(svn r1) Import of revision 975 of old (crashed) SVN

1 files changed, 1867 insertions, 0 deletions

diff --git a/town_cmd.c b/town_cmd.c
new file mode 100644
index 000000000..c72ca7001
--- /dev/null
+++ b/town_cmd.c
@@ -0,0 +1,1867 @@
+#include "stdafx.h"
+#include "ttd.h"
+#include "viewport.h"
+#include "town.h"
+#include "command.h"
+#include "pathfind.h"
+#include "gfx.h"
+#include "industry.h"
+#include "station.h"
+#include "player.h"
+#include "news.h"
+#include "saveload.h"
+#include "economy.h"
+#include "gui.h"
+
+// Local
+static int _grow_town_result;
+
+static bool BuildTownHouse(Town *t, uint tile);
+static void ClearTownHouse(Town *t, uint tile);
+static void DoBuildTownHouse(Town *t, uint tile);
+
+typedef struct DrawTownTileStruct {
+	uint32 sprite_1;
+	uint32 sprite_2;
+
+	byte subtile_xy;
+	byte width_height;
+	byte dz;
+	byte proc;
+} DrawTownTileStruct;
+
+#include "table/town_land.h"
+
+
+static void TownDrawTileProc1(TileInfo *ti)
+{
+	AddChildSpriteScreen(0x5A3, 0xE, 0x3C - (_map_owner[ti->tile]&0x7F));
+}
+
+typedef void TownDrawTileProc(TileInfo *ti);
+static TownDrawTileProc * const _town_draw_tile_procs[1] = {
+	TownDrawTileProc1
+};
+
+
+static void DrawTile_Town(TileInfo *ti)
+{
+	const DrawTownTileStruct *dcts;
+	byte z;
+	uint32 image;
+
+	/* Retrieve pointer to the draw town tile struct */
+	{
+		uint hash, t;
+		hash  = ti->x >> 4;
+		hash ^= hash>>2;
+		hash ^= (t=(ti->y >> 4));
+		hash -= t>>2;
+		dcts = &_town_draw_tile_data[((_map2[ti->tile]<<4)|(_map3_lo[ti->tile]>>6)|((hash&3)<<2))];
+	}
+
+	z = ti->z;
+
+	/* Add bricks below the house? */
+	if (ti->tileh) {
+		AddSortableSpriteToDraw(0x3DD + ti->tileh, ti->x, ti->y, 16, 16, 7, z);
+		AddChildSpriteScreen(dcts->sprite_1, 0x1F, 1);
+		z += 8;
+	} else {
+		/* Else draw regular ground */
+		DrawGroundSprite(dcts->sprite_1);
+	}
+
+	/* Add a house on top of the ground? */
+	if ((image = dcts->sprite_2) != 0) {
+		if (!(_display_opt & DO_TRANS_BUILDINGS))
+			image = (image & 0x3FFF) | 0x3224000;
+		
+		AddSortableSpriteToDraw(image, 
+			ti->x | (dcts->subtile_xy>>4),
+			ti->y | (dcts->subtile_xy&0xF),
+			(dcts->width_height>>4)+1,
+			(dcts->width_height&0xF)+1,
+			dcts->dz,
+			z);
+
+		if (!(_display_opt & DO_TRANS_BUILDINGS))
+			return;
+	}
+
+	{
+		int proc;
+		if ((proc=dcts->proc-1) >= 0 )
+			_town_draw_tile_procs[proc](ti);
+	}
+}
+
+static uint GetSlopeZ_Town(TileInfo *ti)
+{
+	uint z = GetPartialZ(ti->x&0xF, ti->y&0xF, ti->tileh) + ti->z;
+	if (ti->tileh != 0) z = (z & ~7) + 4;
+	return (uint16) z;	
+}
+
+static void AnimateTile_Town(uint tile)
+{
+	int old;
+	int i;
+	int a,b;
+
+	if (_tick_counter & 3)
+		return;
+
+	if (_map2[tile] != 4 && _map2[tile] != 5)
+		return;
+
+	if (!((old=_map_owner[tile])&0x80)) {
+		_map_owner[tile] |= 0x80;
+
+		do {
+			i = (Random()&7) - 1;
+		} while (i < 0 || i == 1 || i*6==old);
+
+		_map5[tile] = (_map5[tile] & ~0x3F) | i;
+	}
+
+	a = _map_owner[tile]&0x7F;
+	b = (_map5[tile]&0x3F) * 6;
+	a += (a < b) ? 1 : -1;
+	_map_owner[tile] = (_map_owner[tile]&0x80)|a;
+
+	if (a == b) {
+		_map5[tile] &= 0x40;
+		_map_owner[tile] &= 0x7F;
+		DeleteAnimatedTile(tile);
+	}
+	
+	MarkTileDirtyByTile(tile);
+}
+
+static void UpdateTownRadius(Town *t);
+
+static bool IsCloseToTown(uint tile, uint dist)
+{
+	Town *t;
+
+	FOR_ALL_TOWNS(t) {
+		if (t->xy != 0 && GetTileDist(tile, t->xy) < dist)
+			return true;
+	}
+	return false;
+}
+
+
+static void ChangePopulation(Town *t, int mod)
+{
+	t->population += mod;
+	InvalidateWindow(WC_TOWN_VIEW, t->index);
+
+	if (_town_sort_order & 2) _town_sort_dirty = true;
+}
+
+static void MakeSingleHouseBigger(uint tile)
+{
+	byte b;
+	
+	assert(IS_TILETYPE(tile, MP_HOUSE));
+	
+	b = _map5[tile];
+	if (b & 0x80)
+		return;
+
+	_map5[tile] = (b & 0xC0) | ((b+1)&7);
+
+	if ((_map5[tile]&7) != 0)
+		return;
+
+	_map3_lo[tile] = _map3_lo[tile] + 0x40;
+
+	if ( (_map3_lo[tile] & 0xC0) == 0xC0) {
+		Town *t = ClosestTownFromTile(tile, (uint)-1);
+		ChangePopulation(t, _housetype_population[_map2[tile]]); 
+	}
+	MarkTileDirtyByTile(tile);
+}
+
+static void MakeTownHouseBigger(uint tile)
+{
+	uint flags = _house_more_flags[_map2[tile]]; 
+	if (flags & 8) MakeSingleHouseBigger(TILE_ADDXY(tile, 0, 0));
+	if (flags & 4) MakeSingleHouseBigger(TILE_ADDXY(tile, 0, 1));
+	if (flags & 2) MakeSingleHouseBigger(TILE_ADDXY(tile, 1, 0));
+	if (flags & 1) MakeSingleHouseBigger(TILE_ADDXY(tile, 1, 1));
+}
+
+static void TileLoop_Town(uint tile)
+{
+	int house;
+	Town *t;
+	uint32 r;
+
+	if ((_map3_lo[tile] & 0xC0) != 0xC0) {
+		MakeTownHouseBigger(tile);
+		return;
+	}
+
+	house = _map2[tile];
+	if (_housetype_extra_flags[house] & 0x20 &&
+			!(_map5[tile] & 0x80) &&
+			CHANCE16(1,2) &&
+			AddAnimatedTile(tile)) {
+		_map5[tile] = (_map5[tile] & 0x40)|0x80;
+	}
+
+	t = ClosestTownFromTile(tile, (uint)-1);
+
+	r = Random();
+
+	if ( (byte)r < _housetype_population[house] ) {
+		uint amt = ((byte)r >> 3) + 1, moved;
+		if (_economy.fluct <= 0) amt = (amt + 1) >> 1;
+		t->new_max_pass += amt;
+		moved = MoveGoodsToStation(tile, 1, 1, CT_PASSENGERS, amt);
+		t->new_act_pass += moved;
+	}
+
+	if ( (byte)(r>>8) < _housetype_mailamount[house] ) {
+		uint amt = ((byte)(r>>8) >> 3) + 1, moved;
+		if (_economy.fluct <= 0) amt = (amt + 1) >> 1;
+		t->new_max_mail += amt;
+		moved = MoveGoodsToStation(tile, 1, 1, CT_MAIL, amt);
+		t->new_act_mail += moved;
+	}
+
+	if (_house_more_flags[house]&8 && (t->flags12&1) && --t->time_until_rebuild == 0) {
+		r>>=16;
+		t->time_until_rebuild = (r & 63) + 130;
+
+		_current_player = OWNER_TOWN;
+
+		ClearTownHouse(t, tile);
+		
+		// rebuild with another house?
