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OpenTTD-patches/road_cmd.c
celestar a3739aecdf (svn r2702) -Codechange: Cleaned up the sprite code and replaced many magic numbers 
by enums. There remains work in gfx.c to move the "transparency" and
"recolor" bits around to make space for more sprites. However, 2800
additional sprites can now be loaded. There also remains cleanup and
Doxygen work on many of the header files.
2005-07-24 15:56:31 +00:00

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/* $Id$ */
#include "stdafx.h"
#include "openttd.h"
#include "table/sprites.h"
#include "table/strings.h"
#include "functions.h"
#include "map.h"
#include "tile.h"
#include "vehicle.h"
#include "viewport.h"
#include "command.h"
#include "player.h"
#include "town.h"
#include "gfx.h"
#include "sound.h"
#include "depot.h"
#include "pbs.h"
#include "debug.h"
/* When true, GetTrackStatus for roads will treat roads under reconstruction
* as normal roads instead of impassable. This is used when detecting whether
* a road can be removed. This is of course ugly, but I don't know a better
* solution just like that... */
static bool _road_special_gettrackstatus;
void RoadVehEnterDepot(Vehicle *v);
static bool HasTileRoadAt(TileIndex tile, int i)
{
int mask;
byte b;
switch (GetTileType(tile)) {
case MP_STREET:
b = _m[tile].m5;
if ((b & 0xF0) == 0) {
} else if (IsLevelCrossing(tile)) {
b = (b&8)?5:10;
} else if ((b & 0xF0) == 0x20) {
return (~b & 3) == i;
} else
return false;
break;
case MP_STATION:
b = _m[tile].m5;
if (!IS_BYTE_INSIDE(b, 0x43, 0x43+8))
return false;
return ((~(b - 0x43) & 3) == i);
case MP_TUNNELBRIDGE:
mask = GetRoadBitsByTile(tile);
b = 10; if (mask & 1) break;
b = 5; if (mask & 2) break;
return false;
default:
return false;
}
return HASBIT(b, i);
}
static bool CheckAllowRemoveRoad(TileIndex tile, uint br, bool *edge_road)
{
int blocks;
byte owner;
uint n;
*edge_road = true;
if (_game_mode == GM_EDITOR)
return true;
blocks = GetRoadBitsByTile(tile);
if (blocks == 0)
return true;
// Only do the special processing for actual players.
if (_current_player >= MAX_PLAYERS)
return true;
// A railway crossing has the road owner in the map3_lo byte.
if (IsTileType(tile, MP_STREET) && IsLevelCrossing(tile)) {
owner = _m[tile].m3;
} else {
owner = GetTileOwner(tile);
}
// Only do the special processing if the road is owned
// by a town
if (owner != OWNER_TOWN) {
return owner == OWNER_NONE || CheckOwnership(owner);
}
if (_cheats.magic_bulldozer.value)
return true;
// Get a bitmask of which neighbouring roads has a tile
n = 0;
if (blocks&0x25 && HasTileRoadAt(TILE_ADDXY(tile,-1, 0), 1)) n |= 8;
if (blocks&0x2A && HasTileRoadAt(TILE_ADDXY(tile, 0, 1), 0)) n |= 4;
if (blocks&0x19 && HasTileRoadAt(TILE_ADDXY(tile, 1, 0), 3)) n |= 2;
if (blocks&0x16 && HasTileRoadAt(TILE_ADDXY(tile, 0,-1), 2)) n |= 1;
// If 0 or 1 bits are set in n, or if no bits that match the bits to remove,
// then allow it
if ((n & (n-1)) != 0 && (n & br) != 0) {
Town *t;
*edge_road = false;
// you can remove all kind of roads with extra dynamite
if (_patches.extra_dynamite)
return true;
t = ClosestTownFromTile(tile, _patches.dist_local_authority);
SetDParam(0, t->index);
_error_message = STR_2009_LOCAL_AUTHORITY_REFUSES;
return false;
}
return true;
}
uint GetRoadBitsByTile(TileIndex tile)
{
uint32 r = GetTileTrackStatus(tile, TRANSPORT_ROAD);
return (byte)(r | (r >> 8));
}
/** Delete a piece of road.
