rubidium@9628: /* $Id$ */
rubidium@9628: 
rubidium@10455: /** @file newgrf_industrytiles.cpp NewGRF handling of industry tiles. */
rubidium@9628: 
rubidium@9628: #include "stdafx.h"
rubidium@9628: #include "openttd.h"
rubidium@9628: #include "variables.h"
rubidium@9628: #include "debug.h"
rubidium@9723: #include "viewport_func.h"
rubidium@9628: #include "landscape.h"
rubidium@9628: #include "newgrf.h"
rubidium@9628: #include "industry.h"
rubidium@9628: #include "newgrf_commons.h"
rubidium@9628: #include "newgrf_spritegroup.h"
rubidium@9628: #include "newgrf_callbacks.h"
rubidium@9628: #include "newgrf_industries.h"
truelight@9641: #include "newgrf_industrytiles.h"
glx@10294: #include "newgrf_sound.h"
truelight@9641: #include "newgrf_text.h"
rubidium@9628: #include "industry_map.h"
rubidium@9628: #include "clear_map.h"
rubidium@9628: #include "sprite.h"
rubidium@9722: #include "transparency.h"
rubidium@9723: #include "functions.h"
rubidium@9723: #include "town.h"
rubidium@9724: #include "command_func.h"
glx@10294: #include "animated_tile_func.h"
rubidium@9724: 
rubidium@9724: #include "table/sprites.h"
rubidium@9724: #include "table/strings.h"
rubidium@9723: 
rubidium@9723: static uint32 GetGRFParameter(IndustryGfx indtile_id, byte parameter)
rubidium@9723: {
rubidium@9723: 	const IndustryTileSpec *indtspec = GetIndustryTileSpec(indtile_id);
rubidium@9723: 	const GRFFile *file = indtspec->grf_prop.grffile;
rubidium@9723: 
rubidium@9723: 	if (parameter >= file->param_end) return 0;
rubidium@9723: 	return file->param[parameter];
rubidium@9723: }
rubidium@9628: 
rubidium@9628: /**
rubidium@9628:  * Based on newhouses equivalent, but adapted for newindustries
rubidium@9628:  * @param parameter from callback.  It's in fact a pair of coordinates
rubidium@9628:  * @param tile TileIndex from which the callback was initiated
rubidium@9628:  * @param index of the industry been queried for
rubidium@9628:  * @return a construction of bits obeying the newgrf format
rubidium@9628:  */
truelight@9641: uint32 GetNearbyIndustryTileInformation(byte parameter, TileIndex tile, IndustryID index)
rubidium@9628: {
rubidium@9701: 	if (parameter != 0) tile = GetNearbyTile(parameter, tile); // only perform if it is required
rubidium@9724: 	bool is_same_industry = (IsTileType(tile, MP_INDUSTRY) && GetIndustryIndex(tile) == index);
rubidium@9628: 
rubidium@9724: 	return GetNearbyTileInformation(tile) | (is_same_industry ? 1 : 0) << 8;
rubidium@9628: }
rubidium@9628: 
rubidium@9628: /** This is the position of the tile relative to the northernmost tile of the industry.
