truelight@0: #include "stdafx.h"
truelight@0: #include "ttd.h"
tron@507: #include "table/strings.h"
tron@679: #include "map.h"
truelight@0: #include "viewport.h"
truelight@0: #include "town.h"
truelight@0: #include "command.h"
truelight@0: #include "pathfind.h"
truelight@0: #include "gfx.h"
truelight@0: #include "industry.h"
truelight@0: #include "station.h"
truelight@0: #include "player.h"
truelight@0: #include "news.h"
truelight@0: #include "saveload.h"
truelight@0: #include "economy.h"
truelight@0: #include "gui.h"
truelight@543: #include "network.h"
truelight@0: 
tron@483: enum {
tron@483: 	TOWN_HAS_CHURCH     = 0x02,
tron@483: 	TOWN_HAS_STADIUM    = 0x04
tron@483: };
tron@483: 
truelight@0: // Local
truelight@0: static int _grow_town_result;
truelight@0: 
truelight@0: static bool BuildTownHouse(Town *t, uint tile);
truelight@0: static void ClearTownHouse(Town *t, uint tile);
truelight@0: static void DoBuildTownHouse(Town *t, uint tile);
truelight@0: 
truelight@0: typedef struct DrawTownTileStruct {
truelight@0: 	uint32 sprite_1;
truelight@0: 	uint32 sprite_2;
truelight@0: 
tron@482: 	byte subtile_x:4;
tron@482: 	byte subtile_y:4;
tron@482: 	byte width:4;
tron@482: 	byte height:4;
truelight@0: 	byte dz;
truelight@0: 	byte proc;
truelight@0: } DrawTownTileStruct;
truelight@0: 
truelight@0: #include "table/town_land.h"
truelight@0: 
truelight@0: 
truelight@0: static void TownDrawTileProc1(TileInfo *ti)
truelight@0: {
truelight@0: 	AddChildSpriteScreen(0x5A3, 0xE, 0x3C - (_map_owner[ti->tile]&0x7F));
truelight@0: }
truelight@0: 
truelight@0: typedef void TownDrawTileProc(TileInfo *ti);
truelight@0: static TownDrawTileProc * const _town_draw_tile_procs[1] = {
truelight@0: 	TownDrawTileProc1
truelight@0: };
truelight@0: 
truelight@0: 
truelight@0: static void DrawTile_Town(TileInfo *ti)
truelight@0: {
truelight@0: 	const DrawTownTileStruct *dcts;
truelight@0: 	byte z;
truelight@0: 	uint32 image;
truelight@0: 
truelight@0: 	/* Retrieve pointer to the draw town tile struct */
truelight@0: 	{
tron@480: 		/* this "randomizes" on the (up to) 4 variants of a building */
truelight@817: 		byte gfx   = (byte)_map2[ti->tile];
tron@480: 		byte stage = _map3_lo[ti->tile] >> 6;
tron@480: 		uint variant;
tron@480: 		variant  = ti->x >> 4;
tron@480: 		variant ^= ti->x >> 6;
tron@480: 		variant ^= ti->y >> 4;
tron@480: 		variant -= ti->y >> 6;
tron@480: 		variant &= 3;
tron@480: 		dcts = &_town_draw_tile_data[gfx << 4 | variant << 2 | stage];
truelight@0: 	}
truelight@0: 
truelight@0: 	z = ti->z;
truelight@0: 
truelight@0: 	/* Add bricks below the house? */
truelight@0: 	if (ti->tileh) {
truelight@0: 		AddSortableSpriteToDraw(0x3DD + ti->tileh, ti->x, ti->y, 16, 16, 7, z);
truelight@0: 		AddChildSpriteScreen(dcts->sprite_1, 0x1F, 1);
truelight@0: 		z += 8;
truelight@0: 	} else {
truelight@0: 		/* Else draw regular ground */
truelight@0: 		DrawGroundSprite(dcts->sprite_1);
truelight@0: 	}
truelight@0: 
truelight@0: 	/* Add a house on top of the ground? */
truelight@0: 	if ((image = dcts->sprite_2) != 0) {
tron@497: 		if (_display_opt & DO_TRANS_BUILDINGS)
truelight@0: 			image = (image & 0x3FFF) | 0x3224000;
truelight@193: 
truelight@193: 		AddSortableSpriteToDraw(image,
tron@482: 			ti->x + dcts->subtile_x,
tron@482: 			ti->y + dcts->subtile_y,
tron@482: 			dcts->width + 1,
tron@482: 			dcts->height + 1,
truelight@0: 			dcts->dz,
truelight@0: 			z);
truelight@0: 
tron@497: 		if (_display_opt & DO_TRANS_BUILDINGS)
truelight@0: 			return;
truelight@0: 	}
truelight@0: 
truelight@0: 	{
truelight@0: 		int proc;
truelight@0: 		if ((proc=dcts->proc-1) >= 0 )
truelight@0: 			_town_draw_tile_procs[proc](ti);
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: static uint GetSlopeZ_Town(TileInfo *ti)
truelight@0: {
truelight@0: 	uint z = GetPartialZ(ti->x&0xF, ti->y&0xF, ti->tileh) + ti->z;
truelight@0: 	if (ti->tileh != 0) z = (z & ~7) + 4;
truelight@193: 	return (uint16) z;
truelight@0: }
truelight@0: 
dominik@39: static uint GetSlopeTileh_Town(TileInfo *ti)
dominik@39: {
dominik@39: 	return ti->tileh;
dominik@39: }
dominik@39: 
truelight@0: static void AnimateTile_Town(uint tile)
truelight@0: {
truelight@0: 	int old;
truelight@0: 	int i;
truelight@0: 	int a,b;
truelight@0: 
truelight@0: 	if (_tick_counter & 3)
truelight@0: 		return;
truelight@0: 
truelight@0: 	if (_map2[tile] != 4 && _map2[tile] != 5)
truelight@0: 		return;
truelight@0: 
truelight@0: 	if (!((old=_map_owner[tile])&0x80)) {
truelight@0: 		_map_owner[tile] |= 0x80;
truelight@0: 
truelight@0: 		do {
truelight@0: 			i = (Random()&7) - 1;
truelight@0: 		} while (i < 0 || i == 1 || i*6==old);
truelight@0: 
truelight@0: 		_map5[tile] = (_map5[tile] & ~0x3F) | i;
truelight@0: 	}
truelight@0: 
truelight@0: 	a = _map_owner[tile]&0x7F;
truelight@0: 	b = (_map5[tile]&0x3F) * 6;
truelight@0: 	a += (a < b) ? 1 : -1;
truelight@0: 	_map_owner[tile] = (_map_owner[tile]&0x80)|a;
truelight@0: 
truelight@0: 	if (a == b) {
truelight@0: 		_map5[tile] &= 0x40;
truelight@0: 		_map_owner[tile] &= 0x7F;
truelight@0: 		DeleteAnimatedTile(tile);
truelight@0: 	}
truelight@193: 
truelight@0: 	MarkTileDirtyByTile(tile);
truelight@0: }
truelight@0: 
truelight@0: static void UpdateTownRadius(Town *t);
truelight@0: 
truelight@0: static bool IsCloseToTown(uint tile, uint dist)
truelight@0: {
truelight@0: 	Town *t;
truelight@0: 
truelight@0: 	FOR_ALL_TOWNS(t) {
truelight@0: 		if (t->xy != 0 && GetTileDist(tile, t->xy) < dist)
truelight@0: 			return true;
truelight@0: 	}
truelight@0: 	return false;
truelight@0: }
truelight@0: 
truelight@835: static void MarkTownSignDirty(Town *t)
truelight@835: {
truelight@835: 	MarkAllViewportsDirty(
truelight@835: 		t->sign.left-6,
truelight@835: 		t->sign.top-3,
truelight@835: 		t->sign.left+t->sign.width_1*4+12,
truelight@835: 		t->sign.top + 45
truelight@835: 	);
truelight@835: }
truelight@835: 
truelight@835: void UpdateTownVirtCoord(Town *t)
truelight@835: {
truelight@836: 	Point pt;
truelight@836: 
truelight@835: 	MarkTownSignDirty(t);
tron@926: 	pt = RemapCoords2(TileX(t->xy) * 16, TileY(t->xy) * 16);
truelight@835: 	SetDParam(0, t->townnametype);
truelight@835: 	SetDParam(1, t->townnameparts);
truelight@835: 	SetDParam(2, t->population);
truelight@835: 	UpdateViewportSignPos(&t->sign, pt.x, pt.y - 24, _patches.population_in_label ? STR_TOWN_LABEL_POP : STR_2001);
truelight@835: 	MarkTownSignDirty(t);
truelight@835: }
truelight@0: 
truelight@0: static void ChangePopulation(Town *t, int mod)
truelight@0: {
truelight@0: 	t->population += mod;
truelight@0: 	InvalidateWindow(WC_TOWN_VIEW, t->index);
truelight@835: 	UpdateTownVirtCoord(t);
truelight@0: 
truelight@0: 	if (_town_sort_order & 2) _town_sort_dirty = true;
truelight@0: }
truelight@0: 
tron@1093: uint32 GetWorldPopulation(void)
celestar@1080: {
celestar@1080: 	uint32 pop;
celestar@1080: 	Town *t;
celestar@1080: 	pop = 0;
celestar@1080: 	FOR_ALL_TOWNS(t) {
celestar@1080: 			pop += t->population;
celestar@1080: 	}
celestar@1080: 	return pop;
celestar@1080: }
celestar@1080: 
truelight@0: static void MakeSingleHouseBigger(uint tile)
truelight@0: {
truelight@0: 	byte b;
truelight@193: 
tron@1035: 	assert(IsTileType(tile, MP_HOUSE));
truelight@193: 
truelight@0: 	b = _map5[tile];
truelight@0: 	if (b & 0x80)
truelight@0: 		return;
truelight@0: 
truelight@0: 	_map5[tile] = (b & 0xC0) | ((b+1)&7);
truelight@0: 
truelight@0: 	if ((_map5[tile]&7) != 0)
truelight@0: 		return;
truelight@0: 
truelight@0: 	_map3_lo[tile] = _map3_lo[tile] + 0x40;
truelight@0: 
truelight@0: 	if ( (_map3_lo[tile] & 0xC0) == 0xC0) {
truelight@0: 		Town *t = ClosestTownFromTile(tile, (uint)-1);
truelight@193: 		ChangePopulation(t, _housetype_population[_map2[tile]]);
truelight@0: 	}
truelight@0: 	MarkTileDirtyByTile(tile);
truelight@0: }
truelight@0: 
truelight@0: static void MakeTownHouseBigger(uint tile)
truelight@0: {
truelight@193: 	uint flags = _house_more_flags[_map2[tile]];
truelight@0: 	if (flags & 8) MakeSingleHouseBigger(TILE_ADDXY(tile, 0, 0));
truelight@0: 	if (flags & 4) MakeSingleHouseBigger(TILE_ADDXY(tile, 0, 1));
truelight@0: 	if (flags & 2) MakeSingleHouseBigger(TILE_ADDXY(tile, 1, 0));
truelight@0: 	if (flags & 1) MakeSingleHouseBigger(TILE_ADDXY(tile, 1, 1));
truelight@0: }
truelight@0: 
truelight@0: static void TileLoop_Town(uint tile)
truelight@0: {
truelight@0: 	int house;
truelight@0: 	Town *t;
truelight@0: 	uint32 r;
truelight@0: 
truelight@0: 	if ((_map3_lo[tile] & 0xC0) != 0xC0) {
truelight@0: 		MakeTownHouseBigger(tile);
truelight@0: 		return;
truelight@0: 	}
truelight@0: 
truelight@0: 	house = _map2[tile];
truelight@0: 	if (_housetype_extra_flags[house] & 0x20 &&
truelight@0: 			!(_map5[tile] & 0x80) &&
truelight@0: 			CHANCE16(1,2) &&
truelight@0: 			AddAnimatedTile(tile)) {
truelight@0: 		_map5[tile] = (_map5[tile] & 0x40)|0x80;
truelight@0: 	}
truelight@0: 
truelight@0: 	t = ClosestTownFromTile(tile, (uint)-1);
truelight@0: 
truelight@0: 	r = Random();
truelight@0: 
truelight@0: 	if ( (byte)r < _housetype_population[house] ) {
truelight@0: 		uint amt = ((byte)r >> 3) + 1, moved;
truelight@0: 		if (_economy.fluct <= 0) amt = (amt + 1) >> 1;
truelight@0: 		t->new_max_pass += amt;
truelight@0: 		moved = MoveGoodsToStation(tile, 1, 1, CT_PASSENGERS, amt);
truelight@0: 		t->new_act_pass += moved;
truelight@0: 	}
truelight@0: 
truelight@0: 	if ( (byte)(r>>8) < _housetype_mailamount[house] ) {
truelight@0: 		uint amt = ((byte)(r>>8) >> 3) + 1, moved;
truelight@0: 		if (_economy.fluct <= 0) amt = (amt + 1) >> 1;
truelight@0: 		t->new_max_mail += amt;
truelight@0: 		moved = MoveGoodsToStation(tile, 1, 1, CT_MAIL, amt);
truelight@0: 		t->new_act_mail += moved;
truelight@0: 	}
truelight@0: 
truelight@0: 	if (_house_more_flags[house]&8 && (t->flags12&1) && --t->time_until_rebuild == 0) {
truelight@0: 		r>>=16;
truelight@0: 		t->time_until_rebuild = (r & 63) + 130;
truelight@0: 
truelight@0: 		_current_player = OWNER_TOWN;
truelight@0: 
truelight@0: 		ClearTownHouse(t, tile);
truelight@193: 
truelight@0: 		// rebuild with another house?
