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newgrf_airporttiles.cpp
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1 /* $Id: newgrf_airporttiles.cpp 26482 2014-04-23 20:13:33Z rubidium $ */
2
3 /*
4 * This file is part of OpenTTD.
5 * 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.
6 * 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.
7 * 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/>.
8 */
9
12 #include "stdafx.h"
13 #include "debug.h"
14 #include "newgrf_airporttiles.h"
15 #include "newgrf_spritegroup.h"
16 #include "newgrf_sound.h"
17 #include "station_base.h"
18 #include "water.h"
19 #include "landscape.h"
20 #include "company_base.h"
21 #include "town.h"
22 #include "table/strings.h"
23 #include "table/airporttiles.h"
24 #include "newgrf_animation_base.h"
25
26 #include "safeguards.h"
27
28
29 AirportTileSpec AirportTileSpec::tiles[NUM_AIRPORTTILES];
30
31 AirportTileOverrideManager _airporttile_mngr(NEW_AIRPORTTILE_OFFSET, NUM_AIRPORTTILES, INVALID_AIRPORTTILE);
32
38 /* static */ const AirportTileSpec *AirportTileSpec::Get(StationGfx gfx)
39 {
40 /* should be assert(gfx < lengthof(tiles)), but that gives compiler warnings
41 * since it's always true if the following holds: */
42 assert_compile(MAX_UVALUE(StationGfx) + 1 == lengthof(tiles));
43 return &AirportTileSpec::tiles[gfx];
44 }
45
51 /* static */ const AirportTileSpec *AirportTileSpec::GetByTile(TileIndex tile)
52 {
53 return AirportTileSpec::Get(GetAirportGfx(tile));
54 }
55
59 void AirportTileSpec::ResetAirportTiles()
60 {
61 memset(&AirportTileSpec::tiles, 0, sizeof(AirportTileSpec::tiles));
62 memcpy(&AirportTileSpec::tiles, &_origin_airporttile_specs, sizeof(_origin_airporttile_specs));
63
64 /* Reset any overrides that have been set. */
65 _airporttile_mngr.ResetOverride();
66 }
67
68 void AirportTileOverrideManager::SetEntitySpec(const AirportTileSpec *airpts)
69 {
70 StationGfx airpt_id = this->AddEntityID(airpts->grf_prop.local_id, airpts->grf_prop.grffile->grfid, airpts->grf_prop.subst_id);
71
72 if (airpt_id == invalid_ID) {
73 grfmsg(1, "AirportTile.SetEntitySpec: Too many airport tiles allocated. Ignoring.");
74 return;
75 }
76
77 memcpy(&AirportTileSpec::tiles[airpt_id], airpts, sizeof(*airpts));
78
79 /* Now add the overrides. */
80 for (int i = 0; i < max_offset; i++) {
81 AirportTileSpec *overridden_airpts = &AirportTileSpec::tiles[i];
82
83 if (entity_overrides[i] != airpts->grf_prop.local_id || grfid_overrides[i] != airpts->grf_prop.grffile->grfid) continue;
84
85 overridden_airpts->grf_prop.override = airpt_id;
86 overridden_airpts->enabled = false;
87 entity_overrides[i] = invalid_ID;
88 grfid_overrides[i] = 0;
89 }
90 }
91
97 StationGfx GetTranslatedAirportTileID(StationGfx gfx)
98 {
99 const AirportTileSpec *it = AirportTileSpec::Get(gfx);
100 return it->grf_prop.override == INVALID_AIRPORTTILE ? gfx : it->grf_prop.override;
101 }
102
111 static uint32 GetNearbyAirportTileInformation(byte parameter, TileIndex tile, StationID index, bool grf_version8)
112 {
113 if (parameter != 0) tile = GetNearbyTile(parameter, tile); // only perform if it is required
114 bool is_same_airport = (IsTileType(tile, MP_STATION) && IsAirport(tile) && GetStationIndex(tile) == index);
115
116 return GetNearbyTileInformation(tile, grf_version8) | (is_same_airport ? 1 : 0) << 8;
117 }
118
119
128 static uint32 GetAirportTileIDAtOffset(TileIndex tile, const Station *st, uint32 cur_grfid)
129 {
130 if (!st->TileBelongsToAirport(tile)) {
131 return 0xFFFF;
132 }
133
134 StationGfx gfx = GetAirportGfx(tile);
135 const AirportTileSpec *ats = AirportTileSpec::Get(gfx);
136
137 if (gfx < NEW_AIRPORTTILE_OFFSET) { // Does it belongs to an old type?