+		if ( (byte) (r >> 8) >= 12) {
+			DoBuildTownHouse(t, tile);
+		}
+	}
+}
+
+static void ClickTile_Town(uint tile)
+{
+	/* not used */
+}
+
+static int32 ClearTile_Town(uint tile, byte flags)
+{
+	int house, rating;
+	int32 cost;
+	Town *t;
+
+	// safety checks
+	if (!EnsureNoVehicle(tile)) return CMD_ERROR;
+	if (flags&DC_AUTO && !(flags&DC_AI_BUILDING)) return_cmd_error(STR_2004_BUILDING_MUST_BE_DEMOLISHED);
+
+	house = _map2[tile];
+	cost = _price.remove_house * _housetype_remove_cost[house] >> 8;
+
+	rating = _housetype_remove_ratingmod[house];
+	_cleared_town_rating += rating;
+	_cleared_town = t = ClosestTownFromTile(tile, (uint)-1);
+	
+	if (_current_player < MAX_PLAYERS) {
+		if (rating > t->ratings[_current_player] && !(flags & DC_NO_TOWN_RATING) && !_cheats.magic_bulldozer.value) {
+			SET_DPARAM16(0, t->index);
+			return_cmd_error(STR_2009_LOCAL_AUTHORITY_REFUSES);
+		}	
+	}
+
+	if (flags & DC_EXEC) {
+		ChangeTownRating(t, -rating, -1000);
+		ClearTownHouse(t, tile);
+	}
+
+	return cost;
+}
+
+static void GetAcceptedCargo_Town(uint tile, AcceptedCargo *ac)
+{
+	int type = _map2[tile];
+	
+	ac->type_1 = CT_PASSENGERS;
+	ac->amount_1 = _housetype_cargo_passengers[type];
+
+	ac->type_2 = CT_GOODS;
+	ac->amount_2 = _housetype_cargo_goods[type];
+	if (ac->amount_2 & 0x80) {
+		ac->amount_2 &= 0x7F;
+		ac->type_2 = CT_FOOD;
+	}
+
+	ac->type_3 = CT_MAIL;
+	ac->amount_3 = _housetype_cargo_mail[type];
+}
+
+static void GetTileDesc_Town(uint tile, TileDesc *td)
+{
+	td->str = _town_tile_names[_map2[tile]];
+	if ((_map3_lo[tile] & 0xC0) != 0xC0) {
+		SET_DPARAMX16(td->dparam, 0, td->str);
+		td->str = STR_2058_UNDER_CONSTRUCTION;
+	}
+
+	td->owner = OWNER_TOWN;
+}
+
+static uint32 GetTileTrackStatus_Town(uint tile, int mode)
+{
+	/* not used */
+	return 0;
+}
+
+static void ChangeTileOwner_Town(uint tile, byte old_player, byte new_player)
+{
+	/* not used */
+}
+
+
+static const TileIndexDiff _roadblock_tileadd[4+3] = {
+	TILE_XY(0,-1),
+	TILE_XY(1,0),
+	TILE_XY(0,1),
+	TILE_XY(-1,0),
+	
+	// Store the first 3 elements again.
+	// Lets us rotate without using &3.
+	TILE_XY(0,-1),
+	TILE_XY(1,0),
+	TILE_XY(0,1),
+};
+
+static void TownTickHandler(Town *t)
+{
+	if (t->flags12&1) {
+		int i = t->grow_counter - 1;
+		if (i < 0) {
+			if (GrowTown(t)) {
+				i = t->growth_rate;
+			} else {
+				i = 0;	
+			}
+		}
+		t->grow_counter = i;
+	}
+
+	UpdateTownRadius(t);
+}
+
+void OnTick_Town()
+{
+	uint i;
+	Town *t;
+
+	if (_game_mode == GM_EDITOR)
+		return;
+
+	i = _cur_town_ctr;
+	t = DEREF_TOWN(i);
+	if (++i == lengthof(_towns)) i = 0;
+	_cur_town_ctr = i;
+
+	if (t->xy != 0)
+		TownTickHandler(t);
+
+}
+
+static byte GetTownRoadMask(TileIndex tile)
+{
+	byte b = GetRoadBitsByTile(tile);
+	byte r=0;
+	if (b&1) r|=10;
+	if (b&2) r|=5;
+	if (b&4) r|=9;
+	if (b&8) r|=6;
+	if (b&16) r|=3;
+	if (b&32) r|=12;
+	return r;
+}
+
+static bool IsRoadAllowedHere(uint tile, int dir)
+{
+	uint k;
+	uint slope;
+
+	// If this assertion fails, it might be because the world contains
+	//  land at the edges. This is not ok.
+	TILE_ASSERT(tile);
+	
+	for(;;) {
+		// Check if there already is a road at this point?
+		if (GetRoadBitsByTile(tile) == 0) {
+			// No, try to build one in the direction.
+			// if that fails clear the land, and if that fails exit.
+			// This is to make sure that we can build a road here later.
+			if (DoCommandByTile(tile, (dir&1)?0xA:0x5, 0, DC_AUTO, CMD_BUILD_ROAD) == CMD_ERROR &&
+					DoCommandByTile(tile, 0, 0, DC_AUTO, CMD_LANDSCAPE_CLEAR) == CMD_ERROR)
+				return false;
+		}
+
+		slope = GetTileSlope(tile, NULL);
+		if (slope == 0) {
+			// Tile has no slope
+			// Disallow the road if any neighboring tile has a road.
+			if (HASBIT(GetTownRoadMask(TILE_ADD(tile, _roadblock_tileadd[dir+1])), dir^2) ||
+					HASBIT(GetTownRoadMask(TILE_ADD(tile, _roadblock_tileadd[dir+3])), dir^2) ||
+					HASBIT(GetTownRoadMask(TILE_ADD(tile, _roadblock_tileadd[dir+1] + _roadblock_tileadd[dir+2])), dir) ||
+					HASBIT(GetTownRoadMask(TILE_ADD(tile, _roadblock_tileadd[dir+3] + _roadblock_tileadd[dir+2])), dir))
+				return false;
+			
+			// Otherwise allow
+			return true;
+		}
+		
+		// If the tile is not a slope in the right direction, then
+		// maybe terraform some.
+		if ((k = (dir&1)?0xC:0x9) != slope && (k^0xF) != slope) {
+			uint32 r = Random();
+
+			if (CHANCE16I(1,8, r) && !_generating_world) {
+				if (CHANCE16I(1,16,r))
+					DoCommandByTile(tile, slope, 0, DC_EXEC | DC_AUTO | DC_NO_WATER, CMD_TERRAFORM_LAND);
+				else
+					DoCommandByTile(tile, slope^0xF, 1, DC_EXEC | DC_AUTO | DC_NO_WATER, CMD_TERRAFORM_LAND);
+			}
+			return false;
+		}
+
+		tile = TILE_ADD(tile, _roadblock_tileadd[dir]);
+	}
+}
+
+static bool TerraformTownTile(uint tile, int edges, int dir)
+{
+	int32 r;
+	
+	TILE_ASSERT(tile);
+
+	r = DoCommandByTile(tile, edges, dir, DC_AUTO | DC_NO_WATER, CMD_TERRAFORM_LAND);
+	if (r == CMD_ERROR || r >= 126*16)
+		return false;
+	DoCommandByTile(tile, edges, dir, DC_AUTO | DC_NO_WATER | DC_EXEC, CMD_TERRAFORM_LAND);
+	return true;
+}
+
+static void LevelTownLand(uint tile)
+{
+	TileInfo ti;
+
+	TILE_ASSERT(tile);
+
+	// Don't terraform if land is plain or if there's a house there.
