summaryrefslogtreecommitdiff
path: root/src/newgrf_industrytiles.cpp
blob: e9c99f6cd53e1f70ea003ef8cea15cebe0dbc5bf (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */

/** @file newgrf_industrytiles.cpp NewGRF handling of industry tiles. */

#include "stdafx.h"
#include "debug.h"
#include "landscape.h"
#include "newgrf_industrytiles.h"
#include "newgrf_sound.h"
#include "industry.h"
#include "town.h"
#include "command_func.h"
#include "water.h"
#include "newgrf_animation_base.h"

#include "table/strings.h"

#include "safeguards.h"

/**
 * Based on newhouses equivalent, but adapted for newindustries
 * @param parameter from callback.  It's in fact a pair of coordinates
 * @param tile TileIndex from which the callback was initiated
 * @param index of the industry been queried for
 * @param signed_offsets Are the x and y offset encoded in parameter signed?
 * @param grf_version8 True, if we are dealing with a new NewGRF which uses GRF version >= 8.
 * @return a construction of bits obeying the newgrf format
 */
uint32 GetNearbyIndustryTileInformation(byte parameter, TileIndex tile, IndustryID index, bool signed_offsets, bool grf_version8)
{
	if (parameter != 0) tile = GetNearbyTile(parameter, tile, signed_offsets); // only perform if it is required
	bool is_same_industry = (IsTileType(tile, MP_INDUSTRY) && GetIndustryIndex(tile) == index);

	return GetNearbyTileInformation(tile, grf_version8) | (is_same_industry ? 1 : 0) << 8;
}

/**
 * This is the position of the tile relative to the northernmost tile of the industry.
 * Format: 00yxYYXX
 * Variable  Content
 * x         the x offset from the northernmost tile
 * XX        same, but stored in a byte instead of a nibble
 * y         the y offset from the northernmost tile
 * YY        same, but stored in a byte instead of a nibble
 * @param tile TileIndex of the tile to evaluate
 * @param ind_tile northernmost tile of the industry
 */
uint32 GetRelativePosition(TileIndex tile, TileIndex ind_tile)
{
	byte x = TileX(tile) - TileX(ind_tile);
	byte y = TileY(tile) - TileY(ind_tile);

	return ((y & 0xF) << 20) | ((x & 0xF) << 16) | (y << 8) | x;
}

/* virtual */ uint32 IndustryTileScopeResolver::GetVariable(byte variable, uint32 parameter, bool *available) const
{
	switch (variable) {
		/* Construction state of the tile: a value between 0 and 3 */
		case 0x40: return (IsTileType(this->tile, MP_INDUSTRY)) ? GetIndustryConstructionStage(this->tile) : 0;

		/* Terrain type */
		case 0x41: return GetTerrainType(this->tile);

		/* Current town zone of the tile in the nearest town */
		case 0x42: return GetTownRadiusGroup(ClosestTownFromTile(this->tile, UINT_MAX), this->tile);

		/* Relative position */
		case 0x43: return GetRelativePosition(this->tile, this->industry->location.tile);

		/* Animation frame. Like house variable 46 but can contain anything 0..FF. */
		case 0x44: return IsTileType(this->tile, MP_INDUSTRY) ? GetAnimationFrame(this->tile) : 0;

		/* Land info of nearby tiles */
		case 0x60: return GetNearbyIndustryTileInformation(parameter, this->tile,
				this->industry == nullptr ? (IndustryID)INVALID_INDUSTRY : this->industry->index, true, this->ro.grffile->grf_version >= 8);

		/* Animation stage of nearby tiles */
		case 0x61: {
			TileIndex tile = GetNearbyTile(parameter, this->tile);
			if (IsTileType(tile, MP_INDUSTRY) && Industry::GetByTile(tile) == this->industry) {
				return GetAnimationFrame(tile);
			}
			return UINT_MAX;
		}

		/* Get industry tile ID at offset */
		case 0x62: return GetIndustryIDAtOffset(GetNearbyTile(parameter, this->tile), this->industry, this->ro.grffile->grfid);
	}

	DEBUG(grf, 1, "Unhandled industry tile variable 0x%X", variable);

