAutorailSelection(const TileInfo *ti, uint autorail_type)
rubidium@8175: {
rubidium@8175: 	SpriteID image;
rubidium@8175: 	SpriteID pal;
rubidium@8175: 	int offset;
rubidium@8175: 
rubidium@8265: 	FoundationPart foundation_part = FOUNDATION_PART_NORMAL;
frosch@8909: 	Slope autorail_tileh = RemoveHalftileSlope(ti->tileh);
rubidium@8265: 	if (IsHalftileSlope(ti->tileh)) {
rubidium@8265: 		static const uint _lower_rail[4] = { 5U, 2U, 4U, 3U };
rubidium@8265: 		Corner halftile_corner = GetHalftileSlopeCorner(ti->tileh);
rubidium@8265: 		if (autorail_type != _lower_rail[halftile_corner]) {
rubidium@8265: 			foundation_part = FOUNDATION_PART_HALFTILE;
rubidium@8265: 			/* Here we draw the highlights of the "three-corners-raised"-slope. That looks ok to me. */
rubidium@8265: 			autorail_tileh = SlopeWithThreeCornersRaised(OppositeCorner(halftile_corner));
rubidium@8265: 		}
rubidium@8265: 	}
rubidium@8265: 
rubidium@8265: 	offset = _AutorailTilehSprite[autorail_tileh][autorail_type];
rubidium@8175: 	if (offset >= 0) {
rubidium@8175: 		image = SPR_AUTORAIL_BASE + offset;
rubidium@8175: 		pal = PAL_NONE;
rubidium@8175: 	} else {
rubidium@8175: 		image = SPR_AUTORAIL_BASE - offset;
rubidium@8175: 		pal = PALETTE_SEL_TILE_RED;
rubidium@8175: 	}
rubidium@8175: 
rubidium@8265: 	DrawSelectionSprite(image, _thd.make_square_red ? PALETTE_SEL_TILE_RED : pal, ti, 7, foundation_part);
rubidium@8175: }
rubidium@8175: 
rubidium@8175: /**
belugas@7574:  * Checks if the specified tile is selected and if so draws selection using correct selectionstyle.
belugas@7574:  * @param *ti TileInfo Tile that is being drawn
belugas@7574:  */
truelight@0: static void DrawTileSelection(const TileInfo *ti)
truelight@0: {
belugas@6919: 	/* Draw a red error square? */
rubidium@9239: 	bool is_redsq = _thd.redsq != 0 && _thd.redsq == ti->tile;
rubidium@9239: 	if (is_redsq) DrawTileSelectionRect(ti, PALETTE_TILE_RED_PULSATING);
truelight@0: 
belugas@6919: 	/* no selection active? */
tron@2116: 	if (_thd.drawstyle == 0) return;
truelight@0: 
belugas@6919: 	/* Inside the inner area? */
skidd13@8450: 	if (IsInsideBS(ti->x, _thd.pos.x, _thd.size.x) &&
skidd13@8450: 			IsInsideBS(ti->y, _thd.pos.y, _thd.size.y)) {
tron@1863: 		if (_thd.drawstyle & HT_RECT) {
rubidium@9239: 			if (!is_redsq) DrawTileSelectionRect(ti, _thd.make_square_red ? PALETTE_SEL_TILE_RED : PAL_NONE);
tron@1863: 		} else if (_thd.drawstyle & HT_POINT) {
belugas@6919: 			/* Figure out the Z coordinate for the single dot. */
rubidium@8222: 			byte z = 0;
rubidium@8265: 			FoundationPart foundation_part = FOUNDATION_PART_NORMAL;
tron@3636: 			if (ti->tileh & SLOPE_N) {
tron@3645: 				z += TILE_HEIGHT;
frosch@8909: 				if (RemoveHalftileSlope(ti->tileh) == SLOPE_STEEP_N) z += TILE_HEIGHT;
truelight@0: 			}
rubidium@8265: 			if (IsHalftileSlope(ti->tileh)) {
rubidium@8265: 				Corner halftile_corner = GetHalftileSlopeCorner(ti->tileh);
rubidium@8265: 				if ((halftile_corner == CORNER_W) || (halftile_corner == CORNER_E)) z += TILE_HEIGHT;
rubidium@8265: 				if (halftile_corner != CORNER_S) {
rubidium@8265: 					foundation_part = FOUNDATION_PART_HALFTILE;
rubidium@8265: 					if (IsSteepSlope(ti->tileh)) z -= TILE_HEIGHT;
rubidium@8265: 				}
rubidium@8265: 			}
rubidium@8265: 			DrawSelectionSprite(_cur_dpi->zoom <= ZOOM_LVL_DETAIL ? SPR_DOT : SPR_DOT_SMALL, PAL_NONE, ti, z, foundation_part);
tron@2116: 		} else if (_thd.drawstyle & HT_RAIL /*&& _thd.place_mode == VHM_RAIL*/) {
belugas@6919: 			/* autorail highlight piece under cursor */
tron@2116: 			uint type = _thd.drawstyle & 0xF;
tron@2116: 			assert(type <= 5);
rubidium@8720: 			DrawAutorailSelection(ti, _autorail_type[type][0]);
tron@2116: 		} else if (IsPartOfAutoLine(ti->x, ti->y)) {
belugas@6919: 			/* autorail highlighting long line */
tron@2116: 			int dir = _thd.drawstyle & ~0xF0;
tron@2116: 			uint side;
dominik@1070: 
tron@2116: 			if (dir < 2) {
tron@2116: 				side = 0;
tron@2116: 			} else {
tron@2116: 				TileIndex start = TileVirtXY(_thd.selstart.x, _thd.selstart.y);
skidd13@8466: 				side = Delta(Delta(TileX(start), TileX(ti->tile)), Delta(TileY(start), TileY(ti->tile)));
tron@2116: 			}
tron@1109: 
rubidium@8720: 			DrawAutorailSelection(ti, _autorail_type[dir][side]);
tron@2116: 		}
truelight@0: 		return;
truelight@0: 	}
truelight@0: 
belugas@6919: 	/* Check if it's inside the outer area? */
rubidium@9239: 	if (!is_redsq && _thd.outersize.x &&
tron@1863: 			_thd.size.x < _thd.size.x + _thd.outersize.x &&
skidd13@8450: 			IsInsideBS(ti->x, _thd.pos.x + _thd.offs.x, _thd.size.x + _thd.outersize.x) &&
skidd13@8450: 			IsInsideBS(ti->y, _thd.pos.y + _thd.offs.y, _thd.size.y + _thd.outersize.y)) {
belugas@6919: 		/* Draw a blue rect. */
rubidium@8175: 		DrawTileSelectionRect(ti, PALETTE_SEL_TILE_BLUE);
truelight@0: 		return;
truelight@0: 	}
truelight@0: }
truelight@0: 
rubidium@6573: static void ViewportAddLandscape()
truelight@0: {
truelight@0: 	int x, y, width, height;
truelight@0: 	TileInfo ti;
truelight@0: 	bool direction;
truelight@0: 
truelight@0: 	_cur_ti = &ti;
truelight@0: 
belugas@6919: 	/* Transform into tile coordinates and round to closest full tile */
rubidium@10209: 	x = ((_vd.dpi.top >> 1) - (_vd.dpi.left >> 2)) & ~0xF;
rubidium@10209: 	y = ((_vd.dpi.top >> 1) + (_vd.dpi.left >> 2) - 0x10) & ~0xF;
peter1138@5752: 
belugas@6919: 	/* determine size of area */
truelight@0: 	{
truelight@0: 		Point pt = RemapCoords(x, y, 241);
rubidium@10209: 		width = (_vd.dpi.left + _vd.dpi.width - pt.x + 95) >> 6;
rubidium@10209: 		height = (_vd.dpi.top + _vd.dpi.height - pt.y) >> 5 << 1;
truelight@0: 	}
truelight@0: 
truelight@0: 	assert(width > 0);
truelight@0: 	assert(height > 0);
truelight@193: 
truelight@0: 	direction = false;
truelight@0: 
truelight@0: 	do {
truelight@0: 		int width_cur = width;
truelight@0: 		int x_cur = x;
truelight@0: 		int y_cur = y;
truelight@193: 
truelight@0: 		do {
tron@4238: 			TileType tt;
tron@4238: 
tron@4238: 			ti.x = x_cur;
tron@4238: 			ti.y = y_cur;
tron@4238: 			if (0 <= x_cur && x_cur < (int)MapMaxX() * TILE_SIZE &&
tron@4238: 					0 <= y_cur && y_cur < (int)MapMaxY() * TILE_SIZE) {
tron@4238: 				TileIndex tile = TileVirtXY(x_cur, y_cur);
tron@4238: 
tron@4238: 				ti.tile = tile;
tron@4238: 				ti.tileh = GetTileSlope(tile, &ti.z);
tron@4238: 				tt = GetTileType(tile);
tron@4238: 			} else {
tron@4238: 				ti.tileh = SLOPE_FLAT;
tron@4238: 				ti.tile = 0;
tron@4238: 				ti.z = 0;
tron@4238: 				tt = MP_VOID;
tron@4238: 			}
tron@4238: 
truelight@0: 			y_cur += 0x10;
truelight@0: 			x_cur -= 0x10;
peter1138@5752: 
rubidium@10209: 			_vd.foundation_part = FOUNDATION_PART_NONE;
rubidium@10209: 			_vd.foundation[0] = -1;
rubidium@10209: 			_vd.foundation[1] = -1;
rubidium@10209: 			_vd.last_foundation_child[0] = NULL;
rubidium@10209: 			_vd.last_foundation_child[1] = NULL;
truelight@193: 
tron@4238: 			_tile_type_procs[tt]->draw_tile_proc(&ti);
truelight@0: 			DrawTileSelection(&ti);
truelight@0: 		} while (--width_cur);
truelight@193: 
peter1138@5752: 		if ((direction ^= 1) != 0) {
truelight@0: 			y += 0x10;
peter1138@5752: 		} else {
truelight@0: 			x += 0x10;
peter1138@5752: 		}
truelight@193: 	} while (--height);
truelight@0: }
truelight@0: 
truelight@0: 
tron@410: static void ViewportAddTownNames(DrawPixelInfo *dpi)
truelight@0: {
truelight@0: 	Town *t;
truelight@0: 	int left, top, right, bottom;
truelight@0: 
skidd13@8424: 	if (!HasBit(_display_opt, DO_SHOW_TOWN_NAMES) || _game_mode == GM_MENU)
truelight@0: 		return;
truelight@0: 
truelight@0: 	left = dpi->left;
truelight@0: 	top = dpi->top;
truelight@0: 	right = left + dpi->width;
truelight@0: 	bottom = top + dpi->height;
truelight@0: 
tron@5027: 	switch (dpi->zoom) {
truelight@7120: 		case ZOOM_LVL_NORMAL:
tron@5027: 			FOR_ALL_TOWNS(t) {
tron@5027: 				if (bottom > t->sign.top &&
tron@5027: 						top    < t->sign.top + 12 &&
tron@5027: 						right  > t->sign.left &&
tron@5027: 						left   < t->sign.left + t->sign.width_1) {
tron@5027: 					AddStringToDraw(t->sign.left + 1, t->sign.top + 1,
rubidium@10775: 						_settings_client.gui.population_in_label ? STR_TOWN_LABEL_POP : STR_TOWN_LABEL,
tron@5027: 						t->index, t->population);
tron@5027: 				}
truelight@0: 			}
tron@5027: 			break;
tron@5027: 
truelight@7120: 		case ZOOM_LVL_OUT_2X:
tron@5027: 			right += 2;
tron@5027: 			bottom += 2;
tron@5027: 
tron@5027: 			FOR_ALL_TOWNS(t) {
tron@5027: 				if (bottom > t->sign.top &&
tron@5027: 						top    < t->sign.top + 24 &&
tron@5027: 						right  > t->sign.left &&
rubidium@10229: 						left   < t->sign.left + t->sign.width_1 * 2) {
tron@5027: 					AddStringToDraw(t->sign.left + 1, t->sign.top + 1,
rubidium@10775: 						_settings_client.gui.population_in_label ? STR_TOWN_LABEL_POP : STR_TOWN_LABEL,
tron@5027: 						t->index, t->population);
tron@5027: 				}
truelight@193: 			}
tron@5027: 			break;
tron@5027: 
truelight@7120: 		case ZOOM_LVL_OUT_4X:
truelight@7149: 		case ZOOM_LVL_OUT_8X:
truelight@7149: 			right += ScaleByZoom(1, dpi->zoom);
truelight@7149: 			bottom += ScaleByZoom(1, dpi->zoom) + 1;
tron@5027: 
tron@5027: 			FOR_ALL_TOWNS(t) {
tron@5027: 				if (bottom > t->sign.top &&
truelight@7149: 						top    < t->sign.top + ScaleByZoom(12, dpi->zoom) &&
tron@5027: 						right  > t->sign.left &&
truelight@7149: 						left   < t->sign.left + ScaleByZoom(t->sign.width_2, dpi->zoom)) {
tron@5027: 					AddStringToDraw(t->sign.left + 5, t->sign.top + 1, STR_TOWN_LABEL_TINY_BLACK, t->index, 0);
tron@5027: 					AddStringToDraw(t->sign.left + 1, t->sign.top - 3, STR_TOWN_LABEL_TINY_WHITE, t->index, 0);
tron@5027: 				}
truelight@193: 			}
tron@5027: 			break;
truelight@7149: 
truelight@7149: 		default: NOT_REACHED();
truelight@0: 	}
truelight@0: }
truelight@0: 
tron@5025: 
tron@5025: static void AddStation(const Station *st, StringID str, uint16 width)
tron@5025: {
rubidium@10202: 	AddStringToDraw(st->sign.left + 1, st->sign.top + 1, str, st->index, st->facilities, (st->owner == OWNER_NONE || st->facilities == 0) ? 0xE : _player_colors[st->owner], width);
tron@5025: }
tron@5025: 
tron@5025: 
tron@410: static void ViewportAddStationNames(DrawPixelInfo *dpi)