+	FindLandscapeHeightByTile(&ti, tile);
+	if (ti.tileh == 0 || ti.type == MP_HOUSE)
+		return;
+
+	// First try up, then down
+	if (!TerraformTownTile(tile, ~ti.tileh & 0xF, 1)) {
+		TerraformTownTile(tile, ti.tileh & 0xF, 0);
+	}
+}
+
+#define IS_WATER_TILE(t) (IS_TILETYPE((t), MP_WATER) && _map5[(t)] == 0)
+
+static void GrowTownInTile(uint *tile_ptr, uint mask, int block, Town *t1)
+{
+	Town *t2;
+	uint16 r;
+	int a,b,rcmd;
+	uint tmptile;
+	TileInfo ti;
+	int i;
+	int j;
+	uint tile = *tile_ptr;
+
+	TILE_ASSERT(tile);
+
+	if (mask == 0) {
+		// Tile has no road. First reset the status counter
+		// to say that this is the last iteration.	
+		_grow_town_result = 0;
+
+		// Then check if the tile we are at belongs to the town,
+		// if not, bail out.
+		t2 = ClosestTownFromTile(tile, (uint)-1);
+		if (t2 != t1)
+			return;
+
+		// Remove hills etc
+		LevelTownLand(tile);
+
+		// Is a road allowed here?
+		if (!IsRoadAllowedHere(tile, block))
+			return;
+
+		// Randomize new road block numbers
+		a = block;
+		b = block ^ 2;
+		r = (uint16)Random();
+		if (r <= 0x4000) do {
+			a = (int)Random() & 3;
+		} while(a == b);
+
+		if (!IsRoadAllowedHere(TILE_ADD(tile,_roadblock_tileadd[a]), a)) {
+			// A road is not allowed to continue the randomized road,
+			//   return if the road we're trying to build is curved.
+			if ( a != (b^2))
+				return;
+			
+			// Return if neither side of the new road is a house
+			if (!IS_TILETYPE(TILE_ADD(tile,_roadblock_tileadd[a+1]), MP_HOUSE) &&
+					!IS_TILETYPE(TILE_ADD(tile,_roadblock_tileadd[a+3]), MP_HOUSE))
+				return;
+
+			// That means that the road is only allowed if there is a house
+			//  at any side of the new road.
+		}
+		rcmd = (1 << a) + (1 << b);
+
+	} else if (block < 5 && !HASBIT(mask,block^2)) {
+		// Continue building on a partial road.
+		// Always OK.
+		_grow_town_result = 0;
+		rcmd = 1 << (block^2);
+	} else {
+
+		// Reached a tunnel? Then continue at the other side of it.
+		if (IS_TILETYPE(tile, MP_TUNNELBRIDGE) && (_map5[tile]&~3)==4) {
+			FindLengthOfTunnelResult flotr = FindLengthOfTunnel(tile, _map5[tile]&3, 2);
+			*tile_ptr = flotr.tile;
+			return;
+		}
+		
+		// For any other kind of tunnel/bridge, bail out.
+		if (IS_TILETYPE(tile, MP_TUNNELBRIDGE))
+			return;
+
+		// Possibly extend the road in a direction.
+		// Randomize a direction and if it has a road, bail out.
+		i = (int)Random() & 3;
+		if (HASBIT(mask, i))
+			return;
+
+		// This is the tile we will reach if we extend to this direction.
+		tmptile = TILE_ADD(tile,_roadblock_tileadd[i]);
+		
+		// Don't do it if it reaches to water.
+		if (IS_WATER_TILE(tmptile))
+			return;
+
+		// If the new tile belongs to another town,
+		//  then stop the search altogether.
+		if (ClosestTownFromTile(tmptile, (uint)-1) != t1) {
+			_grow_town_result = 0;
+			return;
+		}
+
+		// Build a house at the edge. 60% chance or 
+		//  always ok if no road allowed.
+		if (!IsRoadAllowedHere(tmptile, i) || CHANCE16(6,10)) {
+			// But not if there already is a house there.
+			if (!IS_TILETYPE(tmptile, MP_HOUSE)) {
+				// Level the land if possible
+				LevelTownLand(tmptile);
+
+				// And build a house.
+				// Set result to -1 if we managed to build it.
+				if (BuildTownHouse(t1, tmptile))
+					_grow_town_result = -1;
+			}
+			return;
+		}
+
+		_grow_town_result = 0;
+		rcmd = 1 << i;
+	}
+
+	FindLandscapeHeightByTile(&ti, tile);
+
+	// Return if a water tile
+	if (ti.type == MP_WATER && ti.map5==0)
+		return;
+
+	// Determine direction of slope,
+	//  and build a road if not a special slope.
+	if ((i=0,ti.tileh != 3) &&
+			(i++,ti.tileh != 9) &&
+			(i++,ti.tileh != 12) &&
+			(i++,ti.tileh != 6)) {
+build_road_and_exit:
+		if (DoCommandByTile(tile, rcmd, 0, DC_EXEC | DC_AUTO | DC_NO_WATER, CMD_BUILD_ROAD) != CMD_ERROR)
+			_grow_town_result = -1;
+		return;
+	}
+
+	tmptile = tile;
+
+	// Now it contains the direction of the slope
+	j = -11;	// max 11 tile long bridges
+	do {
+		if (++j == 0)
+			goto build_road_and_exit;
+		tmptile = TILE_MASK(tmptile + _tileoffs_by_dir[i]);
+	} while (IS_WATER_TILE(tmptile));
+
+	// no water tiles in between?
+	if (j == -10)
+		goto build_road_and_exit;
+
+	// Quit if it selecting an appropiate bridge type fails a large number of times.
+	j = 22;
+	{
+		int32 bridge_len = GetBridgeLength(tile, tmptile);
+		do {
+			byte bridge_type = RandomRange(MAX_BRIDGES - 1);
+			if (CheckBridge_Stuff(bridge_type, bridge_len)) {
+				if (DoCommandByTile(tile, tmptile, 0x8000 + bridge_type, DC_EXEC | DC_AUTO, CMD_BUILD_BRIDGE) != CMD_ERROR)
+					_grow_town_result = -1;
+
+				// obviously, if building any bridge would fail, there is no need to try other bridge-types
+				return;
+			}
+		} while(--j != 0);
+	}
+}
+#undef IS_WATER_TILE
+
+
+// Returns true if a house was built, or no if the build failed.
+static int GrowTownAtRoad(Town *t, uint tile)
+{
+	uint mask;
+	int block = 5; // special case
+
+	TILE_ASSERT(tile);
+
+	// Number of times to search.
+	_grow_town_result = 20;
+
+	do {
+		// Get a bitmask of the road blocks on a tile
+		mask = GetTownRoadMask(tile);
+
+		// Try to grow the town from this point
+		GrowTownInTile(&tile,mask,block,t);
+
+		// Exclude the source position from the bitmask
+		// and return if no more road blocks available
+		CLRBIT(mask, (block ^ 2));
+		if (mask == 0)
+			return _grow_town_result;
+
+		// Select a random bit from the blockmask, walk a step
+		// and continue the search from there.
+		do block = Random() & 3; while (!HASBIT(mask,block));
+		tile += _roadblock_tileadd[block];
+
+		// Max number of times is checked.
+	} while (--_grow_town_result >= 0);
+
+	return (_grow_town_result == -2);
+}
+
+// Generate a random road block
+// The probability of a straight road
+// is somewhat higher than a curved.
+static int GenRandomRoadBits()
+{
+	uint32 r = Random();
+	int a = r&3, b = (r >> 8) & 3;
+	if (a == b) b ^= 2;
+	return (1<<a)+(1<<b);
+}
+
+// Grow the town
+// Returns true if a house was built, or no if the build failed.
+bool GrowTown(Town *t)
+{
+	uint tile;
+	const TileIndexDiff *ptr;
+	int offs;
+	TileInfo ti;
+
+	static const TileIndexDiff _town_coord_mod[] = {
+		TILE_XY(-1,0),
+		TILE_XY(1,1),
+		TILE_XY(1,-1),
+		TILE_XY(-1,-1),
+		TILE_XY(-1,0),
+		TILE_XY(0,2),
+		TILE_XY(2,0),
+		TILE_XY(0,-2),
+		TILE_XY(-1,-1),
+		TILE_XY(-2,2),
+		TILE_XY(2,2),
+		TILE_XY(2,-2),
+		0,
+	};
+
+	// Current player is a town
+	_current_player = OWNER_TOWN;
+
+	// Find a road that we can base the construction on.
