1

#include "stdafx.h"

     2

#include "ttd.h"

     3

#include "debug.h"

     4

#include "spritecache.h"

     5

#include "strings.h"

     6

#include "table/sprites.h"

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#include "table/strings.h"

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#include "map.h"

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#include "viewport.h"

    10

#include "window.h"

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#include "vehicle.h"

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#include "station.h"

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#include "gfx.h"

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#include "town.h"

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#include "signs.h"

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    17

#define VIEWPORT_DRAW_MEM (65536 * 2)

    18

    19

static bool _added_tile_sprite;

    20

static bool _offset_ground_sprites;

    21

    22

typedef struct StringSpriteToDraw {

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	uint16 string;

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	uint16 color;

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	struct StringSpriteToDraw *next;

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	int32 x;

    27

	int32 y;

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	uint32 params[3];

    29

	uint16 width;

    30

} StringSpriteToDraw;

    31

    32

typedef struct TileSpriteToDraw {

    33

	uint32 image;

    34

	struct TileSpriteToDraw *next;

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	int32 x;

    36

	int32 y;

    37

	byte z;

    38

} TileSpriteToDraw;

    39

    40

typedef struct ChildScreenSpriteToDraw {

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	uint32 image;

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	int32 x;

    43

	int32 y;

    44

	struct ChildScreenSpriteToDraw *next;

    45

} ChildScreenSpriteToDraw;

    46

    47

typedef struct ParentSpriteToDraw {

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	uint32 image;

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	int32 left;

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	int32 top;

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	int32 right;

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	int32 bottom;

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	int32 tile_x;

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	int32 tile_y;

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	int32 tile_right;

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	int32 tile_bottom;

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	ChildScreenSpriteToDraw *child;

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	byte unk16;

    59

	byte tile_z;

    60

	byte tile_z_bottom;

    61

} ParentSpriteToDraw;

    62

    63

typedef struct ViewportDrawer {

    64

	DrawPixelInfo dpi;

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    66

	byte *spritelist_mem, *eof_spritelist_mem;

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    68

	StringSpriteToDraw **last_string, *first_string;

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	TileSpriteToDraw **last_tile, *first_tile;

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    71

	ChildScreenSpriteToDraw **last_child;

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    73

	ParentSpriteToDraw **parent_list;

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	ParentSpriteToDraw **eof_parent_list;

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    76

	byte combine_sprites;

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    78

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

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	bool ground_child;

    80

} ViewportDrawer;

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    82

static ViewportDrawer *_cur_vd;

    83

    84

TileHighlightData * const _thd_ptr = &_thd;

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static TileInfo *_cur_ti;

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    87

    88

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

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{

    90

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

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

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

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	return p;

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}

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    96

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

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

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{

    99

	ViewPort *vp;

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	Point pt;

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	byte z;

   102

	uint32 bit;

   103

   104

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

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		assert(vp!=endof(_viewports));

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		if (vp->width == 0)

   107

			break;

   108

	}

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	_active_viewports |= bit;

   110

   111

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

   112

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

   113

	vp->width = width;

   114

	vp->height = height;

   115

   116

	vp->zoom = zoom;

   117

   118

	vp->virtual_width = width << zoom;

   119

	vp->virtual_height = height << zoom;

   120

   121

	if (follow_flags & 0x80000000) {

   122

		Vehicle *veh;

   123

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

   124

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

   125

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

   126

	} else {

   127

		int x = TileX(follow_flags) * 16;

   128

		int y = TileY(follow_flags) * 16;

   129

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

   130

		z = GetSlopeZ(x,y);

   131

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

   132

	}

   133

   134

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

   135

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

   136

	w->viewport = vp;

   137

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

   138

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

   139

}

   140

   141

static Point _vp_move_offs;

   142

   143

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

   144

{

   145

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

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

   147

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

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				top + height > w->top &&

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

   150

   151

			if (left < w->left) {

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

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

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				return;

   155

			}

   156

   157

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

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

   159

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

   160

				return;

   161

			}

   162

   163

			if (top < w->top) {

   164

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

   165

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

   166

				return;

