tron@2186: /* $Id$ */
tron@2186: 
truelight@1542: #include "stdafx.h"
Darkvater@1891: #include "openttd.h"
truelight@1542: 
truelight@1542: #include "command.h"
tron@2163: #include "functions.h"
truelight@1542: #include "gfx.h"
truelight@1542: #include "map.h"
truelight@1542: #include "order.h"
truelight@1542: #include "saveload.h"
truelight@1542: #include "station.h"
truelight@1542: #include "tile.h"
truelight@1542: #include "town.h"
truelight@1542: #include "waypoint.h"
tron@2159: #include "variables.h"
peter1138@2546: #include "pbs.h"
truelight@1542: #include "table/sprites.h"
truelight@1542: #include "table/strings.h"
truelight@1542: 
truelight@1542: enum {
truelight@1542: 	/* Max waypoints: 64000 (8 * 8000) */
truelight@1542: 	WAYPOINT_POOL_BLOCK_SIZE_BITS = 3,       /* In bits, so (1 << 3) == 8 */
truelight@1542: 	WAYPOINT_POOL_MAX_BLOCKS      = 8000,
truelight@1542: 
truelight@1542: 	MAX_WAYPOINTS_PER_TOWN        = 64,
truelight@1542: };
truelight@1542: 
truelight@1542: /**
truelight@1542:  * Called if a new block is added to the waypoint-pool
truelight@1542:  */
truelight@1542: static void WaypointPoolNewBlock(uint start_item)
truelight@1542: {
truelight@1542: 	Waypoint *wp;
truelight@1542: 
truelight@1542: 	FOR_ALL_WAYPOINTS_FROM(wp, start_item)
truelight@1542: 		wp->index = start_item++;
truelight@1542: }
truelight@1542: 
truelight@1542: /* Initialize the town-pool */
truelight@1542: MemoryPool _waypoint_pool = { "Waypoints", WAYPOINT_POOL_MAX_BLOCKS, WAYPOINT_POOL_BLOCK_SIZE_BITS, sizeof(Waypoint), &WaypointPoolNewBlock, 0, 0, NULL };
truelight@1542: 
truelight@1542: /* Create a new waypoint */
tron@2752: static Waypoint* AllocateWaypoint(void)
truelight@1542: {
truelight@1542: 	Waypoint *wp;
truelight@1542: 
truelight@1542: 	FOR_ALL_WAYPOINTS(wp) {
truelight@1542: 		if (wp->xy == 0) {
truelight@1542: 			uint index = wp->index;
truelight@1542: 
truelight@1542: 			memset(wp, 0, sizeof(Waypoint));
truelight@1542: 			wp->index = index;
truelight@1542: 
truelight@1542: 			return wp;
truelight@1542: 		}
truelight@1542: 	}
truelight@1542: 
truelight@1542: 	/* Check if we can add a block to the pool */
truelight@1542: 	if (AddBlockToPool(&_waypoint_pool))
truelight@1542: 		return AllocateWaypoint();
truelight@1542: 
truelight@1542: 	return NULL;
truelight@1542: }
truelight@1542: 
truelight@1542: /* Update the sign for the waypoint */
tron@2817: static void UpdateWaypointSign(Waypoint* wp)
truelight@1542: {
truelight@1542: 	Point pt = RemapCoords2(TileX(wp->xy) * 16, TileY(wp->xy) * 16);
truelight@1542: 	SetDParam(0, wp->index);
truelight@1542: 	UpdateViewportSignPos(&wp->sign, pt.x, pt.y - 0x20, STR_WAYPOINT_VIEWPORT);
truelight@1542: }
truelight@1542: 
truelight@1542: /* Redraw the sign of a waypoint */
tron@2752: static void RedrawWaypointSign(const Waypoint* wp)
truelight@1542: {
truelight@1542: 	MarkAllViewportsDirty(
truelight@1542: 		wp->sign.left - 6,
truelight@1542: 		wp->sign.top,
truelight@1542: 		wp->sign.left + (wp->sign.width_1 << 2) + 12,