truelight@0: 		if ( (byte) (r >> 8) >= 12) {
truelight@0: 			DoBuildTownHouse(t, tile);
truelight@0: 		}
truelight@314: 
truelight@314: 		_current_player = OWNER_NONE;
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: static void ClickTile_Town(uint tile)
truelight@0: {
truelight@0: 	/* not used */
truelight@0: }
truelight@0: 
truelight@0: static int32 ClearTile_Town(uint tile, byte flags)
truelight@0: {
truelight@0: 	int house, rating;
truelight@0: 	int32 cost;
truelight@0: 	Town *t;
truelight@0: 
truelight@0: 	// safety checks
truelight@0: 	if (!EnsureNoVehicle(tile)) return CMD_ERROR;
truelight@0: 	if (flags&DC_AUTO && !(flags&DC_AI_BUILDING)) return_cmd_error(STR_2004_BUILDING_MUST_BE_DEMOLISHED);
truelight@0: 
truelight@0: 	house = _map2[tile];
truelight@0: 	cost = _price.remove_house * _housetype_remove_cost[house] >> 8;
truelight@0: 
truelight@0: 	rating = _housetype_remove_ratingmod[house];
truelight@0: 	_cleared_town_rating += rating;
truelight@0: 	_cleared_town = t = ClosestTownFromTile(tile, (uint)-1);
truelight@193: 
truelight@0: 	if (_current_player < MAX_PLAYERS) {
truelight@0: 		if (rating > t->ratings[_current_player] && !(flags & DC_NO_TOWN_RATING) && !_cheats.magic_bulldozer.value) {
tron@534: 			SetDParam(0, t->index);
truelight@0: 			return_cmd_error(STR_2009_LOCAL_AUTHORITY_REFUSES);
truelight@193: 		}
truelight@0: 	}
truelight@0: 
truelight@0: 	if (flags & DC_EXEC) {
celestar@1005: 		ChangeTownRating(t, -rating, RATING_HOUSE_MINIMUM);
truelight@0: 		ClearTownHouse(t, tile);
truelight@0: 	}
truelight@0: 
truelight@0: 	return cost;
truelight@0: }
truelight@0: 
tron@473: static void GetAcceptedCargo_Town(uint tile, AcceptedCargo ac)
truelight@0: {
truelight@0: 	int type = _map2[tile];
truelight@193: 
tron@473: 	ac[CT_PASSENGERS] = _housetype_cargo_passengers[type];
tron@473: 	ac[CT_MAIL] = _housetype_cargo_mail[type];
tron@473: 	ac[CT_GOODS] = _housetype_cargo_goods[type];
tron@473: 	ac[CT_FOOD] = _housetype_cargo_food[type];
truelight@0: }
truelight@0: 
truelight@0: static void GetTileDesc_Town(uint tile, TileDesc *td)
truelight@0: {
truelight@0: 	td->str = _town_tile_names[_map2[tile]];
truelight@0: 	if ((_map3_lo[tile] & 0xC0) != 0xC0) {
tron@534: 		SetDParamX(td->dparam, 0, td->str);
truelight@0: 		td->str = STR_2058_UNDER_CONSTRUCTION;
truelight@0: 	}
truelight@0: 
truelight@0: 	td->owner = OWNER_TOWN;
truelight@0: }
truelight@0: 
truelight@159: static uint32 GetTileTrackStatus_Town(uint tile, TransportType mode)
truelight@0: {
truelight@0: 	/* not used */
truelight@0: 	return 0;
truelight@0: }
truelight@0: 
truelight@0: static void ChangeTileOwner_Town(uint tile, byte old_player, byte new_player)
truelight@0: {
truelight@0: 	/* not used */
truelight@0: }
truelight@0: 
truelight@0: 
tron@909: static const TileIndexDiffC _roadblock_tileadd[] = {
tron@909: 	{ 0, -1},
tron@909: 	{ 1,  0},
tron@909: 	{ 0,  1},
tron@909: 	{-1,  0},
truelight@193: 
truelight@0: 	// Store the first 3 elements again.
truelight@0: 	// Lets us rotate without using &3.
tron@909: 	{ 0, -1},
tron@909: 	{ 1,  0},
tron@909: 	{ 0,  1}
truelight@0: };
truelight@0: 
truelight@0: static void TownTickHandler(Town *t)
truelight@0: {
truelight@0: 	if (t->flags12&1) {
truelight@0: 		int i = t->grow_counter - 1;
truelight@0: 		if (i < 0) {
truelight@0: 			if (GrowTown(t)) {
truelight@0: 				i = t->growth_rate;
truelight@0: 			} else {
truelight@193: 				i = 0;
truelight@0: 			}
truelight@0: 		}
truelight@0: 		t->grow_counter = i;
truelight@0: 	}
truelight@0: 
truelight@0: 	UpdateTownRadius(t);
truelight@0: }
truelight@0: 
tron@1093: void OnTick_Town(void)
truelight@0: {
truelight@0: 	uint i;
truelight@0: 	Town *t;
truelight@0: 
truelight@0: 	if (_game_mode == GM_EDITOR)
truelight@0: 		return;
truelight@0: 
truelight@0: 	i = _cur_town_ctr;
truelight@919: 	t = GetTown(i);
truelight@919: 	if (++i == _towns_size) i = 0;
truelight@0: 	_cur_town_ctr = i;
truelight@0: 
truelight@0: 	if (t->xy != 0)
truelight@0: 		TownTickHandler(t);
truelight@0: 
truelight@0: }
truelight@0: 
truelight@0: static byte GetTownRoadMask(TileIndex tile)
truelight@0: {
pasky@516: 	byte b = GetRoadBitsByTile(tile);
truelight@0: 	byte r=0;
truelight@0: 	if (b&1) r|=10;
truelight@0: 	if (b&2) r|=5;
truelight@0: 	if (b&4) r|=9;
truelight@0: 	if (b&8) r|=6;
truelight@0: 	if (b&16) r|=3;
truelight@0: 	if (b&32) r|=12;
truelight@0: 	return r;
truelight@0: }
truelight@0: 
truelight@0: static bool IsRoadAllowedHere(uint tile, int dir)
truelight@0: {
truelight@0: 	uint k;
truelight@0: 	uint slope;
truelight@0: 
truelight@0: 	// If this assertion fails, it might be because the world contains
truelight@0: 	//  land at the edges. This is not ok.
truelight@0: 	TILE_ASSERT(tile);
truelight@193: 
truelight@0: 	for(;;) {
truelight@0: 		// Check if there already is a road at this point?
pasky@516: 		if (GetRoadBitsByTile(tile) == 0) {
truelight@0: 			// No, try to build one in the direction.
truelight@0: 			// if that fails clear the land, and if that fails exit.
truelight@0: 			// This is to make sure that we can build a road here later.
truelight@0: 			if (DoCommandByTile(tile, (dir&1)?0xA:0x5, 0, DC_AUTO, CMD_BUILD_ROAD) == CMD_ERROR &&
truelight@0: 					DoCommandByTile(tile, 0, 0, DC_AUTO, CMD_LANDSCAPE_CLEAR) == CMD_ERROR)
truelight@0: 				return false;
truelight@0: 		}
truelight@0: 
truelight@0: 		slope = GetTileSlope(tile, NULL);
truelight@0: 		if (slope == 0) {
pasky@465: no_slope:
truelight@0: 			// Tile has no slope
truelight@0: 			// Disallow the road if any neighboring tile has a road.
tron@909: 			if (HASBIT(GetTownRoadMask(TILE_ADD(tile, ToTileIndexDiff(_roadblock_tileadd[dir+1]))), dir^2) ||
tron@909: 					HASBIT(GetTownRoadMask(TILE_ADD(tile, ToTileIndexDiff(_roadblock_tileadd[dir+3]))), dir^2) ||
tron@909: 					HASBIT(GetTownRoadMask(TILE_ADD(tile, ToTileIndexDiff(_roadblock_tileadd[dir+1]) + ToTileIndexDiff(_roadblock_tileadd[dir+2]))), dir) ||
tron@909: 					HASBIT(GetTownRoadMask(TILE_ADD(tile, ToTileIndexDiff(_roadblock_tileadd[dir+3]) + ToTileIndexDiff(_roadblock_tileadd[dir+2]))), dir))
truelight@0: 				return false;
truelight@193: 
truelight@0: 			// Otherwise allow
truelight@0: 			return true;
truelight@0: 		}
truelight@193: 
truelight@0: 		// If the tile is not a slope in the right direction, then
truelight@0: 		// maybe terraform some.
truelight@0: 		if ((k = (dir&1)?0xC:0x9) != slope && (k^0xF) != slope) {
truelight@0: 			uint32 r = Random();
truelight@0: 
truelight@0: 			if (CHANCE16I(1,8, r) && !_generating_world) {
pasky@465: 				int32 res;
pasky@465: 
truelight@0: 				if (CHANCE16I(1,16,r))
pasky@465: 					res = DoCommandByTile(tile, slope, 0, DC_EXEC | DC_AUTO | DC_NO_WATER,
pasky@465: 					                      CMD_TERRAFORM_LAND);
truelight@0: 				else
pasky@465: 					res = DoCommandByTile(tile, slope^0xF, 1, DC_EXEC | DC_AUTO | DC_NO_WATER,
pasky@465: 					                      CMD_TERRAFORM_LAND);
pasky@465: 				if (res == CMD_ERROR && CHANCE16I(1,3,r))
pasky@465: 					// We can consider building on the slope, though.
