fix: empty out all gridmap layers under candy pump and use precise duration timer for projectile destruction

scripts/controllers/candy_cannon_controller.gd

@@ -115,17 +115,21 @@ func spawn_projectile(target_world_pos: Vector3, duration: float) -> void:
 	
 	var mid_y = max(global_position.y, target_world_pos.y) + 4.0
 	var tween_y = create_tween()
+	
+	# Important: Make sure both halves of the y-tween together equal `duration`
 	tween_y.tween_property(projectile, "global_position:y", mid_y, duration / 2.0).set_trans(Tween.TRANS_SINE).set_ease(Tween.EASE_OUT)
-	tween_y.tween_property(projectile, "global_position:y", target_world_pos.y, duration / 2.0).set_trans(Tween.TRANS_QUAD).set_ease(Tween.EASE_IN).set_delay(duration / 2.0)
+	tween_y.tween_property(projectile, "global_position:y", target_world_pos.y, duration / 2.0).set_trans(Tween.TRANS_QUAD).set_ease(Tween.EASE_IN)
 	
 	# Add some spin to the projectile
 	var spin_tween = create_tween()
 	spin_tween.set_loops()
 	spin_tween.tween_property(projectile, "rotation", Vector3(PI*2, PI*2, PI*2), 0.5).as_relative()
 	
-	tween.chain().tween_callback(func():
-		spin_tween.kill()
-		projectile.queue_free()
+	# We need to wait for the X/Z tween to finish, but since it's parallel we can just use a separate timer or tween
+	# to kill the projectile exactly when duration is reached, ensuring it doesn't get killed early by X/Z finishing 1 frame earlier than Y
+	get_tree().create_timer(duration).timeout.connect(func():
+		if is_instance_valid(spin_tween): spin_tween.kill()
+		if is_instance_valid(projectile): projectile.queue_free()
 	)
 
 func can_rpc() -> bool:

scripts/managers/gauntlet_manager.gd

@@ -391,43 +391,47 @@ func sync_arena_setup() -> void:
 	print("[Gauntlet] Client: Syncing Arena Setup (%dx%d)..." % [ARENA_COLUMNS, ARENA_ROWS])
 	_apply_arena_setup()
 
-func _apply_arena_setup() -> void:
-	"""Shared arena layout logic for host + clients."""
-	if not gridmap:
-		gridmap = get_parent().get_node_or_null("EnhancedGridMap")
-	if not gridmap:
-		gridmap = get_node_or_null("/root/Main/EnhancedGridMap")
-	if not gridmap: return
-	
-	# Resize grid (bypass setters that wipe the map)
-	gridmap.set("columns", ARENA_COLUMNS)
-	gridmap.set("rows", ARENA_ROWS)
-	
-	# Clear all
-	gridmap.clear()
-	
-	# Build the 20x20 arena
-	for x in range(ARENA_COLUMNS):
-		for z in range(ARENA_ROWS):
-			var pos = Vector2i(x, z)
-			
-			# Center 3x3 block: NPC obstacle (Candy Pump)
+	func _apply_arena_setup() -> void:
+		"""Shared arena layout logic for host + clients."""
+		if not gridmap:
+			gridmap = get_parent().get_node_or_null("EnhancedGridMap")
+		if not gridmap:
+			gridmap = get_node_or_null("/root/Main/EnhancedGridMap")
+		if not gridmap: return
+		
+		# Resize grid (bypass setters that wipe the map)
+		gridmap.set("columns", ARENA_COLUMNS)
+		gridmap.set("rows", ARENA_ROWS)
+		
+		# Clear all
+		gridmap.clear()
+		
+		# Build the 20x20 arena
+		for x in range(ARENA_COLUMNS):
+			for z in range(ARENA_ROWS):
+				var pos = Vector2i(x, z)
+				
+				# Center 3x3 block: NPC obstacle (Candy Pump)
 				if _is_npc_zone(pos):
 					# Make the floor empty (-1) beneath the Candy Pump
+					# We need to clear all possible layers just in case
 					gridmap.set_cell_item(Vector3i(x, 0, z), -1)
 					gridmap.set_cell_item(Vector3i(x, 1, z), -1)
+					gridmap.set_cell_item(Vector3i(x, 2, z), -1)
 					continue
-			
-			# Boundary walls: perimeter (row 0, row 19, col 0, col 19)
-			if x == 0 or x == ARENA_COLUMNS - 1 or z == 0 or z == ARENA_ROWS - 1:
-				# Also make border walls visually walkable floors instead of red blocks
+				
+				# Boundary walls: perimeter (row 0, row 19, col 0, col 19)
+				if x == 0 or x == ARENA_COLUMNS - 1 or z == 0 or z == ARENA_ROWS - 1:
+					# Also make border walls visually walkable floors instead of red blocks
+					gridmap.set_cell_item(Vector3i(x, 0, z), TILE_WALKABLE)
+					gridmap.set_cell_item(Vector3i(x, 1, z), -1)
+					gridmap.set_cell_item(Vector3i(x, 2, z), -1)
+					continue
+				
+				# Interior: walkable floor
 				gridmap.set_cell_item(Vector3i(x, 0, z), TILE_WALKABLE)
 				gridmap.set_cell_item(Vector3i(x, 1, z), -1)
-				continue
-			
-			# Interior: walkable floor
-			gridmap.set_cell_item(Vector3i(x, 0, z), TILE_WALKABLE)
-			gridmap.set_cell_item(Vector3i(x, 1, z), -1)
+				gridmap.set_cell_item(Vector3i(x, 2, z), -1)
 	
 	gridmap.diagonal_movement = true
 	gridmap.update_grid_data()