+	tile = t->xy;
+	ptr = _town_coord_mod;
+	do {
+		if (GetRoadBitsByTile(tile) != 0) {
+			return GrowTownAtRoad(t, tile);
+		}
+		offs = *ptr++;
+		
+		tile = TILE_ADD(tile, offs);
+	} while (offs);
+
+	// No road available, try to build a random road block by
+	// clearing some land and then building a road there.
+	tile = t->xy;
+	ptr = _town_coord_mod;
+	do {
+		FindLandscapeHeightByTile(&ti, tile);
+		
+		// Only work with plain land that not already has a house with map5=0
+		if (ti.tileh == 0 && !(ti.type==MP_HOUSE && ti.map5==0)) {
+			if (DoCommandByTile(tile, 0, 0, DC_AUTO, CMD_LANDSCAPE_CLEAR) != CMD_ERROR) {
+				DoCommandByTile(tile, GenRandomRoadBits(), 0, DC_EXEC | DC_AUTO, CMD_BUILD_ROAD);
+				return true;
+			}
+		}
+		offs = *ptr++;
+		tile = TILE_ADD(tile, offs);
+	} while (offs != 0);
+
+	return false;
+}
+
+static void UpdateTownRadius(Town *t)
+{
+	static const uint16 _town_radius_data[23][5] = {
+		{ 4,  0,  0,  0,  0},
+		{16,  0,  0,  0,  0},
+		{25,  0,  0,  0,  0},
+		{36,  0,  0,  0,  0},
+		{49,  0,  4,  0,  0},
+		{64,  0,  4,  0,  0},
+		{64,  0,  9,  0,  1},
+		{64,  0,  9,  0,  4},
+		{64,  0, 16,  0,  4},
+		{81,  0, 16,  0,  4},
+		{81,  0, 16,  0,  4},
+		{81,  0, 25,  0,  9},
+		{81, 36, 25,  0,  9},
+		{81, 36, 25, 16,  9},
+		{81, 49,  0, 25,  9},
+		{81, 64,  0, 25,  9},
+		{81, 64,  0, 36,  9},
+		{81, 64,  0, 36, 16},
+		{ 0, 81,  0, 49, 16},
+		{ 0, 81,  0, 49, 25},
+		{ 0,100,  0, 49, 25},
+		{ 0,100,  0, 64, 25},
+		{ 0,100,  0, 64, 36},
+	};
+	int i = min(t->num_houses, 88) >> 2;
+	memcpy(t->radius, _town_radius_data[i], sizeof(t->radius));
+}
+
+static void UpdateTownVirtCoord(Town *t)
+{
+	Point pt = RemapCoords2(GET_TILE_X(t->xy)*16, GET_TILE_Y(t->xy)*16);
+	SET_DPARAM32(0, t->townnameparts);
+	UpdateViewportSignPos(&t->sign, pt.x, pt.y - 24, t->townnametype);
+}
+
+static void CreateTownName(Town *t1)
+{
+	Town *t2;
+	char buf1[64];
+	char buf2[64];
+	uint32 r;
+
+	t1->townnametype = SPECSTR_TOWNNAME_START + _opt.town_name;
+
+	for(;;) {
+restart:
+		r = Random();
+
+		SET_DPARAM32(0, r);
+		GetString(buf1, t1->townnametype);
+			
+		// Check size and width
+		if (strlen(buf1) >= 31 || GetStringWidth(buf1) > 130)
+			continue;
+
+		FOR_ALL_TOWNS(t2) {
+			if (t2->xy != 0) {
+				SET_DPARAM32(0, t2->townnameparts);
+				GetString(buf2, t2->townnametype);
+				if (str_eq(buf1, buf2))
+					goto restart;
+			}
+		}
+		t1->townnameparts = r;
+		
+		return;
+	}
+}
+
+static void UpdateTownMaxPass(Town *t)
+{
+	t->max_pass = t->population >> 3;
+	t->max_mail = t->population >> 4;
+}
+
+static void DoCreateTown(Town *t, TileIndex tile)
+{
+	int x, i;
+
+	// clear the town struct
+	i = t->index;
+	memset(t, 0, sizeof(Town));
+	t->index = i;
+
+	t->xy = tile;
+	t->num_houses = 0;
+	t->time_until_rebuild = 10;
+	UpdateTownRadius(t);
+	t->flags12 = 0;
+	t->population = 0;
+	t->grow_counter = 0;
+	t->growth_rate = 250;
+	t->new_max_pass = 0;
+	t->new_max_mail = 0;
+	t->new_act_pass = 0;
+	t->new_act_mail = 0;
+	t->max_pass = 0;
+	t->max_mail = 0;
+	t->act_pass = 0;
+	t->act_mail = 0;
+
+	t->pct_pass_transported = 0;
+	t->pct_mail_transported = 0;
+	t->fund_buildings_months = 0;
+	t->new_act_food = 0;
+	t->new_act_paper = 0;
+	t->act_food = 0;
+	t->act_paper = 0;
+
+	for(i = 0; i != MAX_PLAYERS; i++)
+		t->ratings[i] = 500;
+
+	t->have_ratings = 0;
+	t->statues = 0;
+
+	CreateTownName(t);
+		
+	UpdateTownVirtCoord(t);
+	_town_sort_dirty = true;
+
+	x = (Random() & 0xF) + 8;
+	if (_game_mode == GM_EDITOR)
+		x = _new_town_size * 16 + 3;
+
+	t->num_houses += x;
+	UpdateTownRadius(t);
+
+	i = x * 4;
+	do {
+		GrowTown(t);
+	} while (--i);
+
+	t->num_houses -= x;
+	UpdateTownRadius(t);
+	UpdateTownMaxPass(t);
+}
+
+static Town *AllocateTown()
+{
+	Town *t;
+	FOR_ALL_TOWNS(t) {
+		if (t->xy == 0) {
+			_total_towns++;
+			return t;
+		}
+	}
+	return NULL;
+}
+
+int32 CmdBuildTown(int x, int y, uint32 flags, uint32 p1, uint32 p2)
+{
+	uint tile = TILE_FROM_XY(x,y);
+	TileInfo ti;
+	Town *t;
+	
+	SET_EXPENSES_TYPE(EXPENSES_OTHER);
+
+	// Check if too close to the edge of map
+	if (!CheckDistanceFromEdge(tile, 12))
+		return_cmd_error(STR_0237_TOO_CLOSE_TO_EDGE_OF_MAP);
+
+	// Can only build on clear flat areas.
+	FindLandscapeHeightByTile(&ti, tile);
+	if (ti.type != MP_CLEAR || ti.tileh != 0)
+		return_cmd_error(STR_0239_SITE_UNSUITABLE);
+
+	// Check distance to all other towns.
+	if (IsCloseToTown(tile, 20))
+		return_cmd_error(STR_0238_TOO_CLOSE_TO_ANOTHER_TOWN);
+
+	// Allocate town struct
+	t = AllocateTown();
+	if (t == NULL)
+		return_cmd_error(STR_023A_TOO_MANY_TOWNS);	
+
+	// Create the town
+	if (flags & DC_EXEC) {
+		_generating_world = true;
+		DoCreateTown(t, tile);
+		_generating_world = false;
+	}
+	return 0;
+}
+
+Town *CreateRandomTown()
+{
+	uint tile;
+	TileInfo ti;
+	Town *t;
+	int n;
+
+	// Try 20 times.
