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#include "stdafx.h"

     2

#include "openttd.h"

     3

#include "debug.h"

     4

#include "spritecache.h"

     5

#include "strings.h"

     6

#include "table/sprites.h"

     7

#include "table/strings.h"

     8

#include "map.h"

     9

#include "viewport.h"

    10

#include "window.h"

    11

#include "vehicle.h"

    12

#include "station.h"

    13

#include "gfx.h"

    14

#include "town.h"

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#include "signs.h"

    16

#include "waypoint.h"

    17

    18

#define VIEWPORT_DRAW_MEM (65536 * 2)

    19

    20

static bool _added_tile_sprite;

    21

static bool _offset_ground_sprites;

    22

    23

typedef struct StringSpriteToDraw {

    24

	uint16 string;

    25

	uint16 color;

    26

	struct StringSpriteToDraw *next;

    27

	int32 x;

    28

	int32 y;

    29

	uint32 params[3];

    30

	uint16 width;

    31

} StringSpriteToDraw;

    32

    33

typedef struct TileSpriteToDraw {

    34

	uint32 image;

    35

	struct TileSpriteToDraw *next;

    36

	int32 x;

    37

	int32 y;

    38

	byte z;

    39

} TileSpriteToDraw;

    40

    41

typedef struct ChildScreenSpriteToDraw {

    42

	uint32 image;

    43

	int32 x;

    44

	int32 y;

    45

	struct ChildScreenSpriteToDraw *next;

    46

} ChildScreenSpriteToDraw;

    47

    48

typedef struct ParentSpriteToDraw {

    49

	uint32 image;

    50

	int32 left;

    51

	int32 top;

    52

	int32 right;

    53

	int32 bottom;

    54

	int32 tile_x;

    55

	int32 tile_y;

    56

	int32 tile_right;

    57

	int32 tile_bottom;

    58

	ChildScreenSpriteToDraw *child;

    59

	byte unk16;

    60

	byte tile_z;

    61

	byte tile_z_bottom;

    62

} ParentSpriteToDraw;

    63

    68

typedef struct ViewportDrawer {

    69

	DrawPixelInfo dpi;

    70

    71

	byte *spritelist_mem, *eof_spritelist_mem;

    72

    73

	StringSpriteToDraw **last_string, *first_string;

    74

	TileSpriteToDraw **last_tile, *first_tile;

    75

    76

	ChildScreenSpriteToDraw **last_child;

    77

    78

	ParentSpriteToDraw **parent_list;

    79

	ParentSpriteToDraw **eof_parent_list;

    80

    81

	byte combine_sprites;

    82

    83

	int offs_x, offs_y; // used when drawing ground sprites relative

    84

	bool ground_child;

    85

} ViewportDrawer;

    86

    87

static ViewportDrawer *_cur_vd;

    88

    89

TileHighlightData _thd;

    90

static TileInfo *_cur_ti;

    91

    92

    93

Point MapXYZToViewport(ViewPort *vp, uint x, uint y, uint z)

    94

{

    95

	Point p = RemapCoords(x, y, z);

    96

	p.x -= (vp->virtual_width>>1);

    97

	p.y -= (vp->virtual_height>>1);

    98

	return p;

    99

}

   100

   101

void AssignWindowViewport(Window *w, int x, int y,

   102

	int width, int height, uint32 follow_flags, byte zoom)

   103

{

   104

	ViewPort *vp;

   105

	Point pt;

   106

	byte z;

   107

	uint32 bit;

   108

   109

	for(vp=_viewports,bit=1; ; vp++, bit<<=1) {

   110

		assert(vp!=endof(_viewports));

   111

		if (vp->width == 0)

   112

			break;

   113

	}

   114

	_active_viewports |= bit;

   115

   116

	vp->left = x + w->left;

   117

	vp->top = y + w->top;

   118

	vp->width = width;

   119

	vp->height = height;

