pbs.c
author Darkvater
Thu, 26 Jan 2006 18:45:04 +0000
changeset 2892 390125af7685
parent 2668 54d9f9d4dca3
permissions -rw-r--r--
(svn r3446) - Fix: incorrect validating of tree-planting command which can allow a buffer-overflow (Tron)
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461a2aff3486 (svn r2701) Insert Id tags into all source files
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/* $Id$ */
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2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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#include "stdafx.h"
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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#include "openttd.h"
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#include "functions.h"
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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#include "pbs.h"
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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#include "debug.h"
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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#include "map.h"
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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#include "tile.h"
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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#include "npf.h"
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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#include "pathfind.h"
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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#include "depot.h"
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54d9f9d4dca3 (svn r3210) -Codechange: use IsRailWaypoint where possible (instead of magicnumbers)
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#include "waypoint.h"
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
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c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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/** @file pbs.c Path-Based-Signalling implementation file
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 *  @see pbs.h */
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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/* reserved track encoding:
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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 normal railway tracks:
2017
16c2d8b875d1 (svn r2525) - Fix: [pbs] Fix a mistake in the comments/docs.
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   map3hi bits 4..6 = 'Track'number of reserved track + 1, if this is zero it means nothing is reserved on this tile
16c2d8b875d1 (svn r2525) - Fix: [pbs] Fix a mistake in the comments/docs.
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   map3hi bit  7    = if this is set, then the opposite track ('Track'number^1) is also reserved
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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 waypoints/stations:
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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   map3lo bit 6 set = track is reserved
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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 tunnels/bridges:
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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   map3hi bit 0 set = track with 'Track'number 0 is reserved
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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   map3hi bit 1 set = track with 'Track'number 1 is reserved
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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 level crossings:
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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   map5 bit 0 set = the rail track is reserved
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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*/
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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/**
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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 * maps an encoded reserved track (from map3lo bits 4..7)
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 * to the tracks that are reserved.
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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 * 0xFF are invalid entries and should never be accessed.
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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 */
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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static const byte encrt_to_reserved[16] = {
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	0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0xFF,
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	0xFF, 0xFF, 0xFF, 0x0C, 0x0C, 0x30, 0x30, 0xFF
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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};
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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/**
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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 * maps an encoded reserved track (from map3lo bits 4..7)
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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 * to the track(dir)s that are unavailable due to reservations.
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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 * 0xFFFF are invalid entries and should never be accessed.
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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 */
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static const uint16 encrt_to_unavail[16] = {
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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	0x0000, 0x3F3F, 0x3F3F, 0x3737, 0x3B3B, 0x1F1F, 0x2F2F, 0xFFFF,
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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	0xFFFF, 0xFFFF, 0xFFFF, 0x3F3F, 0x3F3F, 0x3F3F, 0x3F3F, 0xFFFF
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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};
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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void PBSReserveTrack(TileIndex tile, Track track) {
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	assert(IsValidTile(tile));
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	assert(track <= 5);
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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	switch (GetTileType(tile)) {
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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		case MP_RAILWAY:
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			if (IsRailWaypoint(tile)) {
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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				// waypoint
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				SETBIT(_m[tile].m3, 6);
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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			} else {
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				// normal rail track
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				byte encrt = GB(_m[tile].m4, 4, 4); // get current encoded info (see comments at top of file)
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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				if (encrt == 0) // nothing reserved before
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					encrt = track + 1;
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				else if (encrt == (track^1) + 1) // opposite track reserved before
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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					encrt |= 8;
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				SB(_m[tile].m4, 4, 4, encrt);
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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			}
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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			break;
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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		case MP_TUNNELBRIDGE:
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			_m[tile].m4 |= (1 << track) & 3;
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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			break;
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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		case MP_STATION:
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ad0d49c916d4 (svn r2558) Change the internal map format from 7 arrays to one array of structs, this doesn't change the saved format for now. It's a stepping stone for further changes.