* @param x,y tile coordinates for road construction
* @param p1 road piece flags
* @param p2 unused
*/
int32 CmdRemoveRoad(int x, int y, uint32 flags, uint32 p1, uint32 p2)
{
// cost for removing inner/edge -roads
static const uint16 road_remove_cost[2] = {50, 18};
TileInfo ti;
int32 cost;
TileIndex tile;
PlayerID owner;
Town *t;
/* true if the roadpiece was always removeable,
* false if it was a center piece. Affects town ratings drop */
bool edge_road;
byte pieces = (byte)p1;
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
/* Road pieces are max 4 bitset values (NE, NW, SE, SW) */
if (pieces >> 4) return CMD_ERROR;
FindLandscapeHeight(&ti, x, y);
tile = ti.tile;
if (!IsTileType(tile, MP_STREET) && !IsTileType(tile, MP_TUNNELBRIDGE)) return CMD_ERROR;
// owner for railroad crossing is stored somewhere else
// XXX - Fix this so for a given tiletype the owner of the type is in the same variable
owner = IsLevelCrossing(tile) ? _m[tile].m3 : GetTileOwner(tile);
if (owner == OWNER_TOWN && _game_mode != GM_EDITOR) {
if (IsTileType(tile, MP_TUNNELBRIDGE)) { // index of town is not saved for bridge (no space)
t = ClosestTownFromTile(tile, _patches.dist_local_authority);
} else
t = GetTown(_m[tile].m2);
} else
t = NULL;
// allow deleting road under bridge
if (ti.type != MP_TUNNELBRIDGE && !EnsureNoVehicle(tile))
return CMD_ERROR;
{
bool b;
_road_special_gettrackstatus = true;
b = CheckAllowRemoveRoad(tile, pieces, &edge_road);
_road_special_gettrackstatus = false;
if (!b) return CMD_ERROR;
}
if (ti.type == MP_TUNNELBRIDGE) {
if (!EnsureNoVehicleZ(tile, TilePixelHeight(tile)))
return CMD_ERROR;
if ((ti.map5 & 0xE9) == 0xE8) {
if (pieces & 10) goto return_error;
} else if ((ti.map5 & 0xE9) == 0xE9) {
if (pieces & 5) goto return_error;
} else
goto return_error;
cost = _price.remove_road * 2;
if (flags & DC_EXEC) {
ChangeTownRating(t, -road_remove_cost[(byte)edge_road], RATING_ROAD_MINIMUM);
_m[tile].m5 = ti.map5 & 0xC7;
SetTileOwner(tile, OWNER_NONE);
MarkTileDirtyByTile(tile);
}
return cost;
} else if (ti.type == MP_STREET) {
// check if you're allowed to remove the street owned by a town
// removal allowance depends on difficulty setting
if (!CheckforTownRating(tile, flags, t, ROAD_REMOVE)) return CMD_ERROR;
// XXX - change cascading ifs to switch when doing rewrite
if ((ti.map5 & 0xF0) == 0) { // normal road
byte c = pieces, t2;
if (ti.tileh != 0 && (ti.map5 == 5 || ti.map5 == 10)) {
c |= (c & 0xC) >> 2;
c |= (c & 0x3) << 2;
}
// limit the bits to delete to the existing bits.
if ((c &= ti.map5) == 0) goto return_error;
// calculate the cost
t2 = c;
cost = 0;
do {
if (t2&1) cost += _price.remove_road;
} while(t2>>=1);
if (flags & DC_EXEC) {
ChangeTownRating(t, -road_remove_cost[(byte)edge_road], RATING_ROAD_MINIMUM);
_m[tile].m5 ^= c;
if ((_m[tile].m5&0xF) == 0)
DoClearSquare(tile);
else
MarkTileDirtyByTile(tile);
}
return cost;
} else if ((ti.map5 & 0xE0) == 0) { // railroad crossing
byte c;
if (!(ti.map5 & 8)) {
c = 2;
if (pieces & 5) goto return_error;
} else {
c = 1;
if (pieces & 10) goto return_error;
}
cost = _price.remove_road * 2;
if (flags & DC_EXEC) {
byte pbs_track = PBSTileReserved(tile);
ChangeTownRating(t, -road_remove_cost[(byte)edge_road], RATING_ROAD_MINIMUM);
ModifyTile(tile,
MP_SETTYPE(MP_RAILWAY) |
MP_MAP2_CLEAR | MP_MAP3LO | MP_MAP3HI_CLEAR | MP_MAP5,
_m[tile].m4 & 0xF, /* map3_lo */
c /* map5 */
);
if (pbs_track != 0)
PBSReserveTrack(tile, FIND_FIRST_BIT(pbs_track));
}
return cost;
} else
goto return_error;
} else {
return_error:;
return_cmd_error(INVALID_STRING_ID);
}
}
enum {
ROAD_NW = 1, // NW road track
ROAD_SW = 2, // SW road track
ROAD_SE = 4, // SE road track
ROAD_NE = 8, // NE road track
ROAD_ALL = (ROAD_NW | ROAD_SW | ROAD_SE | ROAD_NE)
};
static const byte _valid_tileh_slopes_road[3][15] = {
// set of normal ones
{
ROAD_ALL, 0, 0,
ROAD_SW | ROAD_NE, 0, 0, // 3, 4, 5
ROAD_NW | ROAD_SE, 0, 0,
ROAD_NW | ROAD_SE, 0, 0, // 9, 10, 11
ROAD_SW | ROAD_NE, 0, 0
},
// allowed road for an evenly raised platform
{
0,
ROAD_SW | ROAD_NW,
ROAD_SW | ROAD_SE,
ROAD_NW | ROAD_SE | ROAD_SW,
ROAD_SE | ROAD_NE, // 4
ROAD_ALL,
ROAD_SW | ROAD_NE | ROAD_SE,
ROAD_ALL,
ROAD_NW | ROAD_NE, // 8
ROAD_SW | ROAD_NE | ROAD_NW,
ROAD_ALL,
ROAD_ALL,
ROAD_NW | ROAD_SE | ROAD_NE, // 12
ROAD_ALL,
ROAD_ALL
},
// valid railway crossings on slopes
{
1, 0, 0, // 0, 1, 2
0, 0, 1, // 3, 4, 5
0, 1, 0, // 6, 7, 8
0, 1, 1, // 9, 10, 11
0, 1, 1, // 12, 13, 14
}
};
static uint32 CheckRoadSlope(int tileh, byte *pieces, byte existing)
{
if (!IsSteepTileh(tileh)) {
byte road_bits = *pieces | existing;
// no special foundation
if ((~_valid_tileh_slopes_road[0][tileh] & road_bits) == 0) {
// force that all bits are set when we have slopes
if (tileh != 0) *pieces |= _valid_tileh_slopes_road[0][tileh];
return 0; // no extra cost
}
// foundation is used. Whole tile is leveled up
if ((~_valid_tileh_slopes_road[1][tileh] & road_bits) == 0) {
return existing ? 0 : _price.terraform;
}
// partly leveled up tile, only if there's no road on that tile
if ( !existing && (tileh == 1 || tileh == 2 || tileh == 4 || tileh == 8) ) {
// force full pieces.
