File diff r8397:b101adb0f649 → r8398:cf5cc32ab397
src/pathfind.cpp
Show inline comments
 
@@ -17,6 +17,7 @@
 
#include "depot.h"
 
#include "tunnelbridge_map.h"
 
#include "core/random_func.hpp"
 
#include "tunnelbridge.h"
 

	
 
/* remember which tiles we have already visited so we don't visit them again. */
 
static bool TPFSetTileBit(TrackPathFinder *tpf, TileIndex tile, int dir)
 
@@ -192,32 +193,6 @@ continue_here:
 

	
 
}
 

	
 

	
 
/* Returns the end tile and the length of a tunnel. The length does not
 
 * include the starting tile (entry), it does include the end tile (exit).
 
 */
 
FindLengthOfTunnelResult FindLengthOfTunnel(TileIndex tile, DiagDirection dir)
 
{
 
	TileIndexDiff delta = TileOffsByDiagDir(dir);
 
	uint z = GetTileZ(tile);
 
	FindLengthOfTunnelResult flotr;
 

	
 
	flotr.length = 0;
 

	
 
	dir = ReverseDiagDir(dir);
 
	do {
 
		flotr.length++;
 
		tile += delta;
 
	} while(
 
		!IsTunnelTile(tile) ||
 
		GetTunnelBridgeDirection(tile) != dir ||
 
		GetTileZ(tile) != z
 
	);
 

	
 
	flotr.tile = tile;
 
	return flotr;
 
}
 

	
 
/**
 
 * Checks if any vehicle can enter/leave tile in given diagdir
 
 * Checks only for rail/road depots and road non-drivethrough stations
 
@@ -257,7 +232,7 @@ static void TPFMode1(TrackPathFinder* tp
 
		if (dir == direction) {
 
			TileIndex endtile = GetOtherTunnelBridgeEnd(tile);
 

	
 
			tpf->rd.cur_length += DistanceManhattan(tile, endtile);
 
			tpf->rd.cur_length += GetTunnelBridgeLength(tile, endtile) + 1;
 

	
 
			TPFSetTileBit(tpf, tile, 14);
 
			TPFSetTileBit(tpf, endtile, 14);
 
@@ -665,8 +640,6 @@ start_at:
 
		if (IsTileType(tile, MP_TUNNELBRIDGE)) {
 
			if (IsTunnel(tile)) {
 
				if (GetTunnelBridgeDirection(tile) != ReverseDiagDir(direction)) {
 
					FindLengthOfTunnelResult flotr;
 

	
 
					/* We are not just driving out of the tunnel */
 
					if (GetTunnelBridgeDirection(tile) != direction ||
 
							GetTunnelBridgeTransportType(tile) != tpf->tracktype) {
 
@@ -677,9 +650,10 @@ start_at:
 
						bits = TRACK_BIT_NONE;
 
						break;
 
					}
 
					flotr = FindLengthOfTunnel(tile, direction);
 
					si.cur_length += flotr.length * DIAG_FACTOR;
 
					tile = flotr.tile;
 

	
 
					TileIndex endtile = GetOtherTunnelEnd(tile);
 
					si.cur_length += DIAG_FACTOR * (GetTunnelBridgeLength(tile, endtile) + 1);
 
					tile = endtile;
 
					/* tile now points to the exit tile of the tunnel */
 
				}
 
			} else { // IsBridge(tile)
 
@@ -693,7 +667,7 @@ start_at:
 
					}
 
				}
 
				tile_end = GetOtherBridgeEnd(tile);
 
				si.cur_length += DistanceManhattan(tile, tile_end) * DIAG_FACTOR;
 
				si.cur_length += DIAG_FACTOR * (GetTunnelBridgeLength(tile, tile_end) + 1);
 
				tile = tile_end;
 
			}
 
		}