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			SETBIT(_m[tile].m3, 6);
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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			break;
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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    77
		case MP_STREET:
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
    78
			// make sure it is a railroad crossing
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
    79
			if (!IsLevelCrossing(tile)) return;
2049
ad0d49c916d4 (svn r2558) Change the internal map format from 7 arrays to one array of structs, this doesn't change the saved format for now. It's a stepping stone for further changes.
tron
parents: 2017
diff changeset
    80
			SETBIT(_m[tile].m5, 0);
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
    81
			break;
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
    82
		default:
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
    83
			return;
2182
89e6e39734a4 (svn r2696) Remove stray semicolons
tron
parents: 2164
diff changeset
    84
	}
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
    85
	// if debugging, mark tile dirty to show reserved status
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
    86
	if (_debug_pbs_level >= 1)
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
    87
		MarkTileDirtyByTile(tile);
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
    88
}
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
    89
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
    90
byte PBSTileReserved(TileIndex tile) {
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
    91
	assert(IsValidTile(tile));
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
    92
	switch (GetTileType(tile)) {
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
    93
		case MP_RAILWAY:
2668
54d9f9d4dca3 (svn r3210) -Codechange: use IsRailWaypoint where possible (instead of magicnumbers)
truelight
parents: 2493
diff changeset
    94
			if (IsRailWaypoint(tile)) {
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
    95
				// waypoint
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
    96
				// check if its reserved
2049
ad0d49c916d4 (svn r2558) Change the internal map format from 7 arrays to one array of structs, this doesn't change the saved format for now. It's a stepping stone for further changes.
tron
parents: 2017
diff changeset
    97
				if (!HASBIT(_m[tile].m3, 6)) return 0;
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
    98
				// return the track for the correct direction
2049
ad0d49c916d4 (svn r2558) Change the internal map format from 7 arrays to one array of structs, this doesn't change the saved format for now. It's a stepping stone for further changes.
tron
parents: 2017
diff changeset
    99
				return HASBIT(_m[tile].m5, 0) ? 2 : 1;
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   100
			} else {
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   101
				// normal track
2493
d834d0c1502a (svn r3019) -Codechange: Replace explicit shifting/anding/oring with GB and SB
tron
parents: 2186
diff changeset
   102
				byte res = encrt_to_reserved[GB(_m[tile].m4, 4, 4)];
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   103
				assert(res != 0xFF);
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   104
				return res;
2182
89e6e39734a4 (svn r2696) Remove stray semicolons
tron
parents: 2164
diff changeset
   105
			}
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   106
		case MP_TUNNELBRIDGE:
2493
d834d0c1502a (svn r3019) -Codechange: Replace explicit shifting/anding/oring with GB and SB
tron
parents: 2186
diff changeset
   107
			return GB(_m[tile].m4, 0, 2);
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   108
		case MP_STATION:
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   109
			// check if its reserved
2049
ad0d49c916d4 (svn r2558) Change the internal map format from 7 arrays to one array of structs, this doesn't change the saved format for now. It's a stepping stone for further changes.
tron
parents: 2017
diff changeset
   110
			if (!HASBIT(_m[tile].m3, 6)) return 0;
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   111
			// return the track for the correct direction
2049
ad0d49c916d4 (svn r2558) Change the internal map format from 7 arrays to one array of structs, this doesn't change the saved format for now. It's a stepping stone for further changes.
tron
parents: 2017
diff changeset
   112
			return HASBIT(_m[tile].m5, 0) ? 2 : 1;
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   113
		case MP_STREET:
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   114
			// make sure its a railroad crossing
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   115
			if (!IsLevelCrossing(tile)) return 0;
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   116
			// check if its reserved
2049
ad0d49c916d4 (svn r2558) Change the internal map format from 7 arrays to one array of structs, this doesn't change the saved format for now. It's a stepping stone for further changes.
tron
parents: 2017
diff changeset
   117
			if (!HASBIT(_m[tile].m5, 0)) return 0;
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   118
			// return the track for the correct direction
2049
ad0d49c916d4 (svn r2558) Change the internal map format from 7 arrays to one array of structs, this doesn't change the saved format for now. It's a stepping stone for further changes.
tron
parents: 2017
diff changeset
   119
			return HASBIT(_m[tile].m5, 3) ? 1 : 2;
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   120
		default:
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   121
			return 0;
2182
89e6e39734a4 (svn r2696) Remove stray semicolons
tron
parents: 2164
diff changeset
   122
	}
89e6e39734a4 (svn r2696) Remove stray semicolons
tron
parents: 2164
diff changeset
   123
}
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   124
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   125
uint16 PBSTileUnavail(TileIndex tile) {
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   126
	assert(IsValidTile(tile));
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   127
	switch (GetTileType(tile)) {
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   128
		case MP_RAILWAY:
2668
54d9f9d4dca3 (svn r3210) -Codechange: use IsRailWaypoint where possible (instead of magicnumbers)
truelight
parents: 2493
diff changeset
   129
			if (IsRailWaypoint(tile)) {
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   130
				// waypoint
2049
ad0d49c916d4 (svn r2558) Change the internal map format from 7 arrays to one array of structs, this doesn't change the saved format for now. It's a stepping stone for further changes.