truelight@1542: 		wp->sign.top + 48);
truelight@1542: }
truelight@1542: 
truelight@1542: /* Update all signs */
truelight@1542: void UpdateAllWaypointSigns(void)
truelight@1542: {
truelight@1542: 	Waypoint *wp;
truelight@1542: 
truelight@1542: 	FOR_ALL_WAYPOINTS(wp) {
truelight@1542: 		if (wp->xy)
truelight@1542: 			UpdateWaypointSign(wp);
truelight@1542: 	}
truelight@1542: }
truelight@1542: 
truelight@1542: /* Set the default name for a waypoint */
tron@2752: static void MakeDefaultWaypointName(Waypoint* wp)
truelight@1542: {
truelight@1542: 	Waypoint *local_wp;
truelight@1542: 	bool used_waypoint[MAX_WAYPOINTS_PER_TOWN];
truelight@1542: 	int i;
truelight@1542: 
truelight@1542: 	wp->town_index = ClosestTownFromTile(wp->xy, (uint)-1)->index;
truelight@1542: 
truelight@1542: 	memset(used_waypoint, 0, sizeof(used_waypoint));
truelight@1542: 
truelight@1542: 	/* Find an unused waypoint number belonging to this town */
truelight@1542: 	FOR_ALL_WAYPOINTS(local_wp) {
truelight@1542: 		if (wp == local_wp)
truelight@1542: 			continue;
truelight@1542: 
truelight@1542: 		if (local_wp->xy && local_wp->string == STR_NULL && local_wp->town_index == wp->town_index)
truelight@1542: 			used_waypoint[local_wp->town_cn] = true;
truelight@1542: 	}
truelight@1542: 
truelight@1542: 	/* Find an empty spot */
truelight@1542: 	for (i = 0; used_waypoint[i] && i < MAX_WAYPOINTS_PER_TOWN; i++) {}
truelight@1542: 
truelight@1542: 	wp->string = STR_NULL;
truelight@1542: 	wp->town_cn = i;
truelight@1542: }
truelight@1542: 
truelight@1542: /* Find a deleted waypoint close to a tile. */
tron@1977: static Waypoint *FindDeletedWaypointCloseTo(TileIndex tile)
truelight@1542: {
truelight@1542: 	Waypoint *wp, *best = NULL;
truelight@1542: 	uint thres = 8, cur_dist;
truelight@1542: 
truelight@1542: 	FOR_ALL_WAYPOINTS(wp) {
truelight@1542: 		if (wp->deleted && wp->xy) {
truelight@1542: 			cur_dist = DistanceManhattan(tile, wp->xy);
truelight@1542: 			if (cur_dist < thres) {
truelight@1542: 				thres = cur_dist;
truelight@1542: 				best = wp;
truelight@1542: 			}
truelight@1542: 		}
truelight@1542: 	}
truelight@1542: 
truelight@1542: 	return best;
truelight@1542: }
truelight@1542: 
peter1138@2670: /**
peter1138@2670:  * Update waypoint graphics id against saved GRFID/localidx.
peter1138@2670:  * This is to ensure the chosen graphics are correct if GRF files are changed.
peter1138@2670:  */
peter1138@2670: void UpdateAllWaypointCustomGraphics(void)
peter1138@2670: {
peter1138@2670: 	Waypoint *wp;
peter1138@2670: 
peter1138@2670: 	FOR_ALL_WAYPOINTS(wp) {
peter1138@2670: 		uint i;
peter1138@2670: 
peter1138@2670: 		if (wp->grfid == 0) continue;
peter1138@2670: 
peter1138@2670: 		for (i = 0; i < GetNumCustomStations(STAT_CLASS_WAYP); i++) {
peter1138@2670: 			const StationSpec *spec = GetCustomStation(STAT_CLASS_WAYP, i);
peter1138@2670: 			if (spec != NULL && spec->grfid == wp->grfid && spec->localidx == wp->localidx) {
peter1138@2670: 				wp->stat_id = i;
peter1138@2670: 				break;
peter1138@2670: 			}