   120

   121

	vp->zoom = zoom;

   122

   123

	vp->virtual_width = width << zoom;

   124

	vp->virtual_height = height << zoom;

   125

   126

	if (follow_flags & 0x80000000) {

   127

		Vehicle *veh;

   128

		WP(w,vp_d).follow_vehicle = (VehicleID)(follow_flags & 0xFFFF);

   129

		veh = GetVehicle(WP(w,vp_d).follow_vehicle);

   130

		pt = MapXYZToViewport(vp, veh->x_pos, veh->y_pos, veh->z_pos);

   131

	} else {

   132

		int x = TileX(follow_flags) * 16;

   133

		int y = TileY(follow_flags) * 16;

   134

		WP(w,vp_d).follow_vehicle = INVALID_VEHICLE;

   135

		z = GetSlopeZ(x,y);

   136

		pt = MapXYZToViewport(vp, x,y, z);

   137

	}

   138

   139

	WP(w,vp_d).scrollpos_x = pt.x;

   140

	WP(w,vp_d).scrollpos_y = pt.y;

   141

	w->viewport = vp;

   142

	vp->virtual_left = 0;//pt.x;

   143

	vp->virtual_top = 0;//pt.y;

   144

}

   145

   146

static Point _vp_move_offs;

   147

   148

static void DoSetViewportPosition(Window *w, int left, int top, int width, int height)

   149

{

   150

	for (; w < _last_window; w++) {

   151

		if (left + width > w->left &&

   152

				w->left+w->width > left &&

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				top + height > w->top &&

   154

				w->top+w->height > top) {

   155

   156

			if (left < w->left) {

   157

				DoSetViewportPosition(w, left, top, w->left - left, height);

   158

				DoSetViewportPosition(w, left + (w->left - left), top, width - (w->left - left), height);

   159

				return;

   160

			}

   161

   162

			if (left + width > w->left + w->width) {

   163

				DoSetViewportPosition(w, left, top, (w->left + w->width - left), height);

   164

				DoSetViewportPosition(w, left + (w->left + w->width - left), top, width - (w->left + w->width - left) , height);

   165

				return;

   166

			}

   167

   168

			if (top < w->top) {

   169

				DoSetViewportPosition(w, left, top, width, (w->top - top));

   170

				DoSetViewportPosition(w, left, top + (w->top - top), width, height - (w->top - top));

   171

				return;

   172

			}

   173

   174

			if (top + height > w->top + w->height) {

   175

				DoSetViewportPosition(w, left, top, width, (w->top + w->height - top));

   176

				DoSetViewportPosition(w, left, top + (w->top + w->height - top), width , height - (w->top + w->height - top));

   177

				return;

   178

			}

   179

   180

			return;

   181

		}

   182

	}

   183

   184

	{

   185

		int xo = _vp_move_offs.x;

   186

		int yo = _vp_move_offs.y;

   187

   188

		if (abs(xo) >= width || abs(yo) >= height) {

   189

			/* fully_outside */

   190

			RedrawScreenRect(left, top, left+width, top+height);

   191

			return;

   192

		}

   193

   194

		GfxScroll(left, top, width, height, xo, yo);

   195

   196

		if (xo > 0) {

   197

			RedrawScreenRect(left, top, xo + left, top + height);

   198

			left += xo;

   199

			width -= xo;

   200

		} else if (xo < 0) {

   201

			RedrawScreenRect(left+width+xo, top, left+width, top + height);

   202

			width += xo;

   203

		}

   204

   205

		if (yo > 0) {

   206

			RedrawScreenRect(left, top, width+left, top + yo);

   207

		} else if (yo < 0) {

   208

			RedrawScreenRect(left, top + height + yo, width+left, top + height);

   209

		}

   210

	}

   211

}

   212

   213

void SetViewportPosition(Window *w, int x, int y)

   214

{

   215

	ViewPort *vp = w->viewport;