	*available = false;
	return UINT_MAX;
}

/* virtual */ uint32 IndustryTileScopeResolver::GetRandomBits() const
{
	assert(this->industry != nullptr && IsValidTile(this->tile));
	assert(this->industry->index == INVALID_INDUSTRY || IsTileType(this->tile, MP_INDUSTRY));

	return (this->industry->index != INVALID_INDUSTRY) ? GetIndustryRandomBits(this->tile) : 0;
}

/* virtual */ uint32 IndustryTileScopeResolver::GetTriggers() const
{
	assert(this->industry != nullptr && IsValidTile(this->tile));
	assert(this->industry->index == INVALID_INDUSTRY || IsTileType(this->tile, MP_INDUSTRY));
	if (this->industry->index == INVALID_INDUSTRY) return 0;
	return GetIndustryTriggers(this->tile);
}

/**
 * Get the associated NewGRF file from the industry graphics.
 * @param gfx Graphics to query.
 * @return Grf file associated with the graphics, if any.
 */
static const GRFFile *GetIndTileGrffile(IndustryGfx gfx)
{
	const IndustryTileSpec *its = GetIndustryTileSpec(gfx);
	return (its != nullptr) ? its->grf_prop.grffile : nullptr;
}

/**
 * Constructor of the industry tiles scope resolver.
 * @param gfx Graphics of the industry.
 * @param tile %Tile of the industry.
 * @param indus %Industry owning the tile.
 * @param callback Callback ID.
 * @param callback_param1 First parameter (var 10) of the callback.
 * @param callback_param2 Second parameter (var 18) of the callback.
 */
IndustryTileResolverObject::IndustryTileResolverObject(IndustryGfx gfx, TileIndex tile, Industry *indus,
			CallbackID callback, uint32 callback_param1, uint32 callback_param2)
	: ResolverObject(GetIndTileGrffile(gfx), callback, callback_param1, callback_param2),
	indtile_scope(*this, indus, tile),
	ind_scope(*this, tile, indus, indus->type),
	gfx(gfx)
{
	this->root_spritegroup = GetIndustryTileSpec(gfx)->grf_prop.spritegroup[0];
}

GrfSpecFeature IndustryTileResolverObject::GetFeature() const
{
	return GSF_INDUSTRYTILES;
}

uint32 IndustryTileResolverObject::GetDebugID() const
{
	return GetIndustryTileSpec(gfx)->grf_prop.local_id;
}

static void IndustryDrawTileLayout(const TileInfo *ti, const TileLayoutSpriteGroup *group, byte rnd_colour, byte stage, IndustryGfx gfx)
{
	const DrawTileSprites *dts = group->ProcessRegisters(&stage);

	SpriteID image = dts->ground.sprite;
	PaletteID pal  = dts->ground.pal;

	if (HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE)) image += stage;
	if (HasBit(pal, SPRITE_MODIFIER_CUSTOM_SPRITE)) pal += stage;

	if (GB(image, 0, SPRITE_WIDTH) != 0) {
		/* If the ground sprite is the default flat water sprite, draw also canal/river borders
		 * Do not do this if the tile's WaterClass is 'land'. */
		if (image == SPR_FLAT_WATER_TILE && IsTileOnWater(ti->tile)) {
			DrawWaterClassGround(ti);
		} else {
			DrawGroundSprite(image, GroundSpritePaletteTransform(image, pal, GENERAL_SPRITE_COLOUR(rnd_colour)));
		}
	}

	DrawNewGRFTileSeq(ti, dts, TO_INDUSTRIES, stage, GENERAL_SPRITE_COLOUR(rnd_colour));
}

uint16 GetIndustryTileCallback(CallbackID callback, uint32 param1, uint32 param2, IndustryGfx gfx_id, Industry *industry, TileIndex tile)
{
	assert(industry != nullptr && IsValidTile(tile));
	assert(industry->index == INVALID_INDUSTRY || IsTileType(tile, MP_INDUSTRY));

