+
−/* $Id$ */
+
−
+
−#include "stdafx.h"
+
−#include "openttd.h"
+
−#include "bridge_map.h"
+
−#include "variables.h"
+
−
+
−
+
−TileIndex GetBridgeEnd(TileIndex tile, DiagDirection dir)
+
−{
+
−	TileIndexDiff delta = TileOffsByDiagDir(dir);
+
−
+
−	dir = ReverseDiagDir(dir);
+
−	do {
+
−		tile += delta;
+
−	} while (!IsBridgeTile(tile) || GetBridgeRampDirection(tile) != dir);
+
−
+
−	return tile;
+
−}
+
−
+
−
+
−TileIndex GetNorthernBridgeEnd(TileIndex t)
+
−{
+
−	return GetBridgeEnd(t, ReverseDiagDir(AxisToDiagDir(GetBridgeAxis(t))));
+
−}
+
−
+
−
+
−TileIndex GetSouthernBridgeEnd(TileIndex t)
+
−{
+
−	return GetBridgeEnd(t, AxisToDiagDir(GetBridgeAxis(t)));
+
−}
+
−
+
−
+
−TileIndex GetOtherBridgeEnd(TileIndex tile)
+
−{
+
−	assert(IsBridgeTile(tile));
+
−	return GetBridgeEnd(tile, GetBridgeRampDirection(tile));
+
−}
+
−
+
−uint GetBridgeHeight(TileIndex t)
+
−{
+
−	uint h;
+
−	Slope tileh = GetTileSlope(t, &h);
+
−	uint f = GetBridgeFoundation(tileh, DiagDirToAxis(GetBridgeRampDirection(t)));
+
−
+
−	// one height level extra if the ramp is on a flat foundation
+
−	return
+
−		h + TILE_HEIGHT +
+
−		(IS_INT_INSIDE(f, 1, 15) ? TILE_HEIGHT : 0) +
+
−		(IsSteepSlope(tileh) ? TILE_HEIGHT : 0);
+
−}