(svn r7759) -Merge: makefile rewrite. This merge features:

 - A proper ./configure, so everything needs to be configured only once, not for every make.
 - Usage of makedepend when available. This greatly reduces the time needed for generating the dependencies.
 - A generator for all project files. There is a single file with sources, which is used to generate Makefiles and the project files for MSVC.
 - Proper support for OSX universal binaries.
 - Object files for non-MSVC compiles are also placed in separate directories, making is faster to switch between debug and release compiles and it does not touch the directory with the source files.
 - Functionality to make a bundle of all needed files for for example a nightly or distribution of a binary with all needed GRFs and language files.

Note: as this merge moves almost all files, it is recommended to make a backup of your working copy before updating your working copy.

1 files changed, 0 insertions, 1965 deletions

diff --git a/town_cmd.c b/town_cmd.c
deleted file mode 100644
index 9c00cf25a..000000000
--- a/town_cmd.c
+++ /dev/null
@@ -1,1965 +0,0 @@
-/* $Id$ */
-
-#include "stdafx.h"
-#include "openttd.h"
-#include "functions.h"
-#include "strings.h"
-#include "road_map.h"
-#include "table/strings.h"
-#include "table/sprites.h"
-#include "map.h"
-#include "tile.h"
-#include "town_map.h"
-#include "tunnel_map.h"
-#include "viewport.h"
-#include "town.h"
-#include "command.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"
-#include "unmovable_map.h"
-#include "water_map.h"
-#include "variables.h"
-#include "bridge.h"
-#include "bridge_map.h"
-#include "date.h"
-#include "table/town_land.h"
-#include "genworld.h"
-
-/**
- * Called if a new block is added to the town-pool
- */
-static void TownPoolNewBlock(uint start_item)
-{
-	Town *t;
-
-	/* We don't use FOR_ALL here, because FOR_ALL skips invalid items.
-	 * TODO - This is just a temporary stage, this will be removed. */
-	for (t = GetTown(start_item); t != NULL; t = (t->index + 1U < GetTownPoolSize()) ? GetTown(t->index + 1U) : NULL) t->index = start_item++;
-}
-
-/* Initialize the town-pool */
-DEFINE_OLD_POOL(Town, Town, TownPoolNewBlock, NULL)
-
-void DestroyTown(Town *t)
-{
-	Industry *i;
-	TileIndex tile;
-
-	/* Delete town authority window
-	 * and remove from list of sorted towns */
-	DeleteWindowById(WC_TOWN_VIEW, t->index);
-	_town_sort_dirty = true;
-	_total_towns--;
-
-	/* Delete all industries belonging to the town */
-	FOR_ALL_INDUSTRIES(i) if (i->town == t) DeleteIndustry(i);
-
-	/* Go through all tiles and delete those belonging to the town */
-	for (tile = 0; tile < MapSize(); ++tile) {
-		switch (GetTileType(tile)) {
-			case MP_HOUSE:
-				if (GetTownByTile(tile) == t) DoCommand(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
-				break;
-
-			case MP_STREET:
-			case MP_TUNNELBRIDGE:
-				if (IsTileOwner(tile, OWNER_TOWN) &&
-						ClosestTownFromTile(tile, (uint)-1) == t)
-					DoCommand(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
-				break;
-
-			default:
-				break;
-		}
-	}
-
-	DeleteName(t->townnametype);
-	DeleteSubsidyWithTown(t->index);
-
-	MarkWholeScreenDirty();
-}
-
-// Local
-static int _grow_town_result;
-
-static bool BuildTownHouse(Town *t, TileIndex tile);
-static void ClearTownHouse(Town *t, TileIndex tile);
-static void DoBuildTownHouse(Town *t, TileIndex tile);
-
-static void TownDrawHouseLift(const TileInfo *ti)
-{
-	AddChildSpriteScreen(SPR_LIFT, 14, 60 - GetLiftPosition(ti->tile));
-}
-
-typedef void TownDrawTileProc(const TileInfo *ti);
-static TownDrawTileProc * const _town_draw_tile_procs[1] = {
-	TownDrawHouseLift
-};
-
-
-static void DrawTile_Town(TileInfo *ti)
-{
-	const DrawBuildingsTileStruct *dcts;
-	uint32 image;
-
-	/* Retrieve pointer to the draw town tile struct */
-	{
-		/* this "randomizes" on the (up to) 4 variants of a building */
-		uint variant;
-		variant  = ti->x >> 4;
-		variant ^= ti->x >> 6;
-		variant ^= ti->y >> 4;
-		variant -= ti->y >> 6;
-		variant &= 3;
-		dcts = &_town_draw_tile_data[GetHouseType(ti->tile) << 4 | variant << 2 | GetHouseBuildingStage(ti->tile)];
-	}
-
-	if (ti->tileh != SLOPE_FLAT) DrawFoundation(ti, ti->tileh);
-	DrawGroundSprite(dcts->ground);
-
-	/* Add a house on top of the ground? */
-	image = dcts->building;
-	if (image != 0) {
-		if (_display_opt & DO_TRANS_BUILDINGS) MAKE_TRANSPARENT(image);
-
-		AddSortableSpriteToDraw(image,
-			ti->x + dcts->subtile_x,
-			ti->y + dcts->subtile_y,
-			dcts->width + 1,
-			dcts->height + 1,
-			dcts->dz,
-			ti->z
-		);
-
-		if (_display_opt & DO_TRANS_BUILDINGS) return;
-	}
-
-	{
-		int proc = dcts->draw_proc - 1;
-
-		if (proc >= 0) _town_draw_tile_procs[proc](ti);
-	}
-}
-
-static uint GetSlopeZ_Town(TileIndex tile, uint x, uint y)
-{
-	return GetTileMaxZ(tile);
-}
-
-static Slope GetSlopeTileh_Town(TileIndex tile, Slope tileh)
-{
-	return SLOPE_FLAT;
-}
-
-static void AnimateTile_Town(TileIndex tile)
-{
-	int pos, dest;
-
-	if (_tick_counter & 3) return;
-
-	// If the house is not one with a lift anymore, then stop this animating.
-	// Not exactly sure when this happens, but probably when a house changes.
-	// Before this was just a return...so it'd leak animated tiles..
-	// That bug seems to have been here since day 1??
-	if (!(_housetype_extra_flags[GetHouseType(tile)] & 0x20)) {
-		DeleteAnimatedTile(tile);
-		return;
-	}
-
-	if (!IsLiftMoving(tile)) {
-		int i;
-
-		/** Building has 6 floors, number 0 .. 6, where 1 is illegal.
-		 *  This is due to the fact that the first floor is, in the graphics,
-		 *  the height of 2 'normal' floors.