	IndustryTileResolverObject object(gfx_id, tile, industry, callback, param1, param2);
	return object.ResolveCallback();
}

bool DrawNewIndustryTile(TileInfo *ti, Industry *i, IndustryGfx gfx, const IndustryTileSpec *inds)
{
	if (ti->tileh != SLOPE_FLAT) {
		bool draw_old_one = true;
		if (HasBit(inds->callback_mask, CBM_INDT_DRAW_FOUNDATIONS)) {
			/* Called to determine the type (if any) of foundation to draw for industry tile */
			uint32 callback_res = GetIndustryTileCallback(CBID_INDTILE_DRAW_FOUNDATIONS, 0, 0, gfx, i, ti->tile);
			if (callback_res != CALLBACK_FAILED) draw_old_one = ConvertBooleanCallback(inds->grf_prop.grffile, CBID_INDTILE_DRAW_FOUNDATIONS, callback_res);
		}

		if (draw_old_one) DrawFoundation(ti, FOUNDATION_LEVELED);
	}

	IndustryTileResolverObject object(gfx, ti->tile, i);

	const SpriteGroup *group = object.Resolve();
	if (group == nullptr || group->type != SGT_TILELAYOUT) return false;

	/* Limit the building stage to the number of stages supplied. */
	const TileLayoutSpriteGroup *tlgroup = (const TileLayoutSpriteGroup *)group;
	byte stage = GetIndustryConstructionStage(ti->tile);
	IndustryDrawTileLayout(ti, tlgroup, i->random_colour, stage, gfx);
	return true;
}

extern bool IsSlopeRefused(Slope current, Slope refused);

/**
 * Check the slope of a tile of a new industry.
 * @param ind_base_tile Base tile of the industry.
 * @param ind_tile      Tile to check.
 * @param its           Tile specification.
 * @param type          Industry type.
 * @param gfx           Gfx of the tile.
 * @param layout_index  Layout.
 * @param initial_random_bits Random bits of industry after construction
 * @param founder       Industry founder
 * @param creation_type The circumstances the industry is created under.
 * @return Succeeded or failed command.
 */
CommandCost PerformIndustryTileSlopeCheck(TileIndex ind_base_tile, TileIndex ind_tile, const IndustryTileSpec *its, IndustryType type, IndustryGfx gfx, size_t layout_index, uint16 initial_random_bits, Owner founder, IndustryAvailabilityCallType creation_type)
{
	Industry ind;
	ind.index = INVALID_INDUSTRY;
	ind.location.tile = ind_base_tile;
	ind.location.w = 0;
	ind.type = type;
	ind.random = initial_random_bits;
	ind.founder = founder;

	uint16 callback_res = GetIndustryTileCallback(CBID_INDTILE_SHAPE_CHECK, 0, creation_type << 8 | (uint32)layout_index, gfx, &ind, ind_tile);
	if (callback_res == CALLBACK_FAILED) {
		if (!IsSlopeRefused(GetTileSlope(ind_tile), its->slopes_refused)) return CommandCost();
		return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
	}
	if (its->grf_prop.grffile->grf_version < 7) {
		if (callback_res != 0) return CommandCost();
		return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
	}

	return GetErrorMessageFromLocationCallbackResult(callback_res, its->grf_prop.grffile, STR_ERROR_SITE_UNSUITABLE);
}

/* Simple wrapper for GetHouseCallback to keep the animation unified. */
uint16 GetSimpleIndustryCallback(CallbackID callback, uint32 param1, uint32 param2, const IndustryTileSpec *spec, Industry *ind, TileIndex tile, int extra_data)
{
	return GetIndustryTileCallback(callback, param1, param2, spec - GetIndustryTileSpec(0), ind, tile);
}

/** Helper class for animation control. */
struct IndustryAnimationBase : public AnimationBase<IndustryAnimationBase, IndustryTileSpec, Industry, int, GetSimpleIndustryCallback> {
	static const CallbackID cb_animation_speed      = CBID_INDTILE_ANIMATION_SPEED;
	static const CallbackID cb_animation_next_frame = CBID_INDTILE_ANIM_NEXT_FRAME;

	static const IndustryTileCallbackMask cbm_animation_speed      = CBM_INDT_ANIM_SPEED;
	static const IndustryTileCallbackMask cbm_animation_next_frame = CBM_INDT_ANIM_NEXT_FRAME;
};

void AnimateNewIndustryTile(TileIndex tile)
{
	const IndustryTileSpec *itspec = GetIndustryTileSpec(GetIndustryGfx(tile));
	if (itspec == nullptr) return;