peter1138@2670: 		}
peter1138@2670: 	}
peter1138@2670: }
peter1138@2670: 
Darkvater@1782: /** Convert existing rail to waypoint. Eg build a waypoint station over
Darkvater@1782:  * piece of rail
Darkvater@1782:  * @param x,y coordinates where waypoint will be built
peter1138@2625:  * @param p1 graphics for waypoint type, 0 indicates standard graphics
Darkvater@1782:  * @param p2 unused
celestar@2085:  *
celestar@2085:  * @todo When checking for the tile slope,
celestar@2085:  * distingush between "Flat land required" and "land sloped in wrong direction"
Darkvater@1782:  */
truelight@1542: int32 CmdBuildTrainWaypoint(int x, int y, uint32 flags, uint32 p1, uint32 p2)
truelight@1542: {
tron@1980: 	TileIndex tile = TileVirtXY(x, y);
truelight@1542: 	Waypoint *wp;
truelight@1542: 	uint tileh;
truelight@1542: 	uint dir;
truelight@1542: 
truelight@1542: 	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
truelight@1542: 
Darkvater@1782: 	/* if custom gfx are used, make sure it is within bounds */
peter1138@2625: 	if (p1 >= GetNumCustomStations(STAT_CLASS_WAYP)) return CMD_ERROR;
Darkvater@1782: 
tron@2049: 	if (!IsTileType(tile, MP_RAILWAY) || ((dir = 0, _m[tile].m5 != 1) && (dir = 1, _m[tile].m5 != 2)))
truelight@1542: 		return_cmd_error(STR_1005_NO_SUITABLE_RAILROAD_TRACK);
truelight@1542: 
truelight@1542: 	if (!CheckTileOwnership(tile))
truelight@1542: 		return CMD_ERROR;
truelight@1542: 
truelight@1542: 	if (!EnsureNoVehicle(tile)) return CMD_ERROR;
truelight@1542: 
truelight@1542: 	tileh = GetTileSlope(tile, NULL);
truelight@1542: 	if (tileh != 0) {
celestar@2085: 		if (!_patches.build_on_slopes || IsSteepTileh(tileh) || !(tileh & (0x3 << dir)) || !(tileh & ~(0x3 << dir)))
truelight@1542: 			return_cmd_error(STR_0007_FLAT_LAND_REQUIRED);
truelight@1542: 	}
truelight@1542: 
truelight@1542: 	/* Check if there is an already existing, deleted, waypoint close to us that we can reuse. */
truelight@1542: 	wp = FindDeletedWaypointCloseTo(tile);
truelight@1542: 	if (wp == NULL) {
truelight@1542: 		wp = AllocateWaypoint();
Darkvater@1782: 		if (wp == NULL) return CMD_ERROR;
truelight@1542: 
truelight@1542: 		wp->town_index = 0;
truelight@1542: 		wp->string = STR_NULL;
truelight@1542: 		wp->town_cn = 0;
truelight@1542: 	}
truelight@1542: 
truelight@1542: 	if (flags & DC_EXEC) {
peter1138@2670: 		const StationSpec *spec = NULL;
peter1138@2546: 		bool reserved = PBSTileReserved(tile) != 0;
peter1138@2670: 		ModifyTile(tile, MP_MAP2 | MP_MAP5, wp->index, RAIL_TYPE_WAYPOINT | dir);
peter1138@2670: 
peter1138@2670: 		if (GB(p1, 0, 8) < GetNumCustomStations(STAT_CLASS_WAYP))
peter1138@2670: 			spec = GetCustomStation(STAT_CLASS_WAYP, GB(p1, 0, 8));
peter1138@2670: 
peter1138@2670: 		if (spec != NULL) {
peter1138@2670: 			SETBIT(_m[tile].m3, 4);
peter1138@2670: 			wp->stat_id = GB(p1, 0, 8);
peter1138@2670: 			wp->grfid = spec->grfid;
peter1138@2670: 			wp->localidx = spec->localidx;
peter1138@2670: 		} else {
peter1138@2670: 			// Specified custom graphics do not exist, so use default.