+	n = 20;
+	do {
+		// Generate a tile index not too close from the edge
+		tile = TILE_MASK(Random());
+		if (!CheckDistanceFromEdge(tile, 20))
+			continue;
+
+		// Make sure the tile is plain
+		FindLandscapeHeightByTile(&ti, tile);
+		if (ti.type != MP_CLEAR || ti.tileh != 0)
+			continue;
+
+		// Check not too close to a town
+		if (IsCloseToTown(tile, 20))
+			continue;
+		
+		// Allocate a town struct
+		t = AllocateTown();
+		if (t == NULL)
+			break;
+
+		DoCreateTown(t, tile);
+		return t;
+	} while (--n);
+	return NULL;
+}
+
+static const byte _num_initial_towns[3] = {
+	11, 23, 46
+};
+
+void GenerateTowns()
+{
+	uint n;
+	n = _num_initial_towns[_opt.diff.number_towns] + (Random()&7);
+	do CreateRandomTown(); while (--n);
+}
+
+static bool CheckBuildHouseMode(Town *t1, uint tile, uint tileh, int mode) {
+	Town *t2 = ClosestTownFromTile(tile, (uint)-1);
+	int b;
+	uint slope;
+
+	static const byte _masks[8] = {
+		0xC,0x3,0x9,0x6,
+		0x3,0xC,0x6,0x9,
+	};
+
+	if (t2 != t1)
+		return false;
+
+	slope = GetTileSlope(tile, NULL);
+	if (slope & 0x10)
+		return false;
+
+	b = 0;
+	if ((slope & 0xF && ~slope & _masks[mode])) b = ~b;
+	if ((tileh & 0xF && ~tileh & _masks[mode+4])) b = ~b;
+	if (b)
+		return false;
+
+	return DoCommandByTile(tile, 0, 0, DC_EXEC | DC_AUTO | DC_NO_WATER, CMD_LANDSCAPE_CLEAR) != CMD_ERROR;
+}
+
+int GetTownRadiusGroup(Town *t, uint tile)
+{
+	uint dist;
+	int i,smallest;
+
+	dist = GetTileDistAdv(tile, t->xy);
+	if (t->fund_buildings_months && dist <= 25)
+		return 4;
+
+	smallest = 0;
+	for(i=0; i!=lengthof(t->radius); i++) {
+		if (dist < t->radius[i])
+			smallest = i;
+	}
+
+	return smallest;
+}
+
+static bool CheckFree2x2Area(Town *t1, uint tile)
+{
+	Town *t;
+	int i;
+
+	static const TileIndexDiff _tile_add[4] = {
+		TILE_XY(0,0),
+		TILE_XY(0,1) - TILE_XY(0,0),
+		TILE_XY(1,0) - TILE_XY(0,1),
+		TILE_XY(1,1) - TILE_XY(1,0),
+	};
+
+	for(i=0; i!=4; i++) {
+		tile += _tile_add[i];
+
+		t = ClosestTownFromTile(tile, (uint)-1);
+		if (t1 != t) 
+			return false;
+
+		if (GetTileSlope(tile, NULL))
+			return false;
+
+		if (DoCommandByTile(tile, 0, 0, DC_EXEC | DC_AUTO | DC_NO_WATER | DC_FORCETEST, CMD_LANDSCAPE_CLEAR) == CMD_ERROR)
+			return false;
+	}
+
+	return true;
+}
+
+static void DoBuildTownHouse(Town *t, uint tile)
+{
+	int i;
+	uint bitmask;
+	int house;
+	uint slope;
+	int z;
+	uint oneof;
+	
+	// Above snow?
+	slope = GetTileSlope(tile, &z);
+
+	// Get the town zone type
+	{
+		uint rad = GetTownRadiusGroup(t, tile);
+
+		int land = _opt.landscape;
+		if (land == LT_HILLY && z >= _opt.snow_line)
+			land = -1;
+
+		bitmask = (1 << rad) + (1 << (land + 12));
+	}
+
+	// bits 0-4 are used
+	// bits 11-15 are used
+	// bits 5-10 are not used.
+	{
+		byte houses[lengthof(_housetype_flags)];
+		int num = 0;
+
+		// Generate a list of all possible houses that can be built.
+		for(i=0; i!=lengthof(_housetype_flags); i++) {
+			if ((~_housetype_flags[i] & bitmask) == 0)
+				houses[num++] = (byte)i;
+		}
+
+		for(;;) {
+			house = houses[RandomRange(num)];
+
+			if (_cur_year < _housetype_years[house].min || _cur_year > _housetype_years[house].max)
+				continue;
+
+			// Special houses that there can be only one of.
+			oneof = 0;
+			if (house == 0x5B || house == 0x53 || house == 3 ||	house == 0x3C || house == 0x3D)
+				oneof = 2;
+			else if (house == 0x20 || house == 0x14)
+				oneof = 4;
+
+			if (t->flags12 & oneof)
+				continue;
+
+			// Make sure there is no slope?
+			if (_housetype_extra_flags[house]&0x12 && slope)
+				continue;
+			
+			if (_housetype_extra_flags[house]&0x10) {
+				if (CheckFree2x2Area(t,tile) ||
+						CheckFree2x2Area(t,(tile+=TILE_XY(-1,0))) ||
+						CheckFree2x2Area(t,(tile+=TILE_XY(0,-1))) ||
+						CheckFree2x2Area(t,(tile+=TILE_XY(1,0))))
+							break;
+				tile += TILE_XY(0,1);
+			} else if (_housetype_extra_flags[house]&4) {
+				if (CheckBuildHouseMode(t, tile+TILE_XY(1,0), slope, 0))
+					break;
+				
+				if (CheckBuildHouseMode(t, tile+TILE_XY(-1,0), slope, 1)) {
+					tile += TILE_XY(-1,0);
+					break;
+				}
+			} else if (_housetype_extra_flags[house]&8) {
+				if (CheckBuildHouseMode(t, tile+TILE_XY(0,1), slope, 2))
+					break;
+
+				if (CheckBuildHouseMode(t, tile+TILE_XY(0,-1), slope, 3)) {
+					tile += TILE_XY(0,-1);
+					break;
+				}
+			} else
+				break;
+		}
+	}
+
+	t->num_houses++;
+
+	// Special houses that there can be only one of.
+	t->flags12 |= oneof;
+	
+	{
+		int m3lo,m5,eflags;
+
+		// ENDING_2
+		m3lo = 0;
+		m5 = 0;
+		if (_generating_world) {
+			uint32 r = Random();
+			
+			// Value for map3lo
+			m3lo = 0xC0;
+			if ((byte)r >= 220) m3lo &= (r>>8);
+
+			if (m3lo == 0xC0)
+				ChangePopulation(t, _housetype_population[house]);
+			
+			// Initial value for map5.
+			m5 = (r >> 16) & 0x3F;
+		}
+		
+		assert(IS_TILETYPE(tile, MP_CLEAR));
+
+		ModifyTile(tile, 
+			MP_SETTYPE(MP_HOUSE) | MP_MAP2 | MP_MAP3LO | MP_MAP3HI_CLEAR | MP_MAP5 | MP_MAPOWNER,
+			house, /* map2 */
+			m3lo,  /* map3_lo */
+			0,     /* map_owner */
+			m5		 /* map5 */
+		);
+
+		eflags = _housetype_extra_flags[house];
+
+		if (eflags&0x18) {
+			assert(IS_TILETYPE(tile + TILE_XY(0,1), MP_CLEAR));
+			ModifyTile(tile + TILE_XY(0,1),
+				MP_SETTYPE(MP_HOUSE) | MP_MAP2 | MP_MAP3LO | MP_MAP3HI_CLEAR | MP_MAP5 | MP_MAPOWNER,
+				++house,	/* map2 */
+				m3lo,			/* map3_lo */
+				0,				/* map_owner */
+				m5				/* map5 */
+			);
+		}
+
+		if (eflags&0x14) {
+			assert(IS_TILETYPE(tile + TILE_XY(1,0), MP_CLEAR));
+			ModifyTile(tile + TILE_XY(1,0),
+				MP_SETTYPE(MP_HOUSE) | MP_MAP2 | MP_MAP3LO | MP_MAP3HI_CLEAR | MP_MAP5 | MP_MAPOWNER,
+				++house,	/* map2 */
+				m3lo,			/* map3_lo */
+				0,				/* map_owner */
+				m5				/* map5 */
+			);
+		}
+
+		if (eflags&0x10) {
+			assert(IS_TILETYPE(tile + TILE_XY(1,1), MP_CLEAR));
+			ModifyTile(tile + TILE_XY(1,1),
+				MP_SETTYPE(MP_HOUSE) | MP_MAP2 | MP_MAP3LO | MP_MAP3HI_CLEAR | MP_MAP5 | MP_MAPOWNER,
+				++house,	/* map2 */
+				m3lo,			/* map3_lo */
+				0,				/* map_owner */
+				m5				/* map5 */
+			);
+		}
+	}
+
+	// ENDING
+}
+
+static bool BuildTownHouse(Town *t, uint tile)
+{
+	int32 r;
+		
+	// make sure it's possible
+	if (!EnsureNoVehicle(tile)) return false;
+	if (GetTileSlope(tile, NULL) & 0x10) return false;
+
+	r = DoCommandByTile(tile, 0, 0, DC_EXEC | DC_AUTO | DC_NO_WATER, CMD_LANDSCAPE_CLEAR);
+	if (r == CMD_ERROR) return false;
+
+	DoBuildTownHouse(t, tile);
+	return true;
+}
+
+
+static void DoClearTownHouseHelper(uint tile)
+{
+	assert(IS_TILETYPE(tile, MP_HOUSE));
+	DoClearSquare(tile);
+	DeleteAnimatedTile(tile);
+}
+
+static void ClearTownHouse(Town *t, uint tile) {
+	uint house = _map2[tile];
+	uint eflags;
+
+	assert(IS_TILETYPE(tile, MP_HOUSE));
+
+	// need to align the tile to point to the upper left corner of the house
+	if (house >= 3) { // house id 0,1,2 MUST be single tile houses, or this code breaks.
