X-Git-Url: https://git.artsoft.org/?p=rocksndiamonds.git;a=blobdiff_plain;f=src%2Fgame.c;h=ee52b55f5eb6f4b7395fa2724b2e022809d95484;hp=e7a139f45989aeef4e7baf5c25bea8c190fe5baf;hb=0e5aef968a447e03002cbcc120df7555df624b85;hpb=05957f807db2ca72144aff82c8240357e47420a5

diff --git a/src/game.c b/src/game.c
index e7a139f4..ee52b55f 100644
--- a/src/game.c
+++ b/src/game.c
@@ -3035,7 +3035,15 @@ static void InitGameEngine()
   game.scroll_delay_value =
     MIN(MAX(MIN_SCROLL_DELAY, game.scroll_delay_value), MAX_SCROLL_DELAY);
 
-  FreeEngineSnapshotList();
+  /* ---------- initialize game engine snapshots ---------------------------- */
+  for (i = 0; i < MAX_PLAYERS; i++)
+    game.snapshot.last_action[i] = 0;
+  game.snapshot.changed_action = FALSE;
+  game.snapshot.mode =
+    (strEqual(setup.engine_snapshot_mode, STR_SNAPSHOT_MODE_EVERY_STEP) ?
+     SNAPSHOT_MODE_EVERY_STEP :
+     strEqual(setup.engine_snapshot_mode, STR_SNAPSHOT_MODE_EVERY_MOVE) ?
+     SNAPSHOT_MODE_EVERY_MOVE : SNAPSHOT_MODE_OFF);
 }
 
 int get_num_special_action(int element, int action_first, int action_last)
@@ -3997,7 +4005,7 @@ void InitGame()
 
   game.restart_level = FALSE;
 
-  SaveEngineSnapshotToList();
+  SaveEngineSnapshotToListInitial();
 }
 
 void UpdateEngineValues(int actual_scroll_x, int actual_scroll_y)
@@ -10686,7 +10694,8 @@ static void CheckSaveEngineSnapshot(struct PlayerInfo *player)
       (player->is_snapping && !player_was_snapping) ||
       (player->is_dropping && !player_was_dropping))
   {
-    SaveEngineSnapshotToList();
+    if (!SaveEngineSnapshotToList())
+      return;
 
     player_was_moving = FALSE;
     player_was_snapping = TRUE;
@@ -10955,6 +10964,23 @@ void GameActions()
   byte tape_action[MAX_PLAYERS];
   int i;
 
+  for (i = 0; i < MAX_PLAYERS; i++)
+  {
+    struct PlayerInfo *player = &stored_player[i];
+
+    // allow engine snapshot if movement attempt was stopped
+    if ((game.snapshot.last_action[i] & KEY_MOTION) != 0 &&
+	(player->action & KEY_MOTION) == 0)
+      game.snapshot.changed_action = TRUE;
+
+    // allow engine snapshot in case of snapping/dropping attempt
+    if ((game.snapshot.last_action[i] & KEY_BUTTON) == 0 &&
+	(player->action & KEY_BUTTON) != 0)
+      game.snapshot.changed_action = TRUE;
+
+    game.snapshot.last_action[i] = player->action;
+  }
+
   /* detect endless loops, caused by custom element programming */
   if (recursion_loop_detected && recursion_loop_depth == 0)
   {
@@ -14694,11 +14720,6 @@ ListNode *SaveEngineSnapshotBuffers()
   SaveSnapshotBuffer(&buffers, ARGS_ADDRESS_AND_SIZEOF(scroll_x));
   SaveSnapshotBuffer(&buffers, ARGS_ADDRESS_AND_SIZEOF(scroll_y));
 
-  /* save level identification information */
-
-  setString(&snapshot_level_identifier, leveldir_current->identifier);
-  snapshot_level_nr = level_nr;
-
 #if 0
   ListNode *node = engine_snapshot_list_rnd;
   int num_bytes = 0;
@@ -14722,14 +14743,45 @@ void SaveEngineSnapshotSingle()
 
   /* finally save all snapshot buffers to single snapshot */
   SaveSnapshotSingle(buffers);
+
+  /* save level identification information */
+  setString(&snapshot_level_identifier, leveldir_current->identifier);
+  snapshot_level_nr = level_nr;
 }
 
-void SaveEngineSnapshotToList()
+static boolean SaveEngineSnapshotToListExt(boolean initial_snapshot)
 {
+  boolean save_snapshot =
+    (initial_snapshot ||
+     (game.snapshot.mode == SNAPSHOT_MODE_EVERY_STEP) ||
+     (game.snapshot.mode == SNAPSHOT_MODE_EVERY_MOVE &&
+      game.snapshot.changed_action));
+
+  game.snapshot.changed_action = FALSE;
+
+  if (game.snapshot.mode == SNAPSHOT_MODE_OFF ||
+      tape.quick_resume ||
+      !save_snapshot)
+    return FALSE;
+
   ListNode *buffers = SaveEngineSnapshotBuffers();
 
