badge/jumpnrun/tiles.h

   1 #ifndef INCLUDED_JUMPNRUN_TILES_H
   2 #define INCLUDED_JUMPNRUN_TILES_H
   3
   4 #include "../util/fixed_point.h"
   5 #include "../util/rectangle.h"
   6 #include "../ui/sprite.h"
   7
   8 #include <stdint.h>
   9
  10 enum {
  11   JUMPNRUN_COLLISION_TOP    = 1,
  12   JUMPNRUN_COLLISION_BOTTOM = 2,
  13   JUMPNRUN_COLLISION_LEFT   = 4,
  14   JUMPNRUN_COLLISION_RIGHT  = 8
  15 };
  16
  17 enum {
  18   JUMPNRUN_TILE_PIXEL_WIDTH  = 5,
  19   JUMPNRUN_TILE_PIXEL_HEIGHT = 5
  20 };
  21
  22 typedef struct jumpnrun_tile_position {
  23   int16_t x;
  24   int8_t  y;
  25 } __attribute__((packed)) 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 } __attribute__((packed)) jumpnrun_tile;
  36
  37 typedef struct jumpnrun_tile_range {
  38   uint16_t first;
  39   uint16_t last; // actually one past last.
  40 } jumpnrun_tile_range;
  41
  42 static inline fixed_point tile_left  (jumpnrun_tile const *tile) { return FIXED_INT(tile->pos.x * JUMPNRUN_TILE_PIXEL_WIDTH ); }
  43 static inline fixed_point tile_top   (jumpnrun_tile const *tile) { return FIXED_INT(tile->pos.y * JUMPNRUN_TILE_PIXEL_HEIGHT); }
  44 static inline fixed_point tile_right (jumpnrun_tile const *tile) { return fixed_point_add(tile_left(tile), FIXED_INT(JUMPNRUN_TILE_PIXEL_WIDTH )); }
  45 static inline fixed_point tile_bottom(jumpnrun_tile const *tile) { return fixed_point_add(tile_top (tile), FIXED_INT(JUMPNRUN_TILE_PIXEL_HEIGHT)); }
  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   JUMPNRUN_TILE_TYPE_SPIKE_UP,
  57   JUMPNRUN_TILE_TYPE_SPIKE_RIGHT,
  58   JUMPNRUN_TILE_TYPE_SPIKE_DOWN,
  59   JUMPNRUN_TILE_TYPE_SPIKE_LEFT,
  60
  61   JUMPNRUN_TILE_TYPE_COUNT
  62 };
  63
  64 extern jumpnrun_tile_type const jumpnrun_tile_type_data[JUMPNRUN_TILE_TYPE_COUNT];
  65
  66 static inline jumpnrun_tile_type const *tile_type(jumpnrun_tile const *tile) {
  67   return &jumpnrun_tile_type_data[tile->type];
  68 }
  69
  70 static inline rectangle rect_from_tile(jumpnrun_tile const *tile) {
  71   rectangle r = {
  72     {
  73       tile_left(tile),
  74       tile_top(tile)
  75     }, {
  76       FIXED_POINT(tile_type(tile)->sprite.width , 0),
  77       FIXED_POINT(tile_type(tile)->sprite.height, 0)
  78     }
  79   };
  80   return r;
  81 }
  82
  83 #endif