src/map.h

   1 #pragma once
   2
   3 #include <genesis.h>
   4 #include "thing.h"
   5 #include "switch.h"
   6 #include "player.h"
   7
   8 #define MAPW 100
   9 #define MAPH 100
  10 #define MAPPIXW 800
  11 #define MAPPIXH 800
  12
  13 #define SCREENW 40
  14 #define SCREENH 28
  15 #define SCREENPIXW 320
  16 #define SCREENPIXH 224
  17
  18 #define VIEWW SCREENW
  19 #define VIEWPIXW SCREENPIXW
  20 #define VIEWH ((SCREENH >> 1) - 2)
  21 #define VIEWPIXH ((SCREENPIXH >> 1) - 16)
  22
  23 #define VDPW 64
  24 #define VDPH 32
  25 #define VDPHH (VDPH >> 1)
  26
  27 enum tiletype {
  28   MAP_NONE = 0,
  29   MAP_WALL = 1,
  30   MAP_DOOR = 2,
  31   MAP_OPENDOOR = 3,
  32   MAP_STEP = 4,
  33   MAP_WATER = 5,
  34   MAP_ACID1 = 6,
  35   MAP_ACID2 = 7,
  36   MAP_FORCECLEAR = 128,
  37 };
  38
  39 typedef struct {
  40   u8 tilemap;
  41   u16 numsw;
  42   u16 numth;
  43   u8 *map;
  44   u8 *swmap;
  45   u16 *tiles;
  46   switch_t *sw;
  47   mapthing_t *th;
  48 } map_t;
  49
  50 typedef struct {
  51   u8  planeidx; // BG_A or BG_B
  52   u16 plane;    // VDP_BG_A or VDP_BG_B
  53   u16 sy, sh;   // screen offset and height in pixels
  54   u16 sty, sth; // screen offset and height in tiles
  55   s16 x, y;     // position in the world in pixels
  56   u16 tx, ty;   // position in the world in tiles
  57   u16 flags;    // set to 1 to reupload the entire screen, eg after teleports
  58 } cam_t;
  59
  60 extern u8 g_cells[MAPH*MAPW];
  61 extern map_t *g_map;
  62 extern cam_t g_cam[MAX_PLAYERS];
  63
  64 extern const u16 tile_rowoff[MAPW];
  65
  66 void map_startup(void);
  67 void map_load(map_t *map);
  68 void map_update(void);
  69
  70 void map_clear_tile(u16 tx, u16 ty);
  71 void map_set_tile(u16 tx, u16 ty, u16 tile);
  72 void map_clear_tile_rect(s16 tx, s16 ty, s16 w, s16 h);
  73 void map_set_tile_rect(s16 tx, s16 ty, s16 w, s16 h, u16 tile);
  74
  75 #define MAP_WALLPTR(m) (u8*)(m)
  76 #define MAP_SWMAPPTR(m) (u8*)(m + MAPH*MAPW)
  77 #define MAP_TILEPTR(m) (u16*)(m + 2*MAPH*MAPW)
  78 #define MAP_SWITCHPTR(m) (switch_t*)(m + 4*MAPH*MAPW)
  79 #define MAP_THINGPTR(m, n) (mapthing_t*)(m + 4*MAPH*MAPW + sizeof(switch_t)*n)
  80
  81 #define DEFINE_MAP(tset, nsw, nth, ptr) \
  82   { tset, nsw, nth, MAP_WALLPTR(ptr), MAP_SWMAPPTR(ptr), MAP_TILEPTR(ptr), MAP_SWITCHPTR(ptr), MAP_THINGPTR(ptr, nsw) }