4 // ============================================================================
5 // external functions and definitions imported from main program to game_em
6 // ============================================================================
8 #include "../engines.h"
11 // ============================================================================
12 // functions and definitions that are exported from game_em to main program
13 // ============================================================================
18 // ============================================================================
19 // internal functions and definitions that are not exported to main program
20 // ============================================================================
25 // ----------------------------------------------------------------------------
26 // constant definitions
27 // ----------------------------------------------------------------------------
29 /* values for native Emerald Mine game version */
30 #define FILE_VERSION_EM_UNKNOWN 0
31 #define FILE_VERSION_EM_V1 1
32 #define FILE_VERSION_EM_V2 2
33 #define FILE_VERSION_EM_V3 3
34 #define FILE_VERSION_EM_V4 4 /* (there really was no version 4) */
35 #define FILE_VERSION_EM_V5 5
36 #define FILE_VERSION_EM_V6 6
38 #define FILE_VERSION_EM_ACTUAL FILE_VERSION_EM_V6
40 /* level sizes and positions for EM engine */
42 #define WIDTH EM_MAX_CAVE_WIDTH
43 #define HEIGHT EM_MAX_CAVE_HEIGHT
45 /* screen sizes and positions for EM engine */
49 extern int TILESIZE_VAR;
51 #define TILEX TILESIZE_VAR
52 #define TILEY TILESIZE_VAR
54 extern int SCR_FIELDX, SCR_FIELDY;
56 #define MAX_BUF_XSIZE (SCR_FIELDX + 2)
57 #define MAX_BUF_YSIZE (SCR_FIELDY + 2)
59 /* often used screen positions */
63 #define SXSIZE (SCR_FIELDX * TILEX)
64 #define SYSIZE (SCR_FIELDY * TILEY)
67 #define PLAY_ELEMENT_SOUND FALSE
70 // ----------------------------------------------------------------------------
71 // macro function definitions
72 // ----------------------------------------------------------------------------
74 #define ROUNDED_DIVIDE(x, y) (((x) + (y) - 1) / (y))
76 #define SECONDS_TO_FRAMES(x) ((x) * FRAMES_PER_SECOND)
77 #define FRAMES_TO_SECONDS(x) ((x) / FRAMES_PER_SECOND)
79 #define SECONDS_TO_CYCLES(x) ROUNDED_DIVIDE((x) * FRAMES_PER_SECOND, 8)
80 #define CYCLES_TO_SECONDS(x) ROUNDED_DIVIDE((x) * 8, FRAMES_PER_SECOND)
82 #define DISPLAY_TIME(x) ROUNDED_DIVIDE(x, FRAMES_PER_SECOND)
85 // ----------------------------------------------------------------------------
86 // data structure definitions
87 // ----------------------------------------------------------------------------
89 // ----------------------------------------------------------------------------
91 // ----------------------------------------------------------------------------
93 extern unsigned int RandomEM;
95 extern struct LEVEL lev;
96 extern struct PLAYER ply[MAX_PLAYERS];
98 extern struct LevelInfo_EM native_em_level;
99 extern struct GraphicInfo_EM graphic_info_em_object[TILE_MAX][8];
100 extern struct GraphicInfo_EM graphic_info_em_player[MAX_PLAYERS][PLY_MAX][8];
107 extern struct GameInfo_EM game_em;
109 extern unsigned char tab_blank[TILE_MAX];
110 extern unsigned char tab_acid[TILE_MAX];
111 extern unsigned char tab_amoeba[TILE_MAX];
112 extern unsigned char tab_android_move[TILE_MAX];
113 extern unsigned short tab_explode_normal[TILE_MAX];
114 extern unsigned short tab_explode_dynamite[TILE_MAX];
116 extern unsigned short map_obj[8][TILE_MAX];
117 extern unsigned short map_ply[2][8][PLY_MAX];
118 extern unsigned short map_ttl[128];
120 extern Bitmap *screenBitmap;
121 extern Bitmap *scoreBitmap;
123 extern Bitmap *objBitmap;
124 extern Bitmap *sprBitmap;
125 extern Bitmap *ttlBitmap;
126 extern Bitmap *botBitmap;
129 // ----------------------------------------------------------------------------
130 // exported functions
131 // ----------------------------------------------------------------------------