*pieces |= (*pieces & 0xC) >> 2;
*pieces |= (*pieces & 0x3) << 2;
return (*pieces == (ROAD_NE|ROAD_SW) || *pieces == (ROAD_SE|ROAD_NW)) ? _price.terraform : CMD_ERROR;
}
}
return CMD_ERROR;
}
/** Build a piece of road.
* @param x,y tile coordinates for road construction
* @param p1 road piece flags
* @param p2 the town that is building the road (0 if not applicable)
*/
int32 CmdBuildRoad(int x, int y, uint32 flags, uint32 p1, uint32 p2)
{
TileInfo ti;
int32 cost;
byte pieces = (byte)p1, existing = 0;
TileIndex tile;
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
/* Road pieces are max 4 bitset values (NE, NW, SE, SW) and town can only be non-zero
* if a non-player is building the road */
if ((pieces >> 4) || (_current_player < MAX_PLAYERS && p2 != 0) || !IsTownIndex(p2)) return CMD_ERROR;
FindLandscapeHeight(&ti, x, y);
tile = ti.tile;
// allow building road under bridge
if (ti.type != MP_TUNNELBRIDGE && !EnsureNoVehicle(tile)) return CMD_ERROR;
if (ti.type == MP_STREET) {
if (!(ti.map5 & 0xF0)) {
if ( (pieces & (byte)(ti.map5)) == (pieces))
return_cmd_error(STR_1007_ALREADY_BUILT);
existing = ti.map5;
} else {
if (!(ti.map5 & 0xE0) && pieces != ((ti.map5 & 8) ? 5 : 10))
return_cmd_error(STR_1007_ALREADY_BUILT);
goto do_clear;
}
} else if (ti.type == MP_RAILWAY) {
byte m5;
if (IsSteepTileh(ti.tileh)) // very steep tile
return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
if(!_valid_tileh_slopes_road[2][ti.tileh]) // prevent certain slopes
return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
if (ti.map5 == 2) {
if (pieces & 5) goto do_clear;
m5 = 0x10;
} else if (ti.map5 == 1) {
if (pieces & 10) goto do_clear;
m5 = 0x18;
} else
goto do_clear;
if (flags & DC_EXEC) {
byte pbs_track = PBSTileReserved(tile);
ModifyTile(tile,
MP_SETTYPE(MP_STREET) |
MP_MAP2 | MP_MAP3LO | MP_MAP3HI | MP_MAP5,
p2,
_current_player, /* map3_lo */
_m[tile].m3 & 0xF, /* map3_hi */
m5 /* map5 */
);
if (pbs_track != 0)
PBSReserveTrack(tile, FIND_FIRST_BIT(pbs_track));
}
return _price.build_road * 2;
} else if (ti.type == MP_TUNNELBRIDGE) {
/* check for flat land */
if (IsSteepTileh(ti.tileh)) // very steep tile
return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
/* is this middle part of a bridge? */
if ((ti.map5 & 0xC0) != 0xC0)
goto do_clear;
/* only allow roads pertendicular to bridge */
if ((pieces & 5U) == (ti.map5 & 0x01U))
goto do_clear;
/* check if clear land under bridge */
if ((ti.map5 & 0xF8) == 0xE8) /* road under bridge */
return_cmd_error(STR_1007_ALREADY_BUILT);
else if ((ti.map5 & 0xE0) == 0xE0) /* other transport route under bridge */
return_cmd_error(STR_1008_MUST_REMOVE_RAILROAD_TRACK);
else if ((ti.map5 & 0xF8) == 0xC8) /* water under bridge */
return_cmd_error(STR_3807_CAN_T_BUILD_ON_WATER);
/* all checked, can build road now! */
cost = _price.build_road * 2;
if (flags & DC_EXEC) {
ModifyTile(tile,
MP_MAPOWNER_CURRENT | MP_MAP5,
(ti.map5 & 0xC7) | 0x28 // map5
);
}
return cost;
} else {
do_clear:;
if (CmdFailed(DoCommandByTile(tile, 0, 0, flags & ~DC_EXEC, CMD_LANDSCAPE_CLEAR)))
return CMD_ERROR;
}
cost = CheckRoadSlope(ti.tileh, &pieces, existing);
if (CmdFailed(cost)) return_cmd_error(STR_1800_LAND_SLOPED_IN_WRONG_DIRECTION);
if (cost && (!_patches.build_on_slopes || (!_patches.ainew_active && _is_ai_player)))
return CMD_ERROR;
if (!(ti.type == MP_STREET && (ti.map5 & 0xF0) == 0)) {
cost += DoCommandByTile(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
} else {
// Don't put the pieces that already exist
pieces &= ~ti.map5;
}
{
byte t = pieces;
while (t) {
if (t & 1) cost += _price.build_road;
t >>= 1;
}
}
if (flags & DC_EXEC) {
if (ti.type != MP_STREET) {
SetTileType(tile, MP_STREET);
_m[tile].m5 = 0;
_m[tile].m2 = p2;
SetTileOwner(tile, _current_player);
}
_m[tile].m5 |= (byte)pieces;
MarkTileDirtyByTile(tile);
}
return cost;
}
int32 DoConvertStreetRail(TileIndex tile, uint totype, bool exec)
{
// not a railroad crossing?