+		if (_housetype_extra_flags[house-1] & 0x04) {
+			house--;
+			tile += TILE_XY(-1,0);
+		} else if (_housetype_extra_flags[house-1] & 0x18) {
+			house--;
+			tile += TILE_XY(0,-1);
+		} else if (_housetype_extra_flags[house-2] & 0x10) {
+			house-=2;
+			tile += TILE_XY(-1,0);
+		} else if (_housetype_extra_flags[house-3] & 0x10) {
+			house-=3;
+			tile += TILE_XY(-1,-1);
+		}
+	}
+		
+	// Remove population from the town if the
+	// house is finished.
+	if ((~_map3_lo[tile] & 0xC0) == 0) {
+		ChangePopulation(t, -_housetype_population[house]);
+	}
+
+	t->num_houses--;
+
+	// Clear flags for houses that only may exist once/town.
+	if (house == 0x5B || house == 0x53 || house == 0x3C ||
+			house == 0x3D || house == 0x03)
+		t->flags12 &= ~2;
+	if (house == 0x14 || house == 0x20)
+		t->flags12 &= ~4;
+	
+	// Do the actual clearing of tiles
+	eflags = _housetype_extra_flags[house];
+	DoClearTownHouseHelper(tile);
+	if (eflags & 0x14) DoClearTownHouseHelper(tile + TILE_XY(1,0));
+	if (eflags & 0x18) DoClearTownHouseHelper(tile + TILE_XY(0,1));
+	if (eflags & 0x10) DoClearTownHouseHelper(tile + TILE_XY(1,1));
+}
+
+int32 CmdRenameTown(int x, int y, uint32 flags, uint32 p1, uint32 p2)
+{
+	StringID str;
+	Town *t = DEREF_TOWN(p1);
+		
+	str = AllocateName((byte*)_decode_parameters, 4);
+	if (str == 0)
+		return CMD_ERROR;
+
+	if (flags & DC_EXEC) {
+		StringID old_str = t->townnametype;
+		t->townnametype = str;
+		DeleteName(old_str);
+
+		UpdateTownVirtCoord(t);
+		_town_sort_dirty = true;
+		UpdateAllStationVirtCoord();
+		MarkWholeScreenDirty();
+	} else {
+		DeleteName(str);
+	}
+	return 0;
+}
+
+// Called from GUI
+void DeleteTown(Town *t)
+{
+	Industry *i;
+	uint tile;
+
+	// Delete town authority window
+	//  and remove from list of sorted towns
+	DeleteWindowById(WC_TOWN_VIEW, t->index);
+	_town_sort_dirty = true;
+
+	// Delete all industries belonging to the town
+	for(i=_industries; i != endof(_industries); i++) {
+		if (i->xy && i->town == t)
+			DeleteIndustry(i);
+	}
+
+	// Go through all tiles and delete those belonging to the town
+	tile = 0;
+	do {
+		if (IS_TILETYPE(tile, MP_HOUSE)) {
+			if (ClosestTownFromTile(tile, (uint)-1) == t) {
+				DoCommandByTile(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
+			}
+		} else if (IS_TILETYPE(tile, MP_TUNNELBRIDGE) || IS_TILETYPE(tile, MP_STREET)) {
+			if (_map_owner[tile] == OWNER_TOWN && ClosestTownFromTile(tile, (uint)-1) == t) {
+				DoCommandByTile(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
+			}
+		}
+	} while (++tile != TILES_X * TILES_Y);
+
+	t->xy = 0;
+	DeleteName(t->townnametype);
+
+	MarkWholeScreenDirty();
+}
+
+// Called from GUI
+void ExpandTown(Town *t)
+{
+	int amount, n;
+
+	_generating_world = true;
+	
+	amount = ((int)Random()&3) + 3;
+	t->num_houses += amount;
+	UpdateTownRadius(t);
+
+	n = amount * 4;
+	do GrowTown(t); while (--n);
+
+	t->num_houses -= amount;
+	UpdateTownRadius(t);
+
+	UpdateTownMaxPass(t);
+	_generating_world = false;
+}
+
+const byte _town_action_costs[8] = {
+	2, 4, 9, 35, 48, 53, 117, 175
+};
+
+typedef void TownActionProc(Town *t, int action);
+
+static void TownActionAdvertise(Town *t, int action)
+{
+	static const byte _advertising_amount[3] = {0x40, 0x70, 0xA0};
+	static const byte _advertising_radius[3] = {10,15,20};
+	ModifyStationRatingAround(t->xy, _current_player, 
+		_advertising_amount[action],
+		_advertising_radius[action]);
+}
+
+static void TownActionRoadRebuild(Town *t, int action)
+{
+	Player *p;
+
+	t->road_build_months = 6;
+	
+	SET_DPARAM16(0, t->index);
+
+	p = DEREF_PLAYER(_current_player);
+	SET_DPARAM16(1, p->name_1);
+	SET_DPARAM32(2, p->name_2);
+
+	AddNewsItem(STR_2055_TRAFFIC_CHAOS_IN_ROAD_REBUILDING, 
+		NEWS_FLAGS(NM_NORMAL, NF_TILE, NT_GENERAL, 0), t->xy, 0);
+}
+
+static bool DoBuildStatueOfCompany(uint tile)
+{
+	TileInfo ti;
+	byte old;
+	int32 r;
+
+	FindLandscapeHeightByTile(&ti, tile);
+	if (ti.tileh != 0)
+		return false;
+
+	if (ti.type != MP_HOUSE && ti.type != MP_CLEAR && ti.type != MP_TREES)
+		return false;
+
+
+	old = _current_player;
+	_current_player = OWNER_NONE;
+	r = DoCommandByTile(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
+	_current_player = old;
+
+	if (r == CMD_ERROR)
+		return false;
+
+	ModifyTile(tile, MP_SETTYPE(MP_UNMOVABLE) | MP_MAPOWNER_CURRENT | MP_MAP5,
+		2 /* map5 */
+	);
+
+	return true;
+}
+
+static void TownActionBuildStatue(Town *t, int action)
+{
+	// Layouted as an outward spiral
+	static const TileIndexDiff _statue_tiles[] = {
+	  TILE_XY(-1,0), TILE_XY(0,1),  TILE_XY(1,0),  TILE_XY(1,0),
+	  TILE_XY(0,-1), TILE_XY(0,-1), TILE_XY(-1,0), TILE_XY(-1,0), 
+	  TILE_XY(-1,0), TILE_XY(0,1),  TILE_XY(0,1),  TILE_XY(0,1),
+	  TILE_XY(1,0),  TILE_XY(1,0),  TILE_XY(1,0),  TILE_XY(1,0),
+	  TILE_XY(0,-1), TILE_XY(0,-1), TILE_XY(0,-1), TILE_XY(0,-1),
+	  TILE_XY(-1,0), TILE_XY(-1,0), TILE_XY(-1,0), TILE_XY(-1,0),
+	  TILE_XY(-1,0), TILE_XY(0,1),  TILE_XY(0,1),  TILE_XY(0,1),
+	  TILE_XY(0,1),  TILE_XY(0,1),  TILE_XY(1,0),  TILE_XY(1,0),
+	  TILE_XY(1,0),  TILE_XY(1,0),  TILE_XY(1,0),  TILE_XY(1,0),
+	  TILE_XY(0,-1), TILE_XY(0,-1), TILE_XY(0,-1), TILE_XY(0,-1), 
+	  TILE_XY(0,-1), TILE_XY(0,-1), TILE_XY(-1,0), TILE_XY(-1,0),
+	  TILE_XY(-1,0), TILE_XY(-1,0), TILE_XY(-1,0), TILE_XY(-1,0),
+	  TILE_XY(-1,0), TILE_XY(0,1),  TILE_XY(0,1),  TILE_XY(0,1),
+	  TILE_XY(0,1),  TILE_XY(0,1),  TILE_XY(0,1),  TILE_XY(0,1),