peter1138@2670: 			CLRBIT(_m[tile].m3, 4);
peter1138@2670: 			wp->stat_id = 0;
peter1138@2670: 			wp->grfid = 0;
peter1138@2670: 			wp->localidx = 0;
truelight@1542: 		}
peter1138@2670: 
peter1138@2603: 		if (reserved) {
peter1138@2603: 			PBSReserveTrack(tile, dir);
peter1138@2603: 		} else {
peter1138@2603: 			PBSClearTrack(tile, dir);
peter1138@2603: 		}
truelight@1542: 
truelight@1542: 		wp->deleted = 0;
truelight@1542: 		wp->xy = tile;
truelight@1542: 		wp->build_date = _date;
truelight@1542: 
truelight@1542: 		if (wp->town_index == STR_NULL)
truelight@1542: 			MakeDefaultWaypointName(wp);
truelight@1542: 
truelight@1542: 		UpdateWaypointSign(wp);
truelight@1542: 		RedrawWaypointSign(wp);
truelight@1542: 	}
truelight@1542: 
truelight@1542: 	return _price.build_train_depot;
truelight@1542: }
truelight@1542: 
truelight@1542: /* Internal handler to delete a waypoint */
truelight@1542: static void DoDeleteWaypoint(Waypoint *wp)
truelight@1542: {
truelight@1542: 	Order order;
truelight@1542: 
truelight@1542: 	wp->xy = 0;
truelight@1542: 
truelight@1542: 	order.type = OT_GOTO_WAYPOINT;
truelight@1542: 	order.station = wp->index;
truelight@1542: 	DeleteDestinationFromVehicleOrder(order);
truelight@1542: 
truelight@1542: 	if (wp->string != STR_NULL)
truelight@1542: 		DeleteName(wp->string);
truelight@1542: 
truelight@1542: 	RedrawWaypointSign(wp);
truelight@1542: }
truelight@1542: 
truelight@1542: /* Daily loop for waypoints */
truelight@1542: void WaypointsDailyLoop(void)
truelight@1542: {
truelight@1542: 	Waypoint *wp;
truelight@1542: 
truelight@1542: 	/* Check if we need to delete a waypoint */
truelight@1542: 	FOR_ALL_WAYPOINTS(wp) {
truelight@1542: 		if (wp->deleted && !--wp->deleted) {
truelight@1542: 			DoDeleteWaypoint(wp);
truelight@1542: 		}
truelight@1542: 	}
truelight@1542: }
truelight@1542: 
truelight@1542: /* Remove a waypoint */
tron@1977: int32 RemoveTrainWaypoint(TileIndex tile, uint32 flags, bool justremove)
truelight@1542: {
truelight@1542: 	Waypoint *wp;
truelight@1542: 
truelight@1542: 	/* Make sure it's a waypoint */
truelight@2668: 	if (!IsTileType(tile, MP_RAILWAY) || !IsRailWaypoint(tile))
truelight@1542: 		return CMD_ERROR;
truelight@1542: 
truelight@1542: 	if (!CheckTileOwnership(tile) && !(_current_player == OWNER_WATER))
truelight@1542: 		return CMD_ERROR;
truelight@1542: 
truelight@1542: 	if (!EnsureNoVehicle(tile))
truelight@1542: 		return CMD_ERROR;
truelight@1542: 
truelight@1542: 	if (flags & DC_EXEC) {
tron@2049: 		int direction = _m[tile].m5 & RAIL_WAYPOINT_TRACK_MASK;
truelight@1542: 
truelight@1542: 		wp = GetWaypointByTile(tile);
truelight@1542: 
truelight@1542: 		wp->deleted = 30; // let it live for this many days before we do the actual deletion.
truelight@1542: 		RedrawWaypointSign(wp);
truelight@1542: 
truelight@1542: 		if (justremove) {
peter1138@2546: 			bool reserved = PBSTileReserved(tile) != 0;
peter1138@2670: 			ModifyTile(tile, MP_MAP2_CLEAR | MP_MAP5, 1<<direction);
peter1138@2670: 			CLRBIT(_m[tile].m3, 4);
tron@2049: 			_m[tile].m4 = 0;
peter1138@2603: 			if (reserved) {
peter1138@2603: 				PBSReserveTrack(tile, direction);
peter1138@2603: 			} else {
peter1138@2603: 				PBSClearTrack(tile, direction);
peter1138@2603: 			}
truelight@1542: 		} else {
truelight@1542: 			DoClearSquare(tile);
truelight@1542: 			SetSignalsOnBothDir(tile, direction);
truelight@1542: 		}
truelight@1542: 	}
truelight@1542: 
truelight@1542: 	return _price.remove_train_depot;
truelight@1542: }
truelight@1542: 
Darkvater@1782: /** Delete a waypoint
Darkvater@1782:  * @param x,y coordinates where waypoint is to be deleted
Darkvater@1782:  * @param p1 unused
Darkvater@1782:  * @param p2 unused
Darkvater@1782:  */
truelight@1542: int32 CmdRemoveTrainWaypoint(int x, int y, uint32 flags, uint32 p1, uint32 p2)
truelight@1542: {
tron@1980: 	TileIndex tile = TileVirtXY(x, y);
truelight@1542: 	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
truelight@1542: 	return RemoveTrainWaypoint(tile, flags, true);
truelight@1542: }
truelight@1542: 
Darkvater@1782: /** Rename a waypoint.