if (!IsLevelCrossing(tile)) return CMD_ERROR;
// not owned by me?
if (!CheckTileOwnership(tile) || !EnsureNoVehicle(tile)) return CMD_ERROR;
// tile is already of requested type?
if ((_m[tile].m4 & 0xFU) == totype) return CMD_ERROR;
if (exec) {
// change type.
_m[tile].m4 = (_m[tile].m4 & 0xF0) + totype;
MarkTileDirtyByTile(tile);
}
return _price.build_rail >> 1;
}
/** Build a long piece of road.
* @param x,y end tile of drag
* @param p1 start tile of drag
* @param p2 various bitstuffed elements
* - p2 = (bit 0) - start tile starts in the 2nd half of tile (p2 & 1)
* - p2 = (bit 1) - end tile starts in the 2nd half of tile (p2 & 2)
* - p2 = (bit 2) - direction: 0 = along x-axis, 1 = along y-axis (p2 & 4)
*/
int32 CmdBuildLongRoad(int x, int y, uint32 flags, uint32 p1, uint32 p2)
{
TileIndex start_tile, end_tile, tile;
int32 cost, ret;
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
if (p1 > MapSize()) return CMD_ERROR;
start_tile = p1;
end_tile = TileVirtXY(x, y);
/* Only drag in X or Y direction dictated by the direction variable */
if (!HASBIT(p2, 2) && TileY(start_tile) != TileY(end_tile)) return CMD_ERROR; // x-axis
if (HASBIT(p2, 2) && TileX(start_tile) != TileX(end_tile)) return CMD_ERROR; // y-axis
/* Swap start and ending tile, also the half-tile drag var (bit 0 and 1) */
if (start_tile > end_tile || (start_tile == end_tile && HASBIT(p2, 0))) {
TileIndex t = start_tile;
start_tile = end_tile;
end_tile = t;
p2 ^= IS_INT_INSIDE(p2&3, 1, 3) ? 3 : 0;
}
cost = 0;
tile = start_tile;
// Start tile is the small number.
for (;;) {
uint bits = HASBIT(p2, 2) ? ROAD_SE | ROAD_NW : ROAD_SW | ROAD_NE;
if (tile == end_tile && !HASBIT(p2, 1)) bits &= ROAD_NW | ROAD_NE;
if (tile == start_tile && HASBIT(p2, 0)) bits &= ROAD_SE | ROAD_SW;
ret = DoCommandByTile(tile, bits, 0, flags, CMD_BUILD_ROAD);
if (CmdFailed(ret)) {
if (_error_message != STR_1007_ALREADY_BUILT) return CMD_ERROR;
} else
cost += ret;
if (tile == end_tile) break;
tile += HASBIT(p2, 2) ? TileDiffXY(0, 1) : TileDiffXY(1, 0);
}
return (cost == 0) ? CMD_ERROR : cost;
}
/** Remove a long piece of road.
* @param x,y end tile of drag
* @param p1 start tile of drag
* @param p2 various bitstuffed elements
* - p2 = (bit 0) - start tile starts in the 2nd half of tile (p2 & 1)
* - p2 = (bit 1) - end tile starts in the 2nd half of tile (p2 & 2)
* - p2 = (bit 2) - direction: 0 = along x-axis, 1 = along y-axis (p2 & 4)
*/
int32 CmdRemoveLongRoad(int x, int y, uint32 flags, uint32 p1, uint32 p2)
{
TileIndex start_tile, end_tile, tile;
int32 cost, ret;
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
if (p1 > MapSize()) return CMD_ERROR;
start_tile = p1;
end_tile = TileVirtXY(x, y);
/* Only drag in X or Y direction dictated by the direction variable */
if (!HASBIT(p2, 2) && TileY(start_tile) != TileY(end_tile)) return CMD_ERROR; // x-axis
if (HASBIT(p2, 2) && TileX(start_tile) != TileX(end_tile)) return CMD_ERROR; // y-axis
/* Swap start and ending tile, also the half-tile drag var (bit 0 and 1) */
if (start_tile > end_tile || (start_tile == end_tile && HASBIT(p2, 0))) {
TileIndex t = start_tile;
start_tile = end_tile;
end_tile = t;
p2 ^= IS_INT_INSIDE(p2&3, 1, 3) ? 3 : 0;
}
cost = 0;
tile = start_tile;
// Start tile is the small number.
