--- a/src/tunnel_map.cpp Sun Apr 15 17:04:44 2007 +0000
+++ b/src/tunnel_map.cpp Sat Apr 21 08:23:57 2007 +0000
@@ -7,6 +7,12 @@
#include "tile.h"
#include "tunnel_map.h"
+/**
+ * Gets the other end of the tunnel. Where a vehicle would reappear when it
+ * enters at the given tile.
+ * @param tile the tile to search from.
+ * @return the tile of the other end of the tunnel.
+ */
TileIndex GetOtherTunnelEnd(TileIndex tile)
{
DiagDirection dir = GetTunnelDirection(tile);
@@ -26,6 +32,13 @@
}
+/**
+ * Is there a tunnel in the way in the given direction?
+ * @param tile the tile to search from.
+ * @param z the 'z' to search on.
+ * @param dir the direction to start searching to.
+ * @return true if and only if there is a tunnel.
+ */
static bool IsTunnelInWayDir(TileIndex tile, uint z, DiagDirection dir)
{
TileIndexDiff delta = TileOffsByDiagDir(dir);
@@ -42,6 +55,12 @@
GetTunnelDirection(tile) == dir;
}
+/**
+ * Is there a tunnel in the way in any direction?
+ * @param tile the tile to search from.
+ * @param z the 'z' to search on.
+ * @return true if and only if there is a tunnel.
+ */
bool IsTunnelInWay(TileIndex tile, uint z)
{
return