rubidium@9628:  * Format: 00yxYYXX
rubidium@9628:  * Variable  Content
rubidium@9628:  * x         the x offset from the northernmost tile
rubidium@9628:  * XX        same, but stored in a byte instead of a nibble
rubidium@9628:  * y         the y offset from the northernmost tile
rubidium@9628:  * YY        same, but stored in a byte instead of a nibble
rubidium@9628:  * @param tile TileIndex of the tile to evaluate
rubidium@9628:  * @param ind_tile northernmost tile of the industry
rubidium@9628:  */
rubidium@9628: static uint32 GetRelativePosition(TileIndex tile, TileIndex ind_tile)
rubidium@9628: {
rubidium@9628: 	byte x = TileX(tile) - TileX(ind_tile);
rubidium@9628: 	byte y = TileY(tile) - TileY(ind_tile);
rubidium@9628: 
rubidium@9628: 	return ((y & 0xF) << 20) | ((x & 0xF) << 16) | (y << 8) | x;
rubidium@9628: }
rubidium@9628: 
rubidium@9628: static uint32 IndustryTileGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available)
rubidium@9628: {
rubidium@9628: 	const Industry *inds = object->u.industry.ind;
rubidium@9628: 	TileIndex tile       = object->u.industry.tile;
rubidium@9628: 
rubidium@9628: 	if (object->scope == VSG_SCOPE_PARENT) {
rubidium@9628: 		return IndustryGetVariable(object, variable, parameter, available);
rubidium@9628: 	}
rubidium@9628: 
rubidium@9628: 	switch (variable) {
rubidium@9628: 		 /* Construction state of the tile: a value between 0 and 3 */
rubidium@9628: 		case 0x40 : return (IsTileType(tile, MP_INDUSTRY)) ? GetIndustryConstructionStage(tile) : 0;
rubidium@9628: 
rubidium@9628: 		case 0x41 : return GetTerrainType(tile);
rubidium@9628: 
rubidium@9628: 		/* Current town zone of the tile in the nearest town */
rubidium@9628: 		case 0x42 : return GetTownRadiusGroup(ClosestTownFromTile(tile, (uint)-1), tile);
rubidium@9628: 
rubidium@9628: 		/* Relative position */
rubidium@9628: 		case 0x43 : return GetRelativePosition(tile, inds->xy);
rubidium@9628: 
rubidium@9628: 		/* Animation frame. Like house variable 46 but can contain anything 0..FF. */
rubidium@9628: 		case 0x44 : return (IsTileType(tile, MP_INDUSTRY)) ? GetIndustryAnimationState(tile) : 0;
rubidium@9628: 
rubidium@9628: 		/* Land info of nearby tiles */
truelight@9641: 		case 0x60 : return GetNearbyIndustryTileInformation(parameter, tile, inds == NULL ? (IndustryID)INVALID_INDUSTRY : inds->index);
rubidium@9628: 
truelight@9641: 		/* Animation stage of nearby tiles */
truelight@9641: 		case 0x61 : {
rubidium@9628: 			tile = GetNearbyTile(parameter, tile);
rubidium@9628: 			if (IsTileType(tile, MP_INDUSTRY) && GetIndustryByTile(tile) == inds) {
rubidium@9628: 				return GetIndustryAnimationState(tile);
rubidium@9628: 			}
rubidium@9628: 			return 0xFFFFFFFF;
rubidium@9628: 		}
rubidium@9628: 
rubidium@9628: 		/* Get industry tile ID at offset */
glx@9704: 		case 0x62 : return GetIndustryIDAtOffset(GetNearbyTile(parameter, tile), inds);
rubidium@9723: 
rubidium@9723: 		/* Read GRF parameter */
rubidium@9723: 		case 0x7F: return GetGRFParameter(GetIndustryGfx(tile), parameter);
rubidium@9628: 	}
rubidium@9628: 
truelight@9641: 	DEBUG(grf, 1, "Unhandled industry tile property 0x%X", variable);
