belugas@7380: /* $Id$ */
belugas@7380: 
belugas@7380: /** @file newgrf_industrytiles.cpp */
belugas@7380: 
belugas@7380: #include "stdafx.h"
belugas@7380: #include "openttd.h"
belugas@7380: #include "variables.h"
belugas@7380: #include "debug.h"
rubidium@8721: #include "viewport_func.h"
belugas@7380: #include "landscape.h"
belugas@7380: #include "newgrf.h"
belugas@7380: #include "industry.h"
belugas@7380: #include "newgrf_commons.h"
belugas@7380: #include "newgrf_spritegroup.h"
belugas@7380: #include "newgrf_callbacks.h"
belugas@7380: #include "newgrf_industries.h"
rubidium@7725: #include "newgrf_industrytiles.h"
rubidium@7708: #include "newgrf_text.h"
belugas@7380: #include "industry_map.h"
belugas@7380: #include "clear_map.h"
belugas@7380: #include "sprite.h"
belugas@8345: #include "transparency.h"
rubidium@8627: #include "functions.h"
rubidium@8709: #include "town.h"
rubidium@8771: #include "command_func.h"
belugas@7380: 
rubidium@8760: #include "table/sprites.h"
rubidium@8760: #include "table/strings.h"
rubidium@8760: 
rubidium@8586: static uint32 GetGRFParameter(IndustryGfx indtile_id, byte parameter)
rubidium@8586: {
rubidium@8586: 	const IndustryTileSpec *indtspec = GetIndustryTileSpec(indtile_id);
rubidium@8586: 	const GRFFile *file = indtspec->grf_prop.grffile;
rubidium@8586: 
rubidium@8586: 	if (parameter >= file->param_end) return 0;
rubidium@8586: 	return file->param[parameter];
rubidium@8586: }
rubidium@8586: 
belugas@7380: /**
belugas@7380:  * Based on newhouses equivalent, but adapted for newindustries
belugas@7380:  * @param parameter from callback.  It's in fact a pair of coordinates
belugas@7380:  * @param tile TileIndex from which the callback was initiated
belugas@7380:  * @param index of the industry been queried for
belugas@7380:  * @return a construction of bits obeying the newgrf format
belugas@7380:  */
rubidium@7730: uint32 GetNearbyIndustryTileInformation(byte parameter, TileIndex tile, IndustryID index)
belugas@7380: {
belugas@7942: 	if (parameter != 0) tile = GetNearbyTile(parameter, tile); // only perform if it is required
frosch@8954: 	bool is_same_industry = (IsTileType(tile, MP_INDUSTRY) && GetIndustryIndex(tile) == index);
belugas@7380: 
frosch@8954: 	return GetNearbyTileInformation(tile) | (is_same_industry ? 1 : 0) << 8;
belugas@7380: }
belugas@7380: 
belugas@7380: /** This is the position of the tile relative to the northernmost tile of the industry.
