src/lib/16_sprite.c

   1 #include "src/lib/16_sprite.h"
   2
   3 char* get_curr_anim_name(struct sprite *spri)
   4 {
   5         // Retrive animation name list
   6         struct vrs_header huge *vrs = spri->spritesheet->vrs_hdr;
   7         uint32_t huge *anim_names_offsets =     (uint32_t huge *)
   8                                                 ((byte huge *)vrs +
   9                                                  vrs->offset_table[VRS_HEADER_OFFSET_ANIMATION_NAME_LIST]);
  10
  11         return (char *)(vrs + anim_names_offsets[spri->curr_anim_spri]);
  12 }
  13
  14 void init_anim(struct sprite *spri, int anim_index)
  15 {
  16         struct vrs_header huge *vrs = spri->spritesheet->vrs_hdr;
  17         uint32_t huge *anim_lists_offsets =     (uint32_t huge *)
  18                                                 ((byte huge *)vrs +
  19                                                  vrs->offset_table[VRS_HEADER_OFFSET_ANIMATION_LIST]);
  20         struct vrs_animation_list_entry_t *anim_list =  (struct vrs_animation_list_entry_t huge *)
  21                                                         ((byte huge *)vrs +
  22                                                          anim_lists_offsets[anim_index]);
  23
  24         // Upon new animation, start from the first sprite in it
  25         spri->curr_anim_spri = 0;
  26         spri->curr_spri_id = anim_list[0].sprite_id;
  27         spri->delay = anim_list[0].delay;
  28
  29         spri->curr_anim_list = anim_list;
  30 }
  31
  32
  33 int set_anim_by_id(struct sprite *spri, int anim_id)
  34 {
  35         int new_anim_index = 0;
  36         int iter_id;
  37         struct vrs_header huge *vrs = spri->spritesheet->vrs_hdr;
  38         // Retruve animation ids list
  39         uint16_t huge *anim_ids =       (uint16_t huge *)
  40                                         ((byte huge *)vrs +
  41                                          vrs->offset_table[VRS_HEADER_OFFSET_ANIMATION_ID_LIST]);
  42
  43         // Loop through animation id untill match or end of list
  44         while(iter_id = anim_ids[new_anim_index])
  45         {
  46                 // Return on successful match
  47                 if (iter_id = anim_id)
  48                 {
  49                         init_anim(spri, new_anim_index);
  50                         return 0;
  51                 }
  52                 new_anim_index++;
  53         }
  54         return -1;
  55 }
  56
  57 void print_anim_ids(struct sprite *spri)
  58 {
  59         int new_anim_index = 0;
  60         int iter_id;
  61         struct vrs_header huge *vrs = spri->spritesheet->vrs_hdr;
  62         // Retruve animation ids list
  63         uint16_t huge *anim_ids =       (uint16_t huge *)
  64                                         ((byte huge *)vrs +
  65                                          vrs->offset_table[VRS_HEADER_OFFSET_ANIMATION_ID_LIST]);
  66
  67         printf("\nPos %lld off %lld\n", (uint32_t)vrs, vrs->offset_table[VRS_HEADER_OFFSET_ANIMATION_ID_LIST]);
  68         if(!anim_ids[new_anim_index])
  69                 exit(3);
  70         // Loop through animation id untill match or end of list
  71         while(iter_id = anim_ids[new_anim_index])
  72         {
  73                 // Return on successful match
  74                 new_anim_index++;
  75                 printf("%d, ", iter_id);
  76         }
  77 }
  78
  79
  80 void animate_spri(struct sprite *spri)
  81 {
  82         struct vrl_container *vrl_cont;
  83         // Events go here
  84
  85         // Draw sprite
  86         vrl_cont = get_vrl_by_id(spri->spritesheet, spri->curr_spri_id);
  87         draw_vrl1_vgax_modex(   spri->x, spri->y,
  88                                 vrl_cont->vrl_header, vrl_cont->line_offsets,
  89                                 vrl_cont->buffer + sizeof(struct vrl1_vgax_header),
  90                                 vrl_cont->size - sizeof(struct vrl1_vgax_header));
  91
  92         // Depending on delay, update indices
  93         switch(spri->delay){
  94                 // Delay = 0 means that sprite should loop. Nothing to change here
  95                 case 0:
  96                         break;
  97
  98                 // Delay = 1 means that on next time unit sprite should be changed
  99                 case 1:
 100                         spri->curr_anim_spri++;
 101
 102                         // If we hit the end of an animation sequence, restart it
 103                         if(!(spri->curr_spri_id = spri->curr_anim_list[spri->curr_anim_spri].sprite_id)){
 104                                 spri->curr_anim_spri = 0;
 105                                 spri->curr_spri_id = spri->curr_anim_list[spri->curr_anim_spri].sprite_id;
 106                         }
 107                         spri->delay = spri->curr_anim_list[spri->curr_anim_spri].delay;
 108
 109                 // Delay > 1 means that we should not change sprite yet. Decrease delay
 110                 default:
 111                         spri->delay--;
 112                         break;
 113         }
 114 }