siflib/sectSprites.h

   1
   2 #ifndef _SECT_SPRITES_H
   3 #define _SECT_SPRITES_H
   4
   5 // this decodes and encodes the main sprites[] array of SIFSprite structures.
   6
   7 class DBuffer;
   8 #include "sif.h"
   9
  10
  11 class SIFSpritesSect
  12 {
  13 public:
  14         // get how many sprites are in the file. You can call this first if you need
  15         // to know how big to make the array.
  16         static int GetSpriteCount(const uint8_t *data, int datalen);
  17
  18         // decode from a SIF_SECTION_SPRITES and use the resultant data to fill in
  19         // an array of SIFSprite structures pointed to by sprites.
  20         static bool Decode(const uint8_t *data, int datalen, \
  21                                         SIFSprite *sprites, int *nsprites_out, int maxsprites);
  22
  23         // read sprites out of the given array of SIFSprite structures and generate
  24         // a SIF_SECTION_SPRITES record.
  25         static uint8_t *Encode(SIFSprite *sprites, int nsprites, int *datalen_out);
  26
  27
  28 private:
  29         static void LoadRect(SIFRect *rect, const uint8_t **data, const uint8_t *data_end);
  30         static void LoadPoint(SIFPoint *pt, const uint8_t **data, const uint8_t *data_end);
  31         static void LoadPointList(SIFPointList *lst, const uint8_t **data, const uint8_t *data_end);
  32         static bool LoadFrame(SIFFrame *frame, int ndirs, const uint8_t **data, const uint8_t *data_end);
  33
  34         static void SaveRect(SIFRect *rect, DBuffer *out);
  35         static void SavePoint(SIFPoint *pt, DBuffer *out);
  36         static void SavePointList(SIFPointList *lst, DBuffer *out);
  37         static void SaveOptionalPoint(int type, SIFPoint *pt, DBuffer *out);
  38         static void SaveOptionalRect(int type, SIFRect *rect, DBuffer *out);
  39         static void SaveFrame(SIFFrame *frame, int ndirs, DBuffer *out);
  40
  41 };
  42
  43
  44 // field types within SIFDir which are optional
  45 enum
  46 {
  47         S_DIR_END,                                                      // ends section list
  48
  49         S_DIR_DRAW_POINT,                                       // default is [0,0]
  50         S_DIR_ACTION_POINT,                                     // default is [0,0]
  51         S_DIR_ACTION_POINT_2,                           // default is [0,0]
  52         S_DIR_PF_BBOX                                           // default is no per-frame bbox, or rather [0,0]-[0,0]
  53 };
  54
  55 #endif