sprite.h

#ifndef __sprite_h
#define __sprite_h
 
typedef enum
{
  sprite_nopalette  = 0,
  sprite_haspalette = 1
} sprite_palflag;
 
typedef struct
{
  int xmag,ymag,xdiv,ydiv;
} sprite_factors;
 
typedef char sprite_pixtrans;
 

 
typedef struct /* Format of a sprite area control block */
{
  int size;
  int number;
  int sproff;
  int freeoff;
} sprite_area;
 
typedef struct /* Format of a sprite header */
{
  int  next;      /*  Offset to next sprite                */
  char name[12];  /*  Sprite name                          */
  int  width;     /*  Width in words-1      (0..639)       */
  int  height;    /*  Height in scanlines-1 (0..255/511)   */
  int  lbit;      /*  First bit used (left end of row)     */
  int  rbit;      /*  Last bit used (right end of row)     */
  int  image;     /*  Offset to sprite image               */
  int  mask;      /*  Offset to transparency mask          */
  int  mode;      /*  Mode sprite was defined in           */
                  /*  Palette data optionally follows here */
                  /*  in memory                            */
} sprite_header;
 
#define sprite_mainarea ((sprite_area *) 0)
 
typedef void * sprite_ptr;
 

 
typedef enum
{
  sprite_id_name = 0,
  sprite_id_addr = 0x74527053 /* 'Magic' number ("SpRt") to test against */
} sprite_type;
 
typedef struct
{
  union
  {
    char *     name; /* Can use either name of sprite or address (faster) */
    sprite_ptr addr;
  } s;
  sprite_type tag;   /* User must tag the use of this structure manually */
} sprite_id;
 
typedef struct
{
 int width;
 int height;
 int mask;
 int mode;
} sprite_info;
 
typedef struct
{
  int colour;
  int tint;
} sprite_colour;
 
typedef enum
{
  sprite_masktransparent = 0,
  sprite_masksolid       = 1
} sprite_maskstate;
 
typedef struct
        { int r[4];
        } sprite_state;
 
/* Typedefs and functions for rotating sprites. */
 
typedef struct {int p0 [2], p1 [2], p2 [2], p3 [2];} sprite_pgm;
typedef int sprite_transmat [6];
typedef struct {int x0, y0, x1, y1;} sprite_box;
 
#endif
 
/* end of sprite.h */