for (;;) {
uint bits = HASBIT(p2, 2) ? ROAD_SE | ROAD_NW : ROAD_SW | ROAD_NE;
if (tile == end_tile && !HASBIT(p2, 1)) bits &= ROAD_NW | ROAD_NE;
if (tile == start_tile && HASBIT(p2, 0)) bits &= ROAD_SE | ROAD_SW;
// try to remove the halves.
if (bits) {
ret = DoCommandByTile(tile, bits, 0, flags, CMD_REMOVE_ROAD);
if (!CmdFailed(ret)) cost += ret;
}
if (tile == end_tile) break;
tile += HASBIT(p2, 2) ? TileDiffXY(0, 1) : TileDiffXY(1, 0);
}
return (cost == 0) ? CMD_ERROR : cost;
}
/** Build a road depot.
* @param x,y tile coordinates where the depot will be built
* @param p1 depot direction (0 through 3), where 0 is NW, 1 is NE, etc.
* @param p2 unused
*
* @todo When checking for the tile slope,
* distingush between "Flat land required" and "land sloped in wrong direction"
*/
int32 CmdBuildRoadDepot(int x, int y, uint32 flags, uint32 p1, uint32 p2)
{
TileInfo ti;
int32 cost;
Depot *dep;
TileIndex tile;
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
if (p1 > 3) return CMD_ERROR; // check direction
FindLandscapeHeight(&ti, x, y);
tile = ti.tile;
if (!EnsureNoVehicle(tile))
return CMD_ERROR;
if ((ti.tileh != 0) && (
!_patches.build_on_slopes ||
IsSteepTileh(ti.tileh) ||
!CanBuildDepotByTileh(p1, ti.tileh)
)
) {
return_cmd_error(STR_0007_FLAT_LAND_REQUIRED);
}
cost = DoCommandByTile(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
if (CmdFailed(cost)) return CMD_ERROR;
dep = AllocateDepot();
if (dep == NULL)
return CMD_ERROR;
if (flags & DC_EXEC) {
if (_current_player == _local_player) _last_built_road_depot_tile = tile;
dep->xy = tile;
dep->town_index = ClosestTownFromTile(tile, (uint)-1)->index;
ModifyTile(tile,
MP_SETTYPE(MP_STREET) |
MP_MAPOWNER_CURRENT | MP_MAP5,
(p1 | 0x20) /* map5 */
);
}
return cost + _price.build_road_depot;
}
static int32 RemoveRoadDepot(TileIndex tile, uint32 flags)
{
if (!CheckTileOwnership(tile) && _current_player != OWNER_WATER)
return CMD_ERROR;
if (!EnsureNoVehicle(tile))
return CMD_ERROR;
if (flags & DC_EXEC) {
DoDeleteDepot(tile);
}
return _price.remove_road_depot;
}
#define M(x) (1<<(x))
static int32 ClearTile_Road(TileIndex tile, byte flags)
{
int32 ret;
byte m5 = _m[tile].m5;
if ( (m5 & 0xF0) == 0) {
byte b = m5 & 0xF;
if (! ((1 << b) & (M(1)|M(2)|M(4)|M(8))) ) {
if ((!(flags & DC_AI_BUILDING) || !IsTileOwner(tile, OWNER_TOWN)) && flags & DC_AUTO)
return_cmd_error(STR_1801_MUST_REMOVE_ROAD_FIRST);
}
return DoCommandByTile(tile, b, 0, flags, CMD_REMOVE_ROAD);
} else if ( (m5 & 0xE0) == 0) {
if (flags & DC_AUTO)
return_cmd_error(STR_1801_MUST_REMOVE_ROAD_FIRST);
ret = DoCommandByTile(tile, (m5&8)?5:10, 0, flags, CMD_REMOVE_ROAD);
if (ret == CMD_ERROR)
return CMD_ERROR;
if (flags & DC_EXEC) {
DoCommandByTile(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
}
return ret;
} else {
if (flags & DC_AUTO)
return_cmd_error(STR_2004_BUILDING_MUST_BE_DEMOLISHED);
return RemoveRoadDepot(tile,flags);
}
}
typedef struct DrawRoadTileStruct {
uint16 image;
byte subcoord_x;
byte subcoord_y;
} DrawRoadTileStruct;
typedef struct DrawRoadSeqStruct {
uint32 image;
byte subcoord_x;
byte subcoord_y;
byte width;
byte height;
} DrawRoadSeqStruct;
#include "table/road_land.h"
uint GetRoadFoundation(uint tileh, uint bits) {
int i;
// normal level sloped building
if ((~_valid_tileh_slopes_road[1][tileh] & bits) == 0)
return tileh;
// inclined sloped building
if ( ((i=0, tileh == 1) || (i+=2, tileh == 2) || (i+=2, tileh == 4) || (i+=2, tileh == 8)) &&
((bits == (ROAD_SW | ROAD_NE)) || (i++, bits == (ROAD_NW | ROAD_SE))))
return i + 15;
// rail crossing
if ((bits & 0x10) && _valid_tileh_slopes_road[2][tileh])
return tileh;
return 0;
}
const byte _road_sloped_sprites[14] = {
0, 0, 2, 0,
0, 1, 0, 0,
3, 0, 0, 0,
0, 0
};
static void DrawTile_Road(TileInfo *ti)
{
uint32 image;
uint16 m2;
if ( (ti->map5 & 0xF0) == 0) { // if it is a road the upper 4 bits are 0
const DrawRoadTileStruct *drts;
if (ti->tileh != 0) {
int f = GetRoadFoundation(ti->tileh, ti->map5 & 0xF);
if (f) DrawFoundation(ti, f);
// default sloped sprites..
