feat: Create player input and powerup managers to handle player interactions, movement, actions, targeting, and boost meter mechanics.

scenes/main.gd

@@ -807,7 +807,7 @@ func _assign_random_spawn_positions():
 		print("Assigned spawn %s to player %s" % [assigned_pos, player.name])
 
 func _assign_stop_n_go_spawn_positions(all_players: Array):
-	"""Assigns random spawns on walkable arena tiles for Stop N Go mode."""
+	"""Assigns spawns on column 0, starting from row 1 for Stop N Go mode."""
 	# Sort players for deterministic assignment based on ID
 	all_players.sort_custom(func(a, b): return a.name.to_int() < b.name.to_int())
 
@@ -815,33 +815,12 @@ func _assign_stop_n_go_spawn_positions(all_players: Array):
 	if not enhanced_gridmap:
 		return
 	
-	# Collect all valid walkable positions (not obstacle, not void)
-	var valid_positions: Array[Vector2i] = []
-	for x in range(enhanced_gridmap.columns):
-		for z in range(enhanced_gridmap.rows):
-			var tile = enhanced_gridmap.get_cell_item(Vector3i(x, 0, z))
-			# Accept walkable (0), start (3), finish (3) — skip obstacles (4) and void (-1)
-			if tile != -1 and tile != 4:
-				valid_positions.append(Vector2i(x, z))
-	
-	valid_positions.shuffle()
-	
-	var used_positions: Array[Vector2i] = []
+	var col = 0
+	var current_row = 1
 	
 	for player in all_players:
-		var assigned_pos = Vector2i(-1, -1)
-		
-		# Find a random walkable position not occupied by another player
-		for pos in valid_positions:
-			if pos not in used_positions:
-				assigned_pos = pos
-				break
-		
-		if assigned_pos == Vector2i(-1, -1):
-			# Fallback: center of arena
-			assigned_pos = Vector2i(int(enhanced_gridmap.columns / 2), int(enhanced_gridmap.rows / 2))
-		
-		used_positions.append(assigned_pos)
+		var assigned_pos = Vector2i(col, current_row)
+		current_row += 1
 		
 		# Ensure immediate sync
 		player.position = player.grid_to_world(assigned_pos)
@@ -851,7 +830,7 @@ func _assign_stop_n_go_spawn_positions(all_players: Array):
 		if can_rpc():
 			player.rpc("set_spawn_position", assigned_pos)
 		
-		print("[StopNGo] Assigned random spawn %s to player %s" % [assigned_pos, player.name])
+		print("[StopNGo] Assigned spawn %s to player %s" % [assigned_pos, player.name])
 
 func _assign_portal_mode_spawn_positions(all_players: Array):
 	"""Assigns spawns to different quadrants for Tekton Doors mode."""
@@ -1584,14 +1563,23 @@ func randomize_item_at_position(grid_position: Vector2i):
 
 		if is_ground:
 			var new_item = 7
-			# Use ScarcityController
-			new_item = ScarcityController.get_random_tile_id()
+			
+			var get_mode_specific_tile = func():
+				if LobbyManager.game_mode != "Stop n Go" and LobbyManager.game_mode != "Tekton Doors":
+					# 60% Chance for Common (7-10), 40% for PowerUp
+					if randf() <= 0.6:
+						return [7, 8, 9, 10].pick_random()
+					else:
+						return ScarcityModel.SPECIAL_TILES.pick_random()
+				return ScarcityController.get_random_tile_id()
+				
+			new_item = get_mode_specific_tile.call()
 			
 			# If we are replacing an existing item, try to ensure it changes
 			if current_item != -1:
 				var max_retries = 3
 				while new_item == current_item and max_retries > 0:
-					new_item = ScarcityController.get_random_tile_id()
+					new_item = get_mode_specific_tile.call()
 					max_retries -= 1
 			
 			sync_grid_item(cell.x, cell.y, cell.z, new_item)
@@ -1654,10 +1642,12 @@ func randomize_game_grid():
 		
 	var enhanced_gridmap = $EnhancedGridMap
 	if enhanced_gridmap:
-		# Use density-aware callable: 60% chance for a real tile, 40% for none
+		# Custom spawn ratio for Free Mode: 60% common tiles, 40% empty tiles (start of game)
 		var density_callable = func():
-			if randf() > 0.6: return -1
-			return ScarcityController.get_random_tile_id()
+			if randf() <= 0.6:
+				return ScarcityModel.STANDARD_TILES.pick_random()
+			else:
+				return -1 # Empty
 			
 		enhanced_gridmap.randomize_floor(1, density_callable)