cpp/openttd-patchpack/source Files · src/road_map.cpp

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Location: cpp/openttd-patchpack/source/src/road_map.cpp

r7882:cdf03a4ac84a 1.7 KiB text/x-c Show Annotation Show as Raw Download as Raw

rubidium

(svn r11433) -Fix: starting OpenTTD with DOS files made it look weird out of the box.
-Change: make extra sprites (the ones not in the TTD GRFs) replaceable using Action 5.
-Feature: make replacing contiguous subsets of sprites in for some types possible in Action 5.
Note to GRF authors: when you replaced OpenTTD sprites that are not from the TTD GRF files using Action A, your GRF will not have the intended result anymore as the sprite numbers have changed. You should replace the Action A with an Action 5 from now on.

/* $Id$ */

/** @file road_map.cpp */

#include "stdafx.h"
#include "openttd.h"
#include "bridge_map.h"
#include "functions.h"
#include "landscape.h"
#include "road_map.h"
#include "station.h"
#include "tunnel_map.h"
#include "station_map.h"
#include "depot.h"


RoadBits GetAnyRoadBits(TileIndex tile, RoadType rt)
{
	if (!HASBIT(GetRoadTypes(tile), rt)) return ROAD_NONE;

	switch (GetTileType(tile)) {
		case MP_ROAD:
			switch (GetRoadTileType(tile)) {
				default:
				case ROAD_TILE_NORMAL:   return GetRoadBits(tile, rt);
				case ROAD_TILE_CROSSING: return GetCrossingRoadBits(tile);
				case ROAD_TILE_DEPOT:    return DiagDirToRoadBits(GetRoadDepotDirection(tile));
			}

		case MP_STATION:
			if (!IsRoadStopTile(tile)) return ROAD_NONE;
			if (IsDriveThroughStopTile(tile)) return (GetRoadStopDir(tile) == DIAGDIR_NE) ? ROAD_X : ROAD_Y;
			return DiagDirToRoadBits(GetRoadStopDir(tile));

		case MP_TUNNELBRIDGE:
			if (IsTunnel(tile)) {
				if (GetTunnelTransportType(tile) != TRANSPORT_ROAD) return ROAD_NONE;
				return DiagDirToRoadBits(ReverseDiagDir(GetTunnelDirection(tile)));
			} else {
				if (GetBridgeTransportType(tile) != TRANSPORT_ROAD) return ROAD_NONE;
				return DiagDirToRoadBits(ReverseDiagDir(GetBridgeRampDirection(tile)));
			}

		default: return ROAD_NONE;
	}
}


TrackBits GetAnyRoadTrackBits(TileIndex tile, RoadType rt)
{
	uint32 r;

	/* Don't allow local authorities to build roads through road depots or road stops. */
	if ((IsTileType(tile, MP_ROAD) && IsTileDepotType(tile, TRANSPORT_ROAD)) || (IsTileType(tile, MP_STATION) && !IsDriveThroughStopTile(tile)) || !HASBIT(GetRoadTypes(tile), rt)) {
		return TRACK_BIT_NONE;
	}

	r = GetTileTrackStatus(tile, TRANSPORT_ROAD, RoadTypeToRoadTypes(rt));

	return (TrackBits)(byte)(r | (r >> 8));
}