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"

     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"

    15

#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

    64

typedef struct ViewportDrawer {

    65

	DrawPixelInfo dpi;

    66

    67

	byte *spritelist_mem, *eof_spritelist_mem;

    68

    69

	StringSpriteToDraw **last_string, *first_string;

    70

	TileSpriteToDraw **last_tile, *first_tile;

    71

    72

	ChildScreenSpriteToDraw **last_child;

    73

    74

	ParentSpriteToDraw **parent_list;

    75

	ParentSpriteToDraw **eof_parent_list;

    76

    77

	byte combine_sprites;

    78

    79

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

    80

	bool ground_child;

    81

} ViewportDrawer;

    82

    83

static ViewportDrawer *_cur_vd;

    84

    85

TileHighlightData _thd;

    86

static TileInfo *_cur_ti;

    87

    88

    89

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

    90

{

    91

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

    92

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

    93

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

    94

	return p;

    95

}

    96

    97

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

    98

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

    99

{

   100

	ViewPort *vp;

   101

	Point pt;

   102

	byte z;

   103

	uint32 bit;

   104

   105

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

   106

		assert(vp!=endof(_viewports));

   107

		if (vp->width == 0)

   108

			break;

   109

	}

   110

	_active_viewports |= bit;

   111

   112

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

   113

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

   114

	vp->width = width;

   115

	vp->height = height;

   116

   117

	vp->zoom = zoom;

   118

   119

	vp->virtual_width = width << zoom;

   120

	vp->virtual_height = height << zoom;

   121

   122

	if (follow_flags & 0x80000000) {

   123

		Vehicle *veh;

   124

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

   125

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

   126

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

   127

	} else {

   128

		int x = TileX(follow_flags) * 16;

   129

		int y = TileY(follow_flags) * 16;

   131

		z = GetSlopeZ(x,y);

   132

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

   133

	}

   134

   135

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

   136

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

   137

	w->viewport = vp;

   138

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

   139

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

   140

}

   141

   142

static Point _vp_move_offs;

   143

   144

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

   145

{

   146

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

   147

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

   148

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

   149

				top + height > w->top &&

   150

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

   151

   152

			if (left < w->left) {

   153

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

   154

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

   155

				return;

   156

			}

   157

   158

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

   159

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

   160

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

   161

				return;

   162

			}

   163

   164

			if (top < w->top) {

   165

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

   166

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

   167

				return;

   168

			}

   169

   170

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

   171

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

   172

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

   173

				return;

   174

			}

   175

   176

			return;

   177

		}

   178

	}

   179

   180

	{

   181

		int xo = _vp_move_offs.x;

   182

		int yo = _vp_move_offs.y;

   183

   184

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

   185

			/* fully_outside */

   186

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

   187

			return;

   188

		}

   189

   190

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

   191

   192

		if (xo > 0) {

   193

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

   194

			left += xo;

   195

			width -= xo;

   196

		} else if (xo < 0) {

   197

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

   198

			width += xo;

   199

		}

   200

   201

		if (yo > 0) {

   202

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

   203

		} else if (yo < 0) {

   204

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

   205

		}

   206

	}

   207

}

   208

   209

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

   210

{

   211

	ViewPort *vp = w->viewport;

   212

	int old_left = vp->virtual_left;

   213

	int old_top = vp->virtual_top;

   214

	int i;

   215

	int left, top, width, height;

   216

   217

	vp->virtual_left = x;

   218

	vp->virtual_top = y;

   219

   220

	old_left >>= vp->zoom;

   221

	old_top >>= vp->zoom;

   222

	x >>= vp->zoom;

   223

	y >>= vp->zoom;

   224

   225

	old_left -= x;

   226

	old_top -= y;

   227

   228

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

   229

		return;

   230

   231

	_vp_move_offs.x = old_left;

   232

	_vp_move_offs.y = old_top;

   233

   234

	left = vp->left;

   235

	top = vp->top;

   236

	width = vp->width;

   237

	height = vp->height;

   238

   239

	if (left < 0) {

   240

		width += left;

   241

		left = 0;

   242

	}

   243

   244

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

   245

		width -= i;

   246

   247

	if (width > 0) {

   248

		if (top < 0) {

   249

			height += top;

   250

			top = 0;

   251

		}

   252

   253

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

   254

			height -= i;

   255

		}

   256

   257

		if (height > 0)

   258

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

   259

	}

   260

}

   261

   262

   263

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

   264

{

   265

	ViewPort *vp = w->viewport;

   266

	if (vp != NULL &&

   267

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

   268

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

   269

		return vp;

   270

   271

	return NULL;

   272

}

   273

   274

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

   275

{

   276

	int z;

   277

	Point pt;

   278

	int a,b;

   279

   280

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

   281

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

   282

				Point pt = {-1, -1};

   283

				return pt;

   284

	}

   285

   286

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

   287

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

   288

   289

#if !defined(NEW_ROTATION)

   290

	a = y-x;

   291

	b = y+x;

   292

#else

   293

	a = x+y;

   294

	b = x-y;

   295

#endif

   296

	z = GetSlopeZ(a, b) >> 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

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

   301

   302

	pt.x = a+z;

   303

	pt.y = b+z;