tron
parents: 2017
diff changeset
   131
				return HASBIT(_m[tile].m3, 6) ? TRACKDIR_BIT_MASK : 0;
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   132
			} else {
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   133
				// normal track
2493
d834d0c1502a (svn r3019) -Codechange: Replace explicit shifting/anding/oring with GB and SB
tron
parents: 2186
diff changeset
   134
				uint16 res = encrt_to_unavail[GB(_m[tile].m4, 4, 4)];
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   135
				assert(res != 0xFFFF);
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   136
				return res;
2182
89e6e39734a4 (svn r2696) Remove stray semicolons
tron
parents: 2164
diff changeset
   137
			}
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   138
		case MP_TUNNELBRIDGE:
2493
d834d0c1502a (svn r3019) -Codechange: Replace explicit shifting/anding/oring with GB and SB
tron
parents: 2186
diff changeset
   139
			return GB(_m[tile].m4, 0, 2) | (GB(_m[tile].m4, 0, 2) << 8);
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   140
		case MP_STATION:
2049
ad0d49c916d4 (svn r2558) Change the internal map format from 7 arrays to one array of structs, this doesn't change the saved format for now. It's a stepping stone for further changes.
tron
parents: 2017
diff changeset
   141
			return HASBIT(_m[tile].m3, 6) ? TRACKDIR_BIT_MASK : 0;
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   142
		case MP_STREET:
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   143
			// make sure its a railroad crossing
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   144
			if (!IsLevelCrossing(tile)) return 0;
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   145
			// check if its reserved
2049
ad0d49c916d4 (svn r2558) Change the internal map format from 7 arrays to one array of structs, this doesn't change the saved format for now. It's a stepping stone for further changes.
tron
parents: 2017
diff changeset
   146
			return (HASBIT(_m[tile].m5, 0)) ? TRACKDIR_BIT_MASK : 0;
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   147
		default:
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   148
			return 0;
2182
89e6e39734a4 (svn r2696) Remove stray semicolons
tron
parents: 2164
diff changeset
   149
	}
89e6e39734a4 (svn r2696) Remove stray semicolons
tron
parents: 2164
diff changeset
   150
}
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   151
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   152
void PBSClearTrack(TileIndex tile, Track track) {
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   153
	assert(IsValidTile(tile));
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   154
	assert(track <= 5);
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   155
	switch (GetTileType(tile)) {
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   156
		case MP_RAILWAY:
2668
54d9f9d4dca3 (svn r3210) -Codechange: use IsRailWaypoint where possible (instead of magicnumbers)
truelight
parents: 2493
diff changeset
   157
			if (IsRailWaypoint(tile)) {
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   158
				// waypoint
2049
ad0d49c916d4 (svn r2558) Change the internal map format from 7 arrays to one array of structs, this doesn't change the saved format for now. It's a stepping stone for further changes.
tron
parents: 2017
diff changeset
   159
				CLRBIT(_m[tile].m3, 6);
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   160
			} else {
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   161
				// normal rail track
2493
d834d0c1502a (svn r3019) -Codechange: Replace explicit shifting/anding/oring with GB and SB
tron
parents: 2186
diff changeset
   162
				byte encrt = GB(_m[tile].m4, 4, 4);
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   163
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   164
				if (encrt == track + 1)
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   165
					encrt = 0;
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   166
				else if (encrt == track + 1 + 8)
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   167
					encrt = (track^1) + 1;
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   168
				else if (encrt == (track^1) + 1 + 8)
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   169
					encrt &= 7;
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   170
2493
d834d0c1502a (svn r3019) -Codechange: Replace explicit shifting/anding/oring with GB and SB
tron
parents: 2186
diff changeset
   171
				SB(_m[tile].m4, 4, 4, encrt);
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   172
			}
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   173
			break;
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   174
		case MP_TUNNELBRIDGE:
2049
ad0d49c916d4 (svn r2558) Change the internal map format from 7 arrays to one array of structs, this doesn't change the saved format for now. It's a stepping stone for further changes.