+	  TILE_XY(1,0),  TILE_XY(1,0),  TILE_XY(1,0),  TILE_XY(1,0),
+	  TILE_XY(1,0),  TILE_XY(1,0),  TILE_XY(1,0),  TILE_XY(1,0),
+	  TILE_XY(0,-1), TILE_XY(0,-1), TILE_XY(0,-1), TILE_XY(0,-1),
+	  TILE_XY(0,-1), TILE_XY(0,-1), TILE_XY(0,-1), TILE_XY(0,-1), 
+	  TILE_XY(-1,0), TILE_XY(-1,0), TILE_XY(-1,0), TILE_XY(-1,0),
+	  TILE_XY(-1,0), TILE_XY(-1,0), TILE_XY(-1,0), TILE_XY(-1,0),
+	  0,
+    };
+	int offs;
+	uint tile = t->xy;
+	const TileIndexDiff *p = _statue_tiles;
+
+	SETBIT(t->statues, _current_player);
+
+	do {
+		if (DoBuildStatueOfCompany(tile))
+			return;
+		offs = *p++;
+		tile = TILE_ADD(tile, offs);
+	} while (offs);
+}
+
+static void TownActionFundBuildings(Town *t, int action)
+{
+	t->grow_counter = 1;
+	t->flags12 |= 1;
+	t->fund_buildings_months = 3;
+}
+
+static void TownActionBuyRights(Town *t, int action)
+{
+	Station *st;
+
+	FOR_ALL_STATIONS(st) {
+		if (st->xy && st->town == t && st->owner < 8 && 
+				st->owner != _current_player)
+			st->blocked_months = 12;
+	}
+
+	ModifyStationRatingAround(t->xy, _current_player, 130, 17);
+}
+
+static void TownActionBribe(Town *t, int action)
+{
+	if (!RandomRange(15)) {
+		GoodsEntry *ge;
+		Station *st;
+		int i, rating;
+
+		// set as unwanted for 6 months
+		t->unwanted[_current_player] = 6;
+
+		// set all close by station ratings to 0
+		FOR_ALL_STATIONS(st) {
+			if (st->town == t && st->owner == _current_player) {
+				for (i=0, ge = st->goods; i != NUM_CARGO; i++, ge++)
+					ge->rating = 0;
+			}
+		}
+
+		// only show errormessage to the executing player. All errors are handled command.c
+		// but this is special, because it can only 'fail' on a DC_EXEC
+		if (!_networking || (_current_player == _local_player))
+			ShowErrorMessage(STR_BRIBE_FAILED_2, STR_BRIBE_FAILED, 0, 0);
+
+		/*	decrease by a lot!
+		 *	ChangeTownRating is only for stuff in demolishing. Bribe failure should
+		 *	be independent of any cheat settings
+		 *	ChangeTownRating(c, -1000, -50);
+		 */
+		rating = t->ratings[_current_player];
+		if (rating > -50)
+			t->ratings[_current_player] = -50;
+	} else {
+		ChangeTownRating(t, 200, 800);
+	}
+}
+
+static TownActionProc * const _town_action_proc[] = {
+	TownActionAdvertise,
+	TownActionAdvertise,
+	TownActionAdvertise,
+	TownActionRoadRebuild,
+	TownActionBuildStatue,
+	TownActionFundBuildings,
+	TownActionBuyRights,
+	TownActionBribe
+};
+
+// p1 = town
+// p2 = action
+int32 CmdDoTownAction(int x, int y, uint32 flags, uint32 p1, uint32 p2)
+{
+	int32 cost;
+
+	SET_EXPENSES_TYPE(EXPENSES_OTHER);
+
+	cost = (_price.build_industry >> 8) * _town_action_costs[p2];
+
+	if (flags & DC_EXEC) {
+		_town_action_proc[p2](DEREF_TOWN(p1), p2);
+		InvalidateWindow(WC_TOWN_AUTHORITY, p1);
+	}
+
+	return cost;
+}
+
+static void UpdateTownGrowRate(Town *t)
+{
+	int n;
+	Station *st;
+	byte m;
+	Player *p;
+
+	// Reset player ratings if they're low
+	FOR_ALL_PLAYERS(p) {
+		if (p->is_active && t->ratings[p->index] <= 200) {
+			t->ratings[p->index] += 5;
+		}
+	}
+
+	n = 0;
+	FOR_ALL_STATIONS(st) {
+		if (GetTileDistAdv(st->xy, t->xy) <= t->radius[0]) {
+			if (st->time_since_load <= 20 || st->time_since_unload <= 20) {
+				n++;
+				if (st->owner < MAX_PLAYERS && t->ratings[st->owner] <= 1000-12)
+					t->ratings[st->owner] += 12;
+			} else {
+				if (st->owner < MAX_PLAYERS && t->ratings[st->owner] >= -1000+15)
+					t->ratings[st->owner] -= 15;
+			}
+		}
+	}
+
+	t->flags12 &= ~1;
+
+	if (t->fund_buildings_months != 0) {
+		t->fund_buildings_months--;
+		m = 60;
+	} else if (n == 0) {
+		m = 160;
+		if (!CHANCE16(1, 12))
+			return;
+	} else {
+		static const byte _grow_count_values[5] = {
+			210, 150, 110, 80, 50
+		};
+		m = _grow_count_values[min(n, 5) - 1];
+	}
+
+	if (_opt.landscape == LT_HILLY) {
+		if (GET_TILEHEIGHT(t->xy) >= _opt.snow_line &&	t->act_food == 0)
+			return;
+	} else if (_opt.landscape == LT_DESERT) {
+		if (GetMapExtraBits(t->xy) == 1 && (t->act_food==0 || t->act_paper==0))
+			return;
+	}
+
+	t->growth_rate = m;
+	if (m <= t->grow_counter)
+		t->grow_counter = m;
+
+	t->flags12 |= 1;
+}
+
+static void UpdateTownAmounts(Town *t)
+{
+	// Using +1 here to prevent overflow and division by zero
+	t->pct_pass_transported = t->new_act_pass * 256 / (t->new_max_pass + 1);
+
+	t->max_pass = t->new_max_pass; t->new_max_pass = 0;
+	t->act_pass = t->new_act_pass; t->new_act_pass = 0;
+	t->act_food = t->new_act_food; t->new_act_food = 0;
+	t->act_paper = t->new_act_paper; t->new_act_paper = 0;
+
+	// Using +1 here to prevent overflow and division by zero
+	t->pct_mail_transported = t->new_act_mail * 256 / (t->new_max_mail + 1);
+	t->max_mail = t->new_max_mail; t->new_max_mail = 0;
+	t->act_mail = t->new_act_mail; t->new_act_mail = 0;
+
+	InvalidateWindow(WC_TOWN_VIEW, t->index);
+}
+
+static void UpdateTownUnwanted(Town *t)
+{
+	Player *p;
+
+	FOR_ALL_PLAYERS(p) {
+		if (t->unwanted[p->index] > 0)
+			t->unwanted[p->index]--;
+	}
+}
+
+bool CheckIfAuthorityAllows(uint tile)
+{
+	Town *t;
+
+	if (_current_player >= MAX_PLAYERS)
+		return true;
+
+	t = ClosestTownFromTile(tile, _patches.dist_local_authority);
+	if (t == NULL)
+		return true;
+
+	if (t->ratings[_current_player] > -200)
+		return true;
+
+	_error_message = STR_2009_LOCAL_AUTHORITY_REFUSES;
+	SET_DPARAM16(0, t->index);
+
+	return false;
+}
+
+
+Town *ClosestTownFromTile(uint tile, uint threshold)
+{
+	Town *t;
+	uint dist, best = threshold;
+	Town *best_town = NULL;
+	
+	FOR_ALL_TOWNS(t) {