   /* finally save all snapshot buffers to snapshot list */
   SaveSnapshotToList(buffers);
+
+  return TRUE;
+}
+
+boolean SaveEngineSnapshotToList()
+{
+  return SaveEngineSnapshotToListExt(FALSE);
+}
+
+void SaveEngineSnapshotToListInitial()
+{
+  FreeEngineSnapshotList();
+
+  SaveEngineSnapshotToListExt(TRUE);
 }
 
 void LoadEngineSnapshotValues()
@@ -14765,12 +14817,17 @@ void LoadEngineSnapshot_Redo(int steps)
   LoadEngineSnapshotValues();
 }
 
-boolean CheckEngineSnapshot()
+boolean CheckEngineSnapshotSingle()
 {
   return (strEqual(snapshot_level_identifier, leveldir_current->identifier) &&
 	  snapshot_level_nr == level_nr);
 }
 
+boolean CheckEngineSnapshotList()
+{
+  return CheckSnapshotList();
+}
+
 
 /* ---------- new game button stuff ---------------------------------------- */
 
@@ -14915,24 +14972,46 @@ void FreeGameButtons()
     FreeGadget(game_gadget[i]);
 }
 
-void MapStopPlayButtons()
+static void MapGameButtonsAtSamePosition(int id)
 {
-  UnmapGadget(game_gadget[GAME_CTRL_ID_UNDO]);
-  UnmapGadget(game_gadget[GAME_CTRL_ID_REDO]);
+  int i;
 
-  MapGadget(game_gadget[GAME_CTRL_ID_STOP]);
-  MapGadget(game_gadget[GAME_CTRL_ID_PLAY]);
+  for (i = 0; i < NUM_GAME_BUTTONS; i++)
+    if (i != id &&
+	gamebutton_info[i].pos->x == gamebutton_info[id].pos->x &&
+	gamebutton_info[i].pos->y == gamebutton_info[id].pos->y)
+      MapGadget(game_gadget[i]);
+}
+
+static void UnmapGameButtonsAtSamePosition(int id)
+{
+  int i;
+
+  for (i = 0; i < NUM_GAME_BUTTONS; i++)
+    if (i != id &&
+	gamebutton_info[i].pos->x == gamebutton_info[id].pos->x &&
+	gamebutton_info[i].pos->y == gamebutton_info[id].pos->y)
+      UnmapGadget(game_gadget[i]);
 }
 
 void MapUndoRedoButtons()
 {
-  UnmapGadget(game_gadget[GAME_CTRL_ID_STOP]);
-  UnmapGadget(game_gadget[GAME_CTRL_ID_PLAY]);
+  UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_UNDO);
+  UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_REDO);
 
   MapGadget(game_gadget[GAME_CTRL_ID_UNDO]);
   MapGadget(game_gadget[GAME_CTRL_ID_REDO]);
 }
 
+void UnmapUndoRedoButtons()
+{
+  UnmapGadget(game_gadget[GAME_CTRL_ID_UNDO]);
+  UnmapGadget(game_gadget[GAME_CTRL_ID_REDO]);
+
+  MapGameButtonsAtSamePosition(GAME_CTRL_ID_UNDO);
+  MapGameButtonsAtSamePosition(GAME_CTRL_ID_REDO);
+}
+
 void MapGameButtons()
 {
   int i;
@@ -14971,15 +15050,18 @@ void GameUndoRedoExt()
   RedrawPlayfield();
   UpdateAndDisplayGameControlValues();
 
+  DrawCompleteVideoDisplay();
   DrawVideoDisplay(VIDEO_STATE_TIME_ON, TapeTime);
   DrawVideoDisplay(VIDEO_STATE_FRAME_ON, FrameCounter);
+  DrawVideoDisplay((tape.single_step ? VIDEO_STATE_1STEP_ON :
+		    VIDEO_STATE_1STEP_OFF), 0);
 
   BackToFront();
 }
 
 void GameUndo(int steps)
 {
-  if (!CheckEngineSnapshot())
+  if (!CheckEngineSnapshotList())
     return;
 
   LoadEngineSnapshot_Undo(steps);
@@ -14989,7 +15071,7 @@ void GameUndo(int steps)
 
 void GameRedo(int steps)
 {
-  if (!CheckEngineSnapshot())
+  if (!CheckEngineSnapshotList())
     return;
 
   LoadEngineSnapshot_Redo(steps);