src/emulation/sky/tile.hpp

   1 #ifndef _skycore__tile__hpp__included__
   2 #define _skycore__tile__hpp__included__
   3
   4 #include <cstdint>
   5
   6 namespace sky
   7 {
   8         struct tile
   9         {
  10                 static const unsigned sticky = 2;
  11                 static const unsigned slippery = 8;
  12                 static const unsigned suppiles = 9;
  13                 static const unsigned boost = 10;
  14                 static const unsigned burning = 12;
  15                 tile() { _tile = 0; }
  16                 tile(uint16_t xtile) { _tile = xtile; }
  17                 unsigned lower_floor() { return _tile & 0xF; }
  18                 unsigned upper_floor() { return (_tile & 0xF0) >> 4; }
  19                 bool is_tunnel() { return ((_tile & 0x100) != 0) && ((_tile & 0xE00) <= 0x400); }
  20                 int apparent_height() throw();
  21                 bool has_lower_floor() throw() { return ((_tile & 0xF) != 0); }
  22                 bool is_colliding_floor(int16_t hchunk, int16_t vpos);
  23                 bool is_colliding(int16_t hchunk, int16_t vpos);
  24                 int16_t upper_level();
  25                 unsigned surface_type(int16_t vpos);
  26                 bool is_dangerous();
  27                 bool is_block() { return ((_tile & 0xF00) != 0); }
  28                 bool is_rblock() { return ((_tile & 0xE00) != 0); }
  29                 bool is_blank() { return (_tile == 0); /* Not masked! */ }
  30                 bool in_pipe(uint16_t hchunk, int16_t vpos);
  31                 uint16_t rawtile() { return _tile; }
  32         private:
  33                 uint16_t _tile;
  34         };
  35 }
  36 #endif