pasky@465: 					goto no_slope;
truelight@0: 			}
truelight@0: 			return false;
truelight@0: 		}
truelight@0: 
truelight@835: 		/* Can somebody explain for what this is needed? :s */
truelight@835: 		// tile = TILE_ADD(tile, _roadblock_tileadd[dir]);
truelight@835: 		return true;
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: static bool TerraformTownTile(uint tile, int edges, int dir)
truelight@0: {
truelight@0: 	int32 r;
truelight@193: 
truelight@0: 	TILE_ASSERT(tile);
truelight@0: 
truelight@0: 	r = DoCommandByTile(tile, edges, dir, DC_AUTO | DC_NO_WATER, CMD_TERRAFORM_LAND);
truelight@0: 	if (r == CMD_ERROR || r >= 126*16)
truelight@0: 		return false;
truelight@0: 	DoCommandByTile(tile, edges, dir, DC_AUTO | DC_NO_WATER | DC_EXEC, CMD_TERRAFORM_LAND);
truelight@0: 	return true;
truelight@0: }
truelight@0: 
truelight@0: static void LevelTownLand(uint tile)
truelight@0: {
truelight@0: 	TileInfo ti;
truelight@0: 
truelight@0: 	TILE_ASSERT(tile);
truelight@0: 
truelight@0: 	// Don't terraform if land is plain or if there's a house there.
truelight@0: 	FindLandscapeHeightByTile(&ti, tile);
truelight@0: 	if (ti.tileh == 0 || ti.type == MP_HOUSE)
truelight@0: 		return;
truelight@0: 
truelight@0: 	// First try up, then down
truelight@0: 	if (!TerraformTownTile(tile, ~ti.tileh & 0xF, 1)) {
truelight@0: 		TerraformTownTile(tile, ti.tileh & 0xF, 0);
truelight@0: 	}
truelight@0: }
truelight@0: 
tron@1035: #define IS_WATER_TILE(t) (IsTileType((t), MP_WATER) && _map5[(t)] == 0)
truelight@0: 
truelight@0: static void GrowTownInTile(uint *tile_ptr, uint mask, int block, Town *t1)
truelight@0: {
truelight@0: 	Town *t2;
truelight@0: 	uint16 r;
truelight@0: 	int a,b,rcmd;
truelight@0: 	uint tmptile;
truelight@0: 	TileInfo ti;
truelight@0: 	int i;
truelight@0: 	int j;
truelight@0: 	uint tile = *tile_ptr;
truelight@0: 
truelight@0: 	TILE_ASSERT(tile);
truelight@0: 
truelight@0: 	if (mask == 0) {
truelight@0: 		// Tile has no road. First reset the status counter
truelight@193: 		// to say that this is the last iteration.
truelight@0: 		_grow_town_result = 0;
truelight@0: 
truelight@0: 		// Then check if the tile we are at belongs to the town,
truelight@0: 		// if not, bail out.
truelight@0: 		t2 = ClosestTownFromTile(tile, (uint)-1);
truelight@0: 		if (t2 != t1)
truelight@0: 			return;
truelight@0: 
truelight@0: 		// Remove hills etc
truelight@0: 		LevelTownLand(tile);
truelight@0: 
truelight@0: 		// Is a road allowed here?
truelight@0: 		if (!IsRoadAllowedHere(tile, block))
truelight@0: 			return;
truelight@0: 
truelight@0: 		// Randomize new road block numbers
truelight@0: 		a = block;
truelight@0: 		b = block ^ 2;
truelight@0: 		r = (uint16)Random();
truelight@0: 		if (r <= 0x4000) do {
truelight@0: 			a = (int)Random() & 3;
truelight@0: 		} while(a == b);
truelight@0: 
tron@909: 		if (!IsRoadAllowedHere(TILE_ADD(tile, ToTileIndexDiff(_roadblock_tileadd[a])), a)) {
truelight@0: 			// A road is not allowed to continue the randomized road,
truelight@0: 			//   return if the road we're trying to build is curved.
truelight@0: 			if ( a != (b^2))
truelight@0: 				return;
truelight@193: 
truelight@0: 			// Return if neither side of the new road is a house
tron@1035: 			if (!IsTileType(TILE_ADD(tile, ToTileIndexDiff(_roadblock_tileadd[a + 1])), MP_HOUSE) &&
tron@1035: 					!IsTileType(TILE_ADD(tile, ToTileIndexDiff(_roadblock_tileadd[a + 3])), MP_HOUSE))
truelight@0: 				return;
truelight@0: 
truelight@0: 			// That means that the road is only allowed if there is a house
truelight@0: 			//  at any side of the new road.
truelight@0: 		}
truelight@0: 		rcmd = (1 << a) + (1 << b);
truelight@0: 
truelight@0: 	} else if (block < 5 && !HASBIT(mask,block^2)) {
truelight@0: 		// Continue building on a partial road.
truelight@0: 		// Always OK.
truelight@0: 		_grow_town_result = 0;
truelight@0: 		rcmd = 1 << (block^2);
truelight@0: 	} else {
truelight@0: 
truelight@0: 		// Reached a tunnel? Then continue at the other side of it.
tron@1035: 		if (IsTileType(tile, MP_TUNNELBRIDGE) && (_map5[tile]& ~3) == 4) {
truelight@159: 			FindLengthOfTunnelResult flotr = FindLengthOfTunnel(tile, _map5[tile]&3);
truelight@0: 			*tile_ptr = flotr.tile;
truelight@0: 			return;
truelight@0: 		}
truelight@193: 
truelight@0: 		// For any other kind of tunnel/bridge, bail out.
tron@1035: 		if (IsTileType(tile, MP_TUNNELBRIDGE))
truelight@0: 			return;
truelight@0: 
truelight@0: 		// Possibly extend the road in a direction.
truelight@0: 		// Randomize a direction and if it has a road, bail out.
truelight@0: 		i = (int)Random() & 3;
truelight@0: 		if (HASBIT(mask, i))
truelight@0: 			return;
truelight@0: 
truelight@0: 		// This is the tile we will reach if we extend to this direction.
tron@909: 		tmptile = TILE_ADD(tile, ToTileIndexDiff(_roadblock_tileadd[i]));
truelight@193: 
truelight@0: 		// Don't do it if it reaches to water.
truelight@0: 		if (IS_WATER_TILE(tmptile))
truelight@0: 			return;
truelight@0: 
truelight@0: 		// If the new tile belongs to another town,
truelight@0: 		//  then stop the search altogether.
truelight@0: 		if (ClosestTownFromTile(tmptile, (uint)-1) != t1) {
truelight@0: 			_grow_town_result = 0;
truelight@0: 			return;
truelight@0: 		}
truelight@0: 
truelight@193: 		// Build a house at the edge. 60% chance or
truelight@0: 		//  always ok if no road allowed.
truelight@0: 		if (!IsRoadAllowedHere(tmptile, i) || CHANCE16(6,10)) {
truelight@0: 			// But not if there already is a house there.
tron@1035: 			if (!IsTileType(tmptile, MP_HOUSE)) {
truelight@0: 				// Level the land if possible
truelight@0: 				LevelTownLand(tmptile);
truelight@0: 
truelight@0: 				// And build a house.
truelight@0: 				// Set result to -1 if we managed to build it.
truelight@0: 				if (BuildTownHouse(t1, tmptile))
truelight@0: 					_grow_town_result = -1;
truelight@0: 			}
truelight@0: 			return;
truelight@0: 		}
truelight@0: 
truelight@0: 		_grow_town_result = 0;
truelight@0: 		rcmd = 1 << i;
truelight@0: 	}
truelight@0: 
truelight@0: 	FindLandscapeHeightByTile(&ti, tile);
truelight@0: 
truelight@0: 	// Return if a water tile
truelight@0: 	if (ti.type == MP_WATER && ti.map5==0)
truelight@0: 		return;
truelight@0: 
truelight@0: 	// Determine direction of slope,
truelight@0: 	//  and build a road if not a special slope.
truelight@0: 	if ((i=0,ti.tileh != 3) &&
truelight@0: 			(i++,ti.tileh != 9) &&
truelight@0: 			(i++,ti.tileh != 12) &&
truelight@0: 			(i++,ti.tileh != 6)) {
truelight@0: build_road_and_exit:
truelight@0: 		if (DoCommandByTile(tile, rcmd, 0, DC_EXEC | DC_AUTO | DC_NO_WATER, CMD_BUILD_ROAD) != CMD_ERROR)
truelight@0: 			_grow_town_result = -1;
truelight@0: 		return;
truelight@0: 	}
truelight@0: 
truelight@0: 	tmptile = tile;
truelight@0: 
truelight@0: 	// Now it contains the direction of the slope
truelight@0: 	j = -11;	// max 11 tile long bridges
truelight@0: 	do {
truelight@0: 		if (++j == 0)
truelight@0: 			goto build_road_and_exit;
tron@900: 		tmptile = TILE_MASK(tmptile + TileOffsByDir(i));
truelight@0: 	} while (IS_WATER_TILE(tmptile));
truelight@0: 
truelight@0: 	// no water tiles in between?
truelight@0: 	if (j == -10)
truelight@0: 		goto build_road_and_exit;
truelight@0: 
truelight@0: 	// Quit if it selecting an appropiate bridge type fails a large number of times.
truelight@0: 	j = 22;
truelight@0: 	{
truelight@0: 		int32 bridge_len = GetBridgeLength(tile, tmptile);
truelight@0: 		do {
truelight@0: 			byte bridge_type = RandomRange(MAX_BRIDGES - 1);
truelight@0: 			if (CheckBridge_Stuff(bridge_type, bridge_len)) {
truelight@0: 				if (DoCommandByTile(tile, tmptile, 0x8000 + bridge_type, DC_EXEC | DC_AUTO, CMD_BUILD_BRIDGE) != CMD_ERROR)
truelight@0: 					_grow_town_result = -1;
truelight@0: 
truelight@0: 				// obviously, if building any bridge would fail, there is no need to try other bridge-types
truelight@0: 				return;
truelight@0: 			}
truelight@0: 		} while(--j != 0);
truelight@0: 	}
truelight@0: }
truelight@0: #undef IS_WATER_TILE
truelight@0: 
truelight@0: 
truelight@0: // Returns true if a house was built, or no if the build failed.
truelight@0: static int GrowTownAtRoad(Town *t, uint tile)
truelight@0: {
truelight@0: 	uint mask;
truelight@0: 	int block = 5; // special case
truelight@0: 
truelight@0: 	TILE_ASSERT(tile);
truelight@0: 
truelight@0: 	// Number of times to search.
pasky@470: 	_grow_town_result = 10 + t->num_houses * 4 / 9;
truelight@0: 
truelight@0: 	do {
truelight@0: 		// Get a bitmask of the road blocks on a tile
truelight@0: 		mask = GetTownRoadMask(tile);
truelight@0: 
truelight@0: 		// Try to grow the town from this point
truelight@0: 		GrowTownInTile(&tile,mask,block,t);
truelight@0: 
truelight@0: 		// Exclude the source position from the bitmask
truelight@0: 		// and return if no more road blocks available
truelight@0: 		CLRBIT(mask, (block ^ 2));
truelight@0: 		if (mask == 0)
truelight@0: 			return _grow_town_result;
truelight@0: 
truelight@0: 		// Select a random bit from the blockmask, walk a step
truelight@0: 		// and continue the search from there.
truelight@0: 		do block = Random() & 3; while (!HASBIT(mask,block));
tron@909: 		tile += ToTileIndexDiff(_roadblock_tileadd[block]);
truelight@0: 
truelight@0: 		// Max number of times is checked.
truelight@0: 	} while (--_grow_town_result >= 0);
truelight@0: 
truelight@0: 	return (_grow_town_result == -2);
truelight@0: }
truelight@0: 
truelight@0: // Generate a random road block
truelight@0: // The probability of a straight road
truelight@0: // is somewhat higher than a curved.
tron@1093: static int GenRandomRoadBits(void)
truelight@0: {
truelight@0: 	uint32 r = Random();
truelight@0: 	int a = r&3, b = (r >> 8) & 3;
truelight@0: 	if (a == b) b ^= 2;
truelight@0: 	return (1<<a)+(1<<b);
truelight@0: }
truelight@0: 
truelight@0: // Grow the town
truelight@0: // Returns true if a house was built, or no if the build failed.
