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author | KUDr <kudr@openttd.org> | 2007-01-10 18:12:09 +0000 |
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committer | KUDr <kudr@openttd.org> | 2007-01-10 18:12:09 +0000 |
commit | e373ea7096c741a8189f7a480863fd21dd6f6be1 (patch) | |
tree | d9abc3d9810159441bed9f82a52bd1ee52d770dd /src/bridge_map.cpp | |
parent | 001d858b528d78743deaf7dcea46ea8f0736bad9 (diff) | |
download | openttd-e373ea7096c741a8189f7a480863fd21dd6f6be1.tar.xz |
(svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
Diffstat (limited to 'src/bridge_map.cpp')
-rw-r--r-- | src/bridge_map.cpp | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/src/bridge_map.cpp b/src/bridge_map.cpp new file mode 100644 index 000000000..8e2405ea3 --- /dev/null +++ b/src/bridge_map.cpp @@ -0,0 +1,51 @@ +/* $Id$ */ + +#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; + uint 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); +} |