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OpenTTD-patches/road_cmd.c

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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"
/* 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)
{
byte b;
switch (GetTileType(tile)) {
case MP_STREET:
b = _m[tile].m5;
switch (GB(b, 4, 4)) {
case 0: break; // normal road
case 1: b = (b & 8 ? 5 : 10); break; // level crossing
case 2: return (~b & 3) == i; // depot
default: return false;
}
break;
case MP_STATION:
return
IS_BYTE_INSIDE(_m[tile].m5, 0x43, 0x43 + 8) &&
(~(_m[tile].m5 - 0x43) & 3) == i;
case MP_TUNNELBRIDGE:
// bail out, if not a bridge middle part with road underneath
if ((_m[tile].m5 & 0xF8) != 0xE8) return false;
// road direction perpendicular to bridge
b = (_m[tile].m5 & 0x01) ? 10 : 5;
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;
}
switch (ti.type) {
case 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;
case MP_STREET:
// check if you're allowed to remove the street owned by a town
// removal allowance depends on difficulty setting
if (!CheckforTownRating(flags, t, ROAD_REMOVE)) return CMD_ERROR;
switch (GB(ti.map5, 4, 4)) {
case 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 (GB(_m[tile].m5, 0, 4) == 0) {
DoClearSquare(tile);
} else {
MarkTileDirtyByTile(tile);
}
}
return cost;
}
case 1: { // level 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) {
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 */
);
}
return cost;
}
default: // depot
goto return_error;
}
default:
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;
switch (ti.type) {
case MP_STREET:
switch (GB(ti.map5, 4, 4)) {
case 0: // normal road
if ((pieces & (byte)ti.map5) == pieces) {
return_cmd_error(STR_1007_ALREADY_BUILT);
}
existing = ti.map5;
break;
case 1: // level crossing
if (pieces != (ti.map5 & 8 ? 5 : 10)) {
return_cmd_error(STR_1007_ALREADY_BUILT);
}
goto do_clear;
default: // depot
goto do_clear;
}
break;
case 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) {
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 */
);
}
return _price.build_road * 2;
}
case 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) != 0) == ((ti.map5 & 0x01U) != 0)) 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;
default:
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 || _is_old_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 |= 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 (GB(_m[tile].m4, 0, 4) == totype) return CMD_ERROR;
if (exec) {
// change type.
SB(_m[tile].m4, 0, 4, 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)
{
int32 cost;
Depot *dep;
TileIndex tile;
uint tileh;
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
if (p1 > 3) return CMD_ERROR; // check direction
tile = TileVirtXY(x, y);
if (!EnsureNoVehicle(tile)) return CMD_ERROR;
tileh = GetTileSlope(tile, NULL);
if (tileh != 0 && (
!_patches.build_on_slopes ||
IsSteepTileh(tileh) ||
!CanBuildDepotByTileh(p1, 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 (IsLocalPlayer()) _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)
{
byte m5 = _m[tile].m5;
switch (GB(_m[tile].m5, 4, 4)) {
case 0: { // normal road
byte b = m5 & 0xF;
if (!((1 << b) & (M(1)|M(2)|M(4)|M(8))) &&
(!(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);
}
case 1: { // level crossing
int32 ret;
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 (CmdFailed(ret)) return CMD_ERROR;
if (flags & DC_EXEC) {
DoCommandByTile(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
}
return ret;
}
default: // depot
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
};
/**
* Draw ground sprite and road pieces
* @param ti TileInfo
* @param road RoadBits to draw
* @param ground_type Ground type
* @param snow Draw snow
* @param flat Draw foundation
*/
static void DrawRoadBits(TileInfo *ti, byte road, byte ground_type, bool snow, bool flat)
{
const DrawRoadTileStruct *drts;
PalSpriteID image = 0;
if (ti->tileh != 0) {
int foundation;
if (flat) {
foundation = ti->tileh;
} else {
foundation = GetRoadFoundation(ti->tileh, road);
}
if (foundation != 0) DrawFoundation(ti, foundation);
// DrawFoundation() modifies ti.
// Default sloped sprites..
if (ti->tileh != 0) image = _road_sloped_sprites[ti->tileh - 1] + 0x53F;
}
if (image == 0) image = _road_tile_sprites_1[road];
if (ground_type == 0) image |= PALETTE_TO_BARE_LAND;
if (snow) {
image += 19;
} else if (ground_type > 1 && ground_type != 6) {
// Pavement tiles.
image -= 19;
}
DrawGroundSprite(image);
// Return if full detail is disabled, or we are zoomed fully out.
if (!(_display_opt & DO_FULL_DETAIL) || _cur_dpi->zoom == 2) return;
if (ground_type >= 6) {
// Road works
DrawGroundSprite(HASBIT(road, 3) ? SPR_EXCAVATION_X : SPR_EXCAVATION_Y);
return;
}
// Draw extra details.