   216

	int old_left = vp->virtual_left;

   217

	int old_top = vp->virtual_top;

   218

	int i;

   219

	int left, top, width, height;

   220

   221

	vp->virtual_left = x;

   222

	vp->virtual_top = y;

   223

   224

	old_left >>= vp->zoom;

   225

	old_top >>= vp->zoom;

   226

	x >>= vp->zoom;

   227

	y >>= vp->zoom;

   228

   229

	old_left -= x;

   230

	old_top -= y;

   231

   232

	if (old_top == 0 && old_left == 0)

   233

		return;

   234

   235

	_vp_move_offs.x = old_left;

   236

	_vp_move_offs.y = old_top;

   237

   238

	left = vp->left;

   239

	top = vp->top;

   240

	width = vp->width;

   241

	height = vp->height;

   242

   243

	if (left < 0) {

   244

		width += left;

   245

		left = 0;

   246

	}

   247

   248

	if ( (i=(left + width - _screen.width)) >= 0)

   249

		width -= i;

   250

   251

	if (width > 0) {

   252

		if (top < 0) {

   253

			height += top;

   254

			top = 0;

   255

		}

   256

   257

		if ( (i=(top + height - _screen.height)) >= 0) {

   258

			height -= i;

   259

		}

   260

   261

		if (height > 0)

   262

			DoSetViewportPosition(w+1, left, top, width, height);

   263

	}

   264

}

   265

   266

   267

ViewPort *IsPtInWindowViewport(Window *w, int x, int y)

   268

{

   269

	ViewPort *vp = w->viewport;

   270

	if (vp != NULL &&

   271

	    IS_INT_INSIDE(x, vp->left, vp->left + vp->width) &&

   272

			IS_INT_INSIDE(y, vp->top, vp->top + vp->height))

   273

		return vp;

   274

   275

	return NULL;

   276

}

   277

   278

static Point TranslateXYToTileCoord(ViewPort *vp, int x, int y)

   279

{

   280

	int z;

   281

	Point pt;

   282

	int a,b;

   283

   284

	if ( (uint)(x -= vp->left) >= (uint)vp->width ||

   285

				(uint)(y -= vp->top) >= (uint)vp->height) {

   286

				Point pt = {-1, -1};

   287

				return pt;

   288

	}

   289

   290

	x = ((x << vp->zoom) + vp->virtual_left) >> 2;

   291

	y = ((y << vp->zoom) + vp->virtual_top) >> 1;

   292

   293

#if !defined(NEW_ROTATION)

   294

	a = y-x;

   295

	b = y+x;

   296

#else

   297

	a = x+y;

   298

	b = x-y;

   299

#endif

   300

	z = GetSlopeZ(a, b) >> 1;

   301

	z = GetSlopeZ(a+z, b+z) >> 1;

   302

	z = GetSlopeZ(a+z, b+z) >> 1;

   303

	z = GetSlopeZ(a+z, b+z) >> 1;

   304

	z = GetSlopeZ(a+z, b+z) >> 1;

   305

   306

	pt.x = a+z;

   307

	pt.y = b+z;

   308

   309

	if ((uint)pt.x >= MapMaxX() * 16 || (uint)pt.y >= MapMaxY() * 16) {

   310

		pt.x = pt.y = -1;

   311

	}

   312

   313

	return pt;

   314

}

   315

   316

/* When used for zooming, check area below current coordinates (x,y)

   317

 * and return the tile of the zoomed out/in position (zoom_x, zoom_y)

   318

 * when you just want the tile, make x = zoom_x and y = zoom_y */

   319

static Point GetTileFromScreenXY(int x, int y, int zoom_x, int zoom_y)

   320

{

   321

	Window *w;

   322

	ViewPort *vp;

   323

	Point pt;

   324

   325

	if ( (w = FindWindowFromPt(x, y)) != NULL &&

   326

			 (vp = IsPtInWindowViewport(w, x, y)) != NULL)