truelight@0: {
truelight@0: 	int left, top, right, bottom;
tron@5025: 	const Station *st;
truelight@0: 
skidd13@8424: 	if (!HasBit(_display_opt, DO_SHOW_STATION_NAMES) || _game_mode == GM_MENU)
truelight@0: 		return;
truelight@0: 
truelight@0: 	left = dpi->left;
truelight@0: 	top = dpi->top;
truelight@0: 	right = left + dpi->width;
truelight@0: 	bottom = top + dpi->height;
truelight@0: 
tron@5027: 	switch (dpi->zoom) {
truelight@7120: 		case ZOOM_LVL_NORMAL:
tron@5027: 			FOR_ALL_STATIONS(st) {
tron@5027: 				if (bottom > st->sign.top &&
tron@5027: 						top    < st->sign.top + 12 &&
tron@5027: 						right  > st->sign.left &&
tron@5027: 						left   < st->sign.left + st->sign.width_1) {
tron@5027: 					AddStation(st, STR_305C_0, st->sign.width_1);
tron@5027: 				}
truelight@0: 			}
tron@5027: 			break;
tron@5027: 
truelight@7120: 		case ZOOM_LVL_OUT_2X:
tron@5027: 			right += 2;
tron@5027: 			bottom += 2;
tron@5027: 			FOR_ALL_STATIONS(st) {
tron@5027: 				if (bottom > st->sign.top &&
tron@5027: 						top    < st->sign.top + 24 &&
tron@5027: 						right  > st->sign.left &&
rubidium@10229: 						left   < st->sign.left + st->sign.width_1 * 2) {
tron@5027: 					AddStation(st, STR_305C_0, st->sign.width_1);
tron@5027: 				}
truelight@0: 			}
tron@5027: 			break;
tron@5027: 
truelight@7120: 		case ZOOM_LVL_OUT_4X:
truelight@7149: 		case ZOOM_LVL_OUT_8X:
truelight@7149: 			right += ScaleByZoom(1, dpi->zoom);
truelight@7149: 			bottom += ScaleByZoom(1, dpi->zoom) + 1;
truelight@7149: 
tron@5027: 			FOR_ALL_STATIONS(st) {
tron@5027: 				if (bottom > st->sign.top &&
truelight@7149: 						top    < st->sign.top + ScaleByZoom(12, dpi->zoom) &&
tron@5027: 						right  > st->sign.left &&
truelight@7149: 						left   < st->sign.left + ScaleByZoom(st->sign.width_2, dpi->zoom)) {
tron@5027: 					AddStation(st, STR_STATION_SIGN_TINY, st->sign.width_2 | 0x8000);
tron@5027: 				}
truelight@0: 			}
tron@5027: 			break;
truelight@7149: 
truelight@7149: 		default: NOT_REACHED();
truelight@0: 	}
truelight@0: }
truelight@0: 
tron@5025: 
tron@5025: static void AddSign(const Sign *si, StringID str, uint16 width)
tron@5025: {
rubidium@10202: 	AddStringToDraw(si->sign.left + 1, si->sign.top + 1, str, si->index, 0, (si->owner == OWNER_NONE) ? 14 : _player_colors[si->owner], width);
tron@5025: }
tron@5025: 
tron@5025: 
tron@410: static void ViewportAddSigns(DrawPixelInfo *dpi)
truelight@0: {
tron@5025: 	const Sign *si;
truelight@0: 	int left, top, right, bottom;
truelight@0: 
smatz@9302: 	/* Signs are turned off or are invisible */
smatz@9302: 	if (!HasBit(_display_opt, DO_SHOW_SIGNS) || IsInvisibilitySet(TO_SIGNS)) return;
truelight@0: 
truelight@0: 	left = dpi->left;
truelight@0: 	top = dpi->top;
truelight@0: 	right = left + dpi->width;
truelight@0: 	bottom = top + dpi->height;
truelight@0: 
tron@5027: 	switch (dpi->zoom) {
truelight@7120: 		case ZOOM_LVL_NORMAL:
tron@5027: 			FOR_ALL_SIGNS(si) {
tron@5027: 				if (bottom > si->sign.top &&
tron@5027: 						top    < si->sign.top + 12 &&
tron@5027: 						right  > si->sign.left &&
tron@5027: 						left   < si->sign.left + si->sign.width_1) {
tron@5027: 					AddSign(si, STR_2806, si->sign.width_1);
tron@5027: 				}
truelight@0: 			}
tron@5027: 			break;
tron@5027: 
truelight@7120: 		case ZOOM_LVL_OUT_2X:
tron@5027: 			right += 2;
tron@5027: 			bottom += 2;
tron@5027: 			FOR_ALL_SIGNS(si) {
tron@5027: 				if (bottom > si->sign.top &&
tron@5027: 						top    < si->sign.top + 24 &&
tron@5027: 						right  > si->sign.left &&
tron@5027: 						left   < si->sign.left + si->sign.width_1 * 2) {
tron@5027: 					AddSign(si, STR_2806, si->sign.width_1);
tron@5027: 				}
truelight@0: 			}
tron@5027: 			break;
tron@5027: 
truelight@7120: 		case ZOOM_LVL_OUT_4X:
truelight@7149: 		case ZOOM_LVL_OUT_8X:
truelight@7149: 			right += ScaleByZoom(1, dpi->zoom);
truelight@7149: 			bottom += ScaleByZoom(1, dpi->zoom) + 1;
truelight@7149: 
tron@5027: 			FOR_ALL_SIGNS(si) {
tron@5027: 				if (bottom > si->sign.top &&
truelight@7149: 						top    < si->sign.top + ScaleByZoom(12, dpi->zoom) &&
tron@5027: 						right  > si->sign.left &&
truelight@7149: 						left   < si->sign.left + ScaleByZoom(si->sign.width_2, dpi->zoom)) {
rubidium@8447: 					AddSign(si, IsTransparencySet(TO_SIGNS) ? STR_2002_WHITE : STR_2002, si->sign.width_2 | 0x8000);
tron@5027: 				}
truelight@0: 			}
tron@5027: 			break;
truelight@7149: 
truelight@7149: 		default: NOT_REACHED();
truelight@0: 	}
truelight@0: }
truelight@0: 
tron@5025: 
tron@5025: static void AddWaypoint(const Waypoint *wp, StringID str, uint16 width)
tron@5025: {
rubidium@10202: 	AddStringToDraw(wp->sign.left + 1, wp->sign.top + 1, str, wp->index, 0, (wp->deleted ? 0xE : 11), width);
tron@5025: }
tron@5025: 
tron@5025: 
tron@410: static void ViewportAddWaypoints(DrawPixelInfo *dpi)
truelight@0: {
tron@5025: 	const Waypoint *wp;
truelight@0: 	int left, top, right, bottom;
truelight@0: 
skidd13@8424: 	if (!HasBit(_display_opt, DO_WAYPOINTS))
truelight@0: 		return;
truelight@0: 
truelight@0: 	left = dpi->left;
truelight@0: 	top = dpi->top;
truelight@0: 	right = left + dpi->width;
truelight@0: 	bottom = top + dpi->height;
truelight@0: 
tron@5027: 	switch (dpi->zoom) {
truelight@7120: 		case ZOOM_LVL_NORMAL:
tron@5027: 			FOR_ALL_WAYPOINTS(wp) {
tron@5027: 				if (bottom > wp->sign.top &&
tron@5027: 						top    < wp->sign.top + 12 &&
tron@5027: 						right  > wp->sign.left &&
tron@5027: 						left   < wp->sign.left + wp->sign.width_1) {
tron@5027: 					AddWaypoint(wp, STR_WAYPOINT_VIEWPORT, wp->sign.width_1);
tron@5027: 				}
truelight@0: 			}
tron@5027: 			break;
tron@5027: 
truelight@7120: 		case ZOOM_LVL_OUT_2X:
tron@5027: 			right += 2;
tron@5027: 			bottom += 2;
tron@5027: 			FOR_ALL_WAYPOINTS(wp) {
tron@5027: 				if (bottom > wp->sign.top &&
tron@5027: 						top    < wp->sign.top + 24 &&
tron@5027: 						right  > wp->sign.left &&
rubidium@10229: 						left   < wp->sign.left + wp->sign.width_1 * 2) {
tron@5027: 					AddWaypoint(wp, STR_WAYPOINT_VIEWPORT, wp->sign.width_1);
tron@5027: 				}
truelight@0: 			}
tron@5027: 			break;
tron@5027: 
truelight@7120: 		case ZOOM_LVL_OUT_4X:
truelight@7149: 		case ZOOM_LVL_OUT_8X:
truelight@7149: 			right += ScaleByZoom(1, dpi->zoom);
truelight@7149: 			bottom += ScaleByZoom(1, dpi->zoom) + 1;
truelight@7149: 
tron@5027: 			FOR_ALL_WAYPOINTS(wp) {
tron@5027: 				if (bottom > wp->sign.top &&
truelight@7149: 						top    < wp->sign.top + ScaleByZoom(12, dpi->zoom) &&
tron@5027: 						right  > wp->sign.left &&
truelight@7149: 						left   < wp->sign.left + ScaleByZoom(wp->sign.width_2, dpi->zoom)) {
tron@5027: 					AddWaypoint(wp, STR_WAYPOINT_VIEWPORT_TINY, wp->sign.width_2 | 0x8000);
tron@5027: 				}
truelight@0: 			}
tron@5027: 			break;
truelight@7149: 
truelight@7149: 		default: NOT_REACHED();
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: void UpdateViewportSignPos(ViewportSign *sign, int left, int top, StringID str)
truelight@0: {
truelight@0: 	char buffer[128];
tron@2116: 	uint w;
truelight@0: 
truelight@0: 	sign->top = top;
truelight@0: 
Darkvater@4912: 	GetString(buffer, str, lastof(buffer));
Darkvater@4609: 	w = GetStringBoundingBox(buffer).width + 3;
truelight@0: 	sign->width_1 = w;
tron@2116: 	sign->left = left - w / 2;
truelight@0: 
Darkvater@4609: 	/* zoomed out version */
peter1138@3798: 	_cur_fontsize = FS_SMALL;
Darkvater@4609: 	w = GetStringBoundingBox(buffer).width + 3;
peter1138@3798: 	_cur_fontsize = FS_NORMAL;
Darkvater@1390: 	sign->width_2 = w;
truelight@0: }
truelight@0: 
truelight@0: 
rubidium@10203: static void ViewportDrawTileSprites(const TileSpriteToDrawVector *tstdv)
truelight@193: {
peter1138@10205: 	const TileSpriteToDraw *tsend = tstdv->End();
peter1138@10205: 	for (const TileSpriteToDraw *ts = tstdv->Begin(); ts != tsend; ++ts) {
truelight@0: 		Point pt = RemapCoords(ts->x, ts->y, ts->z);
rubidium@8177: 		DrawSprite(ts->image, ts->pal, pt.x, pt.y, ts->sub);
rubidium@10203: 	}
truelight@0: }
truelight@0: 
rubidium@10207: static void ViewportSortParentSprites(ParentSpriteToSortVector *psdv)
truelight@0: {
rubidium@10207: 	ParentSpriteToDraw **psdvend = psdv->End();
rubidium@10207: 	ParentSpriteToDraw **psd = psdv->Begin();
rubidium@10207: 	while (psd != psdvend) {
rubidium@10204: 		ParentSpriteToDraw *ps = *psd;
rubidium@10204: 
smatz@10206: 		if (ps->comparison_done) {
smatz@10206: 			psd++;
smatz@10206: 			continue;
smatz@10206: 		}
rubidium@10204: 
rubidium@10204: 		ps->comparison_done = true;
rubidium@10204: 
rubidium@10207: 		for (ParentSpriteToDraw **psd2 = psd + 1; psd2 != psdvend; psd2++) {
rubidium@10204: 			ParentSpriteToDraw *ps2 = *psd2;
rubidium@10204: 
rubidium@10204: 			if (ps2->comparison_done) continue;
rubidium@10204: 
rubidium@10204: 			/* Decide which comparator to use, based on whether the bounding
rubidium@10204: 			 * boxes overlap
rubidium@10204: 			 */
rubidium@10204: 			if (ps->xmax >= ps2->xmin && ps->xmin <= ps2->xmax && // overlap in X?
rubidium@10204: 					ps->ymax >= ps2->ymin && ps->ymin <= ps2->ymax && // overlap in Y?
rubidium@10204: 					ps->zmax >= ps2->zmin && ps->zmin <= ps2->zmax) { // overlap in Z?
rubidium@10204: 				/* Use X+Y+Z as the sorting order, so sprites closer to the bottom of
rubidium@10204: 				 * the screen and with higher Z elevation, are drawn in front.
rubidium@10204: 				 * Here X,Y,Z are the coordinates of the "center of mass" of the sprite,
rubidium@10204: 				 * i.e. X=(left+right)/2, etc.
rubidium@10204: 				 * However, since we only care about order, don't actually divide / 2
tron@4187: 				 */
rubidium@10204: 				if (ps->xmin + ps->xmax + ps->ymin + ps->ymax + ps->zmin + ps->zmax <=
rubidium@10204: 						ps2->xmin + ps2->xmax + ps2->ymin + ps2->ymax + ps2->zmin + ps2->zmax) {
rubidium@10204: 					continue;
hackykid@1934: 				}
rubidium@10204: 			} else {
rubidium@10204: 				/* We only change the order, if it is definite.
rubidium@10204: 				 * I.e. every single order of X, Y, Z says ps2 is behind ps or they overlap.
rubidium@10204: 				 * That is: If one partial order says ps behind ps2, do not change the order.