for (drts = _road_display_table[ground_type][road]; drts->image != 0; drts++) {
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(drts->image, x, y, 2, 2, 0x10, z);
}
}
static void DrawTile_Road(TileInfo *ti)
{
PalSpriteID image;
uint16 m2;
switch (GB(ti->map5, 4, 4)) {
case 0: // normal road
DrawRoadBits(ti, GB(ti->map5, 0, 4), GB(_m[ti->tile].m4, 4, 3), HASBIT(_m[ti->tile].m4, 7), false);
break;
case 1: { // level crossing
int f = GetRoadFoundation(ti->tileh, ti->map5 & 0xF);
if (f) DrawFoundation(ti, f);
image = GetRailTypeInfo(GB(_m[ti->tile].m4, 0, 4))->base_sprites.crossing;
if (GB(ti->map5, 3, 1) == 0) image++; /* direction */
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);
break;
}
default: { // depot
uint32 ormod;
PlayerID 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) MAKE_TRANSPARENT(image);
AddSortableSpriteToDraw(image, ti->x | drss->subcoord_x,
ti->y | drss->subcoord_y, drss->width, drss->height, 0x14, ti->z
);
}
break;
}
}
}
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(const TileInfo* ti)
{
uint z = ti->z;
int th = ti->tileh;
// check if it's a foundation
if (ti->tileh != 0) {
switch (GB(ti->map5, 4, 4)) {
case 0: // normal road
case 1: { // level 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];
}
break;
}
case 2: // depot
return z + 8;
default: break;
}
return GetPartialZ(ti->x&0xF, ti->y&0xF, th) + z;
}
return z; // normal Z if no slope
}
static uint GetSlopeTileh_Road(const TileInfo *ti)
{
// check if it's a foundation
if (ti->tileh != 0) {
switch (GB(ti->map5, 4, 4)) {
case 0: // normal road
case 1: { // level 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];
}
break;
}
case 2: // depot
return 0;
default: break;
}
}
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;
switch (_opt.landscape) {
case LT_HILLY:
if ((_m[tile].m4 & 0x80) != (GetTileZ(tile) > _opt.snow_line ? 0x80 : 0x00)) {
_m[tile].m4 ^= 0x80;
MarkTileDirtyByTile(tile);
}
break;
case LT_DESERT:
if (GetMapExtraBits(tile) == 1 && !(_m[tile].m4 & 0x80)) {
_m[tile].m4 |= 0x80;
MarkTileDirtyByTile(tile);
}
break;
}
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;
}
SB(_m[tile].m4, 4, 3, b);
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 (GB(_m[tile].m5, 4, 4) == 2) 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)
{
switch (mode) {
case TRANSPORT_RAIL:
if (!IsLevelCrossing(tile)) return 0;
return _m[tile].m5 & 8 ? 0x101 : 0x202;
case TRANSPORT_ROAD:
switch (GB(_m[tile].m5, 4, 4)) {
case 0: // normal road
if (!_road_special_gettrackstatus && GB(_m[tile].m4, 4, 3) >= 6) {
return 0;
}
return _road_trackbits[GB(_m[tile].m5, 0, 4)] * 0x101;
case 1: { // level crossing
uint32 r = (_m[tile].m5 & 8 ? 0x202 : 0x101);
if (_m[tile].m5 & 4) r *= 0x10001;
return r;
}
default: // depot
break;
}
break;
default: break;
}
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 = GB(_m[tile].m5, 4, 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)
{
switch (GB(_m[tile].m5, 4, 4)) {
case 1: // level crossing
if (v->type == VEH_Train && GB(_m[tile].m5, 2, 1) == 0) {
/* train crossing a road */
SndPlayVehicleFx(SND_0E_LEVEL_CROSSING, v);
SB(_m[tile].m5, 2, 1, 1);
MarkTileDirtyByTile(tile);
}
break;
case 2: // depot
if (v->type == VEH_Road && v->u.road.frame == 11) {
if (_roadveh_enter_depot_unk0[GB(_m[tile].m5, 0, 2)] == v->u.road.state) {
RoadVehEnterDepot(v);
return 4;
}
}
break;
default: break;
}
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
SB(_m[tile].m5, 2, 1, 0);
MarkTileDirtyByTile(tile);
}
}
static void ChangeTileOwner_Road(TileIndex tile, PlayerID old_player, PlayerID new_player)
{
// 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 == OWNER_SPECTATOR) ? OWNER_NONE : new_player;
}
if (!IsTileOwner(tile, old_player)) return;
if (new_player != OWNER_SPECTATOR) {
SetTileOwner(tile, new_player);
} else {
switch (GB(_m[tile].m5, 4, 4)) {
case 0: // normal road
SetTileOwner(tile, OWNER_NONE);
break;
case 1: // level crossing
_m[tile].m5 = (_m[tile].m5&8) ? 0x5 : 0xA;
SetTileOwner(tile, _m[tile].m3);
_m[tile].m3 = 0;
_m[tile].m4 &= 0x80;
break;
default: // depot
DoCommandByTile(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
break;
}
}
}
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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