belugas@7380:  * Format: 00yxYYXX
belugas@7380:  * Variable  Content
belugas@7380:  * x         the x offset from the northernmost tile
belugas@7380:  * XX        same, but stored in a byte instead of a nibble
belugas@7380:  * y         the y offset from the northernmost tile
belugas@7380:  * YY        same, but stored in a byte instead of a nibble
belugas@7380:  * @param tile TileIndex of the tile to evaluate
belugas@7380:  * @param ind_tile northernmost tile of the industry
belugas@7380:  */
belugas@7380: static uint32 GetRelativePosition(TileIndex tile, TileIndex ind_tile)
belugas@7380: {
belugas@7415: 	byte x = TileX(tile) - TileX(ind_tile);
belugas@7415: 	byte y = TileY(tile) - TileY(ind_tile);
belugas@7380: 
belugas@7380: 	return ((y & 0xF) << 20) | ((x & 0xF) << 16) | (y << 8) | x;
belugas@7380: }
belugas@7380: 
belugas@7380: static uint32 IndustryTileGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available)
belugas@7380: {
belugas@7380: 	const Industry *inds = object->u.industry.ind;
belugas@7380: 	TileIndex tile       = object->u.industry.tile;
belugas@7380: 
belugas@7380: 	if (object->scope == VSG_SCOPE_PARENT) {
belugas@7380: 		return IndustryGetVariable(object, variable, parameter, available);
belugas@7380: 	}
belugas@7380: 
belugas@7380: 	switch (variable) {
belugas@7395: 		 /* Construction state of the tile: a value between 0 and 3 */
belugas@7395: 		case 0x40 : return (IsTileType(tile, MP_INDUSTRY)) ? GetIndustryConstructionStage(tile) : 0;
belugas@7380: 
belugas@7380: 		case 0x41 : return GetTerrainType(tile);
belugas@7380: 
belugas@7395: 		/* Current town zone of the tile in the nearest town */
belugas@7395: 		case 0x42 : return GetTownRadiusGroup(ClosestTownFromTile(tile, (uint)-1), tile);
belugas@7380: 
belugas@7395: 		/* Relative position */
belugas@7395: 		case 0x43 : return GetRelativePosition(tile, inds->xy);
belugas@7380: 
belugas@7395: 		/* Animation frame. Like house variable 46 but can contain anything 0..FF. */
belugas@7395: 		case 0x44 : return (IsTileType(tile, MP_INDUSTRY)) ? GetIndustryAnimationState(tile) : 0;
belugas@7380: 
belugas@7395: 		/* Land info of nearby tiles */
rubidium@7708: 		case 0x60 : return GetNearbyIndustryTileInformation(parameter, tile, inds == NULL ? (IndustryID)INVALID_INDUSTRY : inds->index);
belugas@7380: 
rubidium@7730: 		/* Animation stage of nearby tiles */
rubidium@7730: 		case 0x61 : {
belugas@7380: 			tile = GetNearbyTile(parameter, tile);
belugas@7395: 			if (IsTileType(tile, MP_INDUSTRY) && GetIndustryByTile(tile) == inds) {
belugas@7395: 				return GetIndustryAnimationState(tile);
belugas@7395: 			}
belugas@7395: 			return 0xFFFFFFFF;
belugas@7380: 		}
belugas@7380: 
belugas@7380: 		/* Get industry tile ID at offset */
rubidium@8118: 		case 0x62 : return GetIndustryIDAtOffset(GetNearbyTile(parameter, tile), inds);
rubidium@8586: 
rubidium@8586: 		/* Read GRF parameter */
rubidium@8586: 		case 0x7F: return GetGRFParameter(GetIndustryGfx(tile), parameter);
belugas@7380: 	}
belugas@7380: 