-		 *  Furthermore, there are 6 lift positions from floor N (incl) to floor N + 1 (excl) */
-		do {
-			i = (Random() & 7) - 1;
-		} while (i < 0 || i == 1 || i * 6 == GetLiftPosition(tile));
-
-		SetLiftDestination(tile, i);
-	}
-
-	pos = GetLiftPosition(tile);
-	dest = GetLiftDestination(tile) * 6;
-	pos += (pos < dest) ? 1 : -1;
-	SetLiftPosition(tile, pos);
-
-	if (pos == dest) HaltLift(tile);
-
-	MarkTileDirtyByTile(tile);
-}
-
-static void UpdateTownRadius(Town *t);
-
-static bool IsCloseToTown(TileIndex tile, uint dist)
-{
-	const Town* t;
-
-	FOR_ALL_TOWNS(t) {
-		if (DistanceManhattan(tile, t->xy) < dist) return true;
-	}
-	return false;
-}
-
-static void MarkTownSignDirty(Town *t)
-{
-	MarkAllViewportsDirty(
-		t->sign.left-6,
-		t->sign.top-3,
-		t->sign.left+t->sign.width_1*4+12,
-		t->sign.top + 45
-	);
-}
-
-void UpdateTownVirtCoord(Town *t)
-{
-	Point pt;
-
-	MarkTownSignDirty(t);
-	pt = RemapCoords2(TileX(t->xy) * TILE_SIZE, TileY(t->xy) * TILE_SIZE);
-	SetDParam(0, t->index);
-	SetDParam(1, t->population);
-	UpdateViewportSignPos(&t->sign, pt.x, pt.y - 24,
-		_patches.population_in_label ? STR_TOWN_LABEL_POP : STR_TOWN_LABEL);
-	MarkTownSignDirty(t);
-}
-
-static void ChangePopulation(Town *t, int mod)
-{
-	t->population += mod;
-	InvalidateWindow(WC_TOWN_VIEW, t->index);
-	UpdateTownVirtCoord(t);
-
-	if (_town_sort_order & 2) _town_sort_dirty = true;
-}
-
-uint32 GetWorldPopulation(void)
-{
-	uint32 pop;
-	const Town* t;
-
-	pop = 0;
-	FOR_ALL_TOWNS(t) pop += t->population;
-	return pop;
-}
-
-static void MakeSingleHouseBigger(TileIndex tile)
-{
-	assert(IsTileType(tile, MP_HOUSE));
-
-	if (LiftHasDestination(tile)) return;
-
-	IncHouseConstructionTick(tile);
-	if (GetHouseConstructionTick(tile) != 0) return;
-
-	IncHouseBuildingStage(tile);  /*increase construction stage of one more step*/
-
-	if (GetHouseBuildingStage(tile) == TOWN_HOUSE_COMPLETED){
-		/*Now, construction is completed.  Can add population of building to the town*/
-		ChangePopulation(GetTownByTile(tile), _housetype_population[GetHouseType(tile)]);
-	}
-	MarkTileDirtyByTile(tile);
-}
-
-static void MakeTownHouseBigger(TileIndex tile)
-{
-	uint flags = _house_more_flags[GetHouseType(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(TileIndex tile)
-{
-	int house;
-	Town *t;
-	uint32 r;
-
-	if (GetHouseBuildingStage(tile) != TOWN_HOUSE_COMPLETED) {
-		/*Construction is not completed. See if we can go further in construction*/
-		MakeTownHouseBigger(tile);
-		return;
-	}
-
-	house = GetHouseType(tile);
-	if ((_housetype_extra_flags[house] & 0x20) && !LiftHasDestination(tile) && CHANCE16(1, 2) && AddAnimatedTile(tile)) BeginLiftMovement(tile);
-
-	t = GetTownByTile(tile);
-
-	r = Random();
-
-	if (GB(r, 0, 8) < _housetype_population[house]) {
-		uint amt = GB(r, 0, 8) / 8 + 1;
-		uint 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 (GB(r, 8, 8) < _housetype_mailamount[house] ) {
-		uint amt = GB(r, 8, 8) / 8 + 1;
-		uint 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 && HASBIT(t->flags12, TOWN_IS_FUNDED) && --t->time_until_rebuild == 0) {
-		t->time_until_rebuild = GB(r, 16, 6) + 130;
-
-		_current_player = OWNER_TOWN;
-
-		ClearTownHouse(t, tile);
-
-		// rebuild with another house?
-		if (GB(r, 24, 8) >= 12) DoBuildTownHouse(t, tile);
-
-		_current_player = OWNER_NONE;
-	}
-}
-
-static void ClickTile_Town(TileIndex tile)
-{
-	/* not used */
-}
-
-static int32 ClearTile_Town(TileIndex 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 = GetHouseType(tile);
-	cost = _price.remove_house * _housetype_remove_cost[house] >> 8;
-
-	rating = _housetype_remove_ratingmod[house];
-	_cleared_town_rating += rating;
-	_cleared_town = t = GetTownByTile(tile);
-
-	if (IsValidPlayer(_current_player)) {
-		if (rating > t->ratings[_current_player] && !(flags & DC_NO_TOWN_RATING) && !_cheats.magic_bulldozer.value) {
-			SetDParam(0, t->index);
-			return_cmd_error(STR_2009_LOCAL_AUTHORITY_REFUSES);
-		}
-	}
-
-	if (flags & DC_EXEC) {
-		ChangeTownRating(t, -rating, RATING_HOUSE_MINIMUM);
-		ClearTownHouse(t, tile);
-	}
-
-	return cost;
-}
-
-static void GetAcceptedCargo_Town(TileIndex tile, AcceptedCargo ac)
-{
-	byte type = GetHouseType(tile);
-
-	ac[CT_PASSENGERS] = _housetype_cargo_passengers[type];
-	ac[CT_MAIL]       = _housetype_cargo_mail[type];
-	ac[CT_GOODS]      = _housetype_cargo_goods[type];
-	ac[CT_FOOD]       = _housetype_cargo_food[type];
-}
-
-static void GetTileDesc_Town(TileIndex tile, TileDesc *td)
-{
-	td->str = _town_tile_names[GetHouseType(tile)];
-	if (GetHouseBuildingStage(tile) != TOWN_HOUSE_COMPLETED) {
-		SetDParamX(td->dparam, 0, td->str);
-		td->str = STR_2058_UNDER_CONSTRUCTION;
-	}
-
-	td->owner = OWNER_TOWN;
-}
-
-static uint32 GetTileTrackStatus_Town(TileIndex tile, TransportType mode)
-{
-	/* not used */
-	return 0;
-}
-
-static void ChangeTileOwner_Town(TileIndex tile, PlayerID old_player, PlayerID new_player)
-{
-	/* not used */
-}
-
-
-static const TileIndexDiffC _roadblock_tileadd[] = {
-	{ 0, -1},
-	{ 1,  0},
-	{ 0,  1},
-	{-1,  0},
-
-	// Store the first 3 elements again.
-	// Lets us rotate without using &3.