rubidium@10204: 				 */
rubidium@10204: 				if (ps->xmax < ps2->xmin ||
rubidium@10204: 						ps->ymax < ps2->ymin ||
rubidium@10204: 						ps->zmax < ps2->zmin) {
rubidium@10204: 					continue;
rubidium@10204: 				}
truelight@0: 			}
rubidium@10204: 
rubidium@10204: 			/* Swap the two sprites ps and ps2 using bubble-sort algorithm. */
rubidium@10204: 			ParentSpriteToDraw **psd3 = psd;
rubidium@10204: 			do {
rubidium@10207: 				ParentSpriteToDraw *temp = *psd3;
rubidium@10204: 				*psd3 = ps2;
rubidium@10204: 				ps2 = temp;
rubidium@10204: 
rubidium@10204: 				psd3++;
rubidium@10204: 			} while (psd3 <= psd2);
truelight@0: 		}
truelight@0: 	}
truelight@0: }
truelight@0: 
rubidium@10208: static void ViewportDrawParentSprites(const ParentSpriteToSortVector *psd, const ChildScreenSpriteToDrawVector *csstdv)
truelight@0: {
rubidium@10207: 	const ParentSpriteToDraw * const *psd_end = psd->End();
rubidium@10207: 	for (const ParentSpriteToDraw * const *it = psd->Begin(); it != psd_end; it++) {
rubidium@10207: 		const ParentSpriteToDraw *ps = *it;
rubidium@8177: 		if (ps->image != SPR_EMPTY_BOUNDING_BOX) DrawSprite(ps->image, ps->pal, ps->x, ps->y, ps->sub);
truelight@0: 
frosch@10984: 		int child_idx = ps->first_child;
frosch@10984: 		while (child_idx >= 0) {
frosch@10984: 			const ChildScreenSpriteToDraw *cs = csstdv->Get(child_idx);
frosch@10984: 			child_idx = cs->next;
rubidium@8177: 			DrawSprite(cs->image, cs->pal, ps->left + cs->x, ps->top + cs->y, cs->sub);
truelight@0: 		}
truelight@0: 	}
truelight@0: }
truelight@0: 
rubidium@8139: /**
rubidium@8139:  * Draws the bounding boxes of all ParentSprites
rubidium@8139:  * @param psd Array of ParentSprites
rubidium@8139:  */
rubidium@10207: static void ViewportDrawBoundingBoxes(const ParentSpriteToSortVector *psd)
rubidium@8139: {
rubidium@10207: 	const ParentSpriteToDraw * const *psd_end = psd->End();
rubidium@10207: 	for (const ParentSpriteToDraw * const *it = psd->Begin(); it != psd_end; it++) {
rubidium@10207: 		const ParentSpriteToDraw *ps = *it;
rubidium@8139: 		Point pt1 = RemapCoords(ps->xmax + 1, ps->ymax + 1, ps->zmax + 1); // top front corner
rubidium@8139: 		Point pt2 = RemapCoords(ps->xmin    , ps->ymax + 1, ps->zmax + 1); // top left corner
rubidium@8139: 		Point pt3 = RemapCoords(ps->xmax + 1, ps->ymin    , ps->zmax + 1); // top right corner
rubidium@8139: 		Point pt4 = RemapCoords(ps->xmax + 1, ps->ymax + 1, ps->zmin    ); // bottom front corner
rubidium@8139: 
rubidium@8139: 		DrawBox(        pt1.x,         pt1.y,
rubidium@8139: 		        pt2.x - pt1.x, pt2.y - pt1.y,
rubidium@8139: 		        pt3.x - pt1.x, pt3.y - pt1.y,
rubidium@8139: 		        pt4.x - pt1.x, pt4.y - pt1.y);
rubidium@8139: 	}
rubidium@8139: }
rubidium@8139: 
rubidium@10202: static void ViewportDrawStrings(DrawPixelInfo *dpi, const StringSpriteToDrawVector *sstdv)
truelight@0: {
truelight@0: 	DrawPixelInfo dp;
truelight@7120: 	ZoomLevel zoom;
truelight@193: 
truelight@0: 	_cur_dpi = &dp;
truelight@0: 	dp = *dpi;
truelight@0: 
tron@2116: 	zoom = dp.zoom;
truelight@7120: 	dp.zoom = ZOOM_LVL_NORMAL;
truelight@0: 
truelight@7150: 	dp.left   = UnScaleByZoom(dp.left,   zoom);
truelight@7150: 	dp.top    = UnScaleByZoom(dp.top,    zoom);
truelight@7150: 	dp.width  = UnScaleByZoom(dp.width,  zoom);
truelight@7150: 	dp.height = UnScaleByZoom(dp.height, zoom);
truelight@0: 
peter1138@10205: 	const StringSpriteToDraw *ssend = sstdv->End();
peter1138@10205: 	for (const StringSpriteToDraw *ss = sstdv->Begin(); ss != ssend; ++ss) {
tron@5025: 		uint16 colour;
tron@5025: 
truelight@0: 		if (ss->width != 0) {
smatz@9302: 			/* Do not draw signs nor station names if they are set invisible */
rubidium@10202: 			if (IsInvisibilitySet(TO_SIGNS) && ss->string != STR_2806) continue;
smatz@9302: 
truelight@7150: 			int x = UnScaleByZoom(ss->x, zoom) - 1;
truelight@7150: 			int y = UnScaleByZoom(ss->y, zoom) - 1;
tron@2116: 			int bottom = y + 11;
tron@2116: 			int w = ss->width;
truelight@193: 
truelight@0: 			if (w & 0x8000) {
truelight@0: 				w &= ~0x8000;
truelight@0: 				y--;
truelight@0: 				bottom -= 6;
truelight@0: 				w -= 3;
truelight@0: 			}
truelight@0: 
tron@2116: 		/* Draw the rectangle if 'tranparent station signs' is off,
tron@2116: 		 * or if we are drawing a general text sign (STR_2806) */
belugas@8345: 			if (!IsTransparencySet(TO_SIGNS) || ss->string == STR_2806) {
tron@2116: 				DrawFrameRect(
tron@2116: 					x, y, x + w, bottom, ss->color,
belugas@8345: 					IsTransparencySet(TO_SIGNS) ? FR_TRANSPARENT : FR_NONE
tron@2116: 				);
peter1138@6923: 			}
truelight@0: 		}
truelight@0: 
tron@534: 		SetDParam(0, ss->params[0]);
tron@534: 		SetDParam(1, ss->params[1]);
tron@2116: 		/* if we didn't draw a rectangle, or if transparant building is on,
tron@2116: 		 * draw the text in the color the rectangle would have */
belugas@8345: 		if (IsTransparencySet(TO_SIGNS) && ss->string != STR_2806 && ss->width != 0) {
tron@2116: 			/* Real colors need the IS_PALETTE_COLOR flag
tron@2116: 			 * otherwise colors from _string_colormap are assumed. */
tron@5025: 			colour = _colour_gradient[ss->color][6] | IS_PALETTE_COLOR;
truelight@0: 		} else {
belugas@8320: 			colour = TC_BLACK;
truelight@0: 		}
tron@5025: 		DrawString(
truelight@7150: 			UnScaleByZoom(ss->x, zoom), UnScaleByZoom(ss->y, zoom) - (ss->width & 0x8000 ? 2 : 0),
tron@5025: 			ss->string, colour
tron@5025: 		);
rubidium@10203: 	}
truelight@0: }
truelight@0: 
tron@430: void ViewportDoDraw(const ViewPort *vp, int left, int top, int right, int bottom)
truelight@0: {
rubidium@10209: 	DrawPixelInfo *old_dpi = _cur_dpi;
rubidium@10209: 	_cur_dpi = &_vd.dpi;
rubidium@10209: 
rubidium@10209: 	_vd.dpi.zoom = vp->zoom;
rubidium@10209: 	int mask = ScaleByZoom(-1, vp->zoom);
rubidium@10209: 
rubidium@10209: 	_vd.combine_sprites = 0;
rubidium@10209: 
rubidium@10209: 	_vd.dpi.width = (right - left) & mask;
rubidium@10209: 	_vd.dpi.height = (bottom - top) & mask;
rubidium@10209: 	_vd.dpi.left = left & mask;
rubidium@10209: 	_vd.dpi.top = top & mask;
rubidium@10209: 	_vd.dpi.pitch = old_dpi->pitch;
rubidium@10209: 	_vd.last_child = NULL;
rubidium@10209: 
rubidium@10209: 	int x = UnScaleByZoom(_vd.dpi.left - (vp->virtual_left & mask), vp->zoom) + vp->left;
rubidium@10209: 	int y = UnScaleByZoom(_vd.dpi.top - (vp->virtual_top & mask), vp->zoom) + vp->top;
rubidium@10209: 
rubidium@10209: 	_vd.dpi.dst_ptr = BlitterFactoryBase::GetCurrentBlitter()->MoveTo(old_dpi->dst_ptr, x - old_dpi->left, y - old_dpi->top);
truelight@0: 
truelight@0: 	ViewportAddLandscape();
rubidium@10209: 	ViewportAddVehicles(&_vd.dpi);
rubidium@10209: 	DrawTextEffects(&_vd.dpi);
rubidium@10209: 
rubidium@10209: 	ViewportAddTownNames(&_vd.dpi);
rubidium@10209: 	ViewportAddStationNames(&_vd.dpi);
rubidium@10209: 	ViewportAddSigns(&_vd.dpi);
rubidium@10209: 	ViewportAddWaypoints(&_vd.dpi);
rubidium@10209: 
skidd13@11017: 	if (_vd.tile_sprites_to_draw.Length() != 0) ViewportDrawTileSprites(&_vd.tile_sprites_to_draw);
rubidium@10209: 
rubidium@10209: 	ParentSpriteToDraw *psd_end = _vd.parent_sprites_to_draw.End();
rubidium@10209: 	for (ParentSpriteToDraw *it = _vd.parent_sprites_to_draw.Begin(); it != psd_end; it++) {
rubidium@10209: 		*_vd.parent_sprites_to_sort.Append() = it;
rubidium@10207: 	}
rubidium@10207: 
rubidium@10209: 	ViewportSortParentSprites(&_vd.parent_sprites_to_sort);
rubidium@10209: 	ViewportDrawParentSprites(&_vd.parent_sprites_to_sort, &_vd.child_screen_sprites_to_draw);
rubidium@10209: 
rubidium@10209: 	if (_draw_bounding_boxes) ViewportDrawBoundingBoxes(&_vd.parent_sprites_to_sort);
rubidium@10209: 
skidd13@11017: 	if (_vd.string_sprites_to_draw.Length() != 0) ViewportDrawStrings(&_vd.dpi, &_vd.string_sprites_to_draw);
truelight@193: 
truelight@0: 	_cur_dpi = old_dpi;
rubidium@10209: 
skidd13@11017: 	_vd.string_sprites_to_draw.Clear();
skidd13@11017: 	_vd.tile_sprites_to_draw.Clear();
skidd13@11017: 	_vd.parent_sprites_to_draw.Clear();
skidd13@11017: 	_vd.parent_sprites_to_sort.Clear();
skidd13@11017: 	_vd.child_screen_sprites_to_draw.Clear();
truelight@0: }
truelight@0: 
belugas@6919: /** Make sure we don't draw a too big area at a time.
belugas@6919:  * If we do, the sprite memory will overflow. */
Darkvater@5120: static void ViewportDrawChk(const ViewPort *vp, int left, int top, int right, int bottom)
truelight@0: {
truelight@7122: 	if (ScaleByZoom(bottom - top, vp->zoom) * ScaleByZoom(right - left, vp->zoom) > 180000) {
truelight@0: 		if ((bottom - top) > (right - left)) {
truelight@0: 			int t = (top + bottom) >> 1;
truelight@0: 			ViewportDrawChk(vp, left, top, right, t);
truelight@0: 			ViewportDrawChk(vp, left, t, right, bottom);
truelight@0: 		} else {
truelight@0: 			int t = (left + right) >> 1;
truelight@0: 			ViewportDrawChk(vp, left, top, t, bottom);
truelight@0: 			ViewportDrawChk(vp, t, top, right, bottom);
truelight@0: 		}
truelight@0: 	} else {
truelight@193: 		ViewportDoDraw(vp,
truelight@7122: 			ScaleByZoom(left - vp->left, vp->zoom) + vp->virtual_left,
truelight@7122: 			ScaleByZoom(top - vp->top, vp->zoom) + vp->virtual_top,
truelight@7122: 			ScaleByZoom(right - vp->left, vp->zoom) + vp->virtual_left,
truelight@7122: 			ScaleByZoom(bottom - vp->top, vp->zoom) + vp->virtual_top
truelight@0: 		);
truelight@0: 	}
truelight@0: }
truelight@0: 
Darkvater@5120: static inline void ViewportDraw(const ViewPort *vp, int left, int top, int right, int bottom)
truelight@0: {
tron@2116: 	if (right <= vp->left || bottom <= vp->top) return;
truelight@0: 
tron@2116: 	if (left >= vp->left + vp->width) return;
truelight@0: 
truelight@0: 	if (left < vp->left) left = vp->left;
tron@2116: 	if (right > vp->left + vp->width) right = vp->left + vp->width;
truelight@0: 
tron@2116: 	if (top >= vp->top + vp->height) return;
truelight@0: 
truelight@0: 	if (top < vp->top) top = vp->top;
tron@2116: 	if (bottom > vp->top + vp->height) bottom = vp->top + vp->height;
truelight@0: 
truelight@0: 	ViewportDrawChk(vp, left, top, right, bottom);
truelight@0: }
truelight@0: 
rubidium@10595: void Window::DrawViewport() const
tron@2116: {
truelight@0: 	DrawPixelInfo *dpi = _cur_dpi;
truelight@0: 
rubidium@10595: 	dpi->left += this->left;
rubidium@10595: 	dpi->top += this->top;
rubidium@10595: 
rubidium@10595: 	ViewportDraw(this->viewport, dpi->left, dpi->top, dpi->left + dpi->width, dpi->top + dpi->height);
rubidium@10595: 
rubidium@10595: 	dpi->left -= this->left;
rubidium@10595: 	dpi->top -= this->top;
truelight@0: }
truelight@0: 
peter1138@7565: static inline void ClampViewportToMap(const ViewPort *vp, int &x, int &y)
peter1138@7565: {
peter1138@7565: 	/* Centre of the viewport is hot spot */
peter1138@7565: 	x += vp->virtual_width / 2;
peter1138@7565: 	y += vp->virtual_height / 2;
peter1138@7565: 
peter1138@7565: 	/* Convert viewport coordinates to map coordinates
peter1138@7565: 	 * Calculation is scaled by 4 to avoid rounding errors */
peter1138@7565: 	int vx = -x + y * 2;
peter1138@7565: 	int vy =  x + y * 2;
peter1138@7565: 
peter1138@7565: 	/* clamp to size of map */
skidd13@8418: 	vx = Clamp(vx, 0, MapMaxX() * TILE_SIZE * 4);
skidd13@8418: 	vy = Clamp(vy, 0, MapMaxY() * TILE_SIZE * 4);
peter1138@7565: 
peter1138@7565: 	/* Convert map coordinates to viewport coordinates */
peter1138@7565: 	x = (-vx + vy) / 2;
peter1138@7565: 	y = ( vx + vy) / 4;
peter1138@7565: 
peter1138@7565: 	/* Remove centreing */
peter1138@7565: 	x -= vp->virtual_width / 2;
peter1138@7565: 	y -= vp->virtual_height / 2;
peter1138@7565: }
peter1138@7565: 
truelight@0: void UpdateViewportPosition(Window *w)
truelight@0: {
tron@2116: 	const ViewPort *vp = w->viewport;
truelight@0: 
glx@10504: 	if (w->viewport->follow_vehicle != INVALID_VEHICLE) {
glx@10504: 		const Vehicle* veh = GetVehicle(w->viewport->follow_vehicle);
tron@2116: 		Point pt = MapXYZToViewport(vp, veh->x_pos, veh->y_pos, veh->z_pos);
truelight@0: 
truelight@0: 		SetViewportPosition(w, pt.x, pt.y);
truelight@0: 	} else {
peter1138@7565: 		/* Ensure the destination location is within the map */
glx@10504: 		ClampViewportToMap(vp, w->viewport->dest_scrollpos_x, w->viewport->dest_scrollpos_y);
glx@10504: 
glx@10504: 		int delta_x = w->viewport->dest_scrollpos_x - w->viewport->scrollpos_x;
glx@10504: 		int delta_y = w->viewport->dest_scrollpos_y - w->viewport->scrollpos_y;
peter1138@7226: 
peter1138@7226: 		if (delta_x != 0 || delta_y != 0) {
rubidium@10775: 			if (_settings_client.gui.smooth_scroll) {
peter1138@7227: 				int max_scroll = ScaleByMapSize1D(512);
peter1138@7227: 				/* Not at our desired positon yet... */
glx@10504: 				w->viewport->scrollpos_x += Clamp(delta_x / 4, -max_scroll, max_scroll);
glx@10504: 				w->viewport->scrollpos_y += Clamp(delta_y / 4, -max_scroll, max_scroll);
peter1138@7227: 			} else {
glx@10504: 				w->viewport->scrollpos_x = w->viewport->dest_scrollpos_x;
glx@10504: 				w->viewport->scrollpos_y = w->viewport->dest_scrollpos_y;
peter1138@7227: 			}
peter1138@7226: 		}
peter1138@7226: 
glx@10504: 		ClampViewportToMap(vp, w->viewport->scrollpos_x, w->viewport->scrollpos_y);
glx@10504: 
glx@10504: 		SetViewportPosition(w, w->viewport->scrollpos_x, w->viewport->scrollpos_y);
truelight@0: 	}
truelight@0: }
truelight@0: 
rubidium@8041: /**
rubidium@10255:  * Marks a viewport as dirty for repaint if it displays (a part of) the area the needs to be repainted.