Darkvater@1782:  * @param x,y unused
Darkvater@1782:  * @param p1 id of waypoint
Darkvater@1782:  * @param p2 unused
Darkvater@1782:  */
truelight@1542: int32 CmdRenameWaypoint(int x, int y, uint32 flags, uint32 p1, uint32 p2)
truelight@1542: {
truelight@1542: 	Waypoint *wp;
truelight@1542: 	StringID str;
truelight@1542: 
Darkvater@1782: 	if (!IsWaypointIndex(p1)) return CMD_ERROR;
Darkvater@1782: 
tron@1820: 	if (_cmd_text[0] != '\0') {
tron@1820: 		str = AllocateNameUnique(_cmd_text, 0);
truelight@1542: 		if (str == 0)
truelight@1542: 			return CMD_ERROR;
truelight@1542: 
truelight@1542: 		if (flags & DC_EXEC) {
truelight@1542: 			wp = GetWaypoint(p1);
truelight@1542: 			if (wp->string != STR_NULL)
truelight@1542: 				DeleteName(wp->string);
truelight@1542: 
truelight@1542: 			wp->string = str;
truelight@1542: 			wp->town_cn = 0;
truelight@1542: 
truelight@1542: 			UpdateWaypointSign(wp);
truelight@1542: 			MarkWholeScreenDirty();
truelight@1542: 		} else {
truelight@1542: 			DeleteName(str);
truelight@1542: 		}
tron@2026: 	} else {
truelight@1542: 		if (flags & DC_EXEC) {
truelight@1542: 			wp = GetWaypoint(p1);
truelight@1542: 			if (wp->string != STR_NULL)
truelight@1542: 				DeleteName(wp->string);
truelight@1542: 
truelight@1542: 			MakeDefaultWaypointName(wp);
truelight@1542: 			UpdateWaypointSign(wp);
truelight@1542: 			MarkWholeScreenDirty();
truelight@1542: 		}
truelight@1542: 	}
truelight@1542: 	return 0;
truelight@1542: }
truelight@1542: 
truelight@1542: /* This hacks together some dummy one-shot Station structure for a waypoint. */
tron@1977: Station *ComposeWaypointStation(TileIndex tile)
truelight@1542: {
truelight@1542: 	Waypoint *wp = GetWaypointByTile(tile);
truelight@1542: 	static Station stat;
truelight@1542: 
truelight@1542: 	stat.train_tile = stat.xy = wp->xy;
truelight@1542: 	stat.town = GetTown(wp->town_index);
truelight@1542: 	stat.string_id = wp->string == STR_NULL ? /* FIXME? */ 0 : wp->string;
truelight@1542: 	stat.build_date = wp->build_date;
truelight@1542: 	stat.class_id = 6;
truelight@1542: 	stat.stat_id = wp->stat_id;
truelight@1542: 
truelight@1542: 	return &stat;
truelight@1542: }
truelight@1542: 
truelight@1542: extern uint16 _custom_sprites_base;
truelight@1542: 
ludde@2261: 
truelight@1542: /* Draw a waypoint */
tron@2520: void DrawWaypointSprite(int x, int y, int stat_id, RailType railtype)
truelight@1542: {
peter1138@2624: 	const StationSpec *stat;
truelight@1542: 	uint32 relocation;
peter1138@2624: 	const DrawTileSprites *cust;
truelight@1542: 	DrawTileSeqStruct const *seq;
celestar@2254: 	const RailtypeInfo *rti = GetRailTypeInfo(railtype);
truelight@1542: 	uint32 ormod, img;
truelight@1542: 
truelight@1542: 	ormod = SPRITE_PALETTE(PLAYER_SPRITE_COLOR(_local_player));
truelight@1542: 
truelight@1542: 	x += 33;
truelight@1542: 	y += 17;
truelight@1542: 
peter1138@2625: 	stat = GetCustomStation(STAT_CLASS_WAYP, stat_id);
peter1138@2625: 	if (stat == NULL) {
peter1138@2625: 		// stat is NULL for default waypoints and when waypoint graphics are
peter1138@2625: 		// not loaded.