truelight@9641: 
truelight@9641: 	*available = false;
truelight@9641: 	return (uint32)-1;
rubidium@9628: }
rubidium@9628: 
rubidium@9628: static const SpriteGroup *IndustryTileResolveReal(const ResolverObject *object, const SpriteGroup *group)
rubidium@9628: {
rubidium@9628: 	/* IndustryTile do not have 'real' groups.  Or do they?? */
rubidium@9628: 	return NULL;
rubidium@9628: }
rubidium@9628: 
glx@9704: static uint32 IndustryTileGetRandomBits(const ResolverObject *object)
rubidium@9628: {
rubidium@9628: 	const TileIndex tile = object->u.industry.tile;
glx@9704: 	if (tile == INVALID_TILE || !IsTileType(tile, MP_INDUSTRY)) return 0;
rubidium@9722: 	return (object->scope == VSG_SCOPE_SELF) ? GetIndustryRandomBits(tile) : GetIndustryByTile(tile)->random;
rubidium@9628: }
rubidium@9628: 
glx@9704: static uint32 IndustryTileGetTriggers(const ResolverObject *object)
rubidium@9628: {
rubidium@9628: 	const TileIndex tile = object->u.industry.tile;
glx@9704: 	if (tile == INVALID_TILE || !IsTileType(tile, MP_INDUSTRY)) return 0;
rubidium@9722: 	return (object->scope == VSG_SCOPE_SELF) ? GetIndustryTriggers(tile) : GetIndustryByTile(tile)->random_triggers;
rubidium@9628: }
rubidium@9628: 
glx@9704: static void IndustryTileSetTriggers(const ResolverObject *object, int triggers)
rubidium@9628: {
rubidium@9628: 	const TileIndex tile = object->u.industry.tile;
glx@9704: 	if (tile == INVALID_TILE || !IsTileType(tile, MP_INDUSTRY)) return;
glx@9704: 
rubidium@9722: 	if (object->scope == VSG_SCOPE_SELF) {
glx@9704: 		SetIndustryTriggers(tile, triggers);
glx@9704: 	} else {
rubidium@9722: 		GetIndustryByTile(tile)->random_triggers = triggers;
glx@9704: 	}
rubidium@9628: }
rubidium@9628: 
rubidium@9628: static void NewIndustryTileResolver(ResolverObject *res, IndustryGfx gfx, TileIndex tile, Industry *indus)
rubidium@9628: {
rubidium@9628: 	res->GetRandomBits = IndustryTileGetRandomBits;
rubidium@9628: 	res->GetTriggers   = IndustryTileGetTriggers;
rubidium@9628: 	res->SetTriggers   = IndustryTileSetTriggers;
rubidium@9628: 	res->GetVariable   = IndustryTileGetVariable;
rubidium@9628: 	res->ResolveReal   = IndustryTileResolveReal;
rubidium@9628: 
rubidium@9703: 	res->psa             = &indus->psa;
rubidium@9628: 	res->u.industry.tile = tile;
rubidium@9628: 	res->u.industry.ind  = indus;
rubidium@9628: 	res->u.industry.gfx  = gfx;
rubidium@9724: 	res->u.industry.type = indus->type;
rubidium@9628: 
rubidium@9694: 	res->callback        = CBID_NO_CALLBACK;
rubidium@9628: 	res->callback_param1 = 0;
rubidium@9628: 	res->callback_param2 = 0;
rubidium@9628: 	res->last_value      = 0;
rubidium@9628: 	res->trigger         = 0;
rubidium@9628: 	res->reseed          = 0;
rubidium@9826: 	res->count           = 0;
rubidium@9628: }
rubidium@9628: 
glx@9629: void IndustryDrawTileLayout(const TileInfo *ti, const SpriteGroup *group, byte rnd_color, byte stage, IndustryGfx gfx)
glx@9629: {
glx@9629: 	const DrawTileSprites *dts = group->g.layout.dts;
glx@9629: 	const DrawTileSeqStruct *dtss;
glx@9629: 
glx@9732: 	SpriteID image = dts->ground.sprite;
glx@9732: 	SpriteID pal   = dts->ground.pal;
glx@9629: 
glx@9704: 	if (IS_CUSTOM_SPRITE(image)) image += stage;