if (ti->tileh != 0) {
image = _road_sloped_sprites[ti->tileh - 1] + 0x53F;
} else {
image = _road_tile_sprites_1[ti->map5 & 0xF];
}
} else {
image = _road_tile_sprites_1[ti->map5 & 0xF];
}
m2 = GB(_m[ti->tile].m4, 4, 3);
if (m2 == 0) image |= PALETTE_TO_BARE_LAND;
if (_m[ti->tile].m4 & 0x80) {
image += 19;
} else if (m2 > 1 && m2 != 6) {
image -= 19; /* pavement along the road? */
}
DrawGroundSprite(image);
if (!(_display_opt & DO_FULL_DETAIL) || _cur_dpi->zoom == 2)
return;
if (m2 >= 6) {
// roadwork
DrawGroundSprite(0x586 + ((ti->map5&8)!=0 ? 0 : 1));
return;
}
drts = _road_display_table[m2][ti->map5 & 0xF];
while ((image = drts->image) != 0) {
int x = ti->x | drts->subcoord_x;
int y = ti->y | drts->subcoord_y;
byte z = ti->z;
if (ti->tileh != 0) z = GetSlopeZ(x, y);
AddSortableSpriteToDraw(image, x, y, 2, 2, 0x10, z);
drts++;
}
} else if ( (ti->map5 & 0xE0) == 0) { // railroad crossing
int f = GetRoadFoundation(ti->tileh, ti->map5 & 0xF);
if (f) DrawFoundation(ti, f);
image = 0x55B;
if ( (ti->map5 & 8) != 0)
image--;
if ( (ti->map5 & 4) != 0)
image += 2;
if ( _m[ti->tile].m4 & 0x80) {
image += 8;
} else {
m2 = GB(_m[ti->tile].m4, 4, 3);
if (m2 == 0) image |= PALETTE_TO_BARE_LAND;
if (m2 > 1) image += 4;
}
DrawGroundSprite(image + (_m[ti->tile].m4 & 0xF) * 12);
if (_debug_pbs_level >= 1) {
byte pbs = PBSTileReserved(ti->tile);
if (pbs & TRACK_BIT_DIAG1) DrawGroundSprite(0x3ED | PALETTE_CRASH);
if (pbs & TRACK_BIT_DIAG2) DrawGroundSprite(0x3EE | PALETTE_CRASH);
if (pbs & TRACK_BIT_UPPER) DrawGroundSprite(0x3EF | PALETTE_CRASH);
if (pbs & TRACK_BIT_LOWER) DrawGroundSprite(0x3F0 | PALETTE_CRASH);
if (pbs & TRACK_BIT_LEFT) DrawGroundSprite(0x3F2 | PALETTE_CRASH);
if (pbs & TRACK_BIT_RIGHT) DrawGroundSprite(0x3F1 | PALETTE_CRASH);
}
} else {
uint32 ormod;
int player;
const DrawRoadSeqStruct *drss;
if (ti->tileh != 0) { DrawFoundation(ti, ti->tileh); }
ormod = PALETTE_TO_GREY; //was this a bug/problem?