rubidium@10255:  * @param vp     The viewport to mark as dirty
rubidium@10255:  * @param left   Left edge of area to repaint
rubidium@10255:  * @param top    Top edge of area to repaint
rubidium@10255:  * @param right  Right edge of area to repaint
rubidium@10255:  * @param bottom Bottom edge of area to repaint
rubidium@8041:  * @ingroup dirty
rubidium@8041:  */
tron@2116: static void MarkViewportDirty(const ViewPort *vp, int left, int top, int right, int bottom)
truelight@0: {
tron@2116: 	right -= vp->virtual_left;
tron@2116: 	if (right <= 0) return;
truelight@0: 
tron@2116: 	bottom -= vp->virtual_top;
tron@2116: 	if (bottom <= 0) return;
truelight@0: 
tron@2116: 	left = max(0, left - vp->virtual_left);
truelight@0: 
tron@2116: 	if (left >= vp->virtual_width) return;
truelight@0: 
tron@2116: 	top = max(0, top - vp->virtual_top);
tron@2116: 
tron@2116: 	if (top >= vp->virtual_height) return;
truelight@0: 
truelight@0: 	SetDirtyBlocks(
truelight@7122: 		UnScaleByZoom(left, vp->zoom) + vp->left,
truelight@7122: 		UnScaleByZoom(top, vp->zoom) + vp->top,
truelight@7122: 		UnScaleByZoom(right, vp->zoom) + vp->left,
truelight@7122: 		UnScaleByZoom(bottom, vp->zoom) + vp->top
truelight@0: 	);
truelight@0: }
truelight@0: 
rubidium@10255: /**
rubidium@10255:  * Mark all viewports that display an area as dirty (in need of repaint).
rubidium@10255:  * @param left   Left edge of area to repaint
rubidium@10255:  * @param top    Top edge of area to repaint
rubidium@10255:  * @param right  Right edge of area to repaint
rubidium@10255:  * @param bottom Bottom edge of area to repaint
rubidium@10255:  * @ingroup dirty
rubidium@10255:  */
truelight@0: void MarkAllViewportsDirty(int left, int top, int right, int bottom)
truelight@0: {
rubidium@10217: 	Window **wz;
rubidium@10217: 
rubidium@10217: 	FOR_ALL_WINDOWS(wz) {
rubidium@10217: 		ViewPort *vp = (*wz)->viewport;
rubidium@10217: 		if (vp != NULL) {
truelight@0: 			assert(vp->width != 0);
truelight@0: 			MarkViewportDirty(vp, left, top, right, bottom);
truelight@0: 		}
rubidium@10217: 	}
truelight@0: }
truelight@0: 
tron@2116: void MarkTileDirtyByTile(TileIndex tile)
tron@2116: {
celestar@3421: 	Point pt = RemapCoords(TileX(tile) * TILE_SIZE, TileY(tile) * TILE_SIZE, GetTileZ(tile));
truelight@0: 	MarkAllViewportsDirty(
truelight@0: 		pt.x - 31,
truelight@0: 		pt.y - 122,
truelight@0: 		pt.x - 31 + 67,
truelight@0: 		pt.y - 122 + 154
truelight@0: 	);
truelight@0: }
truelight@0: 
truelight@0: void MarkTileDirty(int x, int y)
truelight@0: {
tron@2116: 	uint z = 0;
truelight@0: 	Point pt;
tron@2116: 
skidd13@8450: 	if (IsInsideMM(x, 0, MapSizeX() * TILE_SIZE) &&
skidd13@8450: 			IsInsideMM(y, 0, MapSizeY() * TILE_SIZE))
tron@1980: 		z = GetTileZ(TileVirtXY(x, y));
truelight@0: 	pt = RemapCoords(x, y, z);
truelight@0: 
truelight@0: 	MarkAllViewportsDirty(
truelight@0: 		pt.x - 31,
truelight@0: 		pt.y - 122,
truelight@0: 		pt.x - 31 + 67,
truelight@0: 		pt.y - 122 + 154
truelight@0: 	);
truelight@193: }
truelight@0: 
rubidium@8041: /**
rubidium@8041:  * Marks the selected tiles as dirty.
rubidium@8041:  *
rubidium@8041:  * This function marks the selected tiles as dirty for repaint
rubidium@8041:  *
rubidium@8041:  * @note Documentation may be wrong (Progman)
rubidium@8041:  * @ingroup dirty
rubidium@8041:  */
rubidium@6573: static void SetSelectionTilesDirty()
truelight@0: {
truelight@0: 	int y_size, x_size;
tron@1863: 	int x = _thd.pos.x;
tron@1863: 	int y = _thd.pos.y;
truelight@0: 
tron@1863: 	x_size = _thd.size.x;
tron@1863: 	y_size = _thd.size.y;
truelight@0: 
tron@1863: 	if (_thd.outersize.x) {
tron@1863: 		x_size += _thd.outersize.x;
tron@1863: 		x += _thd.offs.x;
tron@1863: 		y_size += _thd.outersize.y;
tron@1863: 		y += _thd.offs.y;
truelight@0: 	}
truelight@0: 
truelight@0: 	assert(x_size > 0);
truelight@0: 	assert(y_size > 0);
truelight@0: 
truelight@0: 	x_size += x;
truelight@0: 	y_size += y;
truelight@0: 
truelight@0: 	do {
truelight@0: 		int y_bk = y;
truelight@0: 		do {
truelight@0: 			MarkTileDirty(x, y);
celestar@3421: 		} while ( (y += TILE_SIZE) != y_size);
truelight@0: 		y = y_bk;
celestar@3421: 	} while ( (x += TILE_SIZE) != x_size);
truelight@0: }
truelight@0: 
truelight@0: 
tron@1990: void SetSelectionRed(bool b)
tron@1990: {
tron@1990: 	_thd.make_square_red = b;
tron@1990: 	SetSelectionTilesDirty();
tron@1990: }
tron@1990: 
tron@1990: 
tron@2116: static bool CheckClickOnTown(const ViewPort *vp, int x, int y)
truelight@0: {
tron@2116: 	const Town *t;
truelight@0: 
skidd13@8424: 	if (!HasBit(_display_opt, DO_SHOW_TOWN_NAMES)) return false;
truelight@0: 
tron@4471: 	switch (vp->zoom) {
truelight@7120: 		case ZOOM_LVL_NORMAL:
tron@4471: 			x = x - vp->left + vp->virtual_left;
tron@4471: 			y = y - vp->top  + vp->virtual_top;
tron@4471: 			FOR_ALL_TOWNS(t) {
tron@4471: 				if (y >= t->sign.top &&
tron@4471: 						y < t->sign.top + 12 &&
tron@4471: 						x >= t->sign.left &&
tron@4471: 						x < t->sign.left + t->sign.width_1) {
tron@4471: 					ShowTownViewWindow(t->index);
tron@4471: 					return true;
tron@4471: 				}
truelight@0: 			}
tron@4471: 			break;
tron@4471: 
truelight@7120: 		case ZOOM_LVL_OUT_2X:
tron@4471: 			x = (x - vp->left + 1) * 2 + vp->virtual_left;
tron@4471: 			y = (y - vp->top  + 1) * 2 + vp->virtual_top;
tron@4471: 			FOR_ALL_TOWNS(t) {
tron@4471: 				if (y >= t->sign.top &&
tron@4471: 						y < t->sign.top + 24 &&
tron@4471: 						x >= t->sign.left &&
tron@4471: 						x < t->sign.left + t->sign.width_1 * 2) {
tron@4471: 					ShowTownViewWindow(t->index);
tron@4471: 					return true;
tron@4471: 				}
truelight@0: 			}
tron@4471: 			break;
tron@4471: 
truelight@7120: 		case ZOOM_LVL_OUT_4X:
truelight@7149: 		case ZOOM_LVL_OUT_8X:
truelight@7149: 			x = ScaleByZoom(x - vp->left + ScaleByZoom(1, vp->zoom) - 1, vp->zoom) + vp->virtual_left;
truelight@7149: 			y = ScaleByZoom(y - vp->top  + ScaleByZoom(1, vp->zoom) - 1, vp->zoom) + vp->virtual_top;
truelight@7149: 
tron@4471: 			FOR_ALL_TOWNS(t) {
tron@4471: 				if (y >= t->sign.top &&
truelight@7149: 						y < t->sign.top + ScaleByZoom(12, vp->zoom) &&
tron@4471: 						x >= t->sign.left &&
truelight@7149: 						x < t->sign.left + ScaleByZoom(t->sign.width_2, vp->zoom)) {
tron@4471: 					ShowTownViewWindow(t->index);
tron@4471: 					return true;
tron@4471: 				}
truelight@0: 			}
tron@4471: 			break;
truelight@7149: 
truelight@7149: 		default: NOT_REACHED();
truelight@0: 	}
truelight@0: 
truelight@0: 	return false;
truelight@0: }
truelight@0: 
tron@4471: 
tron@2116: static bool CheckClickOnStation(const ViewPort *vp, int x, int y)
truelight@0: {
tron@2116: 	const Station *st;
truelight@0: 
skidd13@8424: 	if (!HasBit(_display_opt, DO_SHOW_STATION_NAMES)) return false;
truelight@0: 
tron@4471: 	switch (vp->zoom) {
truelight@7120: 		case ZOOM_LVL_NORMAL:
tron@4471: 			x = x - vp->left + vp->virtual_left;
tron@4471: 			y = y - vp->top  + vp->virtual_top;
tron@4471: 			FOR_ALL_STATIONS(st) {
tron@4471: 				if (y >= st->sign.top &&
tron@4471: 						y < st->sign.top + 12 &&
tron@4471: 						x >= st->sign.left &&
tron@4471: 						x < st->sign.left + st->sign.width_1) {
tron@4471: 					ShowStationViewWindow(st->index);
tron@4471: 					return true;
tron@4471: 				}
truelight@0: 			}
tron@4471: 			break;
tron@4471: 
truelight@7120: 		case ZOOM_LVL_OUT_2X:
tron@4471: 			x = (x - vp->left + 1) * 2 + vp->virtual_left;
tron@4471: 			y = (y - vp->top  + 1) * 2 + vp->virtual_top;
tron@4471: 			FOR_ALL_STATIONS(st) {
tron@4471: 				if (y >= st->sign.top &&
tron@4471: 						y < st->sign.top + 24 &&
tron@4471: 						x >= st->sign.left &&
tron@4471: 						x < st->sign.left + st->sign.width_1 * 2) {
tron@4471: 					ShowStationViewWindow(st->index);
tron@4471: 					return true;
tron@4471: 				}
truelight@0: 			}
tron@4471: 			break;
tron@4471: 
truelight@7120: 		case ZOOM_LVL_OUT_4X:
truelight@7149: 		case ZOOM_LVL_OUT_8X:
truelight@7149: 			x = ScaleByZoom(x - vp->left + ScaleByZoom(1, vp->zoom) - 1, vp->zoom) + vp->virtual_left;
truelight@7149: 			y = ScaleByZoom(y - vp->top  + ScaleByZoom(1, vp->zoom) - 1, vp->zoom) + vp->virtual_top;
truelight@7149: 
tron@4471: 			FOR_ALL_STATIONS(st) {
tron@4471: 				if (y >= st->sign.top &&
truelight@7149: 						y < st->sign.top + ScaleByZoom(12, vp->zoom) &&
tron@4471: 						x >= st->sign.left &&
truelight@7149: 						x < st->sign.left + ScaleByZoom(st->sign.width_2, vp->zoom)) {
tron@4471: 					ShowStationViewWindow(st->index);
tron@4471: 					return true;
tron@4471: 				}
truelight@0: 			}
tron@4471: 			break;
truelight@7149: 
truelight@7149: 		default: NOT_REACHED();
truelight@0: 	}
truelight@0: 
truelight@0: 	return false;
truelight@0: }
truelight@0: 
tron@4471: 
tron@2116: static bool CheckClickOnSign(const ViewPort *vp, int x, int y)
truelight@0: {
truelight@4349: 	const Sign *si;
truelight@0: 
smatz@9302: 	/* Signs are turned off, or they are transparent and invisibility is ON, or player is a spectator */
smatz@9302: 	if (!HasBit(_display_opt, DO_SHOW_SIGNS) || IsInvisibilitySet(TO_SIGNS) || _current_player == PLAYER_SPECTATOR) return false;
truelight@0: 
tron@4471: 	switch (vp->zoom) {
truelight@7120: 		case ZOOM_LVL_NORMAL:
tron@4471: 			x = x - vp->left + vp->virtual_left;
tron@4471: 			y = y - vp->top  + vp->virtual_top;
tron@4471: 			FOR_ALL_SIGNS(si) {