glx@9704: 
glx@9629: 	if (GB(image, 0, SPRITE_WIDTH) != 0) DrawGroundSprite(image, pal);
glx@9629: 
glx@9629: 	foreach_draw_tile_seq(dtss, dts->seq) {
glx@9732: 		if (GB(dtss->image.sprite, 0, SPRITE_WIDTH) == 0) continue;
glx@9629: 
glx@9732: 		image = dtss->image.sprite;
glx@9732: 		pal   = dtss->image.pal;
glx@9629: 
rubidium@11044: 		/* Stop drawing sprite sequence once we meet a sprite that doesn't have to be opaque */
rubidium@11044: 		if (IsInvisibilitySet(TO_INDUSTRIES) && !HasBit(image, SPRITE_MODIFIER_OPAQUE)) return;
rubidium@11044: 
glx@9704: 		if (IS_CUSTOM_SPRITE(image)) image += stage;
glx@9704: 
rubidium@9722: 		if (HasBit(image, PALETTE_MODIFIER_COLOR)) {
rubidium@9722: 			if (pal == 0) {
rubidium@9722: 				pal = GENERAL_SPRITE_COLOR(rnd_color);
rubidium@9722: 			}
glx@9629: 		} else {
glx@9629: 			pal = PAL_NONE;
glx@9629: 		}
glx@9629: 
glx@9629: 		if ((byte)dtss->delta_z != 0x80) {
glx@9629: 			AddSortableSpriteToDraw(
glx@9629: 				image, pal,
glx@9629: 				ti->x + dtss->delta_x, ti->y + dtss->delta_y,
glx@9629: 				dtss->size_x, dtss->size_y,
rubidium@9694: 				dtss->size_z, ti->z + dtss->delta_z,
rubidium@9722: 				!HasBit(image, SPRITE_MODIFIER_OPAQUE) && IsTransparencySet(TO_INDUSTRIES)
glx@9629: 			);
glx@9629: 		} else {
rubidium@9722: 			AddChildSpriteScreen(image, pal, (byte)dtss->delta_x, (byte)dtss->delta_y, IsTransparencySet(TO_INDUSTRIES));
glx@9629: 		}
glx@9629: 	}
glx@9629: }
glx@9629: 
rubidium@9694: uint16 GetIndustryTileCallback(CallbackID callback, uint32 param1, uint32 param2, IndustryGfx gfx_id, Industry *industry, TileIndex tile)
rubidium@9628: {
rubidium@9628: 	ResolverObject object;
rubidium@9628: 	const SpriteGroup *group;
rubidium@9628: 
rubidium@9628: 	NewIndustryTileResolver(&object, gfx_id, tile, industry);
rubidium@9628: 	object.callback = callback;
rubidium@9628: 	object.callback_param1 = param1;
rubidium@9628: 	object.callback_param2 = param2;
rubidium@9628: 
rubidium@9628: 	group = Resolve(GetIndustryTileSpec(gfx_id)->grf_prop.spritegroup, &object);
rubidium@9628: 	if (group == NULL || group->type != SGT_CALLBACK) return CALLBACK_FAILED;
rubidium@9628: 
rubidium@9628: 	return group->g.callback.result;
rubidium@9628: }
glx@9629: 
glx@9629: bool DrawNewIndustryTile(TileInfo *ti, Industry *i, IndustryGfx gfx, const IndustryTileSpec *inds)
glx@9629: {
glx@9629: 	const SpriteGroup *group;
glx@9629: 	ResolverObject object;
glx@9629: 
glx@9629: 	if (ti->tileh != SLOPE_FLAT) {
glx@9629: 		bool draw_old_one = true;
rubidium@9722: 		if (HasBit(inds->callback_flags, CBM_INDT_DRAW_FOUNDATIONS)) {
glx@9629: 			/* Called to determine the type (if any) of foundation to draw for industry tile */
glx@9629: 			uint32 callback_res = GetIndustryTileCallback(CBID_INDUSTRY_DRAW_FOUNDATIONS, 0, 0, gfx, i, ti->tile);
truelight@9641: 			draw_old_one = callback_res != 0;
glx@9629: 		}
glx@9629: 
rubidium@9694: 		if (draw_old_one) DrawFoundation(ti, FOUNDATION_LEVELED);
glx@9629: 	}
glx@9629: 
glx@9629: 	NewIndustryTileResolver(&object, gfx, ti->tile, i);
glx@9629: 
glx@9629: 	group = Resolve(inds->grf_prop.spritegroup, &object);