rubidium@7729: 	DEBUG(grf, 1, "Unhandled industry tile property 0x%X", variable);
rubidium@7729: 
rubidium@7729: 	*available = false;
rubidium@7729: 	return (uint32)-1;
belugas@7380: }
belugas@7380: 
belugas@7380: static const SpriteGroup *IndustryTileResolveReal(const ResolverObject *object, const SpriteGroup *group)
belugas@7380: {
belugas@7380: 	/* IndustryTile do not have 'real' groups.  Or do they?? */
belugas@7380: 	return NULL;
belugas@7380: }
belugas@7380: 
rubidium@8117: static uint32 IndustryTileGetRandomBits(const ResolverObject *object)
belugas@7380: {
belugas@7380: 	const TileIndex tile = object->u.industry.tile;
rubidium@8117: 	if (tile == INVALID_TILE || !IsTileType(tile, MP_INDUSTRY)) return 0;
rubidium@8356: 	return (object->scope == VSG_SCOPE_SELF) ? GetIndustryRandomBits(tile) : GetIndustryByTile(tile)->random;
belugas@7380: }
belugas@7380: 
rubidium@8117: static uint32 IndustryTileGetTriggers(const ResolverObject *object)
belugas@7380: {
belugas@7380: 	const TileIndex tile = object->u.industry.tile;
rubidium@8117: 	if (tile == INVALID_TILE || !IsTileType(tile, MP_INDUSTRY)) return 0;
rubidium@8356: 	return (object->scope == VSG_SCOPE_SELF) ? GetIndustryTriggers(tile) : GetIndustryByTile(tile)->random_triggers;
belugas@7380: }
belugas@7380: 
rubidium@8117: static void IndustryTileSetTriggers(const ResolverObject *object, int triggers)
belugas@7380: {
belugas@7380: 	const TileIndex tile = object->u.industry.tile;
rubidium@8117: 	if (tile == INVALID_TILE || !IsTileType(tile, MP_INDUSTRY)) return;
rubidium@8117: 
rubidium@8356: 	if (object->scope == VSG_SCOPE_SELF) {
rubidium@8117: 		SetIndustryTriggers(tile, triggers);
rubidium@8117: 	} else {
rubidium@8356: 		GetIndustryByTile(tile)->random_triggers = triggers;
rubidium@8117: 	}
belugas@7380: }
belugas@7380: 
belugas@7380: static void NewIndustryTileResolver(ResolverObject *res, IndustryGfx gfx, TileIndex tile, Industry *indus)
belugas@7380: {
belugas@7380: 	res->GetRandomBits = IndustryTileGetRandomBits;
belugas@7380: 	res->GetTriggers   = IndustryTileGetTriggers;
belugas@7380: 	res->SetTriggers   = IndustryTileSetTriggers;
belugas@7380: 	res->GetVariable   = IndustryTileGetVariable;
belugas@7380: 	res->ResolveReal   = IndustryTileResolveReal;
belugas@7380: 
rubidium@8106: 	res->psa             = &indus->psa;
belugas@7380: 	res->u.industry.tile = tile;
belugas@7380: 	res->u.industry.ind  = indus;
belugas@7380: 	res->u.industry.gfx  = gfx;
belugas@8736: 	res->u.industry.type = indus->type;
belugas@7380: 
rubidium@7823: 	res->callback        = CBID_NO_CALLBACK;
belugas@7380: 	res->callback_param1 = 0;
belugas@7380: 	res->callback_param2 = 0;
belugas@7380: 	res->last_value      = 0;
belugas@7380: 	res->trigger         = 0;
belugas@7380: 	res->reseed          = 0;
belugas@7380: }
belugas@7380: 
belugas@7466: void IndustryDrawTileLayout(const TileInfo *ti, const SpriteGroup *group, byte rnd_color, byte stage, IndustryGfx gfx)
belugas@7466: {
belugas@7466: 	const DrawTileSprites *dts = group->g.layout.dts;
belugas@7466: 	const DrawTileSeqStruct *dtss;