truelight@0: bool GrowTown(Town *t)
truelight@0: {
truelight@0: 	uint tile;
tron@909: 	const TileIndexDiffC *ptr;
truelight@0: 	TileInfo ti;
truelight@260: 	byte old_player;
truelight@0: 
tron@909: 	static const TileIndexDiffC _town_coord_mod[] = {
tron@909: 		{-1,  0},
tron@909: 		{ 1,  1},
tron@909: 		{ 1, -1},
tron@909: 		{-1, -1},
tron@909: 		{-1,  0},
tron@909: 		{ 0,  2},
tron@909: 		{ 2,  0},
tron@909: 		{ 0, -2},
tron@909: 		{-1, -1},
tron@909: 		{-2,  2},
tron@909: 		{ 2,  2},
tron@909: 		{ 2, -2},
tron@909: 		{ 0,  0}
truelight@0: 	};
truelight@0: 
truelight@0: 	// Current player is a town
truelight@260: 	old_player = _current_player;
truelight@0: 	_current_player = OWNER_TOWN;
truelight@0: 
truelight@0: 	// Find a road that we can base the construction on.
truelight@0: 	tile = t->xy;
tron@909: 	for (ptr = _town_coord_mod; ptr != endof(_town_coord_mod); ++ptr) {
pasky@516: 		if (GetRoadBitsByTile(tile) != 0) {
truelight@260: 			int r = GrowTownAtRoad(t, tile);
truelight@260: 			_current_player = old_player;
truelight@260: 			return r;
truelight@0: 		}
tron@909: 		tile = TILE_ADD(tile, ToTileIndexDiff(*ptr));
tron@909: 	}
truelight@0: 
truelight@0: 	// No road available, try to build a random road block by
truelight@0: 	// clearing some land and then building a road there.
truelight@0: 	tile = t->xy;
tron@909: 	for (ptr = _town_coord_mod; ptr != endof(_town_coord_mod); ++ptr) {
truelight@0: 		FindLandscapeHeightByTile(&ti, tile);
truelight@193: 
truelight@0: 		// Only work with plain land that not already has a house with map5=0
truelight@0: 		if (ti.tileh == 0 && !(ti.type==MP_HOUSE && ti.map5==0)) {
truelight@0: 			if (DoCommandByTile(tile, 0, 0, DC_AUTO, CMD_LANDSCAPE_CLEAR) != CMD_ERROR) {
truelight@0: 				DoCommandByTile(tile, GenRandomRoadBits(), 0, DC_EXEC | DC_AUTO, CMD_BUILD_ROAD);
truelight@260: 				_current_player = old_player;
truelight@0: 				return true;
truelight@0: 			}
truelight@0: 		}
tron@909: 		tile = TILE_ADD(tile, ToTileIndexDiff(*ptr));
tron@909: 	}
truelight@0: 
truelight@260: 	_current_player = old_player;
truelight@0: 	return false;
truelight@0: }
truelight@0: 
truelight@0: static void UpdateTownRadius(Town *t)
truelight@0: {
truelight@0: 	static const uint16 _town_radius_data[23][5] = {
pasky@470: 		{ 4,  0,  0,  0,  0}, // 0
truelight@0: 		{16,  0,  0,  0,  0},
truelight@0: 		{25,  0,  0,  0,  0},
truelight@0: 		{36,  0,  0,  0,  0},
truelight@0: 		{49,  0,  4,  0,  0},
pasky@470: 		{64,  0,  4,  0,  0}, // 20
truelight@0: 		{64,  0,  9,  0,  1},
truelight@0: 		{64,  0,  9,  0,  4},
truelight@0: 		{64,  0, 16,  0,  4},
truelight@0: 		{81,  0, 16,  0,  4},
pasky@470: 		{81,  0, 16,  0,  4}, // 40
truelight@0: 		{81,  0, 25,  0,  9},
truelight@0: 		{81, 36, 25,  0,  9},
truelight@0: 		{81, 36, 25, 16,  9},
truelight@0: 		{81, 49,  0, 25,  9},
pasky@470: 		{81, 64,  0, 25,  9}, // 60
truelight@0: 		{81, 64,  0, 36,  9},
truelight@0: 		{81, 64,  0, 36, 16},
pasky@470: 		{100, 81,  0, 49, 16},
pasky@470: 		{100, 81,  0, 49, 25},
pasky@470: 		{121, 81,  0, 49, 25}, // 80
pasky@470: 		{121, 81,  0, 49, 25},
pasky@470: 		{121, 81,  0, 49, 36}, // 88
truelight@0: 	};
pasky@470: 
pasky@470: 	if (t->num_houses < 92) {
pasky@470: 		memcpy(t->radius, _town_radius_data[t->num_houses / 4], sizeof(t->radius));
pasky@470: 	} else {
pasky@470: 		int mass = t->num_houses / 8;
pasky@470: 		// At least very roughly extrapolate. Empirical numbers dancing between
pasky@470: 		// overwhelming by cottages and skyscrapers outskirts.
pasky@470: 		t->radius[0] = mass * mass;
pasky@470: 		// Actually we are proportional to sqrt() but that's right because
pasky@470: 		// we are covering an area.
pasky@470: 		t->radius[1] = mass * 7;
pasky@470: 		t->radius[2] = 0;
pasky@470: 		t->radius[3] = mass * 4;
pasky@470: 		t->radius[4] = mass * 3;
pasky@470: 		//debug("%d (->%d): %d %d %d %d\n", t->num_houses, mass, t->radius[0], t->radius[1], t->radius[3], t->radius[4]);
pasky@470: 	}
truelight@0: }
truelight@0: 
truelight@0: static void CreateTownName(Town *t1)
truelight@0: {
truelight@0: 	Town *t2;
truelight@0: 	char buf1[64];
truelight@0: 	char buf2[64];
truelight@0: 	uint32 r;
truelight@0: 
truelight@0: 	t1->townnametype = SPECSTR_TOWNNAME_START + _opt.town_name;
truelight@0: 
truelight@0: 	for(;;) {
truelight@0: restart:
truelight@0: 		r = Random();
truelight@0: 
tron@534: 		SetDParam(0, r);
truelight@0: 		GetString(buf1, t1->townnametype);
truelight@193: 
truelight@0: 		// Check size and width
truelight@0: 		if (strlen(buf1) >= 31 || GetStringWidth(buf1) > 130)
truelight@0: 			continue;
truelight@0: 
truelight@0: 		FOR_ALL_TOWNS(t2) {
truelight@0: 			if (t2->xy != 0) {
tron@534: 				SetDParam(0, t2->townnameparts);
truelight@0: 				GetString(buf2, t2->townnametype);
truelight@0: 				if (str_eq(buf1, buf2))
truelight@0: 					goto restart;
truelight@0: 			}
truelight@0: 		}
truelight@0: 		t1->townnameparts = r;
truelight@193: 
truelight@0: 		return;
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: static void UpdateTownMaxPass(Town *t)
truelight@0: {
truelight@0: 	t->max_pass = t->population >> 3;
truelight@0: 	t->max_mail = t->population >> 4;
truelight@0: }
truelight@0: 
truelight@0: static void DoCreateTown(Town *t, TileIndex tile)
truelight@0: {
truelight@0: 	int x, i;
truelight@0: 
truelight@0: 	// clear the town struct
truelight@0: 	i = t->index;
truelight@0: 	memset(t, 0, sizeof(Town));
truelight@0: 	t->index = i;
truelight@0: 
truelight@0: 	t->xy = tile;
truelight@0: 	t->num_houses = 0;
truelight@0: 	t->time_until_rebuild = 10;
truelight@0: 	UpdateTownRadius(t);
truelight@0: 	t->flags12 = 0;
truelight@0: 	t->population = 0;
truelight@0: 	t->grow_counter = 0;
truelight@0: 	t->growth_rate = 250;
truelight@0: 	t->new_max_pass = 0;
truelight@0: 	t->new_max_mail = 0;
truelight@0: 	t->new_act_pass = 0;
truelight@0: 	t->new_act_mail = 0;
truelight@0: 	t->max_pass = 0;
truelight@0: 	t->max_mail = 0;
truelight@0: 	t->act_pass = 0;
truelight@0: 	t->act_mail = 0;
truelight@0: 
truelight@0: 	t->pct_pass_transported = 0;
truelight@0: 	t->pct_mail_transported = 0;
truelight@0: 	t->fund_buildings_months = 0;
truelight@0: 	t->new_act_food = 0;
darkvater@4: 	t->new_act_water = 0;
truelight@0: 	t->act_food = 0;
darkvater@4: 	t->act_water = 0;
truelight@0: 
truelight@0: 	for(i = 0; i != MAX_PLAYERS; i++)
truelight@0: 		t->ratings[i] = 500;
truelight@0: 
truelight@0: 	t->have_ratings = 0;
dominik@121: 	t->exclusivity = (byte)-1;
dominik@121: 	t->exclusive_counter = 0;
truelight@0: 	t->statues = 0;
truelight@0: 
truelight@0: 	CreateTownName(t);
truelight@193: 
truelight@0: 	UpdateTownVirtCoord(t);
truelight@0: 	_town_sort_dirty = true;
truelight@0: 
truelight@0: 	x = (Random() & 0xF) + 8;
truelight@0: 	if (_game_mode == GM_EDITOR)
truelight@0: 		x = _new_town_size * 16 + 3;
truelight@0: 
truelight@0: 	t->num_houses += x;
truelight@0: 	UpdateTownRadius(t);
truelight@0: 
truelight@0: 	i = x * 4;
truelight@0: 	do {
truelight@0: 		GrowTown(t);
truelight@0: 	} while (--i);
truelight@0: 
truelight@0: 	t->num_houses -= x;
truelight@0: 	UpdateTownRadius(t);
truelight@0: 	UpdateTownMaxPass(t);
truelight@0: }
truelight@0: 
tron@1093: static Town *AllocateTown(void)
truelight@0: {
truelight@0: 	Town *t;
truelight@0: 	FOR_ALL_TOWNS(t) {
truelight@0: 		if (t->xy == 0) {
truelight@543: 			if (t->index > _total_towns) _total_towns = t->index;
truelight@0: 			return t;
truelight@0: 		}
truelight@0: 	}
truelight@0: 	return NULL;
truelight@0: }
truelight@0: 
truelight@0: int32 CmdBuildTown(int x, int y, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
truelight@0: 	uint tile = TILE_FROM_XY(x,y);
truelight@0: 	TileInfo ti;
truelight@0: 	Town *t;
truelight@193: 
truelight@0: 	SET_EXPENSES_TYPE(EXPENSES_OTHER);
truelight@0: 
truelight@0: 	// Check if too close to the edge of map
truelight@0: 	if (!CheckDistanceFromEdge(tile, 12))
truelight@0: 		return_cmd_error(STR_0237_TOO_CLOSE_TO_EDGE_OF_MAP);
truelight@0: 
truelight@0: 	// Can only build on clear flat areas.
truelight@0: 	FindLandscapeHeightByTile(&ti, tile);
truelight@0: 	if (ti.type != MP_CLEAR || ti.tileh != 0)
truelight@0: 		return_cmd_error(STR_0239_SITE_UNSUITABLE);
truelight@0: 
truelight@0: 	// Check distance to all other towns.
truelight@0: 	if (IsCloseToTown(tile, 20))
truelight@0: 		return_cmd_error(STR_0238_TOO_CLOSE_TO_ANOTHER_TOWN);
truelight@0: 
truelight@0: 	// Allocate town struct
truelight@0: 	t = AllocateTown();
truelight@0: 	if (t == NULL)
truelight@193: 		return_cmd_error(STR_023A_TOO_MANY_TOWNS);
truelight@0: 
truelight@0: 	// Create the town
truelight@0: 	if (flags & DC_EXEC) {
truelight@0: 		_generating_world = true;
truelight@0: 		DoCreateTown(t, tile);
truelight@0: 		_generating_world = false;
truelight@0: 	}
truelight@0: 	return 0;
truelight@0: }
truelight@0: 
tron@1093: Town *CreateRandomTown(void)
truelight@0: {
truelight@0: 	uint tile;
truelight@0: 	TileInfo ti;
truelight@0: 	Town *t;
truelight@0: 	int n;
truelight@0: 
truelight@0: 	// Try 20 times.