tron
parents: 2017
diff changeset
   175
			_m[tile].m4 &= ~((1 << track) & 3);
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   176
			break;
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   177
		case MP_STATION:
2049
ad0d49c916d4 (svn r2558) Change the internal map format from 7 arrays to one array of structs, this doesn't change the saved format for now. It's a stepping stone for further changes.
tron
parents: 2017
diff changeset
   178
			CLRBIT(_m[tile].m3, 6);
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   179
			break;
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   180
		case MP_STREET:
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   181
			// make sure it is a railroad crossing
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   182
			if (!IsLevelCrossing(tile)) return;
2049
ad0d49c916d4 (svn r2558) Change the internal map format from 7 arrays to one array of structs, this doesn't change the saved format for now. It's a stepping stone for further changes.
tron
parents: 2017
diff changeset
   183
			CLRBIT(_m[tile].m5, 0);
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   184
			break;
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   185
		default:
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   186
			return;
2182
89e6e39734a4 (svn r2696) Remove stray semicolons
tron
parents: 2164
diff changeset
   187
	}
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   188
	// if debugging, mark tile dirty to show reserved status
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   189
	if (_debug_pbs_level >= 1)
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   190
		MarkTileDirtyByTile(tile);
2182
89e6e39734a4 (svn r2696) Remove stray semicolons
tron
parents: 2164
diff changeset
   191
}
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   192
2115
71e12444631c (svn r2625) - Fix: [pbs] Store the end of a train's reserved path explicitly. Prevents trains from unreserving eachothers paths in some cases.
hackykid
parents: 2049
diff changeset
   193
void PBSClearPath(TileIndex tile, Trackdir trackdir, TileIndex end_tile, Trackdir end_trackdir) {
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   194
	uint16 res;
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   195
	FindLengthOfTunnelResult flotr;
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   196
	assert(IsValidTile(tile));
2115
71e12444631c (svn r2625) - Fix: [pbs] Store the end of a train's reserved path explicitly. Prevents trains from unreserving eachothers paths in some cases.
hackykid
parents: 2049
diff changeset
   197
	assert(IsValidTrackdir(trackdir));
71e12444631c (svn r2625) - Fix: [pbs] Store the end of a train's reserved path explicitly. Prevents trains from unreserving eachothers paths in some cases.
hackykid
parents: 2049
diff changeset
   198
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   199
	do {
2115
71e12444631c (svn r2625) - Fix: [pbs] Store the end of a train's reserved path explicitly. Prevents trains from unreserving eachothers paths in some cases.
hackykid
parents: 2049
diff changeset
   200
		PBSClearTrack(tile, TrackdirToTrack(trackdir));
71e12444631c (svn r2625) - Fix: [pbs] Store the end of a train's reserved path explicitly. Prevents trains from unreserving eachothers paths in some cases.
hackykid
parents: 2049
diff changeset
   201
71e12444631c (svn r2625) - Fix: [pbs] Store the end of a train's reserved path explicitly. Prevents trains from unreserving eachothers paths in some cases.
hackykid
parents: 2049
diff changeset
   202
		if (tile == end_tile && TrackdirToTrack(trackdir) == TrackdirToTrack(end_trackdir))
71e12444631c (svn r2625) - Fix: [pbs] Store the end of a train's reserved path explicitly. Prevents trains from unreserving eachothers paths in some cases.
