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Location: cpp/openttd-patchpack/source/src/slope.h - annotation
r6888:f2ab5d0e6596
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(svn r10131) -Fix [FS#810]: when removing a dock, a ship will always try to reach the old location of the dock even when it cannot anymore because it the old location of the dock is now land instead of water.
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/** @file slope.h */
#ifndef SLOPE_H
#define SLOPE_H
enum Slope {
SLOPE_FLAT = 0x00,
SLOPE_W = 0x01,
SLOPE_S = 0x02,
SLOPE_E = 0x04,
SLOPE_N = 0x08,
SLOPE_STEEP = 0x10,
SLOPE_NW = SLOPE_N | SLOPE_W,
SLOPE_SW = SLOPE_S | SLOPE_W,
SLOPE_SE = SLOPE_S | SLOPE_E,
SLOPE_NE = SLOPE_N | SLOPE_E,
SLOPE_EW = SLOPE_E | SLOPE_W,
SLOPE_NS = SLOPE_N | SLOPE_S,
SLOPE_ELEVATED = SLOPE_N | SLOPE_E | SLOPE_S | SLOPE_W,
SLOPE_NWS = SLOPE_N | SLOPE_W | SLOPE_S,
SLOPE_WSE = SLOPE_W | SLOPE_S | SLOPE_E,
SLOPE_SEN = SLOPE_S | SLOPE_E | SLOPE_N,
SLOPE_ENW = SLOPE_E | SLOPE_N | SLOPE_W,
SLOPE_STEEP_W = SLOPE_STEEP | SLOPE_NWS,
SLOPE_STEEP_S = SLOPE_STEEP | SLOPE_WSE,
SLOPE_STEEP_E = SLOPE_STEEP | SLOPE_SEN,
SLOPE_STEEP_N = SLOPE_STEEP | SLOPE_ENW
};
static inline bool IsSteepSlope(Slope s)
{
return (s & SLOPE_STEEP) != 0;
}
static inline Slope ComplementSlope(Slope s)
{
assert(!IsSteepSlope(s));
return (Slope)(0xF ^ s);
}
#endif /* SLOPE_H */
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