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Location: cpp/openttd-patchpack/source/sprite.h
r425:0ab554aea090
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text/x-c
(svn r624) Merge r377 to trunk:
Remove the memmove special case for MSVC
According to the MSDN it was just plain wrong and memmove was directly used in some places anyway
Remove the memmove special case for MSVC
According to the MSDN it was just plain wrong and memmove was directly used in some places anyway
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 | #ifndef SPRITE_H
#define SPRITE_H
/* The following describes bunch of sprites to be drawn together in a single 3D
* bounding box. Used especially for various multi-sprite buildings (like
* depots or stations): */
typedef struct DrawTileSeqStruct {
int8 delta_x; // 0x80 is sequence terminator
int8 delta_y;
int8 delta_z;
byte width,height;
byte unk; // 'depth', just z-size; TODO: rename
uint32 image;
} DrawTileSeqStruct;
typedef struct DrawTileSprites {
SpriteID ground_sprite;
DrawTileSeqStruct const *seq;
} DrawTileSprites;
// Iterate through all DrawTileSeqStructs in DrawTileSprites.
#define foreach_draw_tile_seq(idx, list) for (idx = list; ((byte) idx->delta_x) != 0x80; idx++)
/* This is for custom sprites: */
struct SpriteGroup;
struct RealSpriteGroup {
// XXX: Would anyone ever need more than 16 spritesets? Maybe we should
// use even less, now we take whole 8kb for custom sprites table, oh my!
byte sprites_per_set; // means number of directions - 4 or 8
// Loaded = in motion, loading = not moving
// Each group contains several spritesets, for various loading stages
// XXX: For stations the meaning is different - loaded is for stations
// with small amount of cargo whilst loading is for stations with a lot
// of da stuff.
byte loaded_count;
uint16 loaded[16]; // sprite ids
byte loading_count;
uint16 loading[16]; // sprite ids
};
/* Shared by deterministic and random groups. */
enum VarSpriteGroupScope {
VSG_SCOPE_SELF,
// Engine of consists for vehicles, city for stations.
VSG_SCOPE_PARENT,
};
struct DeterministicSpriteGroupRanges;
struct DeterministicSpriteGroup {
// Take this variable:
enum VarSpriteGroupScope var_scope;
byte variable;
// Do this with it:
byte shift_num;
byte and_mask;
// Then do this with it:
enum DeterministicSpriteGroupOperation {
DSG_OP_NONE,
DSG_OP_DIV,
DSG_OP_MOD,
} operation;
byte add_val;
byte divmod_val;
// And apply it to this:
byte num_ranges;
struct DeterministicSpriteGroupRange *ranges; // Dynamically allocated
// Dynamically allocated, this is the sole owner
struct SpriteGroup *default_group;
};
struct SpriteGroup {
enum SpriteGroupType {
SGT_REAL,
SGT_DETERMINISTIC,
SGT_RANDOM, /* TODO */
} type;
union {
struct RealSpriteGroup real;
struct DeterministicSpriteGroup determ;
} g;
};
struct DeterministicSpriteGroupRange {
struct SpriteGroup group;
byte low;
byte high;
};
/* This is a temporary helper for SpriteGroup users not supporting variational
* sprite groups yet - it just traverses those cowardly, always taking the
* default choice until it hits a real sprite group, returning it. */
static struct RealSpriteGroup *TriviallyGetRSG(struct SpriteGroup *sg);
/* This takes value (probably of the variable specified in the group) and
* chooses corresponding SpriteGroup accordingly to the given
* DeterministicSpriteGroup. */
struct SpriteGroup *EvalDeterministicSpriteGroup(struct DeterministicSpriteGroup *dsg, int value);
/* Get value of a common deterministic SpriteGroup variable. */
int GetDeterministicSpriteValue(byte var);
/**** Inline functions ****/
static INLINE struct RealSpriteGroup *TriviallyGetRSG(struct SpriteGroup *sg)
{
if (sg->type == SGT_REAL)
return &sg->g.real;
return TriviallyGetRSG(sg->g.determ.default_group);
}
#endif
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