   327

				return TranslateXYToTileCoord(vp, zoom_x, zoom_y);

   328

   329

	pt.y = pt.x = -1;

   330

	return pt;

   331

}

   332

   333

Point GetTileBelowCursor(void)

   334

{

   335

	return GetTileFromScreenXY(_cursor.pos.x, _cursor.pos.y, _cursor.pos.x, _cursor.pos.y);

   336

}

   337

   338

   339

Point GetTileZoomCenterWindow(bool in, Window * w)

   340

{

   341

	int x, y;

   342

	ViewPort * vp;

   343

   344

	vp = w->viewport;

   345

   346

	if (in) {

   347

		x = ( (_cursor.pos.x - vp->left ) >> 1) + (vp->width >> 2);

   348

		y = ( (_cursor.pos.y - vp->top ) >> 1) + (vp->height >> 2);

   349

	}

   350

	else {

   351

		x = vp->width - (_cursor.pos.x - vp->left);

   352

		y = vp->height - (_cursor.pos.y - vp->top);

   353

	}

   354

	/* Get the tile below the cursor and center on the zoomed-out center */

   355

	return GetTileFromScreenXY(_cursor.pos.x, _cursor.pos.y, x + vp->left, y + vp->top);

   356

}

   357

   358

void DrawGroundSpriteAt(uint32 image, int32 x, int32 y, byte z)

   359

{

   360

	ViewportDrawer *vd = _cur_vd;

   361

	TileSpriteToDraw *ts;

   362

   363

	assert( (image & 0x3fff) < NUM_SPRITES);

   364

   365

	ts = (TileSpriteToDraw*)vd->spritelist_mem;

   366

	if ((byte*)ts >= vd->eof_spritelist_mem) {

   367

		DEBUG(misc, 0) ("Out of sprite mem");

   368

		return;

   369

	}

   370

   371

	vd->spritelist_mem += sizeof(TileSpriteToDraw);

   372

   373

	ts->image = image;

   374

	ts->next = NULL;

   375

	ts->x = x;

   376

	ts->y = y;

   377

	ts->z = z;

   378

	*vd->last_tile = ts;

   379

	vd->last_tile = &ts->next;

   380

}

   381

   382

void DrawGroundSprite(uint32 image)

   383

{

   384

	if (_offset_ground_sprites) {

   385

		// offset ground sprite because of foundation?

   386

		AddChildSpriteScreen(image, _cur_vd->offs_x, _cur_vd->offs_y);

   387

	} else {

   388

		_added_tile_sprite = true;

   389

		DrawGroundSpriteAt(image, _cur_ti->x, _cur_ti->y, _cur_ti->z);

   390

	}

   391

}

   392

   393

   394

void OffsetGroundSprite(int x, int y)

   395

{

   396

	_cur_vd->offs_x = x;

   397

	_cur_vd->offs_y = y;

   398

	_offset_ground_sprites = true;

   399

}

   400

   401

static void AddCombinedSprite(uint32 image, int x, int y, byte z)

   402

{

   403

	ViewportDrawer *vd = _cur_vd;

   404

	int t;

   405

	uint32 image_org = image;

   406

	const SpriteDimension *sd;

   407

	Point pt = RemapCoords(x, y, z);

   408

   409

	sd = GetSpriteDimension(image & 0x3FFF);

   410

   411

	if ((t = pt.x + sd->xoffs) >= vd->dpi.left + vd->dpi.width ||

   412

			(t + sd->xsize) <= vd->dpi.left ||

   413

			(t = pt.y + sd->yoffs) >= vd->dpi.top + vd->dpi.height ||

   414

			(t + sd->ysize) <= vd->dpi.top)

   415

		return;

   416

   417

	AddChildSpriteScreen(image_org, pt.x - vd->parent_list[-1]->left, pt.y - vd->parent_list[-1]->top);