player = GetTileOwner(ti->tile);
if (player < MAX_PLAYERS)
ormod = PLAYER_SPRITE_COLOR(player);
drss = _road_display_datas[ti->map5 & 0xF];
DrawGroundSprite(drss++->image);
for (; drss->image != 0; drss++) {
uint32 image = drss->image;
if (image & PALETTE_MODIFIER_COLOR)
image |= ormod;
if (_display_opt & DO_TRANS_BUILDINGS) // show transparent depots
MAKE_TRANSPARENT(image);
AddSortableSpriteToDraw(image, ti->x | drss->subcoord_x,
ti->y | drss->subcoord_y, drss->width, drss->height, 0x14, ti->z);
}
}
}
void DrawRoadDepotSprite(int x, int y, int image)
{
uint32 ormod;
const DrawRoadSeqStruct *dtss;
ormod = PLAYER_SPRITE_COLOR(_local_player);
dtss = _road_display_datas[image];
x+=33;
y+=17;
DrawSprite(dtss++->image, x, y);
for(; dtss->image != 0; dtss++) {
Point pt = RemapCoords(dtss->subcoord_x, dtss->subcoord_y, 0);
image = dtss->image;
if (image & PALETTE_MODIFIER_COLOR)
image |= ormod;
DrawSprite(image, x + pt.x, y + pt.y);
}
}
static uint GetSlopeZ_Road(TileInfo *ti)
{
uint z = ti->z;
int th = ti->tileh;
// check if it's a foundation
if (ti->tileh != 0) {
if ((ti->map5 & 0xE0) == 0) { /* road or crossing */
uint f = GetRoadFoundation(ti->tileh, ti->map5 & 0x3F);
if (f != 0) {
if (f < 15) {
// leveled foundation
return z + 8;
}
// inclined foundation
th = _inclined_tileh[f - 15];
}
} else if ((ti->map5 & 0xF0) == 0x20) {
// depot
return z + 8;
}
return GetPartialZ(ti->x&0xF, ti->y&0xF, th) + z;
}
return z; // normal Z if no slope
}
static uint GetSlopeTileh_Road(TileInfo *ti)
{
// check if it's a foundation
if (ti->tileh != 0) {
if ((ti->map5 & 0xE0) == 0) { /* road or crossing */
uint f = GetRoadFoundation(ti->tileh, ti->map5 & 0x3F);
if (f != 0) {
if (f < 15) {
// leveled foundation
return 0;
}
// inclined foundation
return _inclined_tileh[f - 15];
}
} else if ((ti->map5 & 0xF0) == 0x20) {
// depot
return 0;
}
}
return ti->tileh;
}
static void GetAcceptedCargo_Road(TileIndex tile, AcceptedCargo ac)
{
/* not used */
}
static void AnimateTile_Road(TileIndex tile)
{
if (IsLevelCrossing(tile)) {
MarkTileDirtyByTile(tile);
}
}
static const byte _town_road_types[5][2] = {
{1,1},
{2,2},
{2,2},
{5,5},
{3,2},
};
static const byte _town_road_types_2[5][2] = {
{1,1},
{2,2},
{3,2},
{3,2},
{3,2},
};
static void TileLoop_Road(TileIndex tile)
{
Town *t;
int grp;
if (_opt.landscape == LT_HILLY) {
// Fix snow style if the road is above the snowline
if ((_m[tile].m4 & 0x80) != ((GetTileZ(tile) > _opt.snow_line) ? 0x80 : 0x00)) {
_m[tile].m4 ^= 0x80;
MarkTileDirtyByTile(tile);
}
} else if (_opt.landscape == LT_DESERT) {
// Fix desert style
if (GetMapExtraBits(tile) == 1 && !(_m[tile].m4 & 0x80)) {
_m[tile].m4 |= 0x80;
MarkTileDirtyByTile(tile);
}
}
if (_m[tile].m5 & 0xE0)
return;
if (GB(_m[tile].m4, 4, 3) < 6) {
t = ClosestTownFromTile(tile, (uint)-1);
grp = 0;
if (t != NULL) {
grp = GetTownRadiusGroup(t, tile);
// Show an animation to indicate road work
if (t->road_build_months != 0 &&
!(DistanceManhattan(t->xy, tile) >= 8 && grp == 0) &&
(_m[tile].m5==5 || _m[tile].m5==10)) {
if (GetTileSlope(tile, NULL) == 0 && EnsureNoVehicle(tile) && CHANCE16(1,20)) {
_m[tile].m4 |= (GB(_m[tile].m4, 4, 3) <= 2 ? 7 : 6) << 4;
SndPlayTileFx(SND_21_JACKHAMMER, tile);
CreateEffectVehicleAbove(
TileX(tile) * 16 + 7,
TileY(tile) * 16 + 7,
0,
EV_BULLDOZER);
MarkTileDirtyByTile(tile);
return;
}
}
}
{
const byte *p = (_opt.landscape == LT_CANDY) ? _town_road_types_2[grp] : _town_road_types[grp];
byte b = GB(_m[tile].m4, 4, 3);
if (b == p[0])
return;
if (b == p[1]) {
b = p[0];
} else if (b == 0) {
b = p[1];
} else {
b = 0;
}
_m[tile].m4 = (_m[tile].m4 & ~0x70) | (b << 4);
MarkTileDirtyByTile(tile);
}
} else {
// Handle road work
//XXX undocumented
byte b = _m[tile].m4;
//roadworks take place only
//keep roadworks running for 16 loops