belugas@7466: 
frosch@9067: 	SpriteID image = dts->ground.sprite;
frosch@9067: 	SpriteID pal   = dts->ground.pal;
belugas@7466: 
rubidium@8152: 	if (IS_CUSTOM_SPRITE(image)) image += stage;
rubidium@8152: 
belugas@7466: 	if (GB(image, 0, SPRITE_WIDTH) != 0) DrawGroundSprite(image, pal);
belugas@7466: 
belugas@7466: 	foreach_draw_tile_seq(dtss, dts->seq) {
frosch@9066: 		if (GB(dtss->image.sprite, 0, SPRITE_WIDTH) == 0) continue;
belugas@7466: 
frosch@9066: 		image = dtss->image.sprite;
frosch@9066: 		pal   = dtss->image.pal;
belugas@7466: 
rubidium@8152: 		if (IS_CUSTOM_SPRITE(image)) image += stage;
rubidium@8152: 
skidd13@8424: 		if (HasBit(image, PALETTE_MODIFIER_COLOR)) {
rubidium@8321: 			if (pal == 0) {
rubidium@8321: 				pal = GENERAL_SPRITE_COLOR(rnd_color);
rubidium@8321: 			}
belugas@7466: 		} else {
belugas@7466: 			pal = PAL_NONE;
belugas@7466: 		}
belugas@7466: 
belugas@7466: 		if ((byte)dtss->delta_z != 0x80) {
belugas@7466: 			AddSortableSpriteToDraw(
belugas@7466: 				image, pal,
belugas@7466: 				ti->x + dtss->delta_x, ti->y + dtss->delta_y,
belugas@7466: 				dtss->size_x, dtss->size_y,
rubidium@7829: 				dtss->size_z, ti->z + dtss->delta_z,
skidd13@8424: 				!HasBit(image, SPRITE_MODIFIER_OPAQUE) && IsTransparencySet(TO_INDUSTRIES)
belugas@7466: 			);
belugas@7466: 		} else {
belugas@8345: 			AddChildSpriteScreen(image, pal, (byte)dtss->delta_x, (byte)dtss->delta_y, IsTransparencySet(TO_INDUSTRIES));
belugas@7466: 		}
belugas@7466: 	}
belugas@7466: }
belugas@7466: 
rubidium@7823: uint16 GetIndustryTileCallback(CallbackID callback, uint32 param1, uint32 param2, IndustryGfx gfx_id, Industry *industry, TileIndex tile)
belugas@7380: {
belugas@7380: 	ResolverObject object;
belugas@7380: 	const SpriteGroup *group;
belugas@7380: 
belugas@7380: 	NewIndustryTileResolver(&object, gfx_id, tile, industry);
belugas@7380: 	object.callback = callback;
belugas@7380: 	object.callback_param1 = param1;
belugas@7380: 	object.callback_param2 = param2;
belugas@7380: 
belugas@7380: 	group = Resolve(GetIndustryTileSpec(gfx_id)->grf_prop.spritegroup, &object);
belugas@7380: 	if (group == NULL || group->type != SGT_CALLBACK) return CALLBACK_FAILED;
belugas@7380: 
belugas@7380: 	return group->g.callback.result;
belugas@7380: }
belugas@7466: 
belugas@7466: bool DrawNewIndustryTile(TileInfo *ti, Industry *i, IndustryGfx gfx, const IndustryTileSpec *inds)
belugas@7466: {
belugas@7466: 	const SpriteGroup *group;
belugas@7466: 	ResolverObject object;
belugas@7466: 
belugas@7466: 	if (ti->tileh != SLOPE_FLAT) {
belugas@7466: 		bool draw_old_one = true;
skidd13@8424: 		if (HasBit(inds->callback_flags, CBM_INDT_DRAW_FOUNDATIONS)) {
belugas@7466: 			/* Called to determine the type (if any) of foundation to draw for industry tile */
belugas@7466: 			uint32 callback_res = GetIndustryTileCallback(CBID_INDUSTRY_DRAW_FOUNDATIONS, 0, 0, gfx, i, ti->tile);
rubidium@7704: 			draw_old_one = callback_res != 0;
belugas@7466: 		}
belugas@7466: 
rubidium@7831: 		if (draw_old_one) DrawFoundation(ti, FOUNDATION_LEVELED);
