tile.hpp as of 2024-04-12

#ifndef _TILE_HPP
#define _TILE_HPP

#include <globals.hpp>





struct Tile {
  kit::u16        id : 7;

  kit::u16   tileset : 1; //whether to use tileset a or b

  kit::u16 collide_a : 1; //'collide with top-left 12x12 section of tile?'
  kit::u16 collide_b : 1; //'collide with top-right 12x12 section of tile?'
  kit::u16 collide_c : 1; //'collide with bottom-left 12x12 section of tile?'
  kit::u16 collide_d : 1; //'collide with bottom-right 12x12 section of tile?'

  kit::u16      pass : 1; //allow passing through tile
  kit::u16  platform : 1; //allow falling through top side of tile conditionally

  kit::u16   _unused : 2;
};





struct Object;

typedef void (*Object_TickCallback)(Object* obj_a);

struct Object {
  kit::u32 type;
  kit::u32    _;
  Object_TickCallback funcUpdate;
};





//uncompressed scene data
struct Scene { //64B
  //pat is memory::alloc'd, bmp is not
  kit::Bitmap* bmp_bg = nullptr; //bitmap for background layer
  Tile*        pat_mg = nullptr; //pattern for midground (collision) layer
  Tile*        pat_fg = nullptr; //pattern for foreground layer (skipped if nullptr)
  //(length of pat_<mg/fg> is [TILESIZ_X*TILESIZ_Y])

  //these two are memory::alloc'd too
  Object*  objs          = nullptr; //pointer to associated object array,
  Object*  objs_original = nullptr;  //and whatever its original state was
  kit::u16 objs_len      = 0;

  kit::u16 edge_n; //scene id for north edge
  kit::u16 edge_s; //scene id for south edge
  kit::u16 edge_w; //scene id for west edge
  kit::u16 edge_e; //scene id for east edge

  kit::u16     music; //music id;  0 for no change, -1 (65535) to stop
  kit::u16 ambient_a; //ambient track id a;  0 for no change, -1 to stop
  kit::u16 ambient_b; //ambient track id b;  0 for no change, -1 to stop

  kit::u16  tileset_a; //1st associated tileset
  kit::u16  tileset_b; //2nd associated tileset
  bool visited_before; //used to reset object and npc properties between deaths
  bool     stretch_bg; //'stretch the bg over the entire screen?' (repeats otherwise)

  kit::u8 _padding8[2];


  void drawBg();
};





#endif /* _TILE_HPP */