truelight@0: 	n = 20;
truelight@0: 	do {
truelight@0: 		// Generate a tile index not too close from the edge
truelight@0: 		tile = TILE_MASK(Random());
truelight@0: 		if (!CheckDistanceFromEdge(tile, 20))
truelight@0: 			continue;
truelight@0: 
truelight@0: 		// Make sure the tile is plain
truelight@0: 		FindLandscapeHeightByTile(&ti, tile);
truelight@0: 		if (ti.type != MP_CLEAR || ti.tileh != 0)
truelight@0: 			continue;
truelight@0: 
truelight@0: 		// Check not too close to a town
truelight@0: 		if (IsCloseToTown(tile, 20))
truelight@0: 			continue;
truelight@193: 
truelight@0: 		// Allocate a town struct
truelight@0: 		t = AllocateTown();
truelight@0: 		if (t == NULL)
truelight@0: 			break;
truelight@0: 
truelight@0: 		DoCreateTown(t, tile);
truelight@0: 		return t;
truelight@0: 	} while (--n);
truelight@0: 	return NULL;
truelight@0: }
truelight@0: 
truelight@0: static const byte _num_initial_towns[3] = {
truelight@0: 	11, 23, 46
truelight@0: };
truelight@0: 
tron@1093: void GenerateTowns(void)
truelight@0: {
truelight@0: 	uint n;
truelight@0: 	n = _num_initial_towns[_opt.diff.number_towns] + (Random()&7);
truelight@0: 	do CreateRandomTown(); while (--n);
truelight@0: }
truelight@0: 
truelight@0: static bool CheckBuildHouseMode(Town *t1, uint tile, uint tileh, int mode) {
truelight@0: 	Town *t2 = ClosestTownFromTile(tile, (uint)-1);
truelight@0: 	int b;
truelight@0: 	uint slope;
truelight@0: 
truelight@0: 	static const byte _masks[8] = {
truelight@0: 		0xC,0x3,0x9,0x6,
truelight@0: 		0x3,0xC,0x6,0x9,
truelight@0: 	};
truelight@0: 
truelight@0: 	if (t2 != t1)
truelight@0: 		return false;
truelight@0: 
truelight@0: 	slope = GetTileSlope(tile, NULL);
truelight@0: 	if (slope & 0x10)
truelight@0: 		return false;
truelight@0: 
truelight@0: 	b = 0;
truelight@0: 	if ((slope & 0xF && ~slope & _masks[mode])) b = ~b;
truelight@0: 	if ((tileh & 0xF && ~tileh & _masks[mode+4])) b = ~b;
truelight@0: 	if (b)
truelight@0: 		return false;
truelight@0: 
truelight@0: 	return DoCommandByTile(tile, 0, 0, DC_EXEC | DC_AUTO | DC_NO_WATER, CMD_LANDSCAPE_CLEAR) != CMD_ERROR;
truelight@0: }
truelight@0: 
truelight@0: int GetTownRadiusGroup(Town *t, uint tile)
truelight@0: {
truelight@0: 	uint dist;
truelight@0: 	int i,smallest;
truelight@0: 
truelight@0: 	dist = GetTileDistAdv(tile, t->xy);
truelight@0: 	if (t->fund_buildings_months && dist <= 25)
truelight@0: 		return 4;
truelight@0: 
truelight@0: 	smallest = 0;
truelight@0: 	for(i=0; i!=lengthof(t->radius); i++) {
truelight@0: 		if (dist < t->radius[i])
truelight@0: 			smallest = i;
truelight@0: 	}
truelight@0: 
truelight@0: 	return smallest;
truelight@0: }
truelight@0: 
truelight@0: static bool CheckFree2x2Area(Town *t1, uint tile)
truelight@0: {
truelight@0: 	Town *t;
truelight@0: 	int i;
truelight@0: 
tron@909: 	static const TileIndexDiffC _tile_add[] = {
tron@909: 		{0    , 0    },
tron@909: 		{0 - 0, 1 - 0},
tron@909: 		{1 - 0, 0 - 1},
tron@909: 		{1 - 1, 1 - 0}
truelight@0: 	};
truelight@0: 
truelight@0: 	for(i=0; i!=4; i++) {
tron@909: 		tile += ToTileIndexDiff(_tile_add[i]);
truelight@0: 
truelight@0: 		t = ClosestTownFromTile(tile, (uint)-1);
truelight@193: 		if (t1 != t)
truelight@0: 			return false;
truelight@0: 
truelight@0: 		if (GetTileSlope(tile, NULL))
truelight@0: 			return false;
truelight@0: 
truelight@0: 		if (DoCommandByTile(tile, 0, 0, DC_EXEC | DC_AUTO | DC_NO_WATER | DC_FORCETEST, CMD_LANDSCAPE_CLEAR) == CMD_ERROR)
truelight@0: 			return false;
truelight@0: 	}
truelight@0: 
truelight@0: 	return true;
truelight@0: }
truelight@0: 
truelight@0: static void DoBuildTownHouse(Town *t, uint tile)
truelight@0: {
truelight@0: 	int i;
truelight@0: 	uint bitmask;
truelight@0: 	int house;
truelight@0: 	uint slope;
truelight@0: 	int z;
truelight@0: 	uint oneof;
truelight@193: 
truelight@0: 	// Above snow?
truelight@0: 	slope = GetTileSlope(tile, &z);
truelight@0: 
truelight@0: 	// Get the town zone type
truelight@0: 	{
truelight@0: 		uint rad = GetTownRadiusGroup(t, tile);
truelight@0: 
truelight@0: 		int land = _opt.landscape;
truelight@0: 		if (land == LT_HILLY && z >= _opt.snow_line)
truelight@0: 			land = -1;
truelight@0: 
truelight@0: 		bitmask = (1 << rad) + (1 << (land + 12));
truelight@0: 	}
truelight@0: 
truelight@0: 	// bits 0-4 are used
truelight@0: 	// bits 11-15 are used
truelight@0: 	// bits 5-10 are not used.
truelight@0: 	{
truelight@0: 		byte houses[lengthof(_housetype_flags)];
truelight@0: 		int num = 0;
truelight@0: 
truelight@0: 		// Generate a list of all possible houses that can be built.
truelight@0: 		for(i=0; i!=lengthof(_housetype_flags); i++) {
truelight@0: 			if ((~_housetype_flags[i] & bitmask) == 0)
truelight@0: 				houses[num++] = (byte)i;
truelight@0: 		}
truelight@0: 
truelight@0: 		for(;;) {
truelight@0: 			house = houses[RandomRange(num)];
truelight@0: 
truelight@0: 			if (_cur_year < _housetype_years[house].min || _cur_year > _housetype_years[house].max)
truelight@0: 				continue;
truelight@0: 
truelight@0: 			// Special houses that there can be only one of.
tron@483: 			switch (house) {
tron@483: 				case HOUSE_TEMP_CHURCH:
tron@483: 				case HOUSE_ARCT_CHURCH:
tron@483: 				case HOUSE_SNOW_CHURCH:
tron@483: 				case HOUSE_TROP_CHURCH:
tron@483: 				case HOUSE_TOY_CHURCH:
tron@483: 					oneof = TOWN_HAS_CHURCH;
tron@483: 					break;
tron@483: 				case HOUSE_STADIUM:
tron@483: 				case HOUSE_MODERN_STADIUM:
tron@483: 					oneof = TOWN_HAS_STADIUM;
tron@483: 					break;
tron@483: 				default:
tron@483: 					oneof = 0;
tron@483: 					break;
tron@483: 			}
truelight@0: 
truelight@0: 			if (t->flags12 & oneof)
truelight@0: 				continue;
truelight@0: 
truelight@0: 			// Make sure there is no slope?
truelight@0: 			if (_housetype_extra_flags[house]&0x12 && slope)
truelight@0: 				continue;
truelight@193: 
truelight@0: 			if (_housetype_extra_flags[house]&0x10) {
truelight@0: 				if (CheckFree2x2Area(t,tile) ||
truelight@0: 						CheckFree2x2Area(t,(tile+=TILE_XY(-1,0))) ||
truelight@0: 						CheckFree2x2Area(t,(tile+=TILE_XY(0,-1))) ||
truelight@0: 						CheckFree2x2Area(t,(tile+=TILE_XY(1,0))))
truelight@0: 							break;
truelight@0: 				tile += TILE_XY(0,1);
truelight@0: 			} else if (_housetype_extra_flags[house]&4) {
truelight@0: 				if (CheckBuildHouseMode(t, tile+TILE_XY(1,0), slope, 0))
truelight@0: 					break;
truelight@193: 
truelight@0: 				if (CheckBuildHouseMode(t, tile+TILE_XY(-1,0), slope, 1)) {
truelight@0: 					tile += TILE_XY(-1,0);
truelight@0: 					break;
truelight@0: 				}
truelight@0: 			} else if (_housetype_extra_flags[house]&8) {
truelight@0: 				if (CheckBuildHouseMode(t, tile+TILE_XY(0,1), slope, 2))
truelight@0: 					break;
truelight@0: 
truelight@0: 				if (CheckBuildHouseMode(t, tile+TILE_XY(0,-1), slope, 3)) {
truelight@0: 					tile += TILE_XY(0,-1);
truelight@0: 					break;
truelight@0: 				}
truelight@0: 			} else
truelight@0: 				break;
truelight@0: 		}
truelight@0: 	}
truelight@0: 
truelight@0: 	t->num_houses++;
truelight@0: 
truelight@0: 	// Special houses that there can be only one of.
truelight@0: 	t->flags12 |= oneof;
truelight@193: 
truelight@0: 	{
truelight@0: 		int m3lo,m5,eflags;
truelight@0: 
truelight@0: 		// ENDING_2
truelight@0: 		m3lo = 0;
truelight@0: 		m5 = 0;
truelight@0: 		if (_generating_world) {
truelight@0: 			uint32 r = Random();
truelight@193: 
truelight@0: 			// Value for map3lo
truelight@0: 			m3lo = 0xC0;
truelight@0: 			if ((byte)r >= 220) m3lo &= (r>>8);
truelight@0: 
truelight@0: 			if (m3lo == 0xC0)
truelight@0: 				ChangePopulation(t, _housetype_population[house]);
truelight@193: 
truelight@0: 			// Initial value for map5.
