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(svn r11965) -Codechange: simplified tunnel/bridge code in TPFMode1

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smatz 2008-01-23 18:24:04 +00:00
parent b718cae67d
commit 4cb91fa591
1 changed files with 18 additions and 37 deletions
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55
src/pathfind.cpp
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@ -220,50 +220,31 @@ FindLengthOfTunnelResult FindLengthOfTunnel(TileIndex tile, DiagDirection dir)
static const uint16 _tpfmode1_and[4] = { 0x1009, 0x16, 0x520, 0x2A00 };
static uint SkipToEndOfTunnel(TrackPathFinder* tpf, TileIndex tile, DiagDirection direction)
{
FindLengthOfTunnelResult flotr;
TPFSetTileBit(tpf, tile, 14);
flotr = FindLengthOfTunnel(tile, direction);
tpf->rd.cur_length += flotr.length;
TPFSetTileBit(tpf, flotr.tile, 14);
return flotr.tile;
}
static void TPFMode1(TrackPathFinder* tpf, TileIndex tile, DiagDirection direction)
{
TileIndex tile_org = tile;
const TileIndex tile_org = tile;
if (IsTileType(tile, MP_TUNNELBRIDGE)) {
if (IsTunnel(tile)) {
if (GetTunnelBridgeTransportType(tile) != tpf->tracktype) {
return;
}
/* Only skip through the tunnel if heading inwards. We can
* be headed outwards if our starting position was in a
* tunnel and we're pathfinding backwards */
if (GetTunnelBridgeDirection(tile) == direction) {
tile = SkipToEndOfTunnel(tpf, tile, direction);
} else if (GetTunnelBridgeDirection(tile) != ReverseDiagDir(direction)) {
/* We don't support moving through the sides of a tunnel
* entrance :-) */
return;
}
} else { // IsBridge(tile)
TileIndex tile_end;
if (GetTunnelBridgeDirection(tile) != direction ||
GetTunnelBridgeTransportType(tile) != tpf->tracktype) {
return;
}
//fprintf(stderr, "%s: Planning over bridge\n", __func__);
// TODO doesn't work - WHAT doesn't work?
TPFSetTileBit(tpf, tile, 14);
tile_end = GetOtherBridgeEnd(tile);
tpf->rd.cur_length += DistanceManhattan(tile, tile_end);
tile = tile_end;
/* wrong track type */
if (GetTunnelBridgeTransportType(tile) != tpf->tracktype) return;
DiagDirection dir = GetTunnelBridgeDirection(tile);
/* entering tunnel / bridge? */
if (dir == direction) {
TileIndex endtile = GetOtherTunnelBridgeEnd(tile);
tpf->rd.cur_length += DistanceManhattan(tile, endtile);
TPFSetTileBit(tpf, tile, 14);
TPFSetTileBit(tpf, endtile, 14);
tile = endtile;
} else {
/* leaving tunnel / bridge? */
if (ReverseDiagDir(dir) != direction) return;
}
}
tile += TileOffsByDiagDir(direction);
/* Check in case of rail if the owner is the same */