(svn r7687) [cbh] - Fix: trains can now enter the bridge from side. They still can't leave it from side (pathfinder will need to be invoked when the other ramp is entered). Also the code is not very clear and needs review. It is more proof of concept than final solution. I hope that somebody smarter (Celestar) can do it better.
/* $Id$ */
#ifndef TREE_MAP_H
#define TREE_MAP_H
#include "macros.h"
typedef enum TreeType {
TREE_INVALID = -1,
TREE_TEMPERATE = 0,
TREE_SUB_ARCTIC = 12,
TREE_RAINFOREST = 20,
TREE_CACTUS = 27,
TREE_SUB_TROPICAL = 28,
TREE_TOYLAND = 32
} TreeType;
enum {
TREE_COUNT_TEMPERATE = TREE_SUB_ARCTIC - TREE_TEMPERATE,
TREE_COUNT_SUB_ARCTIC = TREE_RAINFOREST - TREE_SUB_ARCTIC,
TREE_COUNT_RAINFOREST = TREE_CACTUS - TREE_RAINFOREST,
TREE_COUNT_SUB_TROPICAL = TREE_SUB_TROPICAL - TREE_CACTUS,
TREE_COUNT_TOYLAND = 9
};
/* ground type, m2 bits 4...5
* valid densities (bits 6...7) in comments after the enum */
typedef enum TreeGround {
TREE_GROUND_GRASS = 0, // 0
TREE_GROUND_ROUGH = 1, // 0
TREE_GROUND_SNOW_DESERT = 2 // 0-3 for snow, 3 for desert
} TreeGround;
static inline TreeType GetTreeType(TileIndex t)
{
assert(IsTileType(t, MP_TREES));
return _m[t].m3;
}
static inline TreeGround GetTreeGround(TileIndex t)
{
assert(IsTileType(t, MP_TREES));
return GB(_m[t].m2, 4, 2);
}
static inline uint GetTreeDensity(TileIndex t)
{
assert(IsTileType(t, MP_TREES));
return GB(_m[t].m2, 6, 2);
}
static inline void SetTreeGroundDensity(TileIndex t, TreeGround g, uint d)
{
assert(IsTileType(t, MP_TREES)); // XXX incomplete
SB(_m[t].m2, 4, 2, g);
SB(_m[t].m2, 6, 2, d);
}
static inline uint GetTreeCount(TileIndex t)
{
assert(IsTileType(t, MP_TREES));
return GB(_m[t].m5, 6, 2);
}
static inline void AddTreeCount(TileIndex t, int c)
{
assert(IsTileType(t, MP_TREES)); // XXX incomplete
_m[t].m5 += c << 6;
}
static inline void SetTreeCount(TileIndex t, uint c)
{
assert(IsTileType(t, MP_TREES)); // XXX incomplete
SB(_m[t].m5, 6, 2, c);
}
static inline uint GetTreeGrowth(TileIndex t)
{
assert(IsTileType(t, MP_TREES));
return GB(_m[t].m5, 0, 3);
}
static inline void AddTreeGrowth(TileIndex t, int a)
{
assert(IsTileType(t, MP_TREES)); // XXX incomplete
_m[t].m5 += a;
}
static inline void SetTreeGrowth(TileIndex t, uint g)
{
assert(IsTileType(t, MP_TREES)); // XXX incomplete
SB(_m[t].m5, 0, 3, g);
}
static inline uint GetTreeCounter(TileIndex t)
{
assert(IsTileType(t, MP_TREES));
return GB(_m[t].m2, 0, 4);
}
static inline void AddTreeCounter(TileIndex t, int a)
{
assert(IsTileType(t, MP_TREES)); // XXX incomplete
_m[t].m2 += a;
}
static inline void SetTreeCounter(TileIndex t, uint c)
{
assert(IsTileType(t, MP_TREES)); // XXX incomplete
SB(_m[t].m2, 0, 4, c);
}
static inline void MakeTree(TileIndex t, TreeType type, uint count, uint growth, TreeGround ground, uint density)
{
SetTileType(t, MP_TREES);
SetTileOwner(t, OWNER_NONE);
_m[t].m2 = density << 6 | ground << 4 | 0;
_m[t].m3 = type;
_m[t].m4 = 0 << 5 | 0 << 2;
_m[t].m5 = count << 6 | growth;
}
#endif /* TREE_MAP_H */