-	{ 0, -1},
-	{ 1,  0},
-	{ 0,  1}
-};
-
-
-static bool GrowTown(Town *t);
-
-static void TownTickHandler(Town *t)
-{
-	if (HASBIT(t->flags12, TOWN_IS_FUNDED)) {
-		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(void)
-{
-	if (_game_mode == GM_EDITOR) return;
-
-	/* Make sure each town's tickhandler invocation frequency is about the
-	 * same - TOWN_GROWTH_FREQUENCY - independent on the number of towns. */
-	for (_cur_town_iter += GetMaxTownIndex() + 1;
-	     _cur_town_iter >= TOWN_GROWTH_FREQUENCY;
-	     _cur_town_iter -= TOWN_GROWTH_FREQUENCY) {
-		uint32 i = _cur_town_ctr;
-
-		if (++_cur_town_ctr > GetMaxTownIndex())
-			_cur_town_ctr = 0;
-
-		if (IsValidTownID(i)) TownTickHandler(GetTown(i));
-	}
-}
-
-static RoadBits GetTownRoadMask(TileIndex tile)
-{
-	TrackBits b = GetAnyRoadTrackBits(tile);
-	RoadBits r = 0;
-
-	if (b & TRACK_BIT_X)     r |= ROAD_X;
-	if (b & TRACK_BIT_Y)     r |= ROAD_Y;
-	if (b & TRACK_BIT_UPPER) r |= ROAD_NE | ROAD_NW;
-	if (b & TRACK_BIT_LOWER) r |= ROAD_SE | ROAD_SW;
-	if (b & TRACK_BIT_LEFT)  r |= ROAD_NW | ROAD_SW;
-	if (b & TRACK_BIT_RIGHT) r |= ROAD_NE | ROAD_SE;
-	return r;
-}
-
-static bool IsRoadAllowedHere(TileIndex tile, int dir)
-{
-	Slope k;
-	Slope 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 (GetAnyRoadTrackBits(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 (CmdFailed(DoCommand(tile, (dir & 1 ? ROAD_X : ROAD_Y), 0, DC_AUTO, CMD_BUILD_ROAD)) &&
-					CmdFailed(DoCommand(tile, 0, 0, DC_AUTO, CMD_LANDSCAPE_CLEAR)))
-				return false;
-		}
-
-		slope = GetTileSlope(tile, NULL);
-		if (slope == SLOPE_FLAT) {
-no_slope:
-			// Tile has no slope
-			// Disallow the road if any neighboring tile has a road.
-			if (HASBIT(GetTownRoadMask(TILE_ADD(tile, ToTileIndexDiff(_roadblock_tileadd[dir+1]))), dir^2) ||
-					HASBIT(GetTownRoadMask(TILE_ADD(tile, ToTileIndexDiff(_roadblock_tileadd[dir+3]))), dir^2) ||
-					HASBIT(GetTownRoadMask(TILE_ADD(tile, ToTileIndexDiff(_roadblock_tileadd[dir+1]) + ToTileIndexDiff(_roadblock_tileadd[dir+2]))), dir) ||
-					HASBIT(GetTownRoadMask(TILE_ADD(tile, ToTileIndexDiff(_roadblock_tileadd[dir+3]) + ToTileIndexDiff(_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.
-		k = (dir & 1) ? SLOPE_NE : SLOPE_NW;
-		if (k != slope && ComplementSlope(k) != slope) {
-			uint32 r = Random();
-
-			if (CHANCE16I(1, 8, r) && !_generating_world) {
-				int32 res;
-
-				if (CHANCE16I(1, 16, r)) {
-					res = DoCommand(tile, slope, 0, DC_EXEC | DC_AUTO | DC_NO_WATER,
-					                      CMD_TERRAFORM_LAND);
-				} else {
-					res = DoCommand(tile, slope ^ 0xF, 1, DC_EXEC | DC_AUTO | DC_NO_WATER,
-					                      CMD_TERRAFORM_LAND);
-				}
-				if (CmdFailed(res) && CHANCE16I(1, 3, r)) {
-					// We can consider building on the slope, though.
-					goto no_slope;
-				}
-			}
-			return false;
-		}
-		return true;
-	}
-}
-
-static bool TerraformTownTile(TileIndex tile, int edges, int dir)
-{
-	int32 r;
-
-	TILE_ASSERT(tile);
-
-	r = DoCommand(tile, edges, dir, DC_AUTO | DC_NO_WATER, CMD_TERRAFORM_LAND);
-	if (CmdFailed(r) || r >= 126 * 16) return false;
-	DoCommand(tile, edges, dir, DC_AUTO | DC_NO_WATER | DC_EXEC, CMD_TERRAFORM_LAND);
-	return true;
-}
-
-static void LevelTownLand(TileIndex tile)
-{
-	Slope tileh;
-
-	TILE_ASSERT(tile);
-
-	// Don't terraform if land is plain or if there's a house there.
-	if (IsTileType(tile, MP_HOUSE)) return;
-	tileh = GetTileSlope(tile, NULL);
-	if (tileh == SLOPE_FLAT) return;
-
-	// First try up, then down
-	if (!TerraformTownTile(tile, ~tileh & 0xF, 1)) {
-		TerraformTownTile(tile, tileh & 0xF, 0);
-	}
-}
-
-static void GrowTownInTile(TileIndex* tile_ptr, RoadBits mask, int block, Town* t1)
-{
-	RoadBits rcmd;
-	TileIndex tmptile;
-	DiagDirection i;
-	int j;
-	TileIndex tile = *tile_ptr;
-
-	TILE_ASSERT(tile);
-
-	if (mask == 0) {
-		int a;
-		int b;
-
-		// Tile has no road. First reset the status counter
-		// to say that this is the last iteration.
-		_grow_town_result = 0;
-
-		// 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;
-		if (CHANCE16(1, 4)) {
-			do {
-				a = GB(Random(), 0, 2);
-			} while (a == b);
-		}
-
-		if (!IsRoadAllowedHere(TILE_ADD(tile, ToTileIndexDiff(_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 (!IsTileType(TILE_ADD(tile, ToTileIndexDiff(_roadblock_tileadd[a + 1])), MP_HOUSE) &&
-					!IsTileType(TILE_ADD(tile, ToTileIndexDiff(_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 {
-		int i;
-
-		// Reached a tunnel/bridge? Then continue at the other side of it.
-		if (IsTileType(tile, MP_TUNNELBRIDGE)) {
-			if (IsTunnel(tile) && GetTunnelTransportType(tile) == TRANSPORT_ROAD) {
-				*tile_ptr = GetOtherTunnelEnd(tile);
-			} else if (IsBridge(tile) && GetBridgeTransportType(tile) == TRANSPORT_ROAD) {
-				*tile_ptr = GetOtherBridgeEnd(tile);
-			}
-			return;
-		}
-
-		// Possibly extend the road in a direction.
-		// Randomize a direction and if it has a road, bail out.
-		i = GB(Random(), 0, 2);
-		if (HASBIT(mask, i)) return;
-
-		// This is the tile we will reach if we extend to this direction.
-		tmptile = TILE_ADD(tile, ToTileIndexDiff(_roadblock_tileadd[i]));
-
-		// Don't do it if it reaches to water.