+		if (t->xy != 0) {
+			dist = GetTileDist(tile, t->xy);
+			if (dist < best) {
+				best = dist;
+				best_town = t;
+			}
+		}
+	}
+
+	return best_town;
+}
+
+void ChangeTownRating(Town *t, int add, int max)
+{
+	int rating;
+
+	//	if magic_bulldozer cheat is active, town doesn't penaltize for removing stuff
+	if (t == NULL || _current_player >= MAX_PLAYERS || (_cheats.magic_bulldozer.value && add < 0)	)
+		return;
+
+	SETBIT(t->have_ratings, _current_player);
+	
+	rating = t->ratings[_current_player];
+	
+	if (add < 0) {
+		if (rating > max) {
+			rating += add;
+			if (rating < max) rating = max;
+		}
+	} else {
+		if (rating < max) {
+			rating += add;
+			if (rating > max) rating = max;
+		}
+	}
+	t->ratings[_current_player] = rating;
+}
+
+/*	penalty for removing town-owned stuff */
+static const int _default_rating_settings [3][3] = {
+	// ROAD_REMOVE, TUNNELBRIDGE_REMOVE, INDUSTRY_REMOVE
+	{  0, 128, 384},	// Permissive
+	{ 48, 192, 480},	// Neutral
+	{ 96, 384, 768},	// Hostile
+};
+
+bool CheckforTownRating(uint tile, uint32 flags, Town *t, byte type)
+{
+	int modemod;
+
+	//	if magic_bulldozer cheat is active, town doesn't restrict your destructive actions
+	if (t == NULL || _current_player >= MAX_PLAYERS || _cheats.magic_bulldozer.value)
+		return true;
+
+	/*	check if you're allowed to remove the street/bridge/tunnel/industry
+	 *	owned by a town	no removal if rating is lower than ... depends now on 
+	 *	difficulty setting. Minimum town rating selected by difficulty level
+	 */
+	modemod = _default_rating_settings[_opt_mod_ptr->diff.town_council_tolerance][type];
+
+	if (t->ratings[_current_player] < 16 + modemod && !(flags & DC_NO_TOWN_RATING)) {
+		SET_DPARAM16(0, t->index);
+		_error_message = STR_2009_LOCAL_AUTHORITY_REFUSES;
+		return false;
+	}
+
+	return true;
+}
+
+void TownsMonthlyLoop()
+{
+	Town *t;
+
+	FOR_ALL_TOWNS(t) if (t->xy != 0) {
+		if (t->road_build_months != 0)
+			t->road_build_months--;
+
+		UpdateTownGrowRate(t);
+		UpdateTownAmounts(t);
+		UpdateTownUnwanted(t);
+	}
+}
+
+void InitializeTowns()
+{
+	Subsidy *s;
+	int i;
+
+	memset(_towns, 0, sizeof(_towns));
+	for(i=0; i!=lengthof(_towns); i++)
+		_towns[i].index = i;
+
+	memset(_subsidies, 0, sizeof(_subsidies));
+	for (s=_subsidies; s != endof(_subsidies); s++)
+		s->cargo_type = 0xFF;
+
+	_cur_town_ctr = 0;
+	_town_sort_dirty = true;
+	_total_towns = 0;
+}
+
+const TileTypeProcs _tile_type_town_procs = {
+	DrawTile_Town,						/* draw_tile_proc */
+	GetSlopeZ_Town,						/* get_slope_z_proc */
+	ClearTile_Town,						/* clear_tile_proc */
+	GetAcceptedCargo_Town,		/* get_accepted_cargo_proc */
+	GetTileDesc_Town,					/* get_tile_desc_proc */
+	GetTileTrackStatus_Town,	/* get_tile_track_status_proc */
+	ClickTile_Town,						/* click_tile_proc */
+	AnimateTile_Town,					/* animate_tile_proc */
+	TileLoop_Town,						/* tile_loop_clear */
+	ChangeTileOwner_Town,			/* change_tile_owner_clear */
+	NULL,											/* get_produced_cargo_proc */
+	NULL,											/* vehicle_enter_tile_proc */
+	NULL,											/* vehicle_leave_tile_proc */
+};
+
+
+// Save and load of towns.
+static const byte _town_desc[] = {
+	SLE_VAR(Town,xy,					SLE_UINT16),
+	
+	SLE_CONDVAR(Town,population,	SLE_FILE_U16 | SLE_VAR_U32, 0, 2),
+	SLE_CONDVAR(Town,population,	SLE_UINT32, 3, 255),
+
+
+	SLE_VAR(Town,num_houses,	SLE_UINT16),
+	SLE_VAR(Town,townnametype,SLE_UINT16),
+	SLE_VAR(Town,townnameparts,SLE_UINT32),
+
+	SLE_VAR(Town,flags12,			SLE_UINT8),
+	SLE_VAR(Town,statues,			SLE_UINT8),
+
+	// sort_index_obsolete was stored here in savegame format 0 - 1
+	SLE_CONDARR(NullStruct,null,SLE_FILE_U8 | SLE_VAR_NULL, 1, 0, 1),
+
+	SLE_VAR(Town,have_ratings,SLE_UINT8),
+	SLE_ARR(Town,ratings,			SLE_INT16, 8),
+	// failed bribe attempts are stored since savegame format 4
+	SLE_CONDARR(Town,unwanted,			SLE_INT8, 8, 4,255),
+
+	SLE_VAR(Town,max_pass,		SLE_UINT16),
+	SLE_VAR(Town,max_mail,		SLE_UINT16),
+	SLE_VAR(Town,new_max_pass,SLE_UINT16),
+	SLE_VAR(Town,new_max_mail,SLE_UINT16),
+	SLE_VAR(Town,act_pass,		SLE_UINT16),
+	SLE_VAR(Town,act_mail,		SLE_UINT16),
+	SLE_VAR(Town,new_act_pass,SLE_UINT16),
+	SLE_VAR(Town,new_act_mail,SLE_UINT16),
+
+	SLE_VAR(Town,pct_pass_transported,SLE_UINT8),
+	SLE_VAR(Town,pct_mail_transported,SLE_UINT8),
+
+	SLE_VAR(Town,act_food,		SLE_UINT16),
+	SLE_VAR(Town,act_paper,		SLE_UINT16),
+	SLE_VAR(Town,new_act_food,SLE_UINT16),
+	SLE_VAR(Town,new_act_paper,SLE_UINT16),
+
+	SLE_VAR(Town,time_until_rebuild,		SLE_UINT8),
+	SLE_VAR(Town,grow_counter,					SLE_UINT8),
+	SLE_VAR(Town,growth_rate,						SLE_UINT8),
+	SLE_VAR(Town,fund_buildings_months,	SLE_UINT8),
+	SLE_VAR(Town,road_build_months,			SLE_UINT8),
+
+	// reserve extra space in savegame here. (currently 32 bytes)
+	SLE_CONDARR(NullStruct,null,SLE_FILE_U64 | SLE_VAR_NULL, 4, 2, 255),
+
+	SLE_END()
+};
+
+static void Save_TOWN()
+{
+	Town *t;
+
+	FOR_ALL_TOWNS(t) if (t->xy != 0) {
+		SlSetArrayIndex(t->index);
+		SlObject(t, _town_desc);
+	}
+}
+
+static void Load_TOWN()
+{
+	int index;
+	while ((index = SlIterateArray()) != -1) {
+		Town *t = DEREF_TOWN(index);
+		SlObject(t, _town_desc);
+		_total_towns++;
+	}
+}
+
+void AfterLoadTown()
+{
+	Town *t;
+	FOR_ALL_TOWNS(t) {
+		if (t->xy != 0) {
+			UpdateTownRadius(t);
+			UpdateTownVirtCoord(t);
+		}
+	}
+	_town_sort_dirty = true;
+}
+
+
+const ChunkHandler _town_chunk_handlers[] = {
+	{ 'CITY', Save_TOWN, Load_TOWN, CH_ARRAY | CH_LAST},
+};
+
+