3 * handle interaction between screen and cave
11 struct PLAYER ply[MAX_PLAYERS];
13 struct EngineSnapshotInfo_EM engine_snapshot_em;
15 /* handle input actions for players */
17 static void readjoy(byte action, struct PLAYER *ply)
19 int north = 0, east = 0, south = 0, west = 0;
20 int snap = 0, drop = 0;
22 if (game_em.use_single_button && action & (JOY_BUTTON_1 | JOY_BUTTON_2))
23 action |= JOY_BUTTON_1 | JOY_BUTTON_2;
25 if (action & JOY_LEFT)
28 if (action & JOY_RIGHT)
34 if (action & JOY_DOWN)
37 if (action & JOY_BUTTON_1)
40 if (action & JOY_BUTTON_2)
43 /* always update drop action */
46 if (ply->joy_stick || (north | east | south | west)) /* (no "| snap"!) */
53 /* when storing last action, only update snap action with direction */
54 /* (prevents clearing direction if snapping stopped before frame 7) */
58 /* if no direction was stored before, allow setting snap to current state */
65 /* use bug with snap key (mainly TAS keys) sometimes moving the player */
66 if (game_em.use_snap_key_bug)
70 void InitGameEngine_EM(void)
76 RedrawPlayfield_EM(FALSE);
79 void GameActions_EM(byte action[MAX_PLAYERS], boolean warp_mode)
82 boolean any_player_dropping = FALSE;
84 game_em.random = game_em.random * 129 + 1;
86 frame = (frame - 1) & 7;
88 for (i = 0; i < MAX_PLAYERS; i++)
89 readjoy(action[i], &ply[i]);
91 UpdateEngineValues(screen_x / TILEX, screen_y / TILEY, ply[0].x, ply[0].y);
104 for (i = 0; i < MAX_PLAYERS; i++)
105 if (ply[i].joy_drop &&
107 ply[i].dynamite_cnt > 0 &&
108 ply[i].dynamite_cnt < 5)
109 any_player_dropping = TRUE;
111 CheckSingleStepMode_EM(action, frame, game_em.any_player_moving,
112 game_em.any_player_snapping, any_player_dropping);
114 RedrawPlayfield_EM(FALSE);
117 void SaveEngineSnapshotValues_EM(void)
121 engine_snapshot_em.game_em = game_em;
122 engine_snapshot_em.lev = lev;
124 engine_snapshot_em.frame = frame;
125 engine_snapshot_em.screen_x = screen_x;
126 engine_snapshot_em.screen_y = screen_y;
128 for (i = 0; i < 4; i++)
129 engine_snapshot_em.ply[i] = ply[i];
132 void LoadEngineSnapshotValues_EM(void)
136 game_em = engine_snapshot_em.game_em;
137 lev = engine_snapshot_em.lev;
139 frame = engine_snapshot_em.frame;
140 screen_x = engine_snapshot_em.screen_x;
141 screen_y = engine_snapshot_em.screen_y;
143 for (i = 0; i < 4; i++)
144 ply[i] = engine_snapshot_em.ply[i];