   418

}

   419

   420

   421

void AddSortableSpriteToDraw(uint32 image, int x, int y, int w, int h, byte dz, byte z)

   422

{

   423

	ViewportDrawer *vd = _cur_vd;

   424

	ParentSpriteToDraw *ps;

   425

	const SpriteDimension *sd;

   426

	Point pt;

   427

   428

	assert( (image & 0x3fff) < NUM_SPRITES);

   429

   430

	if (vd->combine_sprites == 2) {

   431

		AddCombinedSprite(image, x, y, z);

   432

		return;

   433

	}

   434

   435

	vd->last_child = NULL;

   436

   437

	ps = (ParentSpriteToDraw*)vd->spritelist_mem;

   438

	if ((byte*)ps >= vd->eof_spritelist_mem) {

   439

		DEBUG(misc, 0) ("Out of sprite mem");

   440

		return;

   441

	}

   442

	if (vd->parent_list >= vd->eof_parent_list) {

   443

		// This can happen rarely, mostly when you zoom out completely

   444

		//  and have a lot of stuff that moves (and is added to the

   445

		//  sort-list, this function). To solve it, increase

   446

		//  parent_list somewhere below to a higher number.

   447

		// This can not really hurt you, it just gives some black

   448

		//  spots on the screen ;)

   449

		DEBUG(misc, 0) ("Out of sprite mem (parent_list)");

   450

		return;

   451

	}

   452

   453

	vd->spritelist_mem += sizeof(ParentSpriteToDraw);

   454

   455

	ps->image = image;

   456

	ps->tile_x = x;

   457

	ps->tile_right = x + w - 1;

   458

   459

	ps->tile_y = y;

   460

	ps->tile_bottom = y + h - 1;

   461

   462

	ps->tile_z = z;

   463

	ps->tile_z_bottom = z + dz - 1;

   464

   465

	pt = RemapCoords(x, y, z);

   466

   467

	sd = GetSpriteDimension(image & 0x3FFF);

   468

	if ((ps->left = (pt.x += sd->xoffs)) >= vd->dpi.left + vd->dpi.width ||

   469

			(ps->right = (pt.x + sd->xsize)) <= vd->dpi.left ||

   470

			(ps->top = (pt.y += sd->yoffs)) >= vd->dpi.top + vd->dpi.height ||

   471

			(ps->bottom = (pt.y + sd->ysize)) <= vd->dpi.top) {

   472

		return;

   473

	}

   474

   475

	ps->unk16 = 0;

   476

	ps->child = NULL;

   477

	vd->last_child = &ps->child;

   478

   479

	*vd->parent_list++ = ps;

   480

   481

	if (vd->combine_sprites == 1) {

   482

		vd->combine_sprites = 2;

   483

	}

   484

}

   485

   486

void StartSpriteCombine(void)

   487

{

   488

	_cur_vd->combine_sprites = 1;

   489

}

   490

   491

void EndSpriteCombine(void)

   492

{

   493

	_cur_vd->combine_sprites = 0;

   494

}

   495

   496

void AddChildSpriteScreen(uint32 image, int x, int y)

   497

{

   498

	ViewportDrawer *vd = _cur_vd;

   499

	ChildScreenSpriteToDraw *cs;

   500

   501

	assert( (image & 0x3fff) < NUM_SPRITES);

   502

   503

	cs = (ChildScreenSpriteToDraw*) vd->spritelist_mem;

   504

	if ((byte*)cs >= vd->eof_spritelist_mem) {

   505

		DEBUG(misc, 0) ("Out of sprite mem");

   506

		return;

   507

	}

   508

   509

	if (vd->last_child == NULL)

   510

		return;

   511

   512

	vd->spritelist_mem += sizeof(ChildScreenSpriteToDraw);

   513

   514

	*vd->last_child = cs;

   515

	vd->last_child = &cs->next;

   516