truelight@0: 			m5 = (r >> 16) & 0x3F;
truelight@0: 		}
truelight@193: 
tron@1035: 		assert(IsTileType(tile, MP_CLEAR));
truelight@0: 
truelight@193: 		ModifyTile(tile,
truelight@0: 			MP_SETTYPE(MP_HOUSE) | MP_MAP2 | MP_MAP3LO | MP_MAP3HI_CLEAR | MP_MAP5 | MP_MAPOWNER,
truelight@0: 			house, /* map2 */
truelight@0: 			m3lo,  /* map3_lo */
truelight@0: 			0,     /* map_owner */
truelight@0: 			m5		 /* map5 */
truelight@0: 		);
truelight@0: 
truelight@0: 		eflags = _housetype_extra_flags[house];
truelight@0: 
truelight@0: 		if (eflags&0x18) {
tron@1035: 			assert(IsTileType(tile + TILE_XY(0,1), MP_CLEAR));
truelight@0: 			ModifyTile(tile + TILE_XY(0,1),
truelight@0: 				MP_SETTYPE(MP_HOUSE) | MP_MAP2 | MP_MAP3LO | MP_MAP3HI_CLEAR | MP_MAP5 | MP_MAPOWNER,
truelight@0: 				++house,	/* map2 */
truelight@0: 				m3lo,			/* map3_lo */
truelight@0: 				0,				/* map_owner */
truelight@0: 				m5				/* map5 */
truelight@0: 			);
truelight@0: 		}
truelight@0: 
truelight@0: 		if (eflags&0x14) {
tron@1035: 			assert(IsTileType(tile + TILE_XY(1,0), MP_CLEAR));
truelight@0: 			ModifyTile(tile + TILE_XY(1,0),
truelight@0: 				MP_SETTYPE(MP_HOUSE) | MP_MAP2 | MP_MAP3LO | MP_MAP3HI_CLEAR | MP_MAP5 | MP_MAPOWNER,
truelight@0: 				++house,	/* map2 */
truelight@0: 				m3lo,			/* map3_lo */
truelight@0: 				0,				/* map_owner */
truelight@0: 				m5				/* map5 */
truelight@0: 			);
truelight@0: 		}
truelight@0: 
truelight@0: 		if (eflags&0x10) {
tron@1035: 			assert(IsTileType(tile + TILE_XY(1,1), MP_CLEAR));
truelight@0: 			ModifyTile(tile + TILE_XY(1,1),
truelight@0: 				MP_SETTYPE(MP_HOUSE) | MP_MAP2 | MP_MAP3LO | MP_MAP3HI_CLEAR | MP_MAP5 | MP_MAPOWNER,
truelight@0: 				++house,	/* map2 */
truelight@0: 				m3lo,			/* map3_lo */
truelight@0: 				0,				/* map_owner */
truelight@0: 				m5				/* map5 */
truelight@0: 			);
truelight@0: 		}
truelight@0: 	}
truelight@0: 
truelight@0: 	// ENDING
truelight@0: }
truelight@0: 
truelight@0: static bool BuildTownHouse(Town *t, uint tile)
truelight@0: {
truelight@0: 	int32 r;
truelight@193: 
truelight@0: 	// make sure it's possible
truelight@0: 	if (!EnsureNoVehicle(tile)) return false;
truelight@0: 	if (GetTileSlope(tile, NULL) & 0x10) return false;
truelight@0: 
truelight@0: 	r = DoCommandByTile(tile, 0, 0, DC_EXEC | DC_AUTO | DC_NO_WATER, CMD_LANDSCAPE_CLEAR);
truelight@0: 	if (r == CMD_ERROR) return false;
truelight@0: 
truelight@0: 	DoBuildTownHouse(t, tile);
truelight@0: 	return true;
truelight@0: }
truelight@0: 
truelight@0: 
truelight@0: static void DoClearTownHouseHelper(uint tile)
truelight@0: {
tron@1035: 	assert(IsTileType(tile, MP_HOUSE));
truelight@0: 	DoClearSquare(tile);
truelight@0: 	DeleteAnimatedTile(tile);
truelight@0: }
truelight@0: 
truelight@0: static void ClearTownHouse(Town *t, uint tile) {
truelight@0: 	uint house = _map2[tile];
truelight@0: 	uint eflags;
truelight@0: 
tron@1035: 	assert(IsTileType(tile, MP_HOUSE));
truelight@0: 
truelight@0: 	// need to align the tile to point to the upper left corner of the house
truelight@0: 	if (house >= 3) { // house id 0,1,2 MUST be single tile houses, or this code breaks.
truelight@0: 		if (_housetype_extra_flags[house-1] & 0x04) {
truelight@0: 			house--;
truelight@0: 			tile += TILE_XY(-1,0);
truelight@0: 		} else if (_housetype_extra_flags[house-1] & 0x18) {
truelight@0: 			house--;
truelight@0: 			tile += TILE_XY(0,-1);
truelight@0: 		} else if (_housetype_extra_flags[house-2] & 0x10) {
truelight@0: 			house-=2;
truelight@0: 			tile += TILE_XY(-1,0);
truelight@0: 		} else if (_housetype_extra_flags[house-3] & 0x10) {
truelight@0: 			house-=3;
truelight@0: 			tile += TILE_XY(-1,-1);
truelight@0: 		}
truelight@0: 	}
truelight@193: 
truelight@0: 	// Remove population from the town if the
truelight@0: 	// house is finished.
truelight@0: 	if ((~_map3_lo[tile] & 0xC0) == 0) {
truelight@0: 		ChangePopulation(t, -_housetype_population[house]);
truelight@0: 	}
truelight@0: 
truelight@0: 	t->num_houses--;
truelight@0: 
truelight@0: 	// Clear flags for houses that only may exist once/town.
tron@483: 	switch (house) {
tron@483: 		case HOUSE_TEMP_CHURCH:
tron@483: 		case HOUSE_ARCT_CHURCH:
tron@483: 		case HOUSE_SNOW_CHURCH:
tron@483: 		case HOUSE_TROP_CHURCH:
tron@483: 		case HOUSE_TOY_CHURCH:
tron@483: 			t->flags12 &= ~TOWN_HAS_CHURCH;
tron@483: 			break;
tron@483: 		case HOUSE_STADIUM:
tron@483: 		case HOUSE_MODERN_STADIUM:
tron@483: 			t->flags12 &= ~TOWN_HAS_STADIUM;
tron@483: 			break;
tron@483: 		default:
tron@483: 			break;
tron@483: 	}
truelight@193: 
truelight@0: 	// Do the actual clearing of tiles
truelight@0: 	eflags = _housetype_extra_flags[house];
truelight@0: 	DoClearTownHouseHelper(tile);
truelight@0: 	if (eflags & 0x14) DoClearTownHouseHelper(tile + TILE_XY(1,0));
truelight@0: 	if (eflags & 0x18) DoClearTownHouseHelper(tile + TILE_XY(0,1));
truelight@0: 	if (eflags & 0x10) DoClearTownHouseHelper(tile + TILE_XY(1,1));
truelight@0: }
truelight@0: 
truelight@0: int32 CmdRenameTown(int x, int y, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
truelight@0: 	StringID str;
truelight@919: 	Town *t = GetTown(p1);
truelight@193: 
truelight@543: 	str = AllocateNameUnique((byte*)_decode_parameters, 4);
truelight@0: 	if (str == 0)
truelight@0: 		return CMD_ERROR;
truelight@0: 
truelight@0: 	if (flags & DC_EXEC) {
truelight@0: 		StringID old_str = t->townnametype;
truelight@0: 		t->townnametype = str;
truelight@0: 		DeleteName(old_str);
truelight@0: 
truelight@0: 		UpdateTownVirtCoord(t);
truelight@0: 		_town_sort_dirty = true;
truelight@0: 		UpdateAllStationVirtCoord();
truelight@0: 		MarkWholeScreenDirty();
truelight@0: 	} else {
truelight@0: 		DeleteName(str);
truelight@0: 	}
truelight@0: 	return 0;
truelight@0: }
truelight@0: 
truelight@0: // Called from GUI
truelight@0: void DeleteTown(Town *t)
truelight@0: {
truelight@0: 	Industry *i;
truelight@0: 	uint tile;
truelight@0: 
truelight@0: 	// Delete town authority window
truelight@0: 	//  and remove from list of sorted towns
truelight@0: 	DeleteWindowById(WC_TOWN_VIEW, t->index);
truelight@0: 	_town_sort_dirty = true;
truelight@0: 
truelight@0: 	// Delete all industries belonging to the town
truelight@830: 	FOR_ALL_INDUSTRIES(i) {
truelight@0: 		if (i->xy && i->town == t)
truelight@0: 			DeleteIndustry(i);
truelight@0: 	}
truelight@0: 
truelight@0: 	// Go through all tiles and delete those belonging to the town
truelight@0: 	tile = 0;
truelight@0: 	do {
tron@1035: 		if (IsTileType(tile, MP_HOUSE)) {
truelight@0: 			if (ClosestTownFromTile(tile, (uint)-1) == t) {
truelight@0: 				DoCommandByTile(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
truelight@0: 			}
tron@1035: 		} else if (IsTileType(tile, MP_TUNNELBRIDGE) || IsTileType(tile, MP_STREET)) {
truelight@0: 			if (_map_owner[tile] == OWNER_TOWN && ClosestTownFromTile(tile, (uint)-1) == t) {
truelight@0: 				DoCommandByTile(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
truelight@0: 			}
truelight@0: 		}
tron@863: 	} while (++tile != MapSize());
truelight@0: 
truelight@0: 	t->xy = 0;
truelight@0: 	DeleteName(t->townnametype);
truelight@0: 
truelight@0: 	MarkWholeScreenDirty();
truelight@0: }
truelight@0: 
truelight@0: // Called from GUI
truelight@0: void ExpandTown(Town *t)
truelight@0: {
truelight@0: 	int amount, n;
truelight@0: 
truelight@0: 	_generating_world = true;
truelight@193: 
truelight@835: 	/* The more houses, the faster we grow */
truelight@835: 	amount = RandomRange(t->num_houses / 10) + 3;
truelight@0: 	t->num_houses += amount;
truelight@0: 	UpdateTownRadius(t);
truelight@0: 
truelight@835: 	n = amount * 10;
truelight@0: 	do GrowTown(t); while (--n);
truelight@0: 
truelight@0: 	t->num_houses -= amount;
truelight@0: 	UpdateTownRadius(t);
truelight@0: 
truelight@0: 	UpdateTownMaxPass(t);
truelight@0: 	_generating_world = false;
truelight@0: }
truelight@0: 
truelight@0: const byte _town_action_costs[8] = {
truelight@0: 	2, 4, 9, 35, 48, 53, 117, 175
truelight@0: };
truelight@0: 
truelight@0: typedef void TownActionProc(Town *t, int action);
truelight@0: 
truelight@0: static void TownActionAdvertise(Town *t, int action)
truelight@0: {
truelight@0: 	static const byte _advertising_amount[3] = {0x40, 0x70, 0xA0};
truelight@0: 	static const byte _advertising_radius[3] = {10,15,20};
truelight@193: 	ModifyStationRatingAround(t->xy, _current_player,
truelight@0: 		_advertising_amount[action],
truelight@0: 		_advertising_radius[action]);
truelight@0: }
truelight@0: 
truelight@0: static void TownActionRoadRebuild(Town *t, int action)
truelight@0: {
truelight@0: 	Player *p;
truelight@0: 
truelight@0: 	t->road_build_months = 6;
truelight@193: 
tron@534: 	SetDParam(0, t->index);
truelight@0: 
truelight@0: 	p = DEREF_PLAYER(_current_player);
tron@534: 	SetDParam(1, p->name_1);
tron@534: 	SetDParam(2, p->name_2);
truelight@0: 
truelight@193: 	AddNewsItem(STR_2055_TRAFFIC_CHAOS_IN_ROAD_REBUILDING,
truelight@0: 		NEWS_FLAGS(NM_NORMAL, NF_TILE, NT_GENERAL, 0), t->xy, 0);
truelight@0: }
truelight@0: 
truelight@0: static bool DoBuildStatueOfCompany(uint tile)
truelight@0: {
truelight@0: 	TileInfo ti;