   167

			}

   168

   169

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

   170

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

   171

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

   172

				return;

   173

			}

   174

   175

			return;

   176

		}

   177

	}

   178

   179

	{

   180

		int xo = _vp_move_offs.x;

   181

		int yo = _vp_move_offs.y;

   182

   183

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

   184

			/* fully_outside */

   185

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

   186

			return;

   187

		}

   188

   189

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

   190

   191

		if (xo > 0) {

   192

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

   193

			left += xo;

   194

			width -= xo;

   195

		} else if (xo < 0) {

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

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			width += xo;

   198

		}

   199

   200

		if (yo > 0) {

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

   202

		} else if (yo < 0) {

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

   204

		}

   205

	}

   206

}

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   208

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

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{

   210

	ViewPort *vp = w->viewport;

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	int old_left = vp->virtual_left;

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	int old_top = vp->virtual_top;

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	int i;

   214

	int left, top, width, height;

   215

   216

	vp->virtual_left = x;

   217

	vp->virtual_top = y;

   218

   219

	old_left >>= vp->zoom;

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	old_top >>= vp->zoom;

   221

	x >>= vp->zoom;

   222

	y >>= vp->zoom;

   223

   224

	old_left -= x;

   225

	old_top -= y;

   226

   227

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

   228

		return;

   229

   230

	_vp_move_offs.x = old_left;

   231

	_vp_move_offs.y = old_top;

   232

   233

	left = vp->left;

   234

	top = vp->top;

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	width = vp->width;

   236

	height = vp->height;

   237

   238

	if (left < 0) {

   239

		width += left;

   240

		left = 0;

   241

	}

   242

   243

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

   244

		width -= i;

   245

   246

	if (width > 0) {

   247

		if (top < 0) {

   248

			height += top;

   249

			top = 0;

   250

		}

   251

   252

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

   253

			height -= i;

   254

		}

   255

   256

		if (height > 0)

   257

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

   258

	}

   259

}

   260

   261

   262

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

   263

{

   264

	ViewPort *vp = w->viewport;

   265

	if (vp != NULL &&

   266

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

   267

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

   268

		return vp;

   269

   270

	return NULL;

   271

}

   272

   273

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

   274

{

   275

	int z;

   276

	Point pt;

   277

	int a,b;

   278

   279

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

   280

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

   281

				Point pt = {-1, -1};

   282

				return pt;

   283

	}

   284

   285

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

   286

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

   287

   288

#if !defined(NEW_ROTATION)

   289

	a = y-x;

   290

	b = y+x;

   291

#else

   292

	a = x+y;

   293

	b = x-y;

   294

#endif

   295

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

   296

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

   297

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

   298

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

   299

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

   300

   301

	pt.x = a+z;

   302

	pt.y = b+z;

   303

   304

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

   305

		pt.x = pt.y = -1;

   306

	}

   307

   308

	return pt;

   309

}

   310

   311

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

   312

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

   313

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

   314

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

   315

{

   316

	Window *w;

   317

	ViewPort *vp;

   318

	Point pt;

   319

   320

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

   321

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

   322

				return TranslateXYToTileCoord(vp, zoom_x, zoom_y);

   323

   324

	pt.y = pt.x = -1;

   325

	return pt;

   326

}

   327

   328

Point GetTileBelowCursor(void)

   329

{

   330

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

   331

}

   332

   333

   334

Point GetTileZoomCenterWindow(bool in, Window * w)

   335

{

   336

	int x, y;

   337

	ViewPort * vp;

   338

   339

	vp = w->viewport;

   340

   341

	if (in)	{

   342

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

   343

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

   344

	}

   345

	else {

   346

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

   347

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

   348

	}

   349

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

   350

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

   351

}

   352

   353

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

   354

{

   355

	ViewportDrawer *vd = _cur_vd;

   356

	TileSpriteToDraw *ts;

   357

   358

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

   359

   360

	ts = (TileSpriteToDraw*)vd->spritelist_mem;

   361

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

   362

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

   363

		return;

   364

	}

   365

   366

	vd->spritelist_mem += sizeof(TileSpriteToDraw);

   367

   368

	ts->image = image;

   369

	ts->next = NULL;

   370

	ts->x = x;

   371

	ts->y = y;

   372

	ts->z = z;

   373

	*vd->last_tile = ts;

   374

	vd->last_tile = &ts->next;

   375

}

   376

   377

void DrawGroundSprite(uint32 image)

   378

{

   379

	if (_offset_ground_sprites) {

   380

		// offset ground sprite because of foundation?