138 /* It is an old tile. We have to see if it's been overridden */
139 if (ats->grf_prop.override == INVALID_AIRPORTTILE) { // has it been overridden?
140 return 0xFF << 8 | gfx; // no. Tag FF + the gfx id of that tile
141 }
142 /* Overridden */
143 const AirportTileSpec *tile_ovr = AirportTileSpec::Get(ats->grf_prop.override);
144
145 if (tile_ovr->grf_prop.grffile->grfid == cur_grfid) {
146 return tile_ovr->grf_prop.local_id; // same grf file
147 } else {
148 return 0xFFFE; // not the same grf file
149 }
150 }
151 /* Not an 'old type' tile */
152 if (ats->grf_prop.spritegroup[0] != NULL) { // tile has a spritegroup ?
153 if (ats->grf_prop.grffile->grfid == cur_grfid) { // same airport, same grf ?
154 return ats->grf_prop.local_id;
155 } else {
156 return 0xFFFE; // Defined in another grf file
157 }
158 }
159 /* The tile has no spritegroup */
160 return 0xFF << 8 | ats->grf_prop.subst_id; // so just give him the substitute
161 }
162
163 /* virtual */ uint32 AirportTileScopeResolver::GetVariable(byte variable, uint32 parameter, bool *available) const
164 {
165 assert(this->st != NULL);
166
167 extern uint32 GetRelativePosition(TileIndex tile, TileIndex ind_tile);
168
169 switch (variable) {
170 /* Terrain type */
171 case 0x41: return GetTerrainType(this->tile);
172
173 /* Current town zone of the tile in the nearest town */
174 case 0x42: return GetTownRadiusGroup(ClosestTownFromTile(this->tile, UINT_MAX), this->tile);
175
176 /* Position relative to most northern airport tile. */
177 case 0x43: return GetRelativePosition(this->tile, this->st->airport.tile);
178
179 /* Animation frame of tile */
180 case 0x44: return GetAnimationFrame(this->tile);
181
182 /* Land info of nearby tiles */
183 case 0x60: return GetNearbyAirportTileInformation(parameter, this->tile, this->st->index, this->ro.grffile->grf_version >= 8);
184
185 /* Animation stage of nearby tiles */
186 case 0x61: {
187 TileIndex tile = GetNearbyTile(parameter, this->tile);
188 if (this->st->TileBelongsToAirport(tile)) {
189 return GetAnimationFrame(tile);
190 }
191 return UINT_MAX;
192 }
193
194 /* Get airport tile ID at offset */
195 case 0x62: return GetAirportTileIDAtOffset(GetNearbyTile(parameter, this->tile), this->st, this->ro.grffile->grfid);
196 }
197
198 DEBUG(grf, 1, "Unhandled airport tile variable 0x%X", variable);
199
200 *available = false;
201 return UINT_MAX;
202 }
203
204 /* virtual */ uint32 AirportTileScopeResolver::GetRandomBits() const
205 {
206 return (this->st == NULL ? 0 : this->st->random_bits) | (this->tile == INVALID_TILE ? 0 : GetStationTileRandomBits(this->tile) << 16);
207 }
208
218 AirportTileResolverObject::AirportTileResolverObject(const AirportTileSpec *ats, TileIndex tile, Station *st,
219 CallbackID callback, uint32 callback_param1, uint32 callback_param2)
220 : ResolverObject(ats->grf_prop.grffile, callback, callback_param1, callback_param2), tiles_scope(*this, ats, tile, st)
221 {
222 this->root_spritegroup = ats->grf_prop.spritegroup[0];
223 }
224
231 AirportTileScopeResolver::AirportTileScopeResolver(ResolverObject &ro, const AirportTileSpec *ats, TileIndex tile, Station *st) : ScopeResolver(ro)
232 {
233 assert(st != NULL);
234
235 this->st = st;
236 this->airport_id = st->airport.type;
237 this->tile = tile;
238 }
239
240 uint16 GetAirportTileCallback(CallbackID callback, uint32 param1, uint32 param2, const AirportTileSpec *ats, Station *st, TileIndex tile, int extra_data = 0)