hackykid
parents: 2049
diff changeset
   203
			return;
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   204
2493
d834d0c1502a (svn r3019) -Codechange: Replace explicit shifting/anding/oring with GB and SB
tron
parents: 2186
diff changeset
   205
		if (IsTileType(tile, MP_TUNNELBRIDGE) &&
d834d0c1502a (svn r3019) -Codechange: Replace explicit shifting/anding/oring with GB and SB
tron
parents: 2186
diff changeset
   206
				GB(_m[tile].m5, 4, 4) == 0 &&
d834d0c1502a (svn r3019) -Codechange: Replace explicit shifting/anding/oring with GB and SB
tron
parents: 2186
diff changeset
   207
				GB(_m[tile].m5, 0, 2) == TrackdirToExitdir(trackdir)) {
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   208
			// this is a tunnel
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   209
			flotr = FindLengthOfTunnel(tile, TrackdirToExitdir(trackdir));
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   210
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   211
			tile = flotr.tile;
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   212
		} else {
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   213
			byte exitdir = TrackdirToExitdir(trackdir);
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   214
			tile = AddTileIndexDiffCWrap(tile, TileIndexDiffCByDir(exitdir));
2182
89e6e39734a4 (svn r2696) Remove stray semicolons
tron
parents: 2164
diff changeset
   215
		}
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   216
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   217
		res = PBSTileReserved(tile);
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   218
		res |= res << 8;
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   219
		res &= TrackdirReachesTrackdirs(trackdir);
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   220
		trackdir = FindFirstBit2x64(res);
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   221
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   222
	} while (res != 0);
2182
89e6e39734a4 (svn r2696) Remove stray semicolons
tron
parents: 2164
diff changeset
   223
}
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   224
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   225
bool PBSIsPbsSignal(TileIndex tile, Trackdir trackdir)
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   226
{
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   227
	assert(IsValidTile(tile));
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   228
	assert(IsValidTrackdir(trackdir));
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   229
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   230
	if (!_patches.new_pathfinding_all)
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   231
		return false;
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   232
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   233
	if (!IsTileType(tile, MP_RAILWAY))
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   234
		return false;
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   235
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   236
	if (GetRailTileType(tile) != RAIL_TYPE_SIGNALS)
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   237
		return false;
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   238
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
hackykid
parents:
diff changeset
   239
	if (!HasSignalOnTrackdir(tile, trackdir))
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		return false;
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c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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	if (GetSignalType(tile, TrackdirToTrack(trackdir)) == 4)
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		return true;
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	else
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		return false;
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}
2008
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c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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typedef struct SetSignalsDataPbs {
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	int cur;
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	// these are used to keep track of the signals.
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	byte bit[NUM_SSD_ENTRY];
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	TileIndex tile[NUM_SSD_ENTRY];
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} SetSignalsDataPbs;
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c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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// This function stores the signals inside the SetSignalsDataPbs struct, passed as callback to FollowTrack() in the PBSIsPbsSegment() function below
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static bool SetSignalsEnumProcPBS(uint tile, SetSignalsDataPbs *ssd, int trackdir, uint length, byte *state)
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{
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	// the tile has signals?
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	if (IsTileType(tile, MP_RAILWAY)) {
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		if (HasSignalOnTrack(tile, TrackdirToTrack(trackdir))) {
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c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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				if (ssd->cur != NUM_SSD_ENTRY) {
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					ssd->tile[ssd->cur] = tile; // remember the tile index
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					ssd->bit[ssd->cur] = TrackdirToTrack(trackdir); // and the controlling bit number
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					ssd->cur++;
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				}
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				return true;
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		} else if (IsTileDepotType(tile, TRANSPORT_RAIL))
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			return true; // don't look further if the tile is a depot
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	}
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	return false;
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}
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2164
74c8163d1e14 (svn r2674) - CodeChange: [pbs] Generalise the PSBISPbsDepot function so it can check if an arbitrary junction is a pbs junction. Preparations for making pbs more safe.
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bool PBSIsPbsSegment(uint tile, Trackdir trackdir)
2008
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{
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	SetSignalsDataPbs ssd;
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74c8163d1e14 (svn r2674) - CodeChange: [pbs] Generalise the PSBISPbsDepot function so it can check if an arbitrary junction is a pbs junction. Preparations for making pbs more safe.
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	bool result = PBSIsPbsSignal(tile, trackdir);
74c8163d1e14 (svn r2674) - CodeChange: [pbs] Generalise the PSBISPbsDepot function so it can check if an arbitrary junction is a pbs junction. Preparations for making pbs more safe.
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	DiagDirection direction = TrackdirToExitdir(trackdir);//GetDepotDirection(tile,TRANSPORT_RAIL);
2008
c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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	int i;
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c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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	ssd.cur = 0;
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c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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	FollowTrack(tile, 0xC000 | TRANSPORT_RAIL, direction, (TPFEnumProc*)SetSignalsEnumProcPBS, NULL, &ssd);
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	for(i=0; i!=ssd.cur; i++) {
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		uint tile = ssd.tile[i];
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		byte bit = ssd.bit[i];
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   288
		if (!PBSIsPbsSignal(tile, bit) && !PBSIsPbsSignal(tile, bit | 8))
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			return false;
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		result = true;
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	}
2008
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c9d6585c96c8 (svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
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	return result;
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}