tron@4471: 				if (y >= si->sign.top &&
tron@4471: 						y <  si->sign.top + 12 &&
tron@4471: 						x >= si->sign.left &&
tron@4471: 						x <  si->sign.left + si->sign.width_1) {
smatz@10947: 					HandleClickOnSign(si);
tron@4471: 					return true;
tron@4471: 				}
truelight@0: 			}
tron@4471: 			break;
tron@4471: 
truelight@7120: 		case ZOOM_LVL_OUT_2X:
tron@4471: 			x = (x - vp->left + 1) * 2 + vp->virtual_left;
tron@4471: 			y = (y - vp->top  + 1) * 2 + vp->virtual_top;
tron@4471: 			FOR_ALL_SIGNS(si) {
tron@4471: 				if (y >= si->sign.top &&
tron@4471: 						y <  si->sign.top + 24 &&
tron@4471: 						x >= si->sign.left &&
tron@4471: 						x <  si->sign.left + si->sign.width_1 * 2) {
smatz@10947: 					HandleClickOnSign(si);
tron@4471: 					return true;
tron@4471: 				}
truelight@0: 			}
tron@4471: 			break;
tron@4471: 
truelight@7120: 		case ZOOM_LVL_OUT_4X:
truelight@7149: 		case ZOOM_LVL_OUT_8X:
truelight@7149: 			x = ScaleByZoom(x - vp->left + ScaleByZoom(1, vp->zoom) - 1, vp->zoom) + vp->virtual_left;
truelight@7149: 			y = ScaleByZoom(y - vp->top  + ScaleByZoom(1, vp->zoom) - 1, vp->zoom) + vp->virtual_top;
truelight@7149: 
tron@4471: 			FOR_ALL_SIGNS(si) {
tron@4471: 				if (y >= si->sign.top &&
truelight@7149: 						y <  si->sign.top + ScaleByZoom(12, vp->zoom) &&
tron@4471: 						x >= si->sign.left &&
truelight@7149: 						x <  si->sign.left + ScaleByZoom(si->sign.width_2, vp->zoom)) {
smatz@10947: 					HandleClickOnSign(si);
tron@4471: 					return true;
tron@4471: 				}
truelight@0: 			}
tron@4471: 			break;
truelight@7149: 
truelight@7149: 		default: NOT_REACHED();
truelight@0: 	}
truelight@0: 
truelight@0: 	return false;
truelight@0: }
truelight@0: 
tron@4471: 
tron@2116: static bool CheckClickOnWaypoint(const ViewPort *vp, int x, int y)
truelight@0: {
tron@2116: 	const Waypoint *wp;
truelight@0: 
skidd13@8424: 	if (!HasBit(_display_opt, DO_WAYPOINTS)) return false;
truelight@0: 
tron@4471: 	switch (vp->zoom) {
truelight@7120: 		case ZOOM_LVL_NORMAL:
tron@4471: 			x = x - vp->left + vp->virtual_left;
tron@4471: 			y = y - vp->top  + vp->virtual_top;
tron@4471: 			FOR_ALL_WAYPOINTS(wp) {
tron@4471: 				if (y >= wp->sign.top &&
tron@4471: 						y < wp->sign.top + 12 &&
tron@4471: 						x >= wp->sign.left &&
tron@4471: 						x < wp->sign.left + wp->sign.width_1) {
tron@4471: 					ShowRenameWaypointWindow(wp);
tron@4471: 					return true;
tron@4471: 				}
truelight@0: 			}
tron@4471: 			break;
tron@4471: 
truelight@7120: 		case ZOOM_LVL_OUT_2X:
tron@4471: 			x = (x - vp->left + 1) * 2 + vp->virtual_left;
tron@4471: 			y = (y - vp->top  + 1) * 2 + vp->virtual_top;
tron@4471: 			FOR_ALL_WAYPOINTS(wp) {
tron@4471: 				if (y >= wp->sign.top &&
tron@4471: 						y < wp->sign.top + 24 &&
tron@4471: 						x >= wp->sign.left &&
tron@4471: 						x < wp->sign.left + wp->sign.width_1 * 2) {
tron@4471: 					ShowRenameWaypointWindow(wp);
tron@4471: 					return true;
tron@4471: 				}
truelight@0: 			}
tron@4471: 			break;
tron@4471: 
truelight@7120: 		case ZOOM_LVL_OUT_4X:
truelight@7149: 		case ZOOM_LVL_OUT_8X:
truelight@7149: 			x = ScaleByZoom(x - vp->left + ScaleByZoom(1, vp->zoom) - 1, vp->zoom) + vp->virtual_left;
truelight@7149: 			y = ScaleByZoom(y - vp->top  + ScaleByZoom(1, vp->zoom) - 1, vp->zoom) + vp->virtual_top;
truelight@7149: 
tron@4471: 			FOR_ALL_WAYPOINTS(wp) {
tron@4471: 				if (y >= wp->sign.top &&
truelight@7149: 						y < wp->sign.top + ScaleByZoom(12, vp->zoom) &&
tron@4471: 						x >= wp->sign.left &&
truelight@7149: 						x < wp->sign.left + ScaleByZoom(wp->sign.width_2, vp->zoom)) {
tron@4471: 					ShowRenameWaypointWindow(wp);
tron@4471: 					return true;
tron@4471: 				}
truelight@0: 			}
tron@4471: 			break;
truelight@7149: 
truelight@7149: 		default: NOT_REACHED();
truelight@0: 	}
truelight@0: 
truelight@0: 	return false;
truelight@0: }
truelight@0: 
truelight@0: 
tron@2116: static void CheckClickOnLandscape(const ViewPort *vp, int x, int y)
truelight@0: {
tron@2116: 	Point pt = TranslateXYToTileCoord(vp, x, y);
tron@1977: 
tron@1980: 	if (pt.x != -1) ClickTile(TileVirtXY(pt.x, pt.y));
truelight@0: }
truelight@0: 
tron@2662: 
tron@2662: static void SafeShowTrainViewWindow(const Vehicle* v)
tron@2662: {
rubidium@7993: 	if (!IsFrontEngine(v)) v = v->First();
rubidium@7982: 	ShowVehicleViewWindow(v);
tron@2662: }
tron@2662: 
maedhros@7353: static void SafeShowRoadVehViewWindow(const Vehicle *v)
maedhros@7353: {
rubidium@7993: 	if (!IsRoadVehFront(v)) v = v->First();
rubidium@7982: 	ShowVehicleViewWindow(v);
maedhros@7353: }
maedhros@7353: 
belugas@4171: static void Nop(const Vehicle *v) {}
tron@2662: 
belugas@4171: typedef void OnVehicleClickProc(const Vehicle *v);
tron@2662: static OnVehicleClickProc* const _on_vehicle_click_proc[] = {
tron@2662: 	SafeShowTrainViewWindow,
maedhros@7353: 	SafeShowRoadVehViewWindow,
rubidium@7982: 	ShowVehicleViewWindow,
rubidium@7982: 	ShowVehicleViewWindow,
tron@2662: 	Nop, // Special vehicles
tron@2662: 	Nop  // Disaster vehicles
truelight@0: };
truelight@0: 
tron@2116: void HandleViewportClicked(const ViewPort *vp, int x, int y)
truelight@0: {
belugas@4171: 	const Vehicle *v;
truelight@0: 
tron@2116: 	if (CheckClickOnTown(vp, x, y)) return;
tron@2116: 	if (CheckClickOnStation(vp, x, y)) return;
tron@2116: 	if (CheckClickOnSign(vp, x, y)) return;
tron@2116: 	if (CheckClickOnWaypoint(vp, x, y)) return;
truelight@0: 	CheckClickOnLandscape(vp, x, y);
truelight@0: 
tron@2116: 	v = CheckClickOnVehicle(vp, x, y);
celestar@3809: 	if (v != NULL) {
Darkvater@5568: 		DEBUG(misc, 2, "Vehicle %d (index %d) at %p", v->unitnumber, v->index, v);
bjarni@6206: 		_on_vehicle_click_proc[v->type](v);
celestar@3809: 	}
truelight@0: }
truelight@0: 
rubidium@6573: Vehicle *CheckMouseOverVehicle()
truelight@0: {
belugas@4171: 	const Window *w;
belugas@4171: 	const ViewPort *vp;
truelight@0: 
truelight@0: 	int x = _cursor.pos.x;
truelight@0: 	int y = _cursor.pos.y;
truelight@0: 
truelight@0: 	w = FindWindowFromPt(x, y);
tron@2116: 	if (w == NULL) return NULL;
truelight@0: 
truelight@0: 	vp = IsPtInWindowViewport(w, x, y);
tron@2116: 	return (vp != NULL) ? CheckClickOnVehicle(vp, x, y) : NULL;
truelight@0: }
truelight@0: 
truelight@0: 
truelight@0: 
rubidium@6573: void PlaceObject()
truelight@0: {
truelight@0: 	Point pt;
truelight@0: 	Window *w;
truelight@193: 
truelight@0: 	pt = GetTileBelowCursor();
tron@2116: 	if (pt.x == -1) return;
truelight@0: 
dominik@1070: 	if (_thd.place_mode == VHM_POINT) {
truelight@0: 		pt.x += 8;
truelight@0: 		pt.y += 8;
truelight@0: 	}
truelight@0: 
truelight@0: 	_tile_fract_coords.x = pt.x & 0xF;
truelight@0: 	_tile_fract_coords.y = pt.y & 0xF;
truelight@0: 
tron@2116: 	w = GetCallbackWnd();
rubidium@10486: 	if (w != NULL) w->OnPlaceObject(pt, TileVirtXY(pt.x, pt.y));
truelight@0: }
truelight@0: 
darkvater@152: 
darkvater@152: /* scrolls the viewport in a window to a given location */
peter1138@7226: bool ScrollWindowTo(int x , int y, Window *w, bool instant)
darkvater@152: {
rubidium@8969: 	/* The slope cannot be acquired outside of the map, so make sure we are always within the map. */
rubidium@8969: 	Point pt = MapXYZToViewport(w->viewport, x, y, GetSlopeZ(Clamp(x, 0, MapSizeX()), Clamp(y, 0, MapSizeY())));
glx@10504: 	w->viewport->follow_vehicle = INVALID_VEHICLE;
glx@10504: 
glx@10504: 	if (w->viewport->dest_scrollpos_x == pt.x && w->viewport->dest_scrollpos_y == pt.y)
tron@2116: 		return false;
darkvater@152: 
peter1138@7227: 	if (instant) {
glx@10504: 		w->viewport->scrollpos_x = pt.x;
glx@10504: 		w->viewport->scrollpos_y = pt.y;
peter1138@7226: 	}
peter1138@7226: 
glx@10504: 	w->viewport->dest_scrollpos_x = pt.x;
glx@10504: 	w->viewport->dest_scrollpos_y = pt.y;
darkvater@152: 	return true;
darkvater@152: }
darkvater@152: 
peter1138@7226: bool ScrollMainWindowToTile(TileIndex tile, bool instant)
truelight@0: {
peter1138@7226: 	return ScrollMainWindowTo(TileX(tile) * TILE_SIZE + TILE_SIZE / 2, TileY(tile) * TILE_SIZE + TILE_SIZE / 2, instant);
truelight@0: }
truelight@0: 
truelight@0: void SetRedErrorSquare(TileIndex tile)
truelight@0: {
truelight@0: 	TileIndex old;
truelight@0: 
truelight@0: 	old = _thd.redsq;
truelight@0: 	_thd.redsq = tile;
truelight@0: 
truelight@0: 	if (tile != old) {
celestar@3281: 		if (tile != 0) MarkTileDirtyByTile(tile);
celestar@3281: 		if (old  != 0) MarkTileDirtyByTile(old);
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: void SetTileSelectSize(int w, int h)
truelight@0: {
celestar@3421: 	_thd.new_size.x = w * TILE_SIZE;
celestar@3421: 	_thd.new_size.y = h * TILE_SIZE;
tron@1863: 	_thd.new_outersize.x = 0;
tron@1863: 	_thd.new_outersize.y = 0;
truelight@0: }
truelight@0: 
tron@2116: void SetTileSelectBigSize(int ox, int oy, int sx, int sy)
tron@2116: {
celestar@3421: 	_thd.offs.x = ox * TILE_SIZE;
celestar@3421: 	_thd.offs.y = oy * TILE_SIZE;
celestar@3421: 	_thd.new_outersize.x = sx * TILE_SIZE;
celestar@3421: 	_thd.new_outersize.y = sy * TILE_SIZE;
truelight@0: }
truelight@0: 
belugas@6919: /** returns the best autorail highlight type from map coordinates */
rubidium@8720: static HighLightStyle GetAutorailHT(int x, int y)
dominik@1070: {
rubidium@8720: 	return HT_RAIL | _autorail_piece[x & 0xF][y & 0xF];
dominik@1070: }
truelight@0: 
belugas@7574: /**
belugas@7574:  * Updates tile highlighting for all cases.