-		if (IsClearWaterTile(tmptile)) 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 (!IsTileType(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;
-	}
-
-	// Return if a water tile
-	if (IsClearWaterTile(tile)) return;
-
-	// Determine direction of slope,
-	//  and build a road if not a special slope.
-	switch (GetTileSlope(tile, NULL)) {
-		case SLOPE_SW: i = DIAGDIR_NE; break;
-		case SLOPE_SE: i = DIAGDIR_NW; break;
-		case SLOPE_NW: i = DIAGDIR_SE; break;
-		case SLOPE_NE: i = DIAGDIR_SW; break;
-
-		default:
-build_road_and_exit:
-			if (!CmdFailed(DoCommand(tile, rcmd, t1->index, DC_EXEC | DC_AUTO | DC_NO_WATER, CMD_BUILD_ROAD))) {
-				_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 + TileOffsByDiagDir(i));
-	} while (IsClearWaterTile(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 (!CmdFailed(DoCommand(tile, tmptile, 0x8000 + bridge_type, DC_EXEC | DC_AUTO, CMD_BUILD_BRIDGE)))
-					_grow_town_result = -1;
-
-				// obviously, if building any bridge would fail, there is no need to try other bridge-types
-				return;
-			}
-		} while (--j != 0);
-	}
-}
-
-// Returns true if a house was built, or no if the build failed.
-static int GrowTownAtRoad(Town *t, TileIndex tile)
-{
-	int block = 5; // special case
-
-	TILE_ASSERT(tile);
-
-	// Number of times to search.
-	_grow_town_result = 10 + t->num_houses * 4 / 9;
-
-	do {
-		// Get a bitmask of the road blocks on a tile
-		RoadBits 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 += ToTileIndexDiff(_roadblock_tileadd[block]);
-
-		if (IsTileType(tile, MP_STREET)) {
-			/* Don't allow building over roads of other cities */
-			if (IsTileOwner(tile, OWNER_TOWN) && GetTownByTile(tile) != t) {
-				_grow_town_result = -1;
-			} else if (_game_mode == GM_EDITOR) {
-				/* If we are in the SE, and this road-piece has no town owner yet, it just found an
-				 * owner :) (happy happy happy road now) */
-				SetTileOwner(tile, OWNER_TOWN);
-				SetTownIndex(tile, t->index);
-			}
-		}
-
-		// 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 RoadBits GenRandomRoadBits(void)
-{
-	uint32 r = Random();
-	uint a = GB(r, 0, 2);
-	uint b = GB(r, 8, 2);
-	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.
-static bool GrowTown(Town *t)
-{
-	TileIndex tile;
-	const TileIndexDiffC *ptr;
-	PlayerID old_player;
-
-	static const TileIndexDiffC _town_coord_mod[] = {
-		{-1,  0},
-		{ 1,  1},
-		{ 1, -1},
-		{-1, -1},
-		{-1,  0},
-		{ 0,  2},
-		{ 2,  0},
-		{ 0, -2},
-		{-1, -1},
-		{-2,  2},
-		{ 2,  2},
-		{ 2, -2},
-		{ 0,  0}
-	};
-
-	// Current player is a town
-	old_player = _current_player;
-	_current_player = OWNER_TOWN;
-
-	// Find a road that we can base the construction on.
-	tile = t->xy;
-	for (ptr = _town_coord_mod; ptr != endof(_town_coord_mod); ++ptr) {
-		if (GetAnyRoadTrackBits(tile) != 0) {
-			int r = GrowTownAtRoad(t, tile);
-			_current_player = old_player;
-			return r;
-		}
-		tile = TILE_ADD(tile, ToTileIndexDiff(*ptr));
-	}
-
-	// No road available, try to build a random road block by
-	// clearing some land and then building a road there.
-	tile = t->xy;
-	for (ptr = _town_coord_mod; ptr != endof(_town_coord_mod); ++ptr) {
-		/* Only work with plain land that not already has a house */
-		if (!IsTileType(tile, MP_HOUSE) && GetTileSlope(tile, NULL) == SLOPE_FLAT) {
-			if (!CmdFailed(DoCommand(tile, 0, 0, DC_AUTO, CMD_LANDSCAPE_CLEAR))) {
-				DoCommand(tile, GenRandomRoadBits(), t->index, DC_EXEC | DC_AUTO, CMD_BUILD_ROAD);
-				_current_player = old_player;
-				return true;
-			}
-		}
-		tile = TILE_ADD(tile, ToTileIndexDiff(*ptr));
-	}
-
-	_current_player = old_player;
-	return false;
-}
-
-static void UpdateTownRadius(Town *t)
-{
-	static const uint16 _town_radius_data[23][5] = {
-		{  4,  0,  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}, // 20
-		{ 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}, // 40
-		{ 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}, // 60
-		{ 81, 64,  0, 36,  9},
-		{ 81, 64,  0, 36, 16},
-		{100, 81,  0, 49, 16},
-		{100, 81,  0, 49, 25},
-		{121, 81,  0, 49, 25}, // 80
-		{121, 81,  0, 49, 25},
-		{121, 81,  0, 49, 36}, // 88
-	};
-
-	if (t->num_houses < 92) {
-		memcpy(t->radius, _town_radius_data[t->num_houses / 4], sizeof(t->radius));
-	} else {
-		int mass = t->num_houses / 8;
-		// At least very roughly extrapolate. Empirical numbers dancing between
-		// overwhelming by cottages and skyscrapers outskirts.
-		t->radius[0] = mass * mass;
-		// Actually we are proportional to sqrt() but that's right because
-		// we are covering an area.
-		t->radius[1] = mass * 7;
-		t->radius[2] = 0;
-		t->radius[3] = mass * 4;
-		t->radius[4] = mass * 3;
-		//debug("%d (->%d): %d %d %d %d\n", t->num_houses, mass, t->radius[0], t->radius[1], t->radius[3], t->radius[4]);
-	}
-}
-
-static bool CreateTownName(uint32 *townnameparts)
-{
-	Town *t2;
-	char buf1[64];
-	char buf2[64];
-	uint32 r;
-	/* Do not set too low tries, since when we run out of names, we loop
-	 * for #tries only one time anyway - then we stop generating more
-	 * towns. Do not show it too high neither, since looping through all
-	 * the other towns may take considerable amount of time (10000 is
-	 * too much). */
-	int tries = 1000;
-	uint16 townnametype = SPECSTR_TOWNNAME_START + _opt.town_name;
-
-	assert(townnameparts);
-
-	for (;;) {
-restart:
-		r = Random();
-
-		SetDParam(0, r);
-		GetString(buf1, townnametype, lastof(buf1));
-
-		// Check size and width
-		if (strlen(buf1) >= 31 || GetStringBoundingBox(buf1).width > 130) continue;
-
-		FOR_ALL_TOWNS(t2) {
-			// We can't just compare the numbers since
-			// several numbers may map to a single name.