	IndustryAnimationBase::AnimateTile(itspec, Industry::GetByTile(tile), tile, (itspec->special_flags & INDTILE_SPECIAL_NEXTFRAME_RANDOMBITS) != 0);
}

bool StartStopIndustryTileAnimation(TileIndex tile, IndustryAnimationTrigger iat, uint32 random)
{
	const IndustryTileSpec *itspec = GetIndustryTileSpec(GetIndustryGfx(tile));

	if (!HasBit(itspec->animation.triggers, iat)) return false;

	IndustryAnimationBase::ChangeAnimationFrame(CBID_INDTILE_ANIM_START_STOP, itspec, Industry::GetByTile(tile), tile, random, iat);
	return true;
}

bool StartStopIndustryTileAnimation(const Industry *ind, IndustryAnimationTrigger iat)
{
	bool ret = true;
	uint32 random = Random();
	TILE_AREA_LOOP(tile, ind->location) {
		if (ind->TileBelongsToIndustry(tile)) {
			if (StartStopIndustryTileAnimation(tile, iat, random)) {
				SB(random, 0, 16, Random());
			} else {
				ret = false;
			}
		}
	}

	return ret;
}

/**
 * Trigger random triggers for an industry tile and reseed its random bits.
 * @param tile Industry tile to trigger.
 * @param trigger Trigger to trigger.
 * @param ind Industry of the tile.
 * @param[in,out] reseed_industry Collects bits to reseed for the industry.
 */
static void DoTriggerIndustryTile(TileIndex tile, IndustryTileTrigger trigger, Industry *ind, uint32 &reseed_industry)
{
	assert(IsValidTile(tile) && IsTileType(tile, MP_INDUSTRY));

	IndustryGfx gfx = GetIndustryGfx(tile);
	const IndustryTileSpec *itspec = GetIndustryTileSpec(gfx);

	if (itspec->grf_prop.spritegroup[0] == nullptr) return;

	IndustryTileResolverObject object(gfx, tile, ind, CBID_RANDOM_TRIGGER);
	object.waiting_triggers = GetIndustryTriggers(tile) | trigger;
	SetIndustryTriggers(tile, object.waiting_triggers); // store now for var 5F

	const SpriteGroup *group = object.Resolve();
	if (group == nullptr) return;

	/* Store remaining triggers. */
	SetIndustryTriggers(tile, object.GetRemainingTriggers());

	/* Rerandomise tile bits */
	byte new_random_bits = Random();
	byte random_bits = GetIndustryRandomBits(tile);
	random_bits &= ~object.reseed[VSG_SCOPE_SELF];
	random_bits |= new_random_bits & object.reseed[VSG_SCOPE_SELF];
	SetIndustryRandomBits(tile, random_bits);
	MarkTileDirtyByTile(tile);

	reseed_industry |= object.reseed[VSG_SCOPE_PARENT];
}

/**
 * Reseeds the random bits of an industry.
 * @param ind Industry.
 * @param reseed Bits to reseed.
 */
static void DoReseedIndustry(Industry *ind, uint32 reseed)
{
	if (reseed == 0 || ind == nullptr) return;

	uint16 random_bits = Random();
	ind->random &= reseed;
	ind->random |= random_bits & reseed;
}

/**
 * Trigger a random trigger for a single industry tile.
 * @param tile Industry tile to trigger.
 * @param trigger Trigger to trigger.
 */
void TriggerIndustryTile(TileIndex tile, IndustryTileTrigger trigger)
{
	uint32 reseed_industry = 0;
	Industry *ind = Industry::GetByTile(tile);
	DoTriggerIndustryTile(tile, trigger, ind, reseed_industry);
	DoReseedIndustry(ind, reseed_industry);
}

/**
 * Trigger a random trigger for all industry tiles.
 * @param ind Industry to trigger.
 * @param trigger Trigger to trigger.
 */
void TriggerIndustry(Industry *ind, IndustryTileTrigger trigger)
{
	uint32 reseed_industry = 0;
	TILE_AREA_LOOP(tile, ind->location) {
		if (ind->TileBelongsToIndustry(tile)) {
			DoTriggerIndustryTile(tile, trigger, ind, reseed_industry);
		}
	}
	DoReseedIndustry(ind, reseed_industry);
}