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Location: cpp/openttd-patchpack/source/direction.h
r4120:a593e0a0559d
2.5 KiB
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(svn r5464) [Behaviour Fix] : When starting the game, the system will now verify the presence of music files in gm forlder.
A song can now be removed from the programmed list (in custom list 1 and 2) by clicking on it.
Added music.c[ch] files, to make it all a bit cleaner.
Now, the name of the gm file is associated with the title of the song.
A song can now be removed from the programmed list (in custom list 1 and 2) by clicking on it.
Added music.c[ch] files, to make it all a bit cleaner.
Now, the name of the gm file is associated with the title of the song.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 | /* $Id$ */
#ifndef DIRECTION_H
#define DIRECTION_H
/* Direction as commonly used in v->direction, 8 way. */
typedef enum Direction {
DIR_N = 0,
DIR_NE = 1, /* Northeast, upper right on your monitor */
DIR_E = 2,
DIR_SE = 3,
DIR_S = 4,
DIR_SW = 5,
DIR_W = 6,
DIR_NW = 7,
DIR_END,
INVALID_DIR = 0xFF,
} Direction;
static inline Direction ReverseDir(Direction d)
{
return (Direction)(4 ^ d);
}
typedef enum DirDiff {
DIRDIFF_SAME = 0,
DIRDIFF_45RIGHT = 1,
DIRDIFF_90RIGHT = 2,
DIRDIFF_REVERSE = 4,
DIRDIFF_90LEFT = 6,
DIRDIFF_45LEFT = 7
} DirDiff;
static inline DirDiff DirDifference(Direction d0, Direction d1)
{
return (DirDiff)((d0 + 8 - d1) % 8);
}
static inline DirDiff ChangeDirDiff(DirDiff d, DirDiff delta)
{
return (DirDiff)((d + delta) % 8);
}
static inline Direction ChangeDir(Direction d, DirDiff delta)
{
return (Direction)((d + delta) % 8);
}
/* Direction commonly used as the direction of entering and leaving tiles, 4-way */
typedef enum DiagDirection {
DIAGDIR_NE = 0, /* Northeast, upper right on your monitor */
DIAGDIR_SE = 1,
DIAGDIR_SW = 2,
DIAGDIR_NW = 3,
DIAGDIR_END,
INVALID_DIAGDIR = 0xFF,
} DiagDirection;
static inline DiagDirection ReverseDiagDir(DiagDirection d)
{
return (DiagDirection)(2 ^ d);
}
typedef enum DiagDirDiff {
DIAGDIRDIFF_SAME = 0,
DIAGDIRDIFF_90RIGHT = 1,
DIAGDIRDIFF_REVERSE = 2,
DIAGDIRDIFF_90LEFT = 3
} DiagDirDiff;
static inline DiagDirection ChangeDiagDir(DiagDirection d, DiagDirDiff delta)
{
return (DiagDirection)((d + delta) % 4);
}
static inline DiagDirection DirToDiagDir(Direction dir)
{
return (DiagDirection)(dir >> 1);
}
static inline Direction DiagDirToDir(DiagDirection dir)
{
return (Direction)(dir * 2 + 1);
}
/* the 2 axis */
typedef enum Axis {
AXIS_X = 0,
AXIS_Y = 1,
AXIS_END
} Axis;
static inline Axis DiagDirToAxis(DiagDirection d)
{
return (Axis)(d & 1);
}
/*
* Converts an Axis to a DiagDirection
* Points always in the positive direction, i.e. S[EW]
*/
static inline DiagDirection AxisToDiagDir(Axis a)
{
return (DiagDirection)(2 - a);
}
/**
* Convert an axis and a flag for north/south into a DiagDirection
* @param ns north -> 0, south -> 1
*/
static inline DiagDirection XYNSToDiagDir(Axis xy, uint ns)
{
return (DiagDirection)(xy * 3 ^ ns * 2);
}
static inline bool IsValidDiagDirection(DiagDirection d)
{
return d < DIAGDIR_END;
}
static inline bool IsValidDirection(Direction d)
{
return d < DIR_END;
}
static inline bool IsValidAxis(Axis d)
{
return d < AXIS_END;
}
#endif
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