belugas@7466: 	}
belugas@7466: 
belugas@7466: 	NewIndustryTileResolver(&object, gfx, ti->tile, i);
belugas@7466: 
belugas@7466: 	group = Resolve(inds->grf_prop.spritegroup, &object);
belugas@7466: 	if (group == NULL || group->type != SGT_TILELAYOUT) {
belugas@7466: 		return false;
belugas@7466: 	} else {
belugas@7466: 		/* Limit the building stage to the number of stages supplied. */
belugas@7466: 		byte stage = GetIndustryConstructionStage(ti->tile);
skidd13@8418: 		stage = Clamp(stage - 4 + group->g.layout.num_sprites, 0, group->g.layout.num_sprites - 1);
belugas@7466: 		IndustryDrawTileLayout(ti, group, i->random_color, stage, gfx);
belugas@7466: 		return true;
belugas@7466: 	}
belugas@7466: }
rubidium@7708: 
rubidium@8158: extern bool IsSlopeRefused(Slope current, Slope refused);
rubidium@8158: 
rubidium@8158: bool PerformIndustryTileSlopeCheck(TileIndex ind_base_tile, TileIndex ind_tile, const IndustryTileSpec *its, IndustryType type, IndustryGfx gfx, uint itspec_index)
rubidium@7708: {
rubidium@7712: 	Industry ind;
rubidium@8158: 	ind.index = INVALID_INDUSTRY;
rubidium@8158: 	ind.xy = ind_base_tile;
belugas@7942: 	ind.width = 0;
rubidium@7712: 	ind.type = type;
rubidium@7712: 
rubidium@8158: 	uint16 callback_res = GetIndustryTileCallback(CBID_INDTILE_SHAPE_CHECK, 0, itspec_index, gfx, &ind, ind_tile);
rubidium@8158: 	if (callback_res == CALLBACK_FAILED) {
rubidium@8158: 		return !IsSlopeRefused(GetTileSlope(ind_tile, NULL), its->slopes_refused);
rubidium@8158: 	}
rubidium@7708: 	if (its->grf_prop.grffile->grf_version < 7) {
frosch@9182: 		return (callback_res & 0xFF) != 0; // mask to 8 bit callback result
rubidium@7708: 	}
rubidium@7708: 
rubidium@8246: 	/* Copy some parameters from the registers to the error message text ref. stack */
rubidium@8246: 	SwitchToErrorRefStack();
rubidium@8246: 	PrepareTextRefStackUsage(4);
rubidium@8246: 	SwitchToNormalRefStack();
rubidium@8246: 
rubidium@7708: 	switch (callback_res) {
rubidium@7708: 		case 0x400: return true;
rubidium@7708: 		case 0x401: _error_message = STR_0239_SITE_UNSUITABLE;                 return false;
rubidium@7708: 		case 0x402: _error_message = STR_0317_CAN_ONLY_BE_BUILT_IN_RAINFOREST; return false;
rubidium@7708: 		case 0x403: _error_message = STR_0318_CAN_ONLY_BE_BUILT_IN_DESERT;     return false;
rubidium@7708: 		default: _error_message = GetGRFStringID(its->grf_prop.grffile->grfid, 0xD000 + callback_res); return false;
rubidium@7708: 	}
rubidium@7708: }
rubidium@7725: 
rubidium@7725: void AnimateNewIndustryTile(TileIndex tile)
rubidium@7725: {
rubidium@7725: 	Industry *ind = GetIndustryByTile(tile);
rubidium@7725: 	IndustryGfx gfx = GetIndustryGfx(tile);
rubidium@7725: 	const IndustryTileSpec *itspec = GetIndustryTileSpec(gfx);
rubidium@7725: 	byte animation_speed = itspec->animation_speed;
rubidium@7725: 
skidd13@8424: 	if (HasBit(itspec->callback_flags, CBM_INDT_ANIM_SPEED)) {
rubidium@7725: 		uint16 callback_res = GetIndustryTileCallback(CBID_INDTILE_ANIMATION_SPEED, 0, 0, gfx, ind, tile);