belugas@7574:  * Uses _thd.selstart and _thd.selend and _thd.place_mode (set elsewhere) to determine _thd.pos and _thd.size
belugas@7574:  * Also drawstyle is determined. Uses _thd.new.* as a buffer and calls SetSelectionTilesDirty() twice,
belugas@7574:  * Once for the old and once for the new selection.
belugas@7574:  * _thd is TileHighlightData, found in viewport.h
belugas@7574:  * Called by MouseLoop() in windows.cpp
belugas@7574:  */
rubidium@6573: void UpdateTileSelection()
truelight@0: {
tron@2116: 	int x1;
tron@2116: 	int y1;
truelight@0: 
tron@1863: 	_thd.new_drawstyle = 0;
truelight@0: 
tron@1863: 	if (_thd.place_mode == VHM_SPECIAL) {
tron@1863: 		x1 = _thd.selend.x;
tron@1863: 		y1 = _thd.selend.y;
truelight@0: 		if (x1 != -1) {
smatz@8408: 			int x2 = _thd.selstart.x & ~0xF;
smatz@8408: 			int y2 = _thd.selstart.y & ~0xF;
truelight@0: 			x1 &= ~0xF;
truelight@0: 			y1 &= ~0xF;
truelight@193: 
tron@6432: 			if (x1 >= x2) Swap(x1, x2);
tron@6432: 			if (y1 >= y2) Swap(y1, y2);
tron@1863: 			_thd.new_pos.x = x1;
tron@1863: 			_thd.new_pos.y = y1;
celestar@3421: 			_thd.new_size.x = x2 - x1 + TILE_SIZE;
celestar@3421: 			_thd.new_size.y = y2 - y1 + TILE_SIZE;
tron@1863: 			_thd.new_drawstyle = _thd.next_drawstyle;
truelight@0: 		}
tron@1863: 	} else if (_thd.place_mode != VHM_NONE) {
tron@2116: 		Point pt = GetTileBelowCursor();
truelight@0: 		x1 = pt.x;
truelight@0: 		y1 = pt.y;
truelight@0: 		if (x1 != -1) {
tron@1863: 			switch (_thd.place_mode) {
dominik@1070: 				case VHM_RECT:
tron@1863: 					_thd.new_drawstyle = HT_RECT;
dominik@1070: 					break;
dominik@1070: 				case VHM_POINT:
tron@1863: 					_thd.new_drawstyle = HT_POINT;
dominik@1070: 					x1 += 8;
dominik@1070: 					y1 += 8;
dominik@1070: 					break;
dominik@1070: 				case VHM_RAIL:
tron@1863: 					_thd.new_drawstyle = GetAutorailHT(pt.x, pt.y); // draw one highlighted tile
smatz@8414: 					break;
smatz@8414: 				default:
smatz@8414: 					NOT_REACHED();
smatz@8414: 					break;
truelight@0: 			}
tron@1863: 			_thd.new_pos.x = x1 & ~0xF;
tron@1863: 			_thd.new_pos.y = y1 & ~0xF;
truelight@0: 		}
truelight@0: 	}
truelight@0: 
belugas@6919: 	/* redraw selection */
tron@1863: 	if (_thd.drawstyle != _thd.new_drawstyle ||
tron@1863: 			_thd.pos.x != _thd.new_pos.x || _thd.pos.y != _thd.new_pos.y ||
Darkvater@4539: 			_thd.size.x != _thd.new_size.x || _thd.size.y != _thd.new_size.y ||
belugas@7574: 			_thd.outersize.x != _thd.new_outersize.x ||
belugas@7574: 			_thd.outersize.y != _thd.new_outersize.y) {
belugas@6919: 		/* clear the old selection? */
tron@1863: 		if (_thd.drawstyle) SetSelectionTilesDirty();
truelight@0: 
tron@1863: 		_thd.drawstyle = _thd.new_drawstyle;
tron@1863: 		_thd.pos = _thd.new_pos;
tron@1863: 		_thd.size = _thd.new_size;
tron@1863: 		_thd.outersize = _thd.new_outersize;
tron@1863: 		_thd.dirty = 0xff;
truelight@0: 
belugas@6919: 		/* draw the new selection? */
tron@1863: 		if (_thd.new_drawstyle) SetSelectionTilesDirty();
truelight@0: 	}
truelight@0: }
truelight@0: 
belugas@6919: /** highlighting tiles while only going over them with the mouse */
rubidium@10466: void VpStartPlaceSizing(TileIndex tile, ViewportPlaceMethod method, ViewportDragDropSelectionProcess process)
truelight@0: {
maedhros@7165: 	_thd.select_method = method;
maedhros@7165: 	_thd.select_proc   = process;
celestar@3421: 	_thd.selend.x = TileX(tile) * TILE_SIZE;
celestar@3421: 	_thd.selstart.x = TileX(tile) * TILE_SIZE;
celestar@3421: 	_thd.selend.y = TileY(tile) * TILE_SIZE;
celestar@3421: 	_thd.selstart.y = TileY(tile) * TILE_SIZE;
smatz@8408: 
smatz@8408: 	/* Needed so several things (road, autoroad, bridges, ...) are placed correctly.
smatz@8408: 	 * In effect, placement starts from the centre of a tile
smatz@8408: 	 */
smatz@8408: 	if (method == VPM_X_OR_Y || method == VPM_FIX_X || method == VPM_FIX_Y) {
smatz@8408: 		_thd.selend.x += TILE_SIZE / 2;
smatz@8408: 		_thd.selend.y += TILE_SIZE / 2;
smatz@8408: 		_thd.selstart.x += TILE_SIZE / 2;
smatz@8408: 		_thd.selstart.y += TILE_SIZE / 2;
smatz@8408: 	}
smatz@8408: 
tron@1863: 	if (_thd.place_mode == VHM_RECT) {
tron@1863: 		_thd.place_mode = VHM_SPECIAL;
tron@1863: 		_thd.next_drawstyle = HT_RECT;
tron@1863: 	} else if (_thd.place_mode == VHM_RAIL) { // autorail one piece
tron@1863: 		_thd.place_mode = VHM_SPECIAL;
tron@1863: 		_thd.next_drawstyle = _thd.drawstyle;
truelight@0: 	} else {
tron@1863: 		_thd.place_mode = VHM_SPECIAL;
tron@1863: 		_thd.next_drawstyle = HT_POINT;
truelight@0: 	}
truelight@0: 	_special_mouse_mode = WSM_SIZING;
truelight@0: }
truelight@0: 
truelight@0: void VpSetPlaceSizingLimit(int limit)
truelight@0: {
truelight@0: 	_thd.sizelimit = limit;
truelight@0: }
truelight@0: 
Darkvater@4834: /**
Darkvater@4834: * Highlights all tiles between a set of two tiles. Used in dock and tunnel placement
Darkvater@4834: * @param from TileIndex of the first tile to highlight
Darkvater@4834: * @param to TileIndex of the last tile to highlight */
Darkvater@4834: void VpSetPresizeRange(TileIndex from, TileIndex to)
truelight@0: {
rubidium@7502: 	uint64 distance = DistanceManhattan(from, to) + 1;
Darkvater@4834: 
celestar@3421: 	_thd.selend.x = TileX(to) * TILE_SIZE;
celestar@3421: 	_thd.selend.y = TileY(to) * TILE_SIZE;
celestar@3421: 	_thd.selstart.x = TileX(from) * TILE_SIZE;
celestar@3421: 	_thd.selstart.y = TileY(from) * TILE_SIZE;
tron@1863: 	_thd.next_drawstyle = HT_RECT;
Darkvater@4834: 
Darkvater@4834: 	/* show measurement only if there is any length to speak of */
Darkvater@4834: 	if (distance > 1) GuiShowTooltipsWithArgs(STR_MEASURE_LENGTH, 1, &distance);
truelight@0: }
truelight@0: 
rubidium@6573: static void VpStartPreSizing()
truelight@0: {
truelight@0: 	_thd.selend.x = -1;
truelight@0: 	_special_mouse_mode = WSM_PRESIZE;
truelight@0: }
truelight@0: 
belugas@6919: /** returns information about the 2x1 piece to be build.
dominik@1070:  * The lower bits (0-3) are the track type. */
rubidium@8720: static HighLightStyle Check2x1AutoRail(int mode)
dominik@1070: {
dominik@1070: 	int fxpy = _tile_fract_coords.x + _tile_fract_coords.y;
tron@1863: 	int sxpy = (_thd.selend.x & 0xF) + (_thd.selend.y & 0xF);
dominik@1070: 	int fxmy = _tile_fract_coords.x - _tile_fract_coords.y;
tron@1863: 	int sxmy = (_thd.selend.x & 0xF) - (_thd.selend.y & 0xF);
dominik@1070: 
tron@2952: 	switch (mode) {
rubidium@8720: 		default: NOT_REACHED();
rubidium@8720: 		case 0: // end piece is lower right
rubidium@8720: 			if (fxpy >= 20 && sxpy <= 12) { /*SwapSelection(); DoRailroadTrack(0); */return HT_DIR_HL; }
rubidium@8720: 			if (fxmy < -3 && sxmy > 3) {/* DoRailroadTrack(0); */return HT_DIR_VR; }
rubidium@8720: 			return HT_DIR_Y;
rubidium@8720: 
rubidium@8720: 		case 1:
rubidium@8720: 			if (fxmy > 3 && sxmy < -3) { /*SwapSelection(); DoRailroadTrack(0); */return HT_DIR_VL; }
rubidium@8720: 			if (fxpy <= 12 && sxpy >= 20) { /*DoRailroadTrack(0); */return HT_DIR_HU; }
rubidium@8720: 			return HT_DIR_Y;
rubidium@8720: 
rubidium@8720: 		case 2:
rubidium@8720: 			if (fxmy > 3 && sxmy < -3) { /*DoRailroadTrack(3);*/ return HT_DIR_VL; }
rubidium@8720: 			if (fxpy >= 20 && sxpy <= 12) { /*SwapSelection(); DoRailroadTrack(0); */return HT_DIR_HL; }
rubidium@8720: 			return HT_DIR_X;
rubidium@8720: 
rubidium@8720: 		case 3:
rubidium@8720: 			if (fxmy < -3 && sxmy > 3) { /*SwapSelection(); DoRailroadTrack(3);*/ return HT_DIR_VR; }
rubidium@8720: 			if (fxpy <= 12 && sxpy >= 20) { /*DoRailroadTrack(0); */return HT_DIR_HU; }
rubidium@8720: 			return HT_DIR_X;
dominik@1070: 	}
dominik@1070: }
dominik@1070: 
Darkvater@4834: /** Check if the direction of start and end tile should be swapped based on
Darkvater@4834:  * the dragging-style. Default directions are:
Darkvater@4834:  * in the case of a line (HT_RAIL, HT_LINE):  DIR_NE, DIR_NW, DIR_N, DIR_E
Darkvater@4834:  * in the case of a rect (HT_RECT, HT_POINT): DIR_S, DIR_E
Darkvater@4834:  * For example dragging a rectangle area from south to north should be swapped to
Darkvater@4834:  * north-south (DIR_S) to obtain the same results with less code. This is what
Darkvater@4834:  * the return value signifies.
Darkvater@4834:  * @param style HighLightStyle dragging style
belugas@6980:  * @param start_tile start tile of drag
belugas@6980:  * @param end_tile end tile of drag
belugas@6980:  * @return boolean value which when true means start/end should be swapped */
Darkvater@4834: static bool SwapDirection(HighLightStyle style, TileIndex start_tile, TileIndex end_tile)
Darkvater@4834: {
Darkvater@4834: 	uint start_x = TileX(start_tile);
Darkvater@4834: 	uint start_y = TileY(start_tile);
Darkvater@4834: 	uint end_x = TileX(end_tile);
Darkvater@4834: 	uint end_y = TileY(end_tile);
Darkvater@4834: 
Darkvater@4834: 	switch (style & HT_DRAG_MASK) {
Darkvater@4834: 		case HT_RAIL:
Darkvater@4834: 		case HT_LINE: return (end_x > start_x || (end_x == start_x && end_y > start_y));
Darkvater@4834: 
Darkvater@4834: 		case HT_RECT:
Darkvater@4834: 		case HT_POINT: return (end_x != start_x && end_y < start_y);
Darkvater@4834: 		default: NOT_REACHED();
Darkvater@4834: 	}
Darkvater@4834: 
Darkvater@4834: 	return false;
Darkvater@4834: }
Darkvater@4834: 
Darkvater@4834: /** Calculates height difference between one tile and another
Darkvater@4834: * Multiplies the result to suit the standard given by minimap - 50 meters high
Darkvater@4834: * To correctly get the height difference we need the direction we are dragging
Darkvater@4834: * in, as well as with what kind of tool we are dragging. For example a horizontal
Darkvater@4834: * autorail tool that starts in bottom and ends at the top of a tile will need the
rubidium@6987: * maximum of SW, S and SE, N corners respectively. This is handled by the lookup table below
Darkvater@4834: * See _tileoffs_by_dir in map.c for the direction enums if you can't figure out
Darkvater@4834: * the values yourself.
Darkvater@4834: * @param style HightlightStyle of drag. This includes direction and style (autorail, rect, etc.)