-			SetDParam(0, t2->index);
-			GetString(buf2, STR_TOWN, lastof(buf2));
-			if (strcmp(buf1, buf2) == 0) {
-				if (tries-- < 0) return false;
-				goto restart;
-			}
-		}
-		*townnameparts = r;
-		return true;
-	}
-}
-
-void UpdateTownMaxPass(Town *t)
-{
-	t->max_pass = t->population >> 3;
-	t->max_mail = t->population >> 4;
-}
-
-static void DoCreateTown(Town *t, TileIndex tile, uint32 townnameparts, uint size_mode)
-{
-	int x, i;
-
-	// clear the town struct
-	i = t->index;
-	memset(t, 0, sizeof(Town));
-	t->index = i;
-	_total_towns++;
-
-	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_water = 0;
-	t->act_food = 0;
-	t->act_water = 0;
-
-	for (i = 0; i != MAX_PLAYERS; i++)
-		t->ratings[i] = 500;
-
-	t->have_ratings = 0;
-	t->exclusivity = (byte)-1;
-	t->exclusive_counter = 0;
-	t->statues = 0;
-
-	t->townnametype = SPECSTR_TOWNNAME_START + _opt.town_name;
-	t->townnameparts = townnameparts;
-
-	UpdateTownVirtCoord(t);
-	_town_sort_dirty = true;
-
-	if (size_mode == 0) {
-		x = (Random() & 0xF) + 8;
-	} else {
-		x = (size_mode - 1) * 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(void)
-{
-	Town *t;
-
-	/* We don't use FOR_ALL here, because FOR_ALL skips invalid items.
-	 * TODO - This is just a temporary stage, this will be removed. */
-	for (t = GetTown(0); t != NULL; t = (t->index + 1U < GetTownPoolSize()) ? GetTown(t->index + 1U) : NULL) {
-		if (!IsValidTown(t)) {
-			TownID index = t->index;
-
-			memset(t, 0, sizeof(Town));
-			t->index = index;
-
-			return t;
-		}
-	}
-
-	/* Check if we can add a block to the pool */
-	if (AddBlockToPool(&_Town_pool))
-		return AllocateTown();
-
-	return NULL;
-}
-
-/** Create a new town.
- * This obviously only works in the scenario editor. Function not removed
- * as it might be possible in the future to fund your own town :)
- * @param tile coordinates where town is built
- * @param p1 size of the town (0 = random, 1 = small, 2 = medium, 3 = large)
- * @param p2 unused
- */
-int32 CmdBuildTown(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
-{
-	Town *t;
-	uint32 townnameparts;
-
-	/* Only in the scenario editor */
-	if (_game_mode != GM_EDITOR) return CMD_ERROR;
-
-	SET_EXPENSES_TYPE(EXPENSES_OTHER);
-
-	// Check if too close to the edge of map
-	if (DistanceFromEdge(tile) < 12)
-		return_cmd_error(STR_0237_TOO_CLOSE_TO_EDGE_OF_MAP);
-
-	// Can only build on clear flat areas, possibly with trees.
-	if ((!IsTileType(tile, MP_CLEAR) && !IsTileType(tile, MP_TREES)) || GetTileSlope(tile, NULL) != SLOPE_FLAT) {
-		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);
-
-	// Get a unique name for the town.
-	if (!CreateTownName(&townnameparts))
-		return_cmd_error(STR_023A_TOO_MANY_TOWNS);
-
-	// 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, townnameparts, p1);
-		_generating_world = false;
-	}
-	return 0;
-}
-
-Town *CreateRandomTown(uint attempts, uint size_mode)
-{
-	TileIndex tile;
-	Town *t;
-	uint32 townnameparts;
-
-	do {
-		// Generate a tile index not too close from the edge
-		tile = RandomTile();
-		if (DistanceFromEdge(tile) < 20) continue;
-
-		// Make sure the tile is plain
-		if (!IsTileType(tile, MP_CLEAR) || GetTileSlope(tile, NULL) != SLOPE_FLAT) continue;
-
-		// Check not too close to a town
-		if (IsCloseToTown(tile, 20)) continue;
-
-		// Get a unique name for the town.
-		if (!CreateTownName(&townnameparts)) break;
-
-		// Allocate a town struct
-		t = AllocateTown();
-		if (t == NULL) break;
-
-		DoCreateTown(t, tile, townnameparts, size_mode);
-		return t;
-	} while (--attempts);
-	return NULL;
-}
-
-static const byte _num_initial_towns[3] = {11, 23, 46};
-
-bool GenerateTowns(void)
-{
-	uint num = 0;
-	uint n = ScaleByMapSize(_num_initial_towns[_opt.diff.number_towns] + (Random() & 7));
-
-	SetGeneratingWorldProgress(GWP_TOWN, n);
-
-	do {
-		IncreaseGeneratingWorldProgress(GWP_TOWN);
-		// try 20 times to create a random-sized town for the first loop.
-		if (CreateRandomTown(20, 0) != NULL) num++;
-	} while (--n);
-
-	// give it a last try, but now more aggressive
-	if (num == 0 && CreateRandomTown(10000, 0) == NULL) {
-		if (GetNumTowns() == 0) {
-			/* XXX - can we handle that more gracefully? */
-			if (_game_mode != GM_EDITOR) error("Could not generate any town");
-
-			return false;
-		}
-	}
-
-	return true;
-}
-
-static bool CheckBuildHouseMode(TileIndex tile, Slope tileh, int mode)
-{
-	int b;
-	Slope slope;
-
-	static const byte _masks[8] = {
-		0xC,0x3,0x9,0x6,
-		0x3,0xC,0x6,0x9,
-	};
-
-	slope = GetTileSlope(tile, NULL);
-	if (IsSteepSlope(slope)) return false;
-
-	if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) return false;
-
-	b = 0;
-	if ((slope != SLOPE_FLAT && ~slope & _masks[mode])) b = ~b;
-	if ((tileh != SLOPE_FLAT && ~tileh & _masks[mode+4])) b = ~b;
-	if (b)
-		return false;
-
-	return !CmdFailed(DoCommand(tile, 0, 0, DC_EXEC | DC_AUTO | DC_NO_WATER, CMD_LANDSCAPE_CLEAR));
-}
-
-
-uint GetTownRadiusGroup(const Town* t, TileIndex tile)
-{
-	uint dist = DistanceSquare(tile, t->xy);
-	uint smallest;
-	uint i;
-
-	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(TileIndex tile)
-{
-	int i;
-
-	static const TileIndexDiffC _tile_add[] = {
-		{0    , 0    },
-		{0 - 0, 1 - 0},
-		{1 - 0, 0 - 1},
-		{1 - 1, 1 - 0}
-	};
-
-	for (i = 0; i != 4; i++) {
-		tile += ToTileIndexDiff(_tile_add[i]);
-
-		if (GetTileSlope(tile, NULL) != SLOPE_FLAT) return false;
-
-		if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) return false;
-
-		if (CmdFailed(DoCommand(tile, 0, 0, DC_EXEC | DC_AUTO | DC_NO_WATER | DC_FORCETEST, CMD_LANDSCAPE_CLEAR)))
-			return false;
-	}
-
-	return true;
-}
-
-static void DoBuildTownHouse(Town *t, TileIndex tile)
-{
-	int i;
-	uint bitmask;
-	int house;
-	Slope slope;
-	uint z;
-	uint oneof = 0;
-
-	// 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.
