added random number initialization function for native BD engine

[rocksndiamonds.git] / src / game_bd / main_bd.c

diff --git a/src/game_bd/main_bd.c b/src/game_bd/main_bd.c
index d40b76e47cdde8c2c4c3dbde9b97f133a9aebcc9..fdc5cf0c0a6350f576ac309400ad14bb768536e7 100644 (file)
--- a/src/game_bd/main_bd.c
+++ b/src/game_bd/main_bd.c
@@ -1,10 +1,10 @@
 // ============================================================================
-// Mirror Magic -- McDuffin's Revenge
+// Rocks'n'Diamonds - McDuffin Strikes Back!
 // ----------------------------------------------------------------------------
-// (c) 1995-2023 by Artsoft Entertainment
-//                  Holger Schemel
-//                  info@artsoft.org
-//                  https://www.artsoft.org/
+// (c) 1995-2024 by Artsoft Entertainment
+//                         Holger Schemel
+//                 info@artsoft.org
+//                 https://www.artsoft.org/
 // ----------------------------------------------------------------------------
 // main_bd.c
 // ============================================================================
@@ -17,10 +17,154 @@ struct LevelInfo_BD native_bd_level;
 struct EngineSnapshotInfo_BD engine_snapshot_bd;
 
 
+// ============================================================================
+// initialization functions
+// ============================================================================
+
+void InitGfxBuffers_BD(void)
+{
+  ReCreateBitmap(&gd_screen_bitmap, SXSIZE, SYSIZE);
+
+  set_cell_size(TILESIZE_VAR);
+  set_play_area(SXSIZE, SYSIZE);
+}
+
+void bd_open_all(void)
+{
+  InitGraphicInfo_BD();
+
+  gd_cave_init();
+  gd_cave_db_init();
+
+  gd_c64_import_init_tables();
+
+  gd_caveset_clear();
+
+  gd_init_keystate();
+
+  gd_sound_init();
+}
+
+void bd_close_all(void)
+{
+}
+
+
 // ============================================================================
 // level file functions
 // ============================================================================
 
+void setLevelInfoToDefaults_BD_Ext(int width, int height)
+{
+  GdCave *cave = native_bd_level.cave;
+
+  if (cave != NULL)
+    gd_cave_free(cave);
+
+  // get empty cave, using default values
+  cave = gd_cave_new();
+
+  // set cave size, if defined
+  if (width > 0 && height > 0)
+  {
+    cave->w = width;
+    cave->h = height;
+  }
+
+  gd_flatten_cave(cave, 0);
+
+  cave->selectable = TRUE;
+  cave->intermission = FALSE;
+
+  native_bd_level.cave = cave;
+  native_bd_level.replay = NULL;
+
+  native_bd_level.cave_nr = 0;
+  native_bd_level.level_nr = 0;
+
+  native_bd_level.loaded_from_caveset = FALSE;
+}
+
+void setLevelInfoToDefaults_BD(void)
+{
+  setLevelInfoToDefaults_BD_Ext(0, 0);
+}
+
+boolean LoadNativeLevel_BD(char *filename, int level_pos, boolean level_info_only)
+{
+  static char *filename_loaded = NULL;
+
+  if (filename_loaded == NULL || !strEqual(filename, filename_loaded))
+  {
+    if (!gd_caveset_load_from_file(filename))
+    {
+      if (!level_info_only)
+       Warn("cannot load BD cave set from file '%s'", filename);
+
+      return FALSE;
+    }
+
+    setString(&filename_loaded, filename);
+  }
+
+  if (level_pos < 0 || level_pos >= 5 * gd_caveset_count())
+  {
+    Warn("invalid level position %d in BD cave set", level_pos);
+
+    return FALSE;
+  }
+
+  native_bd_level.cave_nr  = level_pos % gd_caveset_count();
+  native_bd_level.level_nr = level_pos / gd_caveset_count();
+
+  if (native_bd_level.cave != NULL)
+    gd_cave_free(native_bd_level.cave);
+
+  // get selected cave, prepared for playing
+  native_bd_level.cave = gd_get_prepared_cave_from_caveset(native_bd_level.cave_nr,
+                                                          native_bd_level.level_nr);
+
+  // set better initial cave speed (to set better native replay tape length)
+  set_initial_cave_speed(native_bd_level.cave);
+
+  native_bd_level.loaded_from_caveset = TRUE;
+
+  // check if this cave has any replays
+  if (native_bd_level.cave->replays != NULL)
+  {
+    GList *item = native_bd_level.cave->replays;
+
+    // try to find replay that was recorded for this difficulty level
+    while (item != NULL &&
+          (item->data == NULL ||
+           ((GdReplay *)item->data)->success == FALSE ||
+           ((GdReplay *)item->data)->level != native_bd_level.level_nr))
+      item = item->next;
+
+    // matching replay found
+    if (item != NULL)
+      native_bd_level.replay = (GdReplay *)item->data;
+  }
+
+  return TRUE;
+}
+
+
+// ============================================================================
+// game engine functions
+// ============================================================================
+
+int map_action_RND_to_BD(int action)
+{
+  GdDirection player_move = gd_direction_from_keypress(action & JOY_UP,
+                                                      action & JOY_DOWN,
+                                                      action & JOY_LEFT,
+                                                      action & JOY_RIGHT);
+  boolean player_fire = (action & (JOY_BUTTON_1 | JOY_BUTTON_2));
+
+  return (player_move | (player_fire ? GD_REPLAY_FIRE_MASK : 0));
+}
+
 int map_action_BD_to_RND(int action)
 {
   GdDirection player_move = action & GD_REPLAY_MOVE_MASK;
@@ -39,12 +183,20 @@ int map_action_BD_to_RND(int action)
   return (action_move | action_fire);
 }
 
-void setLevelInfoToDefaults_BD_Ext(int width, int height)
+boolean checkGameRunning_BD(void)
 {
-  // ...
+  return (game_bd.game != NULL && game_bd.game->state_counter == GAME_INT_CAVE_RUNNING);
 }
 
-void setLevelInfoToDefaults_BD(void)
+unsigned int InitEngineRandom_BD(int seed)
 {
-  setLevelInfoToDefaults_BD_Ext(0, 0);
+  if (seed == NEW_RANDOMIZE)
+  {
+    // get randomly selected seed to render the cave
+    seed = g_random_int_range(0, GD_CAVE_SEED_MAX);
+  }
+
+  game_bd.random_seed = seed;
+
+  return (unsigned int)seed;
 }