   381

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

   382

	} else {

   383

		_added_tile_sprite = true;

   384

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

   385

	}

   386

}

   387

   388

   389

void OffsetGroundSprite(int x, int y)

   390

{

   391

	_cur_vd->offs_x = x;

   392

	_cur_vd->offs_y = y;

   393

	_offset_ground_sprites = true;

   394

}

   395

   396

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

   397

{

   398

	ViewportDrawer *vd = _cur_vd;

   399

	int t;

   400

	uint32 image_org = image;

   401

	const SpriteDimension *sd;

   402

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

   403

   404

	sd = GetSpriteDimension(image & 0x3FFF);

   405

   406

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

   407

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

   408

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

   409

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

   410

		return;

   411

   412

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

   413

}

   414

   415

   416

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

   417

{

   418

	ViewportDrawer *vd = _cur_vd;

   419

	ParentSpriteToDraw *ps;

   420

	const SpriteDimension *sd;

   421

	Point pt;

   422

   423

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

   424

   425

	if (vd->combine_sprites == 2) {

   426

		AddCombinedSprite(image, x, y, z);

   427

		return;

   428

	}

   429

   430

	vd->last_child = NULL;

   431

   432

	ps = (ParentSpriteToDraw*)vd->spritelist_mem;

   433

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

   434

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

   435

		return;

   436

	}

   437

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

   438

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

   439

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

   440

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

   441

		//  parent_list somewhere below to a higher number.

   442

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

   443

		//  spots on the screen ;)

   444

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

   445

		return;

   446

	}

   447

   448

	vd->spritelist_mem += sizeof(ParentSpriteToDraw);

   449

   450

	ps->image = image;

   451

	ps->tile_x = x;

   452

	ps->tile_right = x + w - 1;

   453

   454

	ps->tile_y = y;

   455

	ps->tile_bottom = y + h - 1;

   456

   457

	ps->tile_z = z;

   458

	ps->tile_z_bottom = z + dz - 1;

   459

   460

	pt = RemapCoords(x, y, z);

   461

   462

	sd = GetSpriteDimension(image & 0x3FFF);

   463

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

   464

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

   465

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

   466

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

   467

		return;

   468

	}

   469

   470

	ps->unk16 = 0;

   471

	ps->child = NULL;

   472

	vd->last_child = &ps->child;

   473

   474

	*vd->parent_list++ = ps;

   475

   476

	if (vd->combine_sprites == 1) {

   477

		vd->combine_sprites = 2;

   478

	}

   479

}

   480

   481

void StartSpriteCombine(void)

   482

{

   483

	_cur_vd->combine_sprites = 1;

   484

}

   485

   486

void EndSpriteCombine(void)

   487

{

   488

	_cur_vd->combine_sprites = 0;

   489

}

   490

   491

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

   492

{

   493

	ViewportDrawer *vd = _cur_vd;

   494

	ChildScreenSpriteToDraw *cs;

   495

   496

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

   497

   498

	cs = (ChildScreenSpriteToDraw*) vd->spritelist_mem;

   499

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

   500

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

   501

		return;

   502

	}

   503

   504

	if (vd->last_child == NULL)

   505

		return;

   506

   507

	vd->spritelist_mem += sizeof(ChildScreenSpriteToDraw);

   508

   509

	*vd->last_child = cs;

   510

	vd->last_child = &cs->next;

   511

   512

	cs->image = image;

   513

	cs->x = x;

   514

	cs->y = y;

   515

	cs->next = NULL;

   516

}

   517