ludde@2261: 		DrawDefaultWaypointSprite(x, y, railtype);
truelight@1542: 		return;
truelight@1542: 	}
truelight@1542: 
truelight@1542: 	relocation = GetCustomStationRelocation(stat, NULL, 1);
truelight@1542: 	// emulate station tile - open with building
truelight@1542: 	// add 1 to get the other direction
truelight@1542: 	cust = &stat->renderdata[2];
truelight@1542: 
truelight@1542: 	img = cust->ground_sprite;
celestar@2254: 	img += (img < _custom_sprites_base) ? rti->total_offset : railtype;
truelight@1542: 
celestar@2187: 	if (img & PALETTE_MODIFIER_COLOR) img = (img & SPRITE_MASK);
truelight@1542: 	DrawSprite(img, x, y);
truelight@1542: 
truelight@1542: 	foreach_draw_tile_seq(seq, cust->seq) {
truelight@1542: 		Point pt = RemapCoords(seq->delta_x, seq->delta_y, seq->delta_z);
truelight@1542: 		uint32 image = seq->image + relocation;
celestar@2187: 		DrawSprite((image & SPRITE_MASK) | ormod, x + pt.x, y + pt.y);
truelight@1542: 	}
truelight@1542: }
truelight@1542: 
truelight@1542: /* Fix savegames which stored waypoints in their old format */
truelight@1542: void FixOldWaypoints(void)
truelight@1542: {
truelight@1542: 	Waypoint *wp;
truelight@1542: 
truelight@1542: 	/* Convert the old 'town_or_string', to 'string' / 'town' / 'town_cn' */
truelight@1542: 	FOR_ALL_WAYPOINTS(wp) {
truelight@1542: 		if (wp->xy == 0)
truelight@1542: 			continue;
truelight@1542: 
truelight@1542: 		wp->town_index = ClosestTownFromTile(wp->xy, (uint)-1)->index;
truelight@1542: 		wp->town_cn = 0;
truelight@1542: 		if (wp->string & 0xC000) {
truelight@1542: 			wp->town_cn = wp->string & 0x3F;
truelight@1542: 			wp->string = STR_NULL;
truelight@1542: 		}
truelight@1542: 	}
truelight@1542: }
truelight@1542: 
truelight@1542: void InitializeWaypoints(void)
truelight@1542: {
truelight@1542: 	CleanPool(&_waypoint_pool);
truelight@1542: 	AddBlockToPool(&_waypoint_pool);
truelight@1542: }
truelight@1542: 
Darkvater@1881: static const SaveLoad _waypoint_desc[] = {
truelight@1542: 	SLE_CONDVAR(Waypoint, xy, SLE_FILE_U16 | SLE_VAR_U32, 0, 5),
truelight@1542: 	SLE_CONDVAR(Waypoint, xy, SLE_UINT32, 6, 255),
truelight@1542: 	SLE_CONDVAR(Waypoint, town_index, SLE_UINT16, 12, 255),
truelight@1542: 	SLE_CONDVAR(Waypoint, town_cn, SLE_UINT8, 12, 255),
tron@2026: 	SLE_VAR(Waypoint, string, SLE_UINT16),
tron@2026: 	SLE_VAR(Waypoint, deleted, SLE_UINT8),
truelight@1542: 
peter1138@2670: 	SLE_CONDVAR(Waypoint, build_date, SLE_UINT16,  3, 255),
peter1138@2670: 	SLE_CONDVAR(Waypoint, localidx,   SLE_UINT8,   3, 255),
peter1138@2670: 	SLE_CONDVAR(Waypoint, grfid,      SLE_UINT32, 17, 255),
truelight@1542: 
truelight@1542: 	SLE_END()
truelight@1542: };
truelight@1542: 
truelight@1542: static void Save_WAYP(void)
truelight@1542: {
truelight@1542: 	Waypoint *wp;
truelight@1542: 
truelight@1542: 	FOR_ALL_WAYPOINTS(wp) {
truelight@1542: 		if (wp->xy != 0) {
truelight@1542: 			SlSetArrayIndex(wp->index);
truelight@1542: 			SlObject(wp, _waypoint_desc);
truelight@1542: 		}
truelight@1542: 	}
truelight@1542: }
truelight@1542: 
truelight@1542: static void Load_WAYP(void)
truelight@1542: {
truelight@1542: 	int index;
truelight@1542: 
truelight@1542: 	while ((index = SlIterateArray()) != -1) {
truelight@1542: 		Waypoint *wp;
truelight@1542: 
truelight@1542: 		if (!AddBlockIfNeeded(&_waypoint_pool, index))
truelight@1542: 			error("Waypoints: failed loading savegame: too many waypoints");
truelight@1542: 
truelight@1542: 		wp = GetWaypoint(index);
truelight@1542: 		SlObject(wp, _waypoint_desc);
truelight@1542: 	}
truelight@1542: }
truelight@1542: 
truelight@1542: const ChunkHandler _waypoint_chunk_handlers[] = {
truelight@1542: 	{ 'CHKP', Save_WAYP, Load_WAYP, CH_ARRAY | CH_LAST},
truelight@1542: };