truelight@0: 	byte old;
truelight@0: 	int32 r;
truelight@0: 
truelight@0: 	FindLandscapeHeightByTile(&ti, tile);
truelight@0: 	if (ti.tileh != 0)
truelight@0: 		return false;
truelight@0: 
truelight@0: 	if (ti.type != MP_HOUSE && ti.type != MP_CLEAR && ti.type != MP_TREES)
truelight@0: 		return false;
truelight@0: 
truelight@0: 
truelight@0: 	old = _current_player;
truelight@0: 	_current_player = OWNER_NONE;
truelight@0: 	r = DoCommandByTile(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
truelight@0: 	_current_player = old;
truelight@0: 
truelight@0: 	if (r == CMD_ERROR)
truelight@0: 		return false;
truelight@0: 
truelight@0: 	ModifyTile(tile, MP_SETTYPE(MP_UNMOVABLE) | MP_MAPOWNER_CURRENT | MP_MAP5,
truelight@0: 		2 /* map5 */
truelight@0: 	);
truelight@0: 
truelight@0: 	return true;
truelight@0: }
truelight@0: 
truelight@0: static void TownActionBuildStatue(Town *t, int action)
truelight@0: {
truelight@0: 	// Layouted as an outward spiral
tron@909: 	static const TileIndexDiffC _statue_tiles[] = {
tron@909: 		{-1, 0},
tron@909: 		{ 0, 1},
tron@909: 		{ 1, 0}, { 1, 0},
tron@909: 		{ 0,-1}, { 0,-1},
tron@909: 		{-1, 0}, {-1, 0}, {-1, 0},
tron@909: 		{ 0, 1}, { 0, 1}, { 0, 1},
tron@909: 		{ 1, 0}, { 1, 0}, { 1, 0}, { 1, 0},
tron@909: 		{ 0,-1}, { 0,-1}, { 0,-1}, { 0,-1},
tron@909: 		{-1, 0}, {-1, 0}, {-1, 0}, {-1, 0}, {-1, 0},
tron@909: 		{ 0, 1}, { 0, 1}, { 0, 1}, { 0, 1}, { 0, 1},
tron@909: 		{ 1, 0}, { 1, 0}, { 1, 0}, { 1, 0}, { 1, 0}, { 1, 0},
tron@909: 		{ 0,-1}, { 0,-1}, { 0,-1}, { 0,-1}, { 0,-1}, { 0,-1},
tron@909: 		{-1, 0}, {-1, 0}, {-1, 0}, {-1, 0}, {-1, 0}, {-1, 0}, {-1, 0},
tron@909: 		{ 0, 1}, { 0, 1}, { 0, 1}, { 0, 1}, { 0, 1}, { 0, 1}, { 0, 1},
tron@909: 		{ 1, 0}, { 1, 0}, { 1, 0}, { 1, 0}, { 1, 0}, { 1, 0}, { 1, 0}, { 1, 0},
tron@909: 		{ 0,-1}, { 0,-1}, { 0,-1}, { 0,-1}, { 0,-1}, { 0,-1}, { 0,-1}, { 0,-1},
tron@909: 		{-1, 0}, {-1, 0}, {-1, 0}, {-1, 0}, {-1, 0}, {-1, 0}, {-1, 0}, {-1, 0},
tron@909: 		{ 0, 0}
tron@909: 	};
truelight@0: 	uint tile = t->xy;
tron@909: 	const TileIndexDiffC *p;
truelight@0: 
truelight@0: 	SETBIT(t->statues, _current_player);
truelight@0: 
tron@909: 	for (p = _statue_tiles; p != endof(_statue_tiles); ++p) {
truelight@0: 		if (DoBuildStatueOfCompany(tile))
truelight@0: 			return;
tron@909: 		tile = TILE_ADD(tile, ToTileIndexDiff(*p));
tron@909: 	}
truelight@0: }
truelight@0: 
truelight@0: static void TownActionFundBuildings(Town *t, int action)
truelight@0: {
truelight@0: 	t->grow_counter = 1;
truelight@0: 	t->flags12 |= 1;
truelight@0: 	t->fund_buildings_months = 3;
truelight@0: }
truelight@0: 
truelight@0: static void TownActionBuyRights(Town *t, int action)
truelight@0: {
dominik@121: 	t->exclusive_counter = 12;
dominik@121: 	t->exclusivity = _current_player;
truelight@0: 
truelight@0: 	ModifyStationRatingAround(t->xy, _current_player, 130, 17);
truelight@0: }
truelight@0: 
truelight@0: static void TownActionBribe(Town *t, int action)
truelight@0: {
truelight@0: 	if (!RandomRange(15)) {
truelight@0: 		GoodsEntry *ge;
truelight@0: 		Station *st;
truelight@0: 		int i, rating;
truelight@0: 
truelight@0: 		// set as unwanted for 6 months
truelight@0: 		t->unwanted[_current_player] = 6;
truelight@0: 
truelight@0: 		// set all close by station ratings to 0
truelight@0: 		FOR_ALL_STATIONS(st) {
truelight@0: 			if (st->town == t && st->owner == _current_player) {
truelight@0: 				for (i=0, ge = st->goods; i != NUM_CARGO; i++, ge++)
truelight@0: 					ge->rating = 0;
truelight@0: 			}
truelight@0: 		}
truelight@0: 
truelight@0: 		// only show errormessage to the executing player. All errors are handled command.c
truelight@0: 		// but this is special, because it can only 'fail' on a DC_EXEC
truelight@0: 		if (!_networking || (_current_player == _local_player))
truelight@0: 			ShowErrorMessage(STR_BRIBE_FAILED_2, STR_BRIBE_FAILED, 0, 0);
truelight@0: 
truelight@0: 		/*	decrease by a lot!
truelight@0: 		 *	ChangeTownRating is only for stuff in demolishing. Bribe failure should
truelight@0: 		 *	be independent of any cheat settings
truelight@0: 		 */
truelight@0: 		rating = t->ratings[_current_player];
truelight@0: 		if (rating > -50)
celestar@1005: 			t->ratings[_current_player] = RATING_BRIBE_DOWN_TO;
truelight@0: 	} else {
celestar@1005: 		ChangeTownRating(t, RATING_BRIBE_UP_STEP, RATING_BRIBE_MAXIMUM);
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: static TownActionProc * const _town_action_proc[] = {
truelight@0: 	TownActionAdvertise,
truelight@0: 	TownActionAdvertise,
truelight@0: 	TownActionAdvertise,
truelight@0: 	TownActionRoadRebuild,
truelight@0: 	TownActionBuildStatue,
truelight@0: 	TownActionFundBuildings,
truelight@0: 	TownActionBuyRights,
truelight@0: 	TownActionBribe
truelight@0: };
truelight@0: 
truelight@0: // p1 = town
truelight@0: // p2 = action
truelight@0: int32 CmdDoTownAction(int x, int y, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
truelight@0: 	int32 cost;
truelight@0: 
truelight@0: 	SET_EXPENSES_TYPE(EXPENSES_OTHER);
truelight@0: 
truelight@0: 	cost = (_price.build_industry >> 8) * _town_action_costs[p2];
truelight@0: 
truelight@0: 	if (flags & DC_EXEC) {
truelight@919: 		_town_action_proc[p2](GetTown(p1), p2);
truelight@0: 		InvalidateWindow(WC_TOWN_AUTHORITY, p1);
truelight@0: 	}
truelight@0: 
truelight@0: 	return cost;
truelight@0: }
truelight@0: 
truelight@0: static void UpdateTownGrowRate(Town *t)
truelight@0: {
truelight@0: 	int n;
truelight@0: 	Station *st;
truelight@0: 	byte m;
truelight@0: 	Player *p;
truelight@0: 
truelight@0: 	// Reset player ratings if they're low
truelight@0: 	FOR_ALL_PLAYERS(p) {
truelight@0: 		if (p->is_active && t->ratings[p->index] <= 200) {
truelight@0: 			t->ratings[p->index] += 5;
truelight@0: 		}
truelight@0: 	}
truelight@0: 
truelight@0: 	n = 0;
truelight@0: 	FOR_ALL_STATIONS(st) {
truelight@0: 		if (GetTileDistAdv(st->xy, t->xy) <= t->radius[0]) {
truelight@0: 			if (st->time_since_load <= 20 || st->time_since_unload <= 20) {
truelight@0: 				n++;
truelight@0: 				if (st->owner < MAX_PLAYERS && t->ratings[st->owner] <= 1000-12)
truelight@0: 					t->ratings[st->owner] += 12;
truelight@0: 			} else {
truelight@0: 				if (st->owner < MAX_PLAYERS && t->ratings[st->owner] >= -1000+15)
truelight@0: 					t->ratings[st->owner] -= 15;
truelight@0: 			}
truelight@0: 		}
truelight@0: 	}
truelight@0: 
truelight@0: 	t->flags12 &= ~1;
truelight@0: 
truelight@0: 	if (t->fund_buildings_months != 0) {
pasky@470: 		static const byte _grow_count_values[6] = {
pasky@470: 			60, 60, 60, 50, 40, 30
pasky@470: 		};
pasky@470: 		m = _grow_count_values[min(n, 5)];
truelight@0: 		t->fund_buildings_months--;
truelight@0: 	} else if (n == 0) {
truelight@0: 		m = 160;
truelight@0: 		if (!CHANCE16(1, 12))
truelight@0: 			return;
truelight@0: 	} else {
truelight@0: 		static const byte _grow_count_values[5] = {
truelight@0: 			210, 150, 110, 80, 50
truelight@0: 		};
truelight@0: 		m = _grow_count_values[min(n, 5) - 1];
truelight@0: 	}
truelight@0: 
truelight@0: 	if (_opt.landscape == LT_HILLY) {
tron@1041:  		if (TilePixelHeight(t->xy) >= _opt.snow_line && t->act_food == 0 && t->population > 90)
truelight@0: 			return;
truelight@0: 	} else if (_opt.landscape == LT_DESERT) {
pasky@468:  		if (GetMapExtraBits(t->xy) == 1 && (t->act_food==0 || t->act_water==0) && t->population > 60)
truelight@0: 			return;
truelight@0: 	}
truelight@0: 
pasky@470:   	t->growth_rate = m / (t->num_houses / 50 + 1);
truelight@0: 	if (m <= t->grow_counter)
truelight@0: 		t->grow_counter = m;
truelight@0: 
truelight@0: 	t->flags12 |= 1;
truelight@0: }
truelight@0: 
truelight@0: static void UpdateTownAmounts(Town *t)
truelight@0: {
truelight@0: 	// Using +1 here to prevent overflow and division by zero
truelight@0: 	t->pct_pass_transported = t->new_act_pass * 256 / (t->new_max_pass + 1);
truelight@0: 
truelight@0: 	t->max_pass = t->new_max_pass; t->new_max_pass = 0;
truelight@0: 	t->act_pass = t->new_act_pass; t->new_act_pass = 0;
truelight@0: 	t->act_food = t->new_act_food; t->new_act_food = 0;
darkvater@4: 	t->act_water = t->new_act_water; t->new_act_water = 0;
truelight@0: 
truelight@0: 	// Using +1 here to prevent overflow and division by zero
truelight@0: 	t->pct_mail_transported = t->new_act_mail * 256 / (t->new_max_mail + 1);
truelight@0: 	t->max_mail = t->new_max_mail; t->new_max_mail = 0;
truelight@0: 	t->act_mail = t->new_act_mail; t->new_act_mail = 0;
truelight@0: 
truelight@0: 	InvalidateWindow(WC_TOWN_VIEW, t->index);
truelight@0: }
truelight@0: 
truelight@0: static void UpdateTownUnwanted(Town *t)
truelight@0: {
truelight@0: 	Player *p;
truelight@0: 
truelight@0: 	FOR_ALL_PLAYERS(p) {
truelight@0: 		if (t->unwanted[p->index] > 0)
truelight@0: 			t->unwanted[p->index]--;
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: bool CheckIfAuthorityAllows(uint tile)
truelight@0: {
truelight@0: 	Town *t;
truelight@0: 
truelight@0: 	if (_current_player >= MAX_PLAYERS)
truelight@0: 		return true;
truelight@0: 
truelight@0: 	t = ClosestTownFromTile(tile, _patches.dist_local_authority);
truelight@0: 	if (t == NULL)