-			switch (house) {
-				case HOUSE_TEMP_CHURCH:
-				case HOUSE_ARCT_CHURCH:
-				case HOUSE_SNOW_CHURCH:
-				case HOUSE_TROP_CHURCH:
-				case HOUSE_TOY_CHURCH:
-					SETBIT(oneof, TOWN_HAS_CHURCH);
-					break;
-				case HOUSE_STADIUM:
-				case HOUSE_MODERN_STADIUM:
-					SETBIT(oneof, TOWN_HAS_STADIUM);
-					break;
-				default:
-					oneof = 0;
-					break;
-			}
-
-			if (HASBITS(t->flags12 , oneof)) continue;
-
-			// Make sure there is no slope?
-			if (_housetype_extra_flags[house] & 0x12 && slope != SLOPE_FLAT) continue;
-
-			if (_housetype_extra_flags[house] & 0x10) {
-				if (CheckFree2x2Area(tile) ||
-						CheckFree2x2Area(tile += TileDiffXY(-1,  0)) ||
-						CheckFree2x2Area(tile += TileDiffXY( 0, -1)) ||
-						CheckFree2x2Area(tile += TileDiffXY( 1,  0))) {
-					break;
-				}
-				tile += TileDiffXY(0, 1);
-			} else if (_housetype_extra_flags[house] & 4) {
-				if (CheckBuildHouseMode(tile + TileDiffXY(1, 0), slope, 0)) break;
-
-				if (CheckBuildHouseMode(tile + TileDiffXY(-1, 0), slope, 1)) {
-					tile += TileDiffXY(-1, 0);
-					break;
-				}
-			} else if (_housetype_extra_flags[house] & 8) {
-				if (CheckBuildHouseMode(tile + TileDiffXY(0, 1), slope, 2)) break;
-
-				if (CheckBuildHouseMode(tile + TileDiffXY(0, -1), slope, 3)) {
-					tile += TileDiffXY(0, -1);
-					break;
-				}
-			} else {
-				break;
-			}
-		}
-	}
-
-	t->num_houses++;
-
-	// Special houses that there can be only one of.
-	t->flags12 |= oneof;
-
-	{
-		byte construction_counter = 0, construction_stage = 0, size_flags;
-
-		if (_generating_world) {
-			uint32 r = Random();
-
-			construction_stage = TOWN_HOUSE_COMPLETED;
-			if (CHANCE16(1, 7)) construction_stage = GB(r, 0, 2);
-
-			if (construction_stage == TOWN_HOUSE_COMPLETED) {
-				ChangePopulation(t, _housetype_population[house]);
-			} else {
-				construction_counter = GB(r, 2, 2);
-			}
-		}
-		size_flags = GB(_housetype_extra_flags[house], 2, 3);
-		MakeTownHouse(tile, t->index, construction_counter, construction_stage, size_flags, house);
-	}
-}
-
-static bool BuildTownHouse(Town *t, TileIndex tile)
-{
-	int32 r;
-
-	// make sure it's possible
-	if (!EnsureNoVehicle(tile)) return false;
-	if (IsSteepSlope(GetTileSlope(tile, NULL))) return false;
-	if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) return false;
-
-	r = DoCommand(tile, 0, 0, DC_EXEC | DC_AUTO | DC_NO_WATER, CMD_LANDSCAPE_CLEAR);
-	if (CmdFailed(r)) return false;
-
-	DoBuildTownHouse(t, tile);
-	return true;
-}
-
-
-static void DoClearTownHouseHelper(TileIndex tile)
-{
-	assert(IsTileType(tile, MP_HOUSE));
-	DoClearSquare(tile);
-	DeleteAnimatedTile(tile);
-}
-
-static void ClearTownHouse(Town *t, TileIndex tile)
-{
-	uint house = GetHouseType(tile);
-	uint eflags;
-
-	assert(IsTileType(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 += TileDiffXY(-1, 0);
-		} else if (_housetype_extra_flags[house-1] & 0x18) {
-			house--;
-			tile += TileDiffXY(0, -1);
-		} else if (_housetype_extra_flags[house-2] & 0x10) {
-			house-=2;
-			tile += TileDiffXY(-1, 0);
-		} else if (_housetype_extra_flags[house-3] & 0x10) {
-			house-=3;
-			tile += TileDiffXY(-1, -1);
-		}
-	}
-
-	// Remove population from the town if the house is finished.
-	if (GetHouseBuildingStage(tile) == TOWN_HOUSE_COMPLETED) {
-		ChangePopulation(t, -_housetype_population[house]);
-	}
-
-	t->num_houses--;
-
-	// Clear flags for houses that only may exist once/town.
-	switch (house) {
-		case HOUSE_TEMP_CHURCH:
-		case HOUSE_ARCT_CHURCH:
-		case HOUSE_SNOW_CHURCH:
-		case HOUSE_TROP_CHURCH:
-		case HOUSE_TOY_CHURCH:
-			CLRBIT(t->flags12, TOWN_HAS_CHURCH);
-			break;
-		case HOUSE_STADIUM:
-		case HOUSE_MODERN_STADIUM:
-			CLRBIT(t->flags12, TOWN_HAS_STADIUM);
-			break;
-		default:
-			break;
-	}
-
-	// Do the actual clearing of tiles
-	eflags = _housetype_extra_flags[house];
-	DoClearTownHouseHelper(tile);
-	if (eflags & 0x14) DoClearTownHouseHelper(tile + TileDiffXY(1, 0));
-	if (eflags & 0x18) DoClearTownHouseHelper(tile + TileDiffXY(0, 1));
-	if (eflags & 0x10) DoClearTownHouseHelper(tile + TileDiffXY(1, 1));
-}
-
-/** Rename a town (server-only).