glx@9629: 	if (group == NULL || group->type != SGT_TILELAYOUT) {
glx@9629: 		return false;
glx@9629: 	} else {
glx@9629: 		/* Limit the building stage to the number of stages supplied. */
glx@9629: 		byte stage = GetIndustryConstructionStage(ti->tile);
rubidium@9722: 		stage = Clamp(stage - 4 + group->g.layout.num_sprites, 0, group->g.layout.num_sprites - 1);
glx@9629: 		IndustryDrawTileLayout(ti, group, i->random_color, stage, gfx);
glx@9629: 		return true;
glx@9629: 	}
glx@9629: }
truelight@9641: 
glx@9704: extern bool IsSlopeRefused(Slope current, Slope refused);
glx@9704: 
glx@9704: bool PerformIndustryTileSlopeCheck(TileIndex ind_base_tile, TileIndex ind_tile, const IndustryTileSpec *its, IndustryType type, IndustryGfx gfx, uint itspec_index)
truelight@9641: {
truelight@9641: 	Industry ind;
glx@9704: 	ind.index = INVALID_INDUSTRY;
glx@9704: 	ind.xy = ind_base_tile;
rubidium@9701: 	ind.width = 0;
truelight@9641: 	ind.type = type;
truelight@9641: 
glx@9704: 	uint16 callback_res = GetIndustryTileCallback(CBID_INDTILE_SHAPE_CHECK, 0, itspec_index, gfx, &ind, ind_tile);
glx@9704: 	if (callback_res == CALLBACK_FAILED) {
glx@9704: 		return !IsSlopeRefused(GetTileSlope(ind_tile, NULL), its->slopes_refused);
glx@9704: 	}
truelight@9641: 	if (its->grf_prop.grffile->grf_version < 7) {
rubidium@10249: 		return callback_res != 0;
truelight@9641: 	}
truelight@9641: 
truelight@9718: 	/* Copy some parameters from the registers to the error message text ref. stack */
truelight@9718: 	SwitchToErrorRefStack();
truelight@9718: 	PrepareTextRefStackUsage(4);
truelight@9718: 	SwitchToNormalRefStack();
truelight@9718: 
truelight@9641: 	switch (callback_res) {
truelight@9641: 		case 0x400: return true;
truelight@9641: 		case 0x401: _error_message = STR_0239_SITE_UNSUITABLE;                 return false;
truelight@9641: 		case 0x402: _error_message = STR_0317_CAN_ONLY_BE_BUILT_IN_RAINFOREST; return false;
truelight@9641: 		case 0x403: _error_message = STR_0318_CAN_ONLY_BE_BUILT_IN_DESERT;     return false;
truelight@9641: 		default: _error_message = GetGRFStringID(its->grf_prop.grffile->grfid, 0xD000 + callback_res); return false;
truelight@9641: 	}
truelight@9641: }
truelight@9641: 
truelight@9641: void AnimateNewIndustryTile(TileIndex tile)
truelight@9641: {
truelight@9641: 	Industry *ind = GetIndustryByTile(tile);
truelight@9641: 	IndustryGfx gfx = GetIndustryGfx(tile);
truelight@9641: 	const IndustryTileSpec *itspec = GetIndustryTileSpec(gfx);
truelight@9641: 	byte animation_speed = itspec->animation_speed;
truelight@9641: 
rubidium@9722: 	if (HasBit(itspec->callback_flags, CBM_INDT_ANIM_SPEED)) {
truelight@9641: 		uint16 callback_res = GetIndustryTileCallback(CBID_INDTILE_ANIMATION_SPEED, 0, 0, gfx, ind, tile);
rubidium@9722: 		if (callback_res != CALLBACK_FAILED) animation_speed = Clamp(callback_res & 0xFF, 0, 16);
truelight@9641: 	}
truelight@9641: 
truelight@9641: 	/* An animation speed of 2 means the animation frame changes 4 ticks, and
truelight@9641: 	 * increasing this value by one doubles the wait. 0 is the minimum value
truelight@9641: 	 * allowed for animation_speed, which corresponds to 30ms, and 16 is the