skidd13@8418: 		if (callback_res != CALLBACK_FAILED) animation_speed = Clamp(callback_res & 0xFF, 0, 16);
rubidium@7725: 	}
rubidium@7725: 
rubidium@7725: 	/* An animation speed of 2 means the animation frame changes 4 ticks, and
rubidium@7725: 	 * increasing this value by one doubles the wait. 0 is the minimum value
rubidium@7725: 	 * allowed for animation_speed, which corresponds to 30ms, and 16 is the
rubidium@7725: 	 * maximum, corresponding to around 33 minutes. */
rubidium@7725: 	if ((_tick_counter % (1 << animation_speed)) != 0) return;
rubidium@7725: 
rubidium@7725: 	bool frame_set_by_callback = false;
rubidium@7725: 	byte frame = GetIndustryAnimationState(tile);
belugas@8203: 	uint16 num_frames = GB(itspec->animation_info, 0, 8);
rubidium@7725: 
skidd13@8424: 	if (HasBit(itspec->callback_flags, CBM_INDT_ANIM_NEXT_FRAME)) {
skidd13@8424: 		uint16 callback_res = GetIndustryTileCallback(CBID_INDTILE_ANIM_NEXT_FRAME, HasBit(itspec->animation_special_flags, 0) ? Random() : 0, 0, gfx, ind, tile);
rubidium@7725: 
rubidium@7725: 		if (callback_res != CALLBACK_FAILED) {
rubidium@7725: 			frame_set_by_callback = true;
rubidium@7725: 
rubidium@7725: 			switch (callback_res & 0xFF) {
rubidium@7725: 				case 0xFF:
rubidium@7725: 					DeleteAnimatedTile(tile);
rubidium@7725: 					break;
rubidium@7725: 				case 0xFE:
rubidium@7725: 					/* Carry on as normal. */
rubidium@7725: 					frame_set_by_callback = false;
rubidium@7725: 					break;
rubidium@7725: 				default:
rubidium@7725: 					frame = callback_res & 0xFF;
rubidium@7725: 					break;
rubidium@7725: 			}
rubidium@7725: 		}
rubidium@7725: 	}
rubidium@7725: 
rubidium@7725: 	if (!frame_set_by_callback) {
rubidium@7725: 		if (frame < num_frames) {
rubidium@7725: 			frame++;
rubidium@7725: 		} else if (frame == num_frames && GB(itspec->animation_info, 8, 8) == 1) {
rubidium@7725: 			/* This animation loops, so start again from the beginning */
rubidium@7725: 			frame = 0;
rubidium@7725: 		} else {
rubidium@7725: 			/* This animation doesn't loop, so stay here */
rubidium@7725: 			DeleteAnimatedTile(tile);
rubidium@7725: 		}
rubidium@7725: 	}
rubidium@7725: 
rubidium@7725: 	SetIndustryAnimationState(tile, frame);
rubidium@7725: 	MarkTileDirtyByTile(tile);
rubidium@7725: }
rubidium@7725: 
rubidium@7725: static void ChangeIndustryTileAnimationFrame(TileIndex tile, IndustryAnimationTrigger iat, uint32 random_bits, IndustryGfx gfx, Industry *ind)
rubidium@7725: {
rubidium@7725: 	uint16 callback_res = GetIndustryTileCallback(CBID_INDTILE_ANIM_START_STOP, random_bits, iat, gfx, ind, tile);
rubidium@7725: 	if (callback_res == CALLBACK_FAILED) return;
rubidium@7725: 
rubidium@7725: 	switch (callback_res & 0xFF) {
rubidium@7725: 		case 0xFD: /* Do nothing. */         break;
rubidium@7725: 		case 0xFE: AddAnimatedTile(tile);    break;
rubidium@7725: 		case 0xFF: DeleteAnimatedTile(tile); break;
rubidium@7725: 		default:
rubidium@7725: 			SetIndustryAnimationState(tile, callback_res & 0xFF);
rubidium@7725: 			AddAnimatedTile(tile);
rubidium@7725: 			break;
rubidium@7725: 	}