- * @param tile unused
- * @param p1 town ID to rename
- * @param p2 unused
- */
-int32 CmdRenameTown(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
-{
-	StringID str;
-	Town *t;
-
-	if (!IsValidTownID(p1) || _cmd_text[0] == '\0') return CMD_ERROR;
-
-	t = GetTown(p1);
-
-	str = AllocateNameUnique(_cmd_text, 4);
-	if (str == 0) return CMD_ERROR;
-
-	if (flags & DC_EXEC) {
-		DeleteName(t->townnametype);
-		t->townnametype = str;
-
-		UpdateTownVirtCoord(t);
-		_town_sort_dirty = true;
-		UpdateAllStationVirtCoord();
-		MarkWholeScreenDirty();
-	} else {
-		DeleteName(str);
-	}
-	return 0;
-}
-
-// Called from GUI
-void ExpandTown(Town *t)
-{
-	int amount, n;
-
-	_generating_world = true;
-
-	/* The more houses, the faster we grow */
-	amount = RandomRange(t->num_houses / 10) + 3;
-	t->num_houses += amount;
-	UpdateTownRadius(t);
-
-	n = amount * 10;
-	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
-};
-
-static void TownActionAdvertiseSmall(Town* t)
-{
-	ModifyStationRatingAround(t->xy, _current_player, 0x40, 10);
-}
-
-static void TownActionAdvertiseMedium(Town* t)
-{
-	ModifyStationRatingAround(t->xy, _current_player, 0x70, 15);
-}
-
-static void TownActionAdvertiseLarge(Town* t)
-{
-	ModifyStationRatingAround(t->xy, _current_player, 0xA0, 20);
-}
-
-static void TownActionRoadRebuild(Town* t)
-{
-	const Player* p;
-
-	t->road_build_months = 6;
-
-	SetDParam(0, t->index);
-
-	p = GetPlayer(_current_player);
-	SetDParam(1, p->name_1);
-	SetDParam(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(TileIndex tile)
-{
-	PlayerID old;
-	int32 r;
-
-	if (GetTileSlope(tile, NULL) != SLOPE_FLAT) return false;
-
-	if (!IsTileType(tile, MP_HOUSE) &&
-			!IsTileType(tile, MP_CLEAR) &&
-			!IsTileType(tile, MP_TREES)) {
-		return false;
-	}
-
-	old = _current_player;
-	_current_player = OWNER_NONE;
-	r = DoCommand(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
-	_current_player = old;
-
-	if (CmdFailed(r)) return false;
-
-	MakeStatue(tile, _current_player);
-	MarkTileDirtyByTile(tile);
-
-	return true;
-}
-
-/**
- * Search callback function for TownActionBuildStatue
- * @param data that is passed by the caller.  In this case, nothing
- * @result of the test
- */
-static bool SearchTileForStatue(TileIndex tile, uint32 data)
-{
-	return DoBuildStatueOfCompany(tile);
-}
-
-/**
- * Perform a 9x9 tiles circular search from the center of the town
- * in order to find a free tile to place a statue
- * @param t town to search in
- */
-static void TownActionBuildStatue(Town* t)
-{
-	TileIndex tile = t->xy;
-
-	if (CircularTileSearch(tile, 9, SearchTileForStatue, 0))
-		SETBIT(t->statues, _current_player); ///< Once found and built, "inform" the Town
-}
-
-static void TownActionFundBuildings(Town* t)
-{
-	// Build next tick
-	t->grow_counter = 1;
-	// If we were not already growing
-	SETBIT(t->flags12, TOWN_IS_FUNDED);
-	// And grow for 3 months
-	t->fund_buildings_months = 3;
-}
-
-static void TownActionBuyRights(Town* t)
-{
-	t->exclusive_counter = 12;
-	t->exclusivity = _current_player;
-
-	ModifyStationRatingAround(t->xy, _current_player, 130, 17);
-}
-
-static void TownActionBribe(Town* t)
-{
-	if (!RandomRange(15)) {
-		Station *st;
-
-		// 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) {
-				uint i;
-
-				for (i = 0; i != NUM_CARGO; i++) st->goods[i].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 (IsLocalPlayer()) 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
-		 */
-		if (t->ratings[_current_player] > RATING_BRIBE_DOWN_TO) {
-			t->ratings[_current_player] = RATING_BRIBE_DOWN_TO;
-		}
-	} else {
-		ChangeTownRating(t, RATING_BRIBE_UP_STEP, RATING_BRIBE_MAXIMUM);
-	}
-}
-
-typedef void TownActionProc(Town* t);
-static TownActionProc * const _town_action_proc[] = {
-	TownActionAdvertiseSmall,
-	TownActionAdvertiseMedium,
-	TownActionAdvertiseLarge,
-	TownActionRoadRebuild,
-	TownActionBuildStatue,
-	TownActionFundBuildings,
-	TownActionBuyRights,
-	TownActionBribe
-};
-
-extern uint GetMaskOfTownActions(int *nump, PlayerID pid, const Town *t);
-
-/** Do a town action.
- * This performs an action such as advertising, building a statue, funding buildings,
- * but also bribing the town-council
- * @param tile unused
- * @param p1 town to do the action at
- * @param p2 action to perform, @see _town_action_proc for the list of available actions
- */
-int32 CmdDoTownAction(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
-{
-	int32 cost;
-	Town *t;
-
-	if (!IsValidTownID(p1) || p2 > lengthof(_town_action_proc)) return CMD_ERROR;
-
-	t = GetTown(p1);
-
-	if (!HASBIT(GetMaskOfTownActions(NULL, _current_player, t), p2)) return CMD_ERROR;
-
-	SET_EXPENSES_TYPE(EXPENSES_OTHER);
-
-	cost = (_price.build_industry >> 8) * _town_action_costs[p2];
-
-	if (flags & DC_EXEC) {
-		_town_action_proc[p2](t);
-		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 (DistanceSquare(st->xy, t->xy) <= t->radius[0]) {
-			if (st->time_since_load <= 20 || st->time_since_unload <= 20) {
-				n++;
-				if (IsValidPlayer(st->owner) && t->ratings[st->owner] <= 1000-12)
-					t->ratings[st->owner] += 12;
-			} else {
-				if (IsValidPlayer(st->owner) && t->ratings[st->owner] >= -1000+15)
-					t->ratings[st->owner] -= 15;
-			}
-		}
-	}
-
-	CLRBIT(t->flags12, TOWN_IS_FUNDED);
-
-	if (t->fund_buildings_months != 0) {
-		static const byte _grow_count_values[6] = {
-			60, 60, 60, 50, 40, 30
-		};
-		m = _grow_count_values[min(n, 5)];
-		t->fund_buildings_months--;
-	} 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 (TilePixelHeight(t->xy) >= _opt.snow_line && t->act_food == 0 && t->population > 90)
-			return;
-	} else if (_opt.landscape == LT_DESERT) {
-		if (GetTropicZone(t->xy) == TROPICZONE_DESERT && (t->act_food==0 || t->act_water==0) && t->population > 60)
-			return;
-	}
-
-	t->growth_rate = m / (t->num_houses / 50 + 1);
-	if (m <= t->grow_counter)
-		t->grow_counter = m;
