4 // ============================================================================
5 // functions and definitions exported from game_em to main program
6 // ============================================================================
12 // ----------------------------------------------------------------------------
13 // constant definitions
14 // ----------------------------------------------------------------------------
16 #define EM_MAX_CAVE_WIDTH CAVE_WIDTH
17 #define EM_MAX_CAVE_HEIGHT CAVE_HEIGHT
20 // ----------------------------------------------------------------------------
21 // exported structures
22 // ----------------------------------------------------------------------------
36 boolean any_player_moving;
37 boolean any_player_snapping;
39 int last_moving_player;
40 int last_player_direction[MAX_PLAYERS];
43 struct PLAYER *ply[MAX_PLAYERS];
45 // flags to handle bugs in and changes between different engine versions
46 boolean use_single_button;
47 boolean use_snap_key_bug;
48 boolean use_old_explosions;
62 int src_offset_x, src_offset_y;
63 int dst_offset_x, dst_offset_y;
66 Bitmap *crumbled_bitmap;
67 int crumbled_src_x, crumbled_src_y;
68 int crumbled_border_size;
69 int crumbled_tile_size;
71 boolean has_crumbled_graphics;
72 boolean preserve_background;
74 int unique_identifier; /* used to identify needed screen updates */
77 struct EngineSnapshotInfo_EM
79 struct GameInfo_EM game_em;
81 struct PLAYER ply[MAX_PLAYERS];
89 // ----------------------------------------------------------------------------
91 // ----------------------------------------------------------------------------
93 extern struct GlobalInfo_EM global_em_info;
94 extern struct GameInfo_EM game_em;
95 extern struct LevelInfo_EM native_em_level;
96 extern struct GraphicInfo_EM graphic_info_em_object[GAME_TILE_MAX][8];
97 extern struct GraphicInfo_EM graphic_info_em_player[MAX_PLAYERS][PLY_MAX][8];
98 extern struct EngineSnapshotInfo_EM engine_snapshot_em;
100 void em_open_all(void);
101 void em_close_all(void);
103 void InitGfxBuffers_EM(void);
105 void InitGameEngine_EM(void);
106 void GameActions_EM(byte *, boolean);
108 unsigned int InitEngineRandom_EM(int);
110 void setLevelInfoToDefaults_EM(void);
111 boolean LoadNativeLevel_EM(char *, boolean);
113 int getFieldbufferOffsetX_EM(void);
114 int getFieldbufferOffsetY_EM(void);
116 void BlitScreenToBitmap_EM(Bitmap *);
117 void RedrawPlayfield_EM(boolean);
119 void LoadEngineSnapshotValues_EM(void);
120 void SaveEngineSnapshotValues_EM(void);
122 boolean checkIfAllPlayersFitToScreen(void);
124 int map_em_element_C_to_X(int);
125 int map_em_element_X_to_C(int);