241 {
242 AirportTileResolverObject object(ats, tile, st, callback, param1, param2);
243 return object.ResolveCallback();
244 }
245
246 static void AirportDrawTileLayout(const TileInfo *ti, const TileLayoutSpriteGroup *group, byte colour, StationGfx gfx)
247 {
248 const DrawTileSprites *dts = group->ProcessRegisters(NULL);
249
250 SpriteID image = dts->ground.sprite;
251 SpriteID pal = dts->ground.pal;
252
253 if (GB(image, 0, SPRITE_WIDTH) != 0) {
254 if (image == SPR_FLAT_WATER_TILE && IsTileOnWater(ti->tile)) {
255 DrawWaterClassGround(ti);
256 } else {
257 DrawGroundSprite(image, GroundSpritePaletteTransform(image, pal, GENERAL_SPRITE_COLOUR(colour)));
258 }
259 }
260
261 DrawNewGRFTileSeq(ti, dts, TO_BUILDINGS, 0, GENERAL_SPRITE_COLOUR(colour));
262 }
263
264 bool DrawNewAirportTile(TileInfo *ti, Station *st, StationGfx gfx, const AirportTileSpec *airts)
265 {
266 if (ti->tileh != SLOPE_FLAT) {
267 bool draw_old_one = true;
268 if (HasBit(airts->callback_mask, CBM_AIRT_DRAW_FOUNDATIONS)) {
269 /* Called to determine the type (if any) of foundation to draw */
270 uint32 callback_res = GetAirportTileCallback(CBID_AIRPTILE_DRAW_FOUNDATIONS, 0, 0, airts, st, ti->tile);
271 if (callback_res != CALLBACK_FAILED) draw_old_one = ConvertBooleanCallback(airts->grf_prop.grffile, CBID_AIRPTILE_DRAW_FOUNDATIONS, callback_res);
272 }
273
274 if (draw_old_one) DrawFoundation(ti, FOUNDATION_LEVELED);
275 }
276
277 AirportTileResolverObject object(airts, ti->tile, st);
278 const SpriteGroup *group = object.Resolve();
279 if (group == NULL || group->type != SGT_TILELAYOUT) {
280 return false;
281 }
282
283 const TileLayoutSpriteGroup *tlgroup = (const TileLayoutSpriteGroup *)group;
284 AirportDrawTileLayout(ti, tlgroup, Company::Get(st->owner)->colour, gfx);
285 return true;
286 }
287
289 struct AirportTileAnimationBase : public AnimationBase<AirportTileAnimationBase, AirportTileSpec, Station, int, GetAirportTileCallback> {
290 static const CallbackID cb_animation_speed = CBID_AIRPTILE_ANIMATION_SPEED;
291 static const CallbackID cb_animation_next_frame = CBID_AIRPTILE_ANIM_NEXT_FRAME;
292
293 static const AirportTileCallbackMask cbm_animation_speed = CBM_AIRT_ANIM_SPEED;
294 static const AirportTileCallbackMask cbm_animation_next_frame = CBM_AIRT_ANIM_NEXT_FRAME;
295 };
296
297 void AnimateAirportTile(TileIndex tile)
298 {
299 const AirportTileSpec *ats = AirportTileSpec::GetByTile(tile);
300 if (ats == NULL) return;
301
302 AirportTileAnimationBase::AnimateTile(ats, Station::GetByTile(tile), tile, HasBit(ats->animation_special_flags, 0));
303 }
304
305 void AirportTileAnimationTrigger(Station *st, TileIndex tile, AirpAnimationTrigger trigger, CargoID cargo_type)
306 {
307 const AirportTileSpec *ats = AirportTileSpec::GetByTile(tile);
308 if (!HasBit(ats->animation.triggers, trigger)) return;
309
310 AirportTileAnimationBase::ChangeAnimationFrame(CBID_AIRPTILE_ANIM_START_STOP, ats, st, tile, Random(), (uint8)trigger | (cargo_type << 8));
311 }
312
313 void AirportAnimationTrigger(Station *st, AirpAnimationTrigger trigger, CargoID cargo_type)
314 {
315 if (st->airport.tile == INVALID_TILE) return;
316
317 TILE_AREA_LOOP(tile, st->airport) {
318 if (st->TileBelongsToAirport(tile)) AirportTileAnimationTrigger(st, tile, trigger, cargo_type);
319 }
320 }
321