rubidium@7725: }
rubidium@7725: 
rubidium@7725: bool StartStopIndustryTileAnimation(TileIndex tile, IndustryAnimationTrigger iat, uint32 random)
rubidium@7725: {
rubidium@7725: 	IndustryGfx gfx = GetIndustryGfx(tile);
rubidium@7725: 	const IndustryTileSpec *itspec = GetIndustryTileSpec(gfx);
rubidium@7725: 
skidd13@8424: 	if (!HasBit(itspec->animation_triggers, iat)) return false;
rubidium@7725: 
rubidium@7725: 	Industry *ind = GetIndustryByTile(tile);
rubidium@7725: 	ChangeIndustryTileAnimationFrame(tile, iat, random, gfx, ind);
rubidium@7725: 	return true;
rubidium@7725: }
rubidium@7725: 
rubidium@7725: bool StartStopIndustryTileAnimation(const Industry *ind, IndustryAnimationTrigger iat)
rubidium@7725: {
rubidium@7725: 	bool ret = true;
rubidium@7725: 	uint32 random = Random();
rubidium@7725: 	BEGIN_TILE_LOOP(tile, ind->width, ind->height, ind->xy)
rubidium@7725: 		if (IsTileType(tile, MP_INDUSTRY) && GetIndustryIndex(tile) == ind->index) {
rubidium@8123: 			if (StartStopIndustryTileAnimation(tile, iat, random)) {
rubidium@8123: 				SB(random, 0, 16, Random());
rubidium@8123: 			} else {
rubidium@8123: 				ret = false;
rubidium@8123: 			}
rubidium@7725: 		}
rubidium@7725: 	END_TILE_LOOP(tile, ind->width, ind->height, ind->xy)
rubidium@7725: 
rubidium@7725: 	return ret;
rubidium@7725: }
rubidium@8356: 
rubidium@8356: static void DoTriggerIndustryTile(TileIndex tile, IndustryTileTrigger trigger, Industry *ind)
rubidium@8356: {
rubidium@8356: 	ResolverObject object;
rubidium@8356: 
rubidium@8356: 	IndustryGfx gfx = GetIndustryGfx(tile);
rubidium@8356: 	const IndustryTileSpec *itspec = GetIndustryTileSpec(gfx);
rubidium@8356: 
rubidium@10323: 	if (itspec->grf_prop.spritegroup == NULL) return;
rubidium@10323: 
rubidium@8356: 	NewIndustryTileResolver(&object, gfx, tile, ind);
rubidium@8356: 
rubidium@8356: 	object.callback = CBID_RANDOM_TRIGGER;
rubidium@8356: 	object.trigger = trigger;
rubidium@8356: 
rubidium@8356: 	const SpriteGroup *group = Resolve(itspec->grf_prop.spritegroup, &object);
rubidium@8356: 	if (group == NULL) return;
rubidium@8356: 
rubidium@8356: 	byte new_random_bits = Random();
rubidium@8356: 	byte random_bits = GetIndustryRandomBits(tile);
rubidium@8356: 	random_bits &= ~object.reseed;
rubidium@8356: 	random_bits |= new_random_bits & object.reseed;
rubidium@8356: 	SetIndustryRandomBits(tile, random_bits);
rubidium@8356: }
rubidium@8356: 
rubidium@8356: void TriggerIndustryTile(TileIndex tile, IndustryTileTrigger trigger)
rubidium@8356: {
rubidium@8356: 	DoTriggerIndustryTile(tile, trigger, GetIndustryByTile(tile));
rubidium@8356: }
rubidium@8356: 
rubidium@8356: void TriggerIndustry(Industry *ind, IndustryTileTrigger trigger)
rubidium@8356: {
rubidium@8356: 	BEGIN_TILE_LOOP(tile, ind->width, ind->height, ind->xy)
rubidium@8356: 		if (IsTileType(tile, MP_INDUSTRY) && GetIndustryIndex(tile) == ind->index) {
rubidium@8356: 			DoTriggerIndustryTile(tile, trigger, ind);
rubidium@8356: 		}
rubidium@8356: 	END_TILE_LOOP(tile, ind->width, ind->height, ind->xy)
rubidium@8356: }