-
-	SETBIT(t->flags12, TOWN_IS_FUNDED);
-}
-
-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_water = t->new_act_water; t->new_act_water = 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)
-{
-	const Player* p;
-
-	FOR_ALL_PLAYERS(p) {
-		if (t->unwanted[p->index] > 0) t->unwanted[p->index]--;
-	}
-}
-
-bool CheckIfAuthorityAllows(TileIndex tile)
-{
-	Town *t;
-
-	if (!IsValidPlayer(_current_player)) 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;
-	SetDParam(0, t->index);
-
-	return false;
-}
-
-
-Town* CalcClosestTownFromTile(TileIndex tile, uint threshold)
-{
-	Town *t;
-	uint dist, best = threshold;
-	Town *best_town = NULL;
-
-	FOR_ALL_TOWNS(t) {
-		dist = DistanceManhattan(tile, t->xy);
-		if (dist < best) {
-			best = dist;
-			best_town = t;
-		}
-	}
-
-	return best_town;
-}
-
-
-Town *ClosestTownFromTile(TileIndex tile, uint threshold)
-{
-	if (IsTileType(tile, MP_HOUSE) || (
-				IsTileType(tile, MP_STREET) &&
-				(IsLevelCrossing(tile) ? GetCrossingRoadOwner(tile) : GetTileOwner(tile)) == OWNER_TOWN
-			)) {
-		return GetTownByTile(tile);
-	} else {
-		return CalcClosestTownFromTile(tile, threshold);
-	}
-}
-
-
-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 ||
-			!IsValidPlayer(_current_player) ||
-			(_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(uint32 flags, Town *t, byte type)
-{
-	int modemod;
-
-	// if magic_bulldozer cheat is active, town doesn't restrict your destructive actions
-	if (t == NULL || !IsValidPlayer(_current_player) || _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.diff.town_council_tolerance][type];
-
-	if (t->ratings[_current_player] < 16 + modemod && !(flags & DC_NO_TOWN_RATING)) {
-		SetDParam(0, t->index);
-		_error_message = STR_2009_LOCAL_AUTHORITY_REFUSES;
-		return false;
-	}
-
-	return true;
-}
-
-void TownsMonthlyLoop(void)
-{
-	Town *t;
-
-	FOR_ALL_TOWNS(t) {
-		if (t->road_build_months != 0) t->road_build_months--;
-
-		if (t->exclusive_counter != 0)
-			if (--t->exclusive_counter == 0) t->exclusivity = (byte)-1;
-
-		UpdateTownGrowRate(t);
-		UpdateTownAmounts(t);
-		UpdateTownUnwanted(t);
-	}
-}
-
-void InitializeTowns(void)
-{
-	Subsidy *s;
-
-	/* Clean the town pool and create 1 block in it */
-	CleanPool(&_Town_pool);
-	AddBlockToPool(&_Town_pool);
-
-	memset(_subsidies, 0, sizeof(_subsidies));
-	for (s=_subsidies; s != endof(_subsidies); s++)
-		s->cargo_type = CT_INVALID;
-
-	_cur_town_ctr = 0;
-	_cur_town_iter = 0;
-	_total_towns = 0;
-	_town_sort_dirty = true;
-}
-
-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 */
-	GetSlopeTileh_Town,      /* get_slope_tileh_proc */
-};
-
-
-// Save and load of towns.
-static const SaveLoad _town_desc[] = {
-	SLE_CONDVAR(Town, xy,                    SLE_FILE_U16 | SLE_VAR_U32, 0, 5),
-	SLE_CONDVAR(Town, xy,                    SLE_UINT32,                 6, SL_MAX_VERSION),
-
-	SLE_CONDVAR(Town, population,            SLE_FILE_U16 | SLE_VAR_U32, 0, 2),
-	SLE_CONDVAR(Town, population,            SLE_UINT32,                 3, SL_MAX_VERSION),
-
-
-	    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_CONDNULL(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,SL_MAX_VERSION),
-
-	SLE_CONDVAR(Town, max_pass,              SLE_FILE_U16 | SLE_VAR_U32, 0, 8),
-	SLE_CONDVAR(Town, max_mail,              SLE_FILE_U16 | SLE_VAR_U32, 0, 8),
-	SLE_CONDVAR(Town, new_max_pass,          SLE_FILE_U16 | SLE_VAR_U32, 0, 8),
-	SLE_CONDVAR(Town, new_max_mail,          SLE_FILE_U16 | SLE_VAR_U32, 0, 8),
-	SLE_CONDVAR(Town, act_pass,              SLE_FILE_U16 | SLE_VAR_U32, 0, 8),
-	SLE_CONDVAR(Town, act_mail,              SLE_FILE_U16 | SLE_VAR_U32, 0, 8),
-	SLE_CONDVAR(Town, new_act_pass,          SLE_FILE_U16 | SLE_VAR_U32, 0, 8),
-	SLE_CONDVAR(Town, new_act_mail,          SLE_FILE_U16 | SLE_VAR_U32, 0, 8),
-
-	SLE_CONDVAR(Town, max_pass,              SLE_UINT32,                 9, SL_MAX_VERSION),
-	SLE_CONDVAR(Town, max_mail,              SLE_UINT32,                 9, SL_MAX_VERSION),
-	SLE_CONDVAR(Town, new_max_pass,          SLE_UINT32,                 9, SL_MAX_VERSION),
-	SLE_CONDVAR(Town, new_max_mail,          SLE_UINT32,                 9, SL_MAX_VERSION),
-	SLE_CONDVAR(Town, act_pass,              SLE_UINT32,                 9, SL_MAX_VERSION),
-	SLE_CONDVAR(Town, act_mail,              SLE_UINT32,                 9, SL_MAX_VERSION),
-	SLE_CONDVAR(Town, new_act_pass,          SLE_UINT32,                 9, SL_MAX_VERSION),
-	SLE_CONDVAR(Town, new_act_mail,          SLE_UINT32,                 9, SL_MAX_VERSION),
-
-	    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_water,             SLE_UINT16),
-	    SLE_VAR(Town, new_act_food,          SLE_UINT16),
-	    SLE_VAR(Town, new_act_water,         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),
-
-	    SLE_VAR(Town, exclusivity,           SLE_UINT8),
-	    SLE_VAR(Town, exclusive_counter,     SLE_UINT8),
-	// reserve extra space in savegame here. (currently 30 bytes)
-	SLE_CONDNULL(30, 2, SL_MAX_VERSION),
-
-	SLE_END()
-};
-
-static void Save_TOWN(void)
-{
-	Town *t;
-
-	FOR_ALL_TOWNS(t) {
-		SlSetArrayIndex(t->index);
-		SlObject(t, _town_desc);
-	}
-}
-
-static void Load_TOWN(void)
-{
-	int index;
-
-	_total_towns = 0;
-
-	while ((index = SlIterateArray()) != -1) {
-		Town *t;
-
-		if (!AddBlockIfNeeded(&_Town_pool, index))
-			error("Towns: failed loading savegame: too many towns");
-
-		t = GetTown(index);
-		SlObject(t, _town_desc);
-
-		_total_towns++;
-	}
-
-	/* This is to ensure all pointers are within the limits of
-	 *  the size of the TownPool */
-	if (_cur_town_ctr > GetMaxTownIndex())
-		_cur_town_ctr = 0;
-}
-
-void AfterLoadTown(void)
-{
-	Town *t;
-	FOR_ALL_TOWNS(t) {
-		UpdateTownRadius(t);
-		UpdateTownVirtCoord(t);
-	}
-	_town_sort_dirty = true;
-}
-
-
-const ChunkHandler _town_chunk_handlers[] = {
-	{ 'CITY', Save_TOWN, Load_TOWN, CH_ARRAY | CH_LAST},
-};