badge/jumpnrun/tiles.h

   1 #ifndef INCLUDED_JUMPNRUN_TILES_H
   2 #define INCLUDED_JUMPNRUN_TILES_H
   3
   4 #include <badge/util/fixed_point.h>
   5 #include <badge/util/rectangle.h>
   6 #include <badge/ui/sprite.h>
   7
   8 #include <stdint.h>
   9
  10 typedef enum {
  11   JUMPNRUN_TILE_TOP    = 1,
  12   JUMPNRUN_TILE_BOTTOM = 2,
  13   JUMPNRUN_TILE_LEFT   = 4,
  14   JUMPNRUN_TILE_RIGHT  = 8
  15 } jumpnrun_tile_sides;
  16
  17 enum {
  18   JUMPNRUN_TILE_PIXEL_WIDTH  = 5,
  19   JUMPNRUN_TILE_PIXEL_HEIGHT = 5
  20 };
  21
  22 typedef struct jumpnrun_tile_position {
  23   uint16_t x;
  24   uint8_t  y;
  25 } jumpnrun_tile_position;
  26
  27 typedef struct jumpnrun_tile_type {
  28   uint8_t      lethal_sides;
  29   badge_sprite sprite;
  30 } jumpnrun_tile_type;
  31
  32 typedef struct jumpnrun_tile {
  33   jumpnrun_tile_position pos;
  34   uint8_t                type;
  35 } jumpnrun_tile;
  36
  37 typedef struct jumpnrun_tile_range {
  38   size_t first;
  39   size_t last; // actually one past last.
  40 } jumpnrun_tile_range;
  41
  42 static inline fixed_point tile_left  (jumpnrun_tile const *tile) { return FIXED_POINT(tile->pos.x * JUMPNRUN_TILE_PIXEL_WIDTH , 0); }
  43 static inline fixed_point tile_top   (jumpnrun_tile const *tile) { return FIXED_POINT(tile->pos.y * JUMPNRUN_TILE_PIXEL_HEIGHT, 0); }
  44 static inline fixed_point tile_right (jumpnrun_tile const *tile) { return fixed_point_add(tile_left(tile), FIXED_POINT(JUMPNRUN_TILE_PIXEL_WIDTH , 0)); }
  45 static inline fixed_point tile_bottom(jumpnrun_tile const *tile) { return fixed_point_add(tile_top (tile), FIXED_POINT(JUMPNRUN_TILE_PIXEL_HEIGHT, 0)); }
  46
  47 /************************************/
  48
  49 enum {
  50   JUMPNRUN_TILE_TYPE_BRICK,
  51   JUMPNRUN_TILE_TYPE_SQUARE,
  52   JUMPNRUN_TILE_TYPE_TUBE_TOP_LEFT,
  53   JUMPNRUN_TILE_TYPE_TUBE_TOP_RIGHT,
  54   JUMPNRUN_TILE_TYPE_TUBE_LEFT,
  55   JUMPNRUN_TILE_TYPE_TUBE_RIGHT,
  56
  57   JUMPNRUN_TILE_TYPE_COUNT
  58 };
  59
  60 extern jumpnrun_tile_type const jumpnrun_tile_type_data[JUMPNRUN_TILE_TYPE_COUNT];
  61
  62 static inline jumpnrun_tile_type const *tile_type(jumpnrun_tile const *tile) {
  63   return &jumpnrun_tile_type_data[tile->type];
  64 }
  65
  66 static inline rectangle rect_from_tile(jumpnrun_tile const *tile) {
  67   rectangle r = {
  68     {
  69       tile_left(tile),
  70       tile_top(tile)
  71     }, {
  72       FIXED_POINT(tile_type(tile)->sprite.width , 0),
  73       FIXED_POINT(tile_type(tile)->sprite.height, 0)
  74     }
  75   };
  76   return r;
  77 }
  78
  79 #endif