Darkvater@4834: * @param distance amount of tiles dragged, important for horizontal/vertical drags
Darkvater@4834: *        ignored for others
Darkvater@4834: * @param start_tile, end_tile start and end tile of drag operation
Darkvater@4834: * @return height difference between two tiles. Tile measurement tool utilizes
Darkvater@4834: * this value in its tooltips */
Darkvater@4834: static int CalcHeightdiff(HighLightStyle style, uint distance, TileIndex start_tile, TileIndex end_tile)
Darkvater@4834: {
Darkvater@4834: 	bool swap = SwapDirection(style, start_tile, end_tile);
Darkvater@4834: 	byte style_t;
Darkvater@4834: 	uint h0, h1, ht; // start heigth, end height, and temp variable
Darkvater@4834: 
Darkvater@4834: 	if (start_tile == end_tile) return 0;
tron@5984: 	if (swap) Swap(start_tile, end_tile);
Darkvater@4834: 
Darkvater@4834: 	switch (style & HT_DRAG_MASK) {
Darkvater@4834: 		case HT_RECT: {
Darkvater@4834: 			static const TileIndexDiffC heightdiff_area_by_dir[] = {
Darkvater@4834: 				/* Start */ {1, 0}, /* Dragging east */ {0, 0}, /* Dragging south */
Darkvater@4834: 				/* End   */ {0, 1}, /* Dragging east */ {1, 1}  /* Dragging south */
Darkvater@4834: 			};
Darkvater@4834: 
Darkvater@4834: 			/* In the case of an area we can determine whether we were dragging south or
Darkvater@4834: 			 * east by checking the X-coordinates of the tiles */
Darkvater@4834: 			style_t = (byte)(TileX(end_tile) > TileX(start_tile));
Darkvater@4834: 			start_tile = TILE_ADD(start_tile, ToTileIndexDiff(heightdiff_area_by_dir[style_t]));
Darkvater@4834: 			end_tile   = TILE_ADD(end_tile, ToTileIndexDiff(heightdiff_area_by_dir[2 + style_t]));
Darkvater@4834: 		}
Darkvater@4834: 		/* Fallthrough */
Darkvater@4834: 		case HT_POINT:
Darkvater@4834: 			h0 = TileHeight(start_tile);
Darkvater@4834: 			h1 = TileHeight(end_tile);
Darkvater@4834: 			break;
Darkvater@4834: 		default: { /* All other types, this is mostly only line/autorail */
Darkvater@4834: 			static const HighLightStyle flip_style_direction[] = {
Darkvater@4834: 				HT_DIR_X, HT_DIR_Y, HT_DIR_HL, HT_DIR_HU, HT_DIR_VR, HT_DIR_VL
Darkvater@4834: 			};
Darkvater@4834: 			static const TileIndexDiffC heightdiff_line_by_dir[] = {
Darkvater@4834: 				/* Start */ {1, 0}, {1, 1}, /* HT_DIR_X  */ {0, 1}, {1, 1}, /* HT_DIR_Y  */
Darkvater@4834: 				/* Start */ {1, 0}, {0, 0}, /* HT_DIR_HU */ {1, 0}, {1, 1}, /* HT_DIR_HL */
Darkvater@4834: 				/* Start */ {1, 0}, {1, 1}, /* HT_DIR_VL */ {0, 1}, {1, 1}, /* HT_DIR_VR */
Darkvater@4834: 
Darkvater@4834: 				/* Start */ {0, 1}, {0, 0}, /* HT_DIR_X  */ {1, 0}, {0, 0}, /* HT_DIR_Y  */
Darkvater@4834: 				/* End   */ {0, 1}, {0, 0}, /* HT_DIR_HU */ {1, 1}, {0, 1}, /* HT_DIR_HL */
Darkvater@4834: 				/* End   */ {1, 0}, {0, 0}, /* HT_DIR_VL */ {0, 0}, {0, 1}, /* HT_DIR_VR */
Darkvater@4834: 			};
Darkvater@4834: 
Darkvater@4834: 			distance %= 2; // we're only interested if the distance is even or uneven
Darkvater@4834: 			style &= HT_DIR_MASK;
Darkvater@4834: 
Darkvater@4834: 			/* To handle autorail, we do some magic to be able to use a lookup table.
Darkvater@4834: 			 * Firstly if we drag the other way around, we switch start&end, and if needed
Darkvater@4834: 			 * also flip the drag-position. Eg if it was on the left, and the distance is even
Darkvater@4834: 			 * that means the end, which is now the start is on the right */
Darkvater@4834: 			if (swap && distance == 0) style = flip_style_direction[style];
Darkvater@4834: 
Darkvater@4834: 			/* Use lookup table for start-tile based on HighLightStyle direction */
Darkvater@4834: 			style_t = style * 2;
Darkvater@4834: 			assert(style_t < lengthof(heightdiff_line_by_dir) - 13);
Darkvater@4834: 			h0 = TileHeight(TILE_ADD(start_tile, ToTileIndexDiff(heightdiff_line_by_dir[style_t])));
Darkvater@4834: 			ht = TileHeight(TILE_ADD(start_tile, ToTileIndexDiff(heightdiff_line_by_dir[style_t + 1])));
celestar@5852: 			h0 = max(h0, ht);
Darkvater@4834: 
Darkvater@4834: 			/* Use lookup table for end-tile based on HighLightStyle direction
Darkvater@4834: 			 * flip around side (lower/upper, left/right) based on distance */
Darkvater@4834: 			if (distance == 0) style_t = flip_style_direction[style] * 2;
Darkvater@4834: 			assert(style_t < lengthof(heightdiff_line_by_dir) - 13);
Darkvater@4834: 			h1 = TileHeight(TILE_ADD(end_tile, ToTileIndexDiff(heightdiff_line_by_dir[12 + style_t])));
Darkvater@4834: 			ht = TileHeight(TILE_ADD(end_tile, ToTileIndexDiff(heightdiff_line_by_dir[12 + style_t + 1])));
celestar@5852: 			h1 = max(h1, ht);
Darkvater@4834: 		} break;
Darkvater@4834: 	}
Darkvater@4834: 
tron@5984: 	if (swap) Swap(h0, h1);
Darkvater@4834: 	/* Minimap shows height in intervals of 50 meters, let's do the same */
Darkvater@4834: 	return (int)(h1 - h0) * 50;
Darkvater@4834: }
dominik@1070: 
glx@4885: static const StringID measure_strings_length[] = {STR_NULL, STR_MEASURE_LENGTH, STR_MEASURE_LENGTH_HEIGHTDIFF};
Darkvater@4884: 
belugas@6919: /** while dragging */
dominik@1070: static void CalcRaildirsDrawstyle(TileHighlightData *thd, int x, int y, int method)
truelight@0: {
Darkvater@4799: 	HighLightStyle b;
Darkvater@4799: 	uint w, h;
truelight@193: 
Darkvater@4799: 	int dx = thd->selstart.x - (thd->selend.x & ~0xF);
Darkvater@4799: 	int dy = thd->selstart.y - (thd->selend.y & ~0xF);
skidd13@8419: 	w = abs(dx) + 16;
skidd13@8419: 	h = abs(dy) + 16;
truelight@0: 
tron@1980: 	if (TileVirtXY(thd->selstart.x, thd->selstart.y) == TileVirtXY(x, y)) { // check if we're only within one tile
tron@4077: 		if (method == VPM_RAILDIRS) {
tron@2116: 			b = GetAutorailHT(x, y);
tron@4077: 		} else { // rect for autosignals on one tile
tron@2116: 			b = HT_RECT;
tron@4077: 		}
dominik@1070: 	} else if (h == 16) { // Is this in X direction?
tron@4077: 		if (dx == 16) { // 2x1 special handling
dominik@1070: 			b = (Check2x1AutoRail(3)) | HT_LINE;
tron@4077: 		} else if (dx == -16) {
dominik@1070: 			b = (Check2x1AutoRail(2)) | HT_LINE;
tron@4077: 		} else {
dominik@1070: 			b = HT_LINE | HT_DIR_X;
tron@4077: 		}
dominik@1070: 		y = thd->selstart.y;
dominik@1070: 	} else if (w == 16) { // Or Y direction?
tron@4077: 		if (dy == 16) { // 2x1 special handling
dominik@1070: 			b = (Check2x1AutoRail(1)) | HT_LINE;
tron@4077: 		} else if (dy == -16) { // 2x1 other direction
dominik@1070: 			b = (Check2x1AutoRail(0)) | HT_LINE;
tron@4077: 		} else {
dominik@1070: 			b = HT_LINE | HT_DIR_Y;
tron@4077: 		}
truelight@0: 		x = thd->selstart.x;
dominik@1070: 	} else if (w > h * 2) { // still count as x dir?
tron@2116: 		b = HT_LINE | HT_DIR_X;
truelight@0: 		y = thd->selstart.y;
dominik@1070: 	} else if (h > w * 2) { // still count as y dir?
tron@2116: 		b = HT_LINE | HT_DIR_Y;
dominik@1070: 		x = thd->selstart.x;
dominik@1070: 	} else { // complicated direction
Darkvater@4799: 		int d = w - h;
tron@2116: 		thd->selend.x = thd->selend.x & ~0xF;
tron@2116: 		thd->selend.y = thd->selend.y & ~0xF;
truelight@0: 
truelight@0: 		// four cases.
truelight@0: 		if (x > thd->selstart.x) {
truelight@0: 			if (y > thd->selstart.y) {
truelight@0: 				// south
tron@2116: 				if (d == 0) {
tron@2116: 					b = (x & 0xF) > (y & 0xF) ? HT_LINE | HT_DIR_VL : HT_LINE | HT_DIR_VR;
tron@2116: 				} else if (d >= 0) {
tron@2116: 					x = thd->selstart.x + h;
tron@2116: 					b = HT_LINE | HT_DIR_VL;
tron@2116: 					// return px == py || px == py + 16;
tron@2116: 				} else {
tron@2116: 					y = thd->selstart.y + w;
tron@2116: 					b = HT_LINE | HT_DIR_VR;
tron@2116: 				} // return px == py || px == py - 16;
truelight@0: 			} else {
truelight@0: 				// west
tron@2116: 				if (d == 0) {
tron@2116: 					b = (x & 0xF) + (y & 0xF) >= 0x10 ? HT_LINE | HT_DIR_HL : HT_LINE | HT_DIR_HU;
tron@2116: 				} else if (d >= 0) {
tron@2116: 					x = thd->selstart.x + h;
tron@2116: 					b = HT_LINE | HT_DIR_HL;
tron@2116: 				} else {
tron@2116: 					y = thd->selstart.y - w;
tron@2116: 					b = HT_LINE | HT_DIR_HU;
tron@2116: 				}
truelight@0: 			}
truelight@0: 		} else {
truelight@0: 			if (y > thd->selstart.y) {
truelight@0: 				// east
tron@2116: 				if (d == 0) {
tron@2116: 					b = (x & 0xF) + (y & 0xF) >= 0x10 ? HT_LINE | HT_DIR_HL : HT_LINE | HT_DIR_HU;
tron@2116: 				} else if (d >= 0) {
tron@2116: 					x = thd->selstart.x - h;
tron@2116: 					b = HT_LINE | HT_DIR_HU;
tron@2116: 					// return px == -py || px == -py - 16;
tron@2116: 				} else {
tron@2116: 					y = thd->selstart.y + w;
tron@2116: 					b = HT_LINE | HT_DIR_HL;
tron@2116: 				} // return px == -py || px == -py + 16;
truelight@0: 			} else {
truelight@0: 				// north
tron@2116: 				if (d == 0) {
tron@2116: 					b = (x & 0xF) > (y & 0xF) ? HT_LINE | HT_DIR_VL : HT_LINE | HT_DIR_VR;
tron@2116: 				} else if (d >= 0) {
tron@2116: 					x = thd->selstart.x - h;
tron@2116: 					b = HT_LINE | HT_DIR_VR;
tron@2116: 					// return px == py || px == py - 16;
tron@2116: 				} else {
tron@2116: 					y = thd->selstart.y - w;
tron@2116: 					b = HT_LINE | HT_DIR_VL;
tron@2116: 				} //return px == py || px == py + 16;
truelight@0: 			}
truelight@0: 		}
truelight@0: 	}
Darkvater@4834: 
rubidium@10775: 	if (_settings_client.gui.measure_tooltip) {
Darkvater@4834: 		TileIndex t0 = TileVirtXY(thd->selstart.x, thd->selstart.y);
Darkvater@4834: 		TileIndex t1 = TileVirtXY(x, y);
Darkvater@4834: 		uint distance = DistanceManhattan(t0, t1) + 1;
Darkvater@4884: 		byte index = 0;
rubidium@7502: 		uint64 params[2];
Darkvater@4834: 
Darkvater@4884: 		if (distance != 1) {
Darkvater@4884: 			int heightdiff = CalcHeightdiff(b, distance, t0, t1);
Darkvater@4884: 			/* If we are showing a tooltip for horizontal or vertical drags,
Darkvater@4884: 			 * 2 tiles have a length of 1. To bias towards the ceiling we add
Darkvater@4884: 			 * one before division. It feels more natural to count 3 lengths as 2 */
Darkvater@4884: 			if ((b & HT_DIR_MASK) != HT_DIR_X && (b & HT_DIR_MASK) != HT_DIR_Y) {
Darkvater@4884: 				distance = (distance + 1) / 2;
Darkvater@4884: 			}
Darkvater@4884: 
Darkvater@4884: 			params[index++] = distance;
Darkvater@4884: 			if (heightdiff != 0) params[index++] = heightdiff;
Darkvater@4834: 		}
Darkvater@4834: 
Darkvater@4884: 		GuiShowTooltipsWithArgs(measure_strings_length[index], index, params);
Darkvater@4834: 	}
Darkvater@4834: 
truelight@0: 	thd->selend.x = x;
truelight@0: 	thd->selend.y = y;
truelight@0: 	thd->next_drawstyle = b;
truelight@0: }
truelight@0: 
Darkvater@4799: /**
Darkvater@4799:  * Selects tiles while dragging
Darkvater@4799:  * @param x X coordinate of end of selection
Darkvater@4799:  * @param y Y coordinate of end of selection
Darkvater@4799:  * @param method modifies the way tiles are selected. Possible