   304

   305

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

   306

		pt.x = pt.y = -1;

   307

	}

   308

   309

	return pt;

   310

}

   311

   312

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

   313

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

   314

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

   315

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

   316

{

   317

	Window *w;

   318

	ViewPort *vp;

   319

	Point pt;

   320

   321

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

   322

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

   323

				return TranslateXYToTileCoord(vp, zoom_x, zoom_y);

   324

   325

	pt.y = pt.x = -1;

   326

	return pt;

   327

}

   328

   329

Point GetTileBelowCursor(void)

   330

{

   331

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

   332

}

   333

   334

   335

Point GetTileZoomCenterWindow(bool in, Window * w)

   336

{

   337

	int x, y;

   338

	ViewPort * vp;

   339

   340

	vp = w->viewport;

   341

   342

	if (in)	{

   343

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

   344

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

   345

	}

   346

	else {

   347

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

   348

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

   349

	}

   350

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

   351

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

   352

}

   353

   354

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

   355

{

   356

	ViewportDrawer *vd = _cur_vd;

   357

	TileSpriteToDraw *ts;

   358

   359

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

   360

   361

	ts = (TileSpriteToDraw*)vd->spritelist_mem;

   362

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

   363

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

   364

		return;

   365

	}

   366

   367

	vd->spritelist_mem += sizeof(TileSpriteToDraw);

   368

   369

	ts->image = image;

   370

	ts->next = NULL;

   371

	ts->x = x;

   372

	ts->y = y;

   373

	ts->z = z;

   374

	*vd->last_tile = ts;

   375

	vd->last_tile = &ts->next;

   376

}

   377

   378

void DrawGroundSprite(uint32 image)

   379

{

   380

	if (_offset_ground_sprites) {

   381

		// offset ground sprite because of foundation?

   382

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

   383

	} else {

   384

		_added_tile_sprite = true;

   385

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

   386

	}

   387

}

   388

   389

   390

void OffsetGroundSprite(int x, int y)

   391

{

   392

	_cur_vd->offs_x = x;

   393

	_cur_vd->offs_y = y;

   394

	_offset_ground_sprites = true;

   395

}

   396

   397

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

   398

{

   399

	ViewportDrawer *vd = _cur_vd;

   400

	int t;

   401

	uint32 image_org = image;

   402

	const SpriteDimension *sd;

   403

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

   404

   405

	sd = GetSpriteDimension(image & 0x3FFF);

   406

   407

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

   408

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

   409

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

   410

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

   411

		return;

   412

   413

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

   414

}

   415

   416

   417

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

   418

{

   419

	ViewportDrawer *vd = _cur_vd;

   420

	ParentSpriteToDraw *ps;

   421

	const SpriteDimension *sd;

   422

	Point pt;

   423

   424

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

   425

   426

	if (vd->combine_sprites == 2) {

   427

		AddCombinedSprite(image, x, y, z);

   428

		return;

   429

	}

   430

   431

	vd->last_child = NULL;

   432

   433

	ps = (ParentSpriteToDraw*)vd->spritelist_mem;

   434

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

   435

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

   436

		return;

   437

	}

   438

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

   439

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

   440

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

   441

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

   442

		//  parent_list somewhere below to a higher number.

   443

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

   444

		//  spots on the screen ;)

   445

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

   446

		return;

   447

	}

   448

   449

	vd->spritelist_mem += sizeof(ParentSpriteToDraw);

   450

   451

	ps->image = image;

   452

	ps->tile_x = x;

   453

	ps->tile_right = x + w - 1;

   454

   455

	ps->tile_y = y;

   456

	ps->tile_bottom = y + h - 1;

   457

   458

	ps->tile_z = z;

   459

	ps->tile_z_bottom = z + dz - 1;

   460

   461

	pt = RemapCoords(x, y, z);

   462

   463

	sd = GetSpriteDimension(image & 0x3FFF);

   464

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

   465

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

   466

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

   467

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

   468

		return;

   469

	}

   470

   471

	ps->unk16 = 0;

   472

	ps->child = NULL;

   473

	vd->last_child = &ps->child;

   474

   475

	*vd->parent_list++ = ps;

   476

   477

	if (vd->combine_sprites == 1) {

   478

		vd->combine_sprites = 2;

   479

	}

   480

}

   481

   482

void StartSpriteCombine(void)

   483

{

   484

	_cur_vd->combine_sprites = 1;

   485

}

   486

   487

void EndSpriteCombine(void)

   488

{

   489

	_cur_vd->combine_sprites = 0;

   490

}

   491

   492

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

   493

{

   494

	ViewportDrawer *vd = _cur_vd;

   495

	ChildScreenSpriteToDraw *cs;

   496

   497

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

   498

   499

	cs = (ChildScreenSpriteToDraw*) vd->spritelist_mem;

   500

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

   501

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

   502

		return;

   503

	}

   504

   505

	if (vd->last_child == NULL)

   506

		return;

   507

   508

	vd->spritelist_mem += sizeof(ChildScreenSpriteToDraw);

   509

   510

	*vd->last_child = cs;

   511

	vd->last_child = &cs->next;

   512

   513

	cs->image = image;

   514

	cs->x = x;

   515

	cs->y = y;

   516

	cs->next = NULL;

   517

}