tron@3214: /* $Id$ */
tron@3214: 
tron@3214: #include "stdafx.h"
tron@3214: #include "openttd.h"
tron@3214: #include "bridge_map.h"
celestar@3933: #include "variables.h"
tron@3214: 
tron@3214: 
tron@3225: TileIndex GetBridgeEnd(TileIndex tile, DiagDirection dir)
tron@3225: {
tron@3225: 	TileIndexDiff delta = TileOffsByDir(dir);
tron@3225: 
celestar@3933: 	do { tile += delta; } while (IsBridgeAbove(tile) && IsBridgeOfAxis(tile, DiagDirToAxis(dir)));
tron@3225: 
tron@3225: 	return tile;
tron@3225: }
tron@3225: 
tron@3225: 
celestar@3933: TileIndex GetNorthernBridgeEnd(TileIndex t)
celestar@3933: {
celestar@3933: 	return GetBridgeEnd(t, ReverseDiagDir(AxisToDiagDir(GetBridgeAxis(t))));
celestar@3933: }
celestar@3933: 
celestar@3933: 
tron@3225: TileIndex GetSouthernBridgeEnd(TileIndex t)
tron@3225: {
tron@3225: 	return GetBridgeEnd(t, AxisToDiagDir(GetBridgeAxis(t)));
tron@3225: }
tron@3225: 
tron@3225: 
tron@3214: TileIndex GetOtherBridgeEnd(TileIndex tile)
tron@3214: {
celestar@3933: 	assert(IsBridgeTile(tile));
celestar@3933: 	return GetBridgeEnd(tile, GetBridgeRampDirection(tile));
celestar@3933: }
tron@3214: 
celestar@3933: uint GetBridgeHeight(TileIndex tile, Axis a)
celestar@3933: {
celestar@3933: 	uint h, f;
celestar@3933: 	uint tileh = GetTileSlope(tile, &h);
tron@3214: 
celestar@3933: 	f = GetBridgeFoundation(tileh, a);
celestar@3933: 
celestar@3933: 	if (f) {
celestar@3933: 		if (f < 15) {
celestar@3933: 			h += TILE_HEIGHT;
celestar@3933: 			tileh = SLOPE_FLAT;
celestar@3933: 		} else {
celestar@3933: 			tileh = _inclined_tileh[f - 15];
celestar@3933: 		}
celestar@3933: 	}
celestar@3933: 
celestar@3933: 	return h + TILE_HEIGHT;
tron@3214: }