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Add: [NewGRF] vehicle variable 63 to test the tracktype of the current tile against a given tracktype.

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frosch
2021-01-10 14:37:40 +01:00
committed by frosch
parent 5b08960560
commit 868d84bbfc
6 changed files with 87 additions and 1 deletions
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30
src/newgrf_engine.cpp
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@@ -702,6 +702,36 @@ static uint32 VehicleGetVariable(Vehicle *v, const VehicleScopeResolver *object,
return ret;
}
case 0x63:
/* Tile compatibility wrt. arbitrary track-type
* Format:
* bit 0: Type 'parameter' is known.
* bit 1: Engines with type 'parameter' are compatible with this tile.
* bit 2: Engines with type 'parameter' are powered on this tile.
* bit 3: This tile has type 'parameter' or it is considered equivalent (alternate labels).
*/
switch (v->type) {
case VEH_TRAIN: {
RailType param_type = GetRailTypeTranslation(parameter, object->ro.grffile);
if (param_type == INVALID_RAILTYPE) return 0x00;
RailType tile_type = GetTileRailType(v->tile);
if (tile_type == param_type) return 0x0F;
return (HasPowerOnRail(param_type, tile_type) ? 0x04 : 0x00) |
(IsCompatibleRail(param_type, tile_type) ? 0x02 : 0x00) |
0x01;
}
case VEH_ROAD: {
RoadTramType rtt = GetRoadTramType(RoadVehicle::From(v)->roadtype);
RoadType param_type = GetRoadTypeTranslation(rtt, parameter, object->ro.grffile);
if (param_type == INVALID_ROADTYPE) return 0x00;
RoadType tile_type = GetRoadType(v->tile, rtt);
if (tile_type == param_type) return 0x0F;
return (HasPowerOnRoad(param_type, tile_type) ? 0x06 : 0x00) |
0x01;
}
default: return 0x00;
}
case 0xFE:
case 0xFF: {
uint16 modflags = 0;