truelight@9641: 	 * maximum, corresponding to around 33 minutes. */
truelight@9641: 	if ((_tick_counter % (1 << animation_speed)) != 0) return;
truelight@9641: 
truelight@9641: 	bool frame_set_by_callback = false;
truelight@9641: 	byte frame = GetIndustryAnimationState(tile);
truelight@9718: 	uint16 num_frames = GB(itspec->animation_info, 0, 8);
truelight@9641: 
rubidium@9722: 	if (HasBit(itspec->callback_flags, CBM_INDT_ANIM_NEXT_FRAME)) {
rubidium@9722: 		uint16 callback_res = GetIndustryTileCallback(CBID_INDTILE_ANIM_NEXT_FRAME, HasBit(itspec->animation_special_flags, 0) ? Random() : 0, 0, gfx, ind, tile);
truelight@9641: 
truelight@9641: 		if (callback_res != CALLBACK_FAILED) {
truelight@9641: 			frame_set_by_callback = true;
truelight@9641: 
truelight@9641: 			switch (callback_res & 0xFF) {
truelight@9641: 				case 0xFF:
truelight@9641: 					DeleteAnimatedTile(tile);
truelight@9641: 					break;
truelight@9641: 				case 0xFE:
truelight@9641: 					/* Carry on as normal. */
truelight@9641: 					frame_set_by_callback = false;
truelight@9641: 					break;
truelight@9641: 				default:
truelight@9641: 					frame = callback_res & 0xFF;
truelight@9641: 					break;
truelight@9641: 			}
glx@10294: 
glx@10294: 			/* If the lower 7 bits of the upper byte of the callback
glx@10294: 			 * result are not empty, it is a sound effect. */
glx@10294: 			if (GB(callback_res, 8, 7) != 0) PlayTileSound(itspec->grf_prop.grffile, GB(callback_res, 8, 7), tile);
truelight@9641: 		}
truelight@9641: 	}
truelight@9641: 
truelight@9641: 	if (!frame_set_by_callback) {
truelight@9641: 		if (frame < num_frames) {
truelight@9641: 			frame++;
truelight@9641: 		} else if (frame == num_frames && GB(itspec->animation_info, 8, 8) == 1) {
truelight@9641: 			/* This animation loops, so start again from the beginning */
truelight@9641: 			frame = 0;
truelight@9641: 		} else {
truelight@9641: 			/* This animation doesn't loop, so stay here */
truelight@9641: 			DeleteAnimatedTile(tile);
truelight@9641: 		}
truelight@9641: 	}
truelight@9641: 
truelight@9641: 	SetIndustryAnimationState(tile, frame);
truelight@9641: 	MarkTileDirtyByTile(tile);
truelight@9641: }
truelight@9641: 
glx@10294: static void ChangeIndustryTileAnimationFrame(const IndustryTileSpec *itspec, TileIndex tile, IndustryAnimationTrigger iat, uint32 random_bits, IndustryGfx gfx, Industry *ind)
truelight@9641: {
truelight@9641: 	uint16 callback_res = GetIndustryTileCallback(CBID_INDTILE_ANIM_START_STOP, random_bits, iat, gfx, ind, tile);
truelight@9641: 	if (callback_res == CALLBACK_FAILED) return;
truelight@9641: 
truelight@9641: 	switch (callback_res & 0xFF) {
truelight@9641: 		case 0xFD: /* Do nothing. */         break;
truelight@9641: 		case 0xFE: AddAnimatedTile(tile);    break;
truelight@9641: 		case 0xFF: DeleteAnimatedTile(tile); break;
truelight@9641: 		default:
truelight@9641: 			SetIndustryAnimationState(tile, callback_res & 0xFF);
truelight@9641: 			AddAnimatedTile(tile);
truelight@9641: 			break;
truelight@9641: 	}
glx@10294: 
glx@10294: 	/* If the lower 7 bits of the upper byte of the callback
glx@10294: 	 * result are not empty, it is a sound effect. */