//lower 4 bits of map3_hi store the counter now
if ((b & 0xF) != 0xF) {
_m[tile].m4 = b + 1;
return;
}
//roadworks finished
_m[tile].m4 = (GB(b, 4, 3) == 6 ? 1 : 2) << 4;
MarkTileDirtyByTile(tile);
}
}
void ShowRoadDepotWindow(TileIndex tile);
static void ClickTile_Road(TileIndex tile)
{
if ((_m[tile].m5 & 0xF0) == 0x20) {
ShowRoadDepotWindow(tile);
}
}
static const byte _road_trackbits[16] = {
0x0, 0x0, 0x0, 0x10, 0x0, 0x2, 0x8, 0x1A, 0x0, 0x4, 0x1, 0x15, 0x20, 0x26, 0x29, 0x3F,
};
static uint32 GetTileTrackStatus_Road(TileIndex tile, TransportType mode)
{
if (mode == TRANSPORT_RAIL) {
if (!IsLevelCrossing(tile))
return 0;
return _m[tile].m5 & 8 ? 0x101 : 0x202;
} else if (mode == TRANSPORT_ROAD) {
byte b = _m[tile].m5;
if ((b & 0xF0) == 0) {
/* Ordinary road */
if (!_road_special_gettrackstatus && GB(_m[tile].m4, 4, 3) >= 6)
return 0;
return _road_trackbits[b&0xF] * 0x101;
} else if (IsLevelCrossing(tile)) {
/* Crossing */
uint32 r = 0x101;
if (b&8) r <<= 1;
if (b&4) {
r *= 0x10001;
}
return r;
}
}
return 0;
}
static const StringID _road_tile_strings[] = {
STR_1818_ROAD_RAIL_LEVEL_CROSSING,
STR_1817_ROAD_VEHICLE_DEPOT,
STR_1814_ROAD,
STR_1814_ROAD,
STR_1814_ROAD,
STR_1815_ROAD_WITH_STREETLIGHTS,
STR_1814_ROAD,
STR_1816_TREE_LINED_ROAD,
STR_1814_ROAD,
STR_1814_ROAD,
};
static void GetTileDesc_Road(TileIndex tile, TileDesc *td)
{
int i = (_m[tile].m5 >> 4);
if (i == 0)
i = GB(_m[tile].m4, 4, 3) + 3;
td->str = _road_tile_strings[i - 1];
td->owner = GetTileOwner(tile);
}
static const byte _roadveh_enter_depot_unk0[4] = {
8, 9, 0, 1
};
static uint32 VehicleEnter_Road(Vehicle *v, TileIndex tile, int x, int y)
{
if (IsLevelCrossing(tile)) {
if (v->type == VEH_Train && (_m[tile].m5 & 4) == 0) {
/* train crossing a road */
SndPlayVehicleFx(SND_0E_LEVEL_CROSSING, v);
_m[tile].m5 |= 4;
MarkTileDirtyByTile(tile);
}
} else if ((_m[tile].m5&0xF0) == 0x20){
if (v->type == VEH_Road && v->u.road.frame == 11) {
if (_roadveh_enter_depot_unk0[_m[tile].m5&3] == v->u.road.state) {
RoadVehEnterDepot(v);
return 4;
}
}
}
return 0;
}
static void VehicleLeave_Road(Vehicle *v, TileIndex tile, int x, int y)
{
if (IsLevelCrossing(tile) && v->type == VEH_Train && v->next == NULL) {
// Turn off level crossing lights
_m[tile].m5 &= ~4;
MarkTileDirtyByTile(tile);
}
}
static void ChangeTileOwner_Road(TileIndex tile, byte old_player, byte new_player)
{
byte b;
// road/rail crossing where the road is owned by the current player?
if (old_player == _m[tile].m3 && IsLevelCrossing(tile)) {
_m[tile].m3 = (new_player == 0xFF) ? OWNER_NONE : new_player;
}
if (!IsTileOwner(tile, old_player)) return;
if (new_player != 255) {
SetTileOwner(tile, new_player);
} else {
b = _m[tile].m5&0xF0;
if (b == 0) {
SetTileOwner(tile, OWNER_NONE);
} else if (IsLevelCrossing(tile)) {
_m[tile].m5 = (_m[tile].m5&8) ? 0x5 : 0xA;
SetTileOwner(tile, _m[tile].m3);
_m[tile].m3 = 0;
_m[tile].m4 &= 0x80;
} else {
DoCommandByTile(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
}
}
}
void InitializeRoad(void)
{
_last_built_road_depot_tile = 0;
}
const TileTypeProcs _tile_type_road_procs = {
DrawTile_Road, /* draw_tile_proc */
GetSlopeZ_Road, /* get_slope_z_proc */
ClearTile_Road, /* clear_tile_proc */
GetAcceptedCargo_Road, /* get_accepted_cargo_proc */
GetTileDesc_Road, /* get_tile_desc_proc */
GetTileTrackStatus_Road, /* get_tile_track_status_proc */
ClickTile_Road, /* click_tile_proc */
AnimateTile_Road, /* animate_tile_proc */
TileLoop_Road, /* tile_loop_clear */
ChangeTileOwner_Road, /* change_tile_owner_clear */
NULL, /* get_produced_cargo_proc */
VehicleEnter_Road, /* vehicle_enter_tile_proc */
VehicleLeave_Road, /* vehicle_leave_tile_proc */
GetSlopeTileh_Road, /* get_slope_tileh_proc */
};
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