added respawn timer for falling blocks

objects/environment/falling_block/falling_block.gd

@@ -3,7 +3,8 @@ extends KinematicBody2D
 var fall = false
 export var fall_speed = 0.5
 onready var startpos = position
-onready var timer = $Timer
+onready var fall_timer = $FallTimer
+onready var refresh_timer = $RefreshTimer
 
 func _physics_process(delta):
 	if fall:
@@ -11,18 +12,21 @@ func _physics_process(delta):
 
 func _on_Area2D_area_entered(area):
 	if area.is_in_group("player"):
-		timer.start()
+		fall_timer.start()
 
 
 func _on_VisibilityNotifier2D_screen_exited():
 	position = startpos
 	fall = false
 
+func _on_RefreshTimer_timeout():
+	position = startpos
+	fall = false
 
-func _on_Timer_timeout():
+func _on_FallTimer_timeout():
 	fall = true
+	refresh_timer.start()
 
 
 func _on_Area2D_area_exited(area):
-	timer.stop()
-
+	fall_timer.stop()