glx@10294: 	if (GB(callback_res, 8, 7) != 0) PlayTileSound(itspec->grf_prop.grffile, GB(callback_res, 8, 7), tile);
truelight@9641: }
truelight@9641: 
truelight@9641: bool StartStopIndustryTileAnimation(TileIndex tile, IndustryAnimationTrigger iat, uint32 random)
truelight@9641: {
truelight@9641: 	IndustryGfx gfx = GetIndustryGfx(tile);
truelight@9641: 	const IndustryTileSpec *itspec = GetIndustryTileSpec(gfx);
truelight@9641: 
rubidium@9722: 	if (!HasBit(itspec->animation_triggers, iat)) return false;
truelight@9641: 
truelight@9641: 	Industry *ind = GetIndustryByTile(tile);
glx@10294: 	ChangeIndustryTileAnimationFrame(itspec, tile, iat, random, gfx, ind);
truelight@9641: 	return true;
truelight@9641: }
truelight@9641: 
truelight@9641: bool StartStopIndustryTileAnimation(const Industry *ind, IndustryAnimationTrigger iat)
truelight@9641: {
truelight@9641: 	bool ret = true;
truelight@9641: 	uint32 random = Random();
truelight@9641: 	BEGIN_TILE_LOOP(tile, ind->width, ind->height, ind->xy)
truelight@9641: 		if (IsTileType(tile, MP_INDUSTRY) && GetIndustryIndex(tile) == ind->index) {
glx@9704: 			if (StartStopIndustryTileAnimation(tile, iat, random)) {
glx@9704: 				SB(random, 0, 16, Random());
glx@9704: 			} else {
glx@9704: 				ret = false;
glx@9704: 			}
truelight@9641: 		}
truelight@9641: 	END_TILE_LOOP(tile, ind->width, ind->height, ind->xy)
truelight@9641: 
truelight@9641: 	return ret;
truelight@9641: }
rubidium@9722: 
rubidium@9722: static void DoTriggerIndustryTile(TileIndex tile, IndustryTileTrigger trigger, Industry *ind)
rubidium@9722: {
rubidium@9722: 	ResolverObject object;
rubidium@9722: 
rubidium@9722: 	IndustryGfx gfx = GetIndustryGfx(tile);
rubidium@9722: 	const IndustryTileSpec *itspec = GetIndustryTileSpec(gfx);
rubidium@9722: 
rubidium@10355: 	if (itspec->grf_prop.spritegroup == NULL) return;
rubidium@10355: 
rubidium@9722: 	NewIndustryTileResolver(&object, gfx, tile, ind);
rubidium@9722: 
rubidium@9722: 	object.callback = CBID_RANDOM_TRIGGER;
rubidium@9722: 	object.trigger = trigger;
rubidium@9722: 
rubidium@9722: 	const SpriteGroup *group = Resolve(itspec->grf_prop.spritegroup, &object);
rubidium@9722: 	if (group == NULL) return;
rubidium@9722: 
rubidium@9722: 	byte new_random_bits = Random();
rubidium@9722: 	byte random_bits = GetIndustryRandomBits(tile);
rubidium@9722: 	random_bits &= ~object.reseed;
rubidium@9722: 	random_bits |= new_random_bits & object.reseed;
rubidium@9722: 	SetIndustryRandomBits(tile, random_bits);
rubidium@9722: }
rubidium@9722: 
rubidium@9722: void TriggerIndustryTile(TileIndex tile, IndustryTileTrigger trigger)
rubidium@9722: {
rubidium@9722: 	DoTriggerIndustryTile(tile, trigger, GetIndustryByTile(tile));
rubidium@9722: }
rubidium@9722: 
rubidium@9722: void TriggerIndustry(Industry *ind, IndustryTileTrigger trigger)
rubidium@9722: {
rubidium@9722: 	BEGIN_TILE_LOOP(tile, ind->width, ind->height, ind->xy)
rubidium@9722: 		if (IsTileType(tile, MP_INDUSTRY) && GetIndustryIndex(tile) == ind->index) {
rubidium@9722: 			DoTriggerIndustryTile(tile, trigger, ind);
rubidium@9722: 		}
rubidium@9722: 	END_TILE_LOOP(tile, ind->width, ind->height, ind->xy)
rubidium@9722: }