Darkvater@4799:  * methods are VPM_* in viewport.h */
rubidium@8384: void VpSelectTilesWithMethod(int x, int y, ViewportPlaceMethod method)
truelight@0: {
Darkvater@4799: 	int sx, sy;
Darkvater@4834: 	HighLightStyle style;
tron@1863: 
truelight@0: 	if (x == -1) {
tron@1863: 		_thd.selend.x = -1;
truelight@0: 		return;
truelight@0: 	}
truelight@0: 
Darkvater@4799: 	/* Special handling of drag in any (8-way) direction */
darkvater@58: 	if (method == VPM_RAILDIRS || method == VPM_SIGNALDIRS) {
tron@1863: 		_thd.selend.x = x;
tron@1863: 		_thd.selend.y = y;
tron@1863: 		CalcRaildirsDrawstyle(&_thd, x, y, method);
truelight@0: 		return;
truelight@0: 	}
truelight@0: 
smatz@8408: 	/* Needed so level-land is placed correctly */
tron@2116: 	if (_thd.next_drawstyle == HT_POINT) {
Darkvater@4799: 		x += TILE_SIZE / 2;
Darkvater@4799: 		y += TILE_SIZE / 2;
tron@2116: 	}
truelight@0: 
tron@1863: 	sx = _thd.selstart.x;
tron@1863: 	sy = _thd.selstart.y;
truelight@0: 
tron@2116: 	switch (method) {
Darkvater@4834: 		case VPM_X_OR_Y: /* drag in X or Y direction */
skidd13@8419: 			if (abs(sy - y) < abs(sx - x)) {
tron@4077: 				y = sy;
Darkvater@4834: 				style = HT_DIR_X;
tron@4077: 			} else {
tron@4077: 				x = sx;
Darkvater@4834: 				style = HT_DIR_Y;
tron@4077: 			}
Darkvater@4834: 			goto calc_heightdiff_single_direction;
Darkvater@4834: 		case VPM_FIX_X: /* drag in Y direction */
Darkvater@4834: 			x = sx;
Darkvater@4834: 			style = HT_DIR_Y;
Darkvater@4834: 			goto calc_heightdiff_single_direction;
Darkvater@4834: 		case VPM_FIX_Y: /* drag in X direction */
Darkvater@4834: 			y = sy;
Darkvater@4834: 			style = HT_DIR_X;
Darkvater@4834: 
Darkvater@4834: calc_heightdiff_single_direction:;
rubidium@10775: 			if (_settings_client.gui.measure_tooltip) {
Darkvater@4834: 				TileIndex t0 = TileVirtXY(sx, sy);
Darkvater@4834: 				TileIndex t1 = TileVirtXY(x, y);
Darkvater@4834: 				uint distance = DistanceManhattan(t0, t1) + 1;
Darkvater@4884: 				byte index = 0;
rubidium@7502: 				uint64 params[2];
Darkvater@4834: 
Darkvater@4884: 				if (distance != 1) {
Darkvater@4884: 					/* With current code passing a HT_LINE style to calculate the height
Darkvater@4884: 					 * difference is enough. However if/when a point-tool is created
Darkvater@4884: 					 * with this method, function should be called with new_style (below)
Darkvater@4884: 					 * instead of HT_LINE | style case HT_POINT is handled specially
Darkvater@4884: 					 * new_style := (_thd.next_drawstyle & HT_RECT) ? HT_LINE | style : _thd.next_drawstyle; */
Darkvater@4884: 					int heightdiff = CalcHeightdiff(HT_LINE | style, 0, t0, t1);
Darkvater@4884: 
Darkvater@4884: 					params[index++] = distance;
Darkvater@4884: 					if (heightdiff != 0) params[index++] = heightdiff;
Darkvater@4834: 				}
Darkvater@4884: 
Darkvater@4884: 				GuiShowTooltipsWithArgs(measure_strings_length[index], index, params);
Darkvater@4834: 			} break;
Darkvater@4834: 
Darkvater@4834: 		case VPM_X_AND_Y_LIMITED: { /* drag an X by Y constrained rect area */
Darkvater@4834: 			int limit = (_thd.sizelimit - 1) * TILE_SIZE;
skidd13@8418: 			x = sx + Clamp(x - sx, -limit, limit);
skidd13@8418: 			y = sy + Clamp(y - sy, -limit, limit);
rubidium@5838: 			} /* Fallthrough */
rubidium@5838: 		case VPM_X_AND_Y: { /* drag an X by Y area */
rubidium@10775: 			if (_settings_client.gui.measure_tooltip) {
Darkvater@4884: 				static const StringID measure_strings_area[] = {
Darkvater@4884: 					STR_NULL, STR_NULL, STR_MEASURE_AREA, STR_MEASURE_AREA_HEIGHTDIFF
Darkvater@4884: 				};
Darkvater@4884: 
Darkvater@4834: 				TileIndex t0 = TileVirtXY(sx, sy);
Darkvater@4834: 				TileIndex t1 = TileVirtXY(x, y);
skidd13@8466: 				uint dx = Delta(TileX(t0), TileX(t1)) + 1;
skidd13@8466: 				uint dy = Delta(TileY(t0), TileY(t1)) + 1;
Darkvater@4884: 				byte index = 0;
rubidium@7502: 				uint64 params[3];
Darkvater@4834: 
Darkvater@4834: 				/* If dragging an area (eg dynamite tool) and it is actually a single
Darkvater@4834: 				 * row/column, change the type to 'line' to get proper calculation for height */
rubidium@8720: 				style = (HighLightStyle)_thd.next_drawstyle;
Darkvater@4834: 				if (style & HT_RECT) {
Darkvater@4834: 					if (dx == 1) {
Darkvater@4834: 						style = HT_LINE | HT_DIR_Y;
Darkvater@4834: 					} else if (dy == 1) {
Darkvater@4834: 						style = HT_LINE | HT_DIR_X;
Darkvater@4834: 					}
Darkvater@4834: 				}
Darkvater@4834: 
Darkvater@4884: 				if (dx != 1 || dy != 1) {
Darkvater@4884: 					int heightdiff = CalcHeightdiff(style, 0, t0, t1);
Darkvater@4884: 
Darkvater@4884: 					params[index++] = dx;
Darkvater@4884: 					params[index++] = dy;
Darkvater@4884: 					if (heightdiff != 0) params[index++] = heightdiff;
Darkvater@4834: 				}
Darkvater@4884: 
Darkvater@4884: 				GuiShowTooltipsWithArgs(measure_strings_area[index], index, params);
Darkvater@4834: 			}
Darkvater@4884: 		break;
Darkvater@4834: 
tron@2116: 		}
Darkvater@4834: 		default: NOT_REACHED();
truelight@0: 	}
truelight@0: 
tron@1863: 	_thd.selend.x = x;
tron@1863: 	_thd.selend.y = y;
truelight@0: }
truelight@0: 
rubidium@10638: /**
rubidium@10638:  * Handle the mouse while dragging for placement/resizing.
rubidium@10638:  * @return Boolean whether search for a handler should continue
rubidium@10638:  */
rubidium@6573: bool VpHandlePlaceSizingDrag()
truelight@0: {
tron@2116: 	if (_special_mouse_mode != WSM_SIZING) return true;
truelight@0: 
belugas@6919: 	/* stop drag mode if the window has been closed */
rubidium@10486: 	Window *w = FindWindowById(_thd.window_class, _thd.window_number);
truelight@0: 	if (w == NULL) {
truelight@0: 		ResetObjectToPlace();
truelight@0: 		return false;
truelight@0: 	}
truelight@0: 
belugas@6919: 	/* while dragging execute the drag procedure of the corresponding window (mostly VpSelectTilesWithMethod() ) */
truelight@0: 	if (_left_button_down) {
rubidium@10486: 		w->OnPlaceDrag(_thd.select_method, _thd.select_proc, GetTileBelowCursor());
truelight@0: 		return false;
truelight@0: 	}
truelight@0: 
belugas@6919: 	/* mouse button released..
belugas@6919: 	 * keep the selected tool, but reset it to the original mode. */
truelight@193: 	_special_mouse_mode = WSM_NONE;
tron@2116: 	if (_thd.next_drawstyle == HT_RECT) {
dominik@1070: 		_thd.place_mode = VHM_RECT;
rubidium@10486: 	} else if (_thd.select_method == VPM_SIGNALDIRS) { // some might call this a hack... -- Dominik
tron@2116: 		_thd.place_mode = VHM_RECT;
tron@2116: 	} else if (_thd.next_drawstyle & HT_LINE) {
dominik@1070: 		_thd.place_mode = VHM_RAIL;
tron@2116: 	} else if (_thd.next_drawstyle & HT_RAIL) {
dominik@1070: 		_thd.place_mode = VHM_RAIL;
tron@2116: 	} else {
dominik@1070: 		_thd.place_mode = VHM_POINT;
tron@2116: 	}
truelight@0: 	SetTileSelectSize(1, 1);
truelight@0: 
rubidium@10486: 	w->OnPlaceMouseUp(_thd.select_method, _thd.select_proc, _thd.selend, TileVirtXY(_thd.selstart.x, _thd.selstart.y), TileVirtXY(_thd.selend.x, _thd.selend.y));
truelight@193: 
truelight@0: 	return false;
truelight@0: }
truelight@0: 
rubidium@8385: void SetObjectToPlaceWnd(CursorID icon, SpriteID pal, ViewportHighlightMode mode, Window *w)
truelight@0: {
peter1138@5919: 	SetObjectToPlace(icon, pal, mode, w->window_class, w->window_number);
truelight@0: }
truelight@0: 
truelight@0: #include "table/animcursors.h"
truelight@0: 
rubidium@8385: void SetObjectToPlace(CursorID icon, SpriteID pal, ViewportHighlightMode mode, WindowClass window_class, WindowNumber window_num)
truelight@0: {
smatz@9081: 	/* undo clicking on button and drag & drop */
smatz@9081: 	if (_thd.place_mode != VHM_NONE || _special_mouse_mode == WSM_DRAGDROP) {
rubidium@10566: 		Window *w = FindWindowById(_thd.window_class, _thd.window_number);
rubidium@10566: 		if (w != NULL) {
rubidium@10566: 			/* Call the abort function, but set the window class to something
rubidium@10566: 			 * that will never be used to avoid infinite loops. Setting it to
rubidium@10566: 			 * the 'next' window class must not be done because recursion into
rubidium@10566: 			 * this function might in some cases reset the newly set object to
rubidium@10566: 			 * place or not properly reset the original selection. */
rubidium@10566: 			_thd.window_class = WC_INVALID;
rubidium@10566: 			w->OnPlaceObjectAbort();
rubidium@10566: 		}
truelight@0: 	}
truelight@193: 
truelight@0: 	SetTileSelectSize(1, 1);
truelight@193: 
tron@1863: 	_thd.make_square_red = false;
truelight@0: 
rubidium@8385: 	if (mode == VHM_DRAG) { // VHM_DRAG is for dragdropping trains in the depot window
rubidium@8385: 		mode = VHM_NONE;
truelight@0: 		_special_mouse_mode = WSM_DRAGDROP;
truelight@0: 	} else {
truelight@0: 		_special_mouse_mode = WSM_NONE;
truelight@0: 	}
truelight@0: 
tron@1863: 	_thd.place_mode = mode;
tron@1863: 	_thd.window_class = window_class;
tron@1863: 	_thd.window_number = window_num;
truelight@0: 
dominik@1070: 	if (mode == VHM_SPECIAL) // special tools, like tunnels or docks start with presizing mode
truelight@0: 		VpStartPreSizing();
truelight@193: 
rubidium@10560: 	if ((int)icon < 0) {
Darkvater@4334: 		SetAnimatedMouseCursor(_animcursors[~icon]);
rubidium@10560: 	} else {
peter1138@5919: 		SetMouseCursor(icon, pal);
rubidium@10560: 	}
rubidium@10560: 
truelight@0: }
truelight@0: 
rubidium@6573: void ResetObjectToPlace()
tron@1093: {
rubidium@6144: 	SetObjectToPlace(SPR_CURSOR_MOUSE, PAL_NONE, VHM_NONE, WC_MAIN_WINDOW, 0);
truelight@0: }
rubidium@10771: 
rubidium@10771: 
rubidium@10771: void SaveViewportBeforeSaveGame()
rubidium@10771: {
rubidium@10771: 	const Window *w = FindWindowById(WC_MAIN_WINDOW, 0);
rubidium@10771: 
rubidium@10771: 	if (w != NULL) {
rubidium@10771: 		_saved_scrollpos_x = w->viewport->scrollpos_x;
rubidium@10771: 		_saved_scrollpos_y = w->viewport->scrollpos_y;
rubidium@10771: 		_saved_scrollpos_zoom = w->viewport->zoom;
rubidium@10771: 	}
rubidium@10771: }
rubidium@10771: 
rubidium@10771: void ResetViewportAfterLoadGame()
rubidium@10771: {
rubidium@10771: 	Window *w = FindWindowById(WC_MAIN_WINDOW, 0);
rubidium@10771: 
rubidium@10771: 	w->viewport->scrollpos_x = _saved_scrollpos_x;
rubidium@10771: 	w->viewport->scrollpos_y = _saved_scrollpos_y;
rubidium@10771: 	w->viewport->dest_scrollpos_x = _saved_scrollpos_x;
rubidium@10771: 	w->viewport->dest_scrollpos_y = _saved_scrollpos_y;
rubidium@10771: 
rubidium@10771: 	ViewPort *vp = w->viewport;
rubidium@10771: 	vp->zoom = min(_saved_scrollpos_zoom, ZOOM_LVL_MAX);
rubidium@10771: 	vp->virtual_width = ScaleByZoom(vp->width, vp->zoom);
rubidium@10771: 	vp->virtual_height = ScaleByZoom(vp->height, vp->zoom);
rubidium@10771: 
rubidium@10771: 	DoZoomInOutWindow(ZOOM_NONE, w); // update button status
rubidium@10771: 	MarkWholeScreenDirty();
rubidium@10771: }