truelight@0: 		return true;
truelight@0: 
truelight@0: 	if (t->ratings[_current_player] > -200)
truelight@0: 		return true;
truelight@0: 
truelight@0: 	_error_message = STR_2009_LOCAL_AUTHORITY_REFUSES;
tron@534: 	SetDParam(0, t->index);
truelight@0: 
truelight@0: 	return false;
truelight@0: }
truelight@0: 
truelight@0: 
truelight@0: Town *ClosestTownFromTile(uint tile, uint threshold)
truelight@0: {
truelight@0: 	Town *t;
truelight@0: 	uint dist, best = threshold;
truelight@0: 	Town *best_town = NULL;
truelight@193: 
truelight@0: 	FOR_ALL_TOWNS(t) {
truelight@0: 		if (t->xy != 0) {
truelight@0: 			dist = GetTileDist(tile, t->xy);
truelight@0: 			if (dist < best) {
truelight@0: 				best = dist;
truelight@0: 				best_town = t;
truelight@0: 			}
truelight@0: 		}
truelight@0: 	}
truelight@0: 
truelight@0: 	return best_town;
truelight@0: }
truelight@0: 
truelight@0: void ChangeTownRating(Town *t, int add, int max)
truelight@0: {
truelight@0: 	int rating;
truelight@0: 
truelight@0: 	//	if magic_bulldozer cheat is active, town doesn't penaltize for removing stuff
truelight@0: 	if (t == NULL || _current_player >= MAX_PLAYERS || (_cheats.magic_bulldozer.value && add < 0)	)
truelight@0: 		return;
truelight@0: 
truelight@0: 	SETBIT(t->have_ratings, _current_player);
truelight@193: 
truelight@0: 	rating = t->ratings[_current_player];
truelight@193: 
truelight@0: 	if (add < 0) {
truelight@0: 		if (rating > max) {
truelight@0: 			rating += add;
truelight@0: 			if (rating < max) rating = max;
truelight@0: 		}
truelight@0: 	} else {
truelight@0: 		if (rating < max) {
truelight@0: 			rating += add;
truelight@0: 			if (rating > max) rating = max;
truelight@0: 		}
truelight@0: 	}
truelight@0: 	t->ratings[_current_player] = rating;
truelight@0: }
truelight@0: 
truelight@0: /*	penalty for removing town-owned stuff */
truelight@0: static const int _default_rating_settings [3][3] = {
truelight@0: 	// ROAD_REMOVE, TUNNELBRIDGE_REMOVE, INDUSTRY_REMOVE
truelight@0: 	{  0, 128, 384},	// Permissive
truelight@0: 	{ 48, 192, 480},	// Neutral
truelight@0: 	{ 96, 384, 768},	// Hostile
truelight@0: };
truelight@0: 
truelight@0: bool CheckforTownRating(uint tile, uint32 flags, Town *t, byte type)
truelight@0: {
truelight@0: 	int modemod;
truelight@0: 
truelight@0: 	//	if magic_bulldozer cheat is active, town doesn't restrict your destructive actions
truelight@0: 	if (t == NULL || _current_player >= MAX_PLAYERS || _cheats.magic_bulldozer.value)
truelight@0: 		return true;
truelight@0: 
truelight@0: 	/*	check if you're allowed to remove the street/bridge/tunnel/industry
truelight@193: 	 *	owned by a town	no removal if rating is lower than ... depends now on
truelight@0: 	 *	difficulty setting. Minimum town rating selected by difficulty level
truelight@0: 	 */
truelight@0: 	modemod = _default_rating_settings[_opt_mod_ptr->diff.town_council_tolerance][type];
truelight@0: 
truelight@0: 	if (t->ratings[_current_player] < 16 + modemod && !(flags & DC_NO_TOWN_RATING)) {
tron@534: 		SetDParam(0, t->index);
truelight@0: 		_error_message = STR_2009_LOCAL_AUTHORITY_REFUSES;
truelight@0: 		return false;
truelight@0: 	}
truelight@0: 
truelight@0: 	return true;
truelight@0: }
truelight@0: 
tron@1093: void TownsMonthlyLoop(void)
truelight@0: {
truelight@0: 	Town *t;
truelight@0: 
truelight@0: 	FOR_ALL_TOWNS(t) if (t->xy != 0) {
truelight@0: 		if (t->road_build_months != 0)
truelight@0: 			t->road_build_months--;
truelight@0: 
dominik@121: 		if (t->exclusive_counter != 0)
dominik@121: 			if(--t->exclusive_counter==0)
dominik@121: 				t->exclusivity = (byte)-1;
dominik@121: 
truelight@0: 		UpdateTownGrowRate(t);
truelight@0: 		UpdateTownAmounts(t);
truelight@0: 		UpdateTownUnwanted(t);
truelight@0: 	}
truelight@0: }
truelight@0: 
tron@1093: void InitializeTowns(void)
truelight@0: {
truelight@0: 	Subsidy *s;
truelight@919: 	Town *t;
truelight@0: 	int i;
truelight@0: 
truelight@919: 	memset(_towns, 0, sizeof(_towns[0]) * _towns_size);
truelight@919: 
truelight@919: 	i = 0;
truelight@919: 	FOR_ALL_TOWNS(t)
truelight@919: 		t->index = i++;
truelight@0: 
truelight@0: 	memset(_subsidies, 0, sizeof(_subsidies));
truelight@0: 	for (s=_subsidies; s != endof(_subsidies); s++)
truelight@0: 		s->cargo_type = 0xFF;
truelight@0: 
truelight@0: 	_cur_town_ctr = 0;
truelight@0: 	_town_sort_dirty = true;
truelight@0: 	_total_towns = 0;
truelight@0: }
truelight@0: 
truelight@0: const TileTypeProcs _tile_type_town_procs = {
truelight@0: 	DrawTile_Town,						/* draw_tile_proc */
truelight@0: 	GetSlopeZ_Town,						/* get_slope_z_proc */
truelight@0: 	ClearTile_Town,						/* clear_tile_proc */
truelight@0: 	GetAcceptedCargo_Town,		/* get_accepted_cargo_proc */
truelight@0: 	GetTileDesc_Town,					/* get_tile_desc_proc */
truelight@0: 	GetTileTrackStatus_Town,	/* get_tile_track_status_proc */
truelight@0: 	ClickTile_Town,						/* click_tile_proc */
truelight@0: 	AnimateTile_Town,					/* animate_tile_proc */
truelight@0: 	TileLoop_Town,						/* tile_loop_clear */
truelight@0: 	ChangeTileOwner_Town,			/* change_tile_owner_clear */
truelight@0: 	NULL,											/* get_produced_cargo_proc */
truelight@0: 	NULL,											/* vehicle_enter_tile_proc */
truelight@0: 	NULL,											/* vehicle_leave_tile_proc */
dominik@39: 	GetSlopeTileh_Town,				/* get_slope_tileh_proc */
truelight@0: };
truelight@0: 
truelight@0: 
truelight@0: // Save and load of towns.
truelight@0: static const byte _town_desc[] = {
tron@1174: 	SLE_CONDVAR(Town, xy, SLE_FILE_U16 | SLE_VAR_U32, 0, 5),
tron@1174: 	SLE_CONDVAR(Town, xy, SLE_UINT32, 6, 255),
truelight@193: 
truelight@0: 	SLE_CONDVAR(Town,population,	SLE_FILE_U16 | SLE_VAR_U32, 0, 2),
truelight@0: 	SLE_CONDVAR(Town,population,	SLE_UINT32, 3, 255),
truelight@0: 
truelight@0: 
truelight@0: 	SLE_VAR(Town,num_houses,	SLE_UINT16),
truelight@0: 	SLE_VAR(Town,townnametype,SLE_UINT16),
truelight@0: 	SLE_VAR(Town,townnameparts,SLE_UINT32),
truelight@0: 
truelight@0: 	SLE_VAR(Town,flags12,			SLE_UINT8),
truelight@0: 	SLE_VAR(Town,statues,			SLE_UINT8),
truelight@0: 
truelight@0: 	// sort_index_obsolete was stored here in savegame format 0 - 1
truelight@0: 	SLE_CONDARR(NullStruct,null,SLE_FILE_U8 | SLE_VAR_NULL, 1, 0, 1),
truelight@0: 
truelight@0: 	SLE_VAR(Town,have_ratings,SLE_UINT8),
truelight@0: 	SLE_ARR(Town,ratings,			SLE_INT16, 8),
truelight@0: 	// failed bribe attempts are stored since savegame format 4
truelight@0: 	SLE_CONDARR(Town,unwanted,			SLE_INT8, 8, 4,255),
truelight@0: 
truelight@0: 	SLE_VAR(Town,max_pass,		SLE_UINT16),
truelight@0: 	SLE_VAR(Town,max_mail,		SLE_UINT16),
truelight@0: 	SLE_VAR(Town,new_max_pass,SLE_UINT16),
truelight@0: 	SLE_VAR(Town,new_max_mail,SLE_UINT16),
truelight@0: 	SLE_VAR(Town,act_pass,		SLE_UINT16),
truelight@0: 	SLE_VAR(Town,act_mail,		SLE_UINT16),
truelight@0: 	SLE_VAR(Town,new_act_pass,SLE_UINT16),
truelight@0: 	SLE_VAR(Town,new_act_mail,SLE_UINT16),
truelight@0: 
truelight@0: 	SLE_VAR(Town,pct_pass_transported,SLE_UINT8),
truelight@0: 	SLE_VAR(Town,pct_mail_transported,SLE_UINT8),
truelight@0: 
truelight@0: 	SLE_VAR(Town,act_food,		SLE_UINT16),
darkvater@4: 	SLE_VAR(Town,act_water,		SLE_UINT16),
truelight@0: 	SLE_VAR(Town,new_act_food,SLE_UINT16),
darkvater@4: 	SLE_VAR(Town,new_act_water,SLE_UINT16),
truelight@0: 
truelight@0: 	SLE_VAR(Town,time_until_rebuild,		SLE_UINT8),
truelight@0: 	SLE_VAR(Town,grow_counter,					SLE_UINT8),
truelight@0: 	SLE_VAR(Town,growth_rate,						SLE_UINT8),
truelight@0: 	SLE_VAR(Town,fund_buildings_months,	SLE_UINT8),
truelight@0: 	SLE_VAR(Town,road_build_months,			SLE_UINT8),
truelight@0: 
dominik@121: 	SLE_VAR(Town,exclusivity,						SLE_UINT8),
dominik@121: 	SLE_VAR(Town,exclusive_counter,			SLE_UINT8),
dominik@121: 	// reserve extra space in savegame here. (currently 30 bytes)
dominik@121: 	SLE_CONDARR(NullStruct,null,SLE_FILE_U8 | SLE_VAR_NULL, 30, 2, 255),
truelight@0: 
truelight@0: 	SLE_END()
truelight@0: };
truelight@0: 
tron@1093: static void Save_TOWN(void)
truelight@0: {
truelight@0: 	Town *t;
truelight@0: 
truelight@919: 	FOR_ALL_TOWNS(t) {
truelight@919: 		if (t->xy != 0) {
truelight@919: 			SlSetArrayIndex(t->index);
truelight@919: 			SlObject(t, _town_desc);
truelight@919: 		}
truelight@0: 	}
truelight@0: }
truelight@0: 
tron@1093: static void Load_TOWN(void)
truelight@0: {
truelight@0: 	int index;
truelight@0: 	while ((index = SlIterateArray()) != -1) {
truelight@919: 		Town *t = GetTown(index);
truelight@919: 
truelight@0: 		SlObject(t, _town_desc);
truelight@543: 		if (index > _total_towns) _total_towns = index;
truelight@0: 	}
truelight@0: }
truelight@0: 
tron@1093: void AfterLoadTown(void)
truelight@0: {
truelight@0: 	Town *t;
truelight@0: 	FOR_ALL_TOWNS(t) {
truelight@0: 		if (t->xy != 0) {
truelight@0: 			UpdateTownRadius(t);
truelight@0: 			UpdateTownVirtCoord(t);
truelight@0: 		}
truelight@0: 	}
truelight@0: 	_town_sort_dirty = true;
truelight@0: }
truelight@0: 
truelight@0: 
truelight@0: const ChunkHandler _town_chunk_handlers[] = {
truelight@0: 	{ 'CITY', Save_TOWN, Load_TOWN, CH_ARRAY | CH_LAST},
truelight@0: };
truelight@0: 
truelight@0: