Made ship more responsive, refactored responsibility for hit/death into the thing that got hit/died

Scripts/ship.gd

@@ -1,15 +1,21 @@
 extends CharacterBody2D
 
-const ROT_SPEED = 3.0
-const MOVE_ACC = 100
+const ROT_SPEED = 4.0
+const MOVE_ACC = 120
 const FRICTION = 0.995
 const FIRE_RATE = 0.2
+const INV_FLASH_INT = 0.1
 
 @export var Laser: PackedScene
 @export var pew: Resource
 
 var speed = Vector2(0, 0)
 var last_shot = 0.0
+var last_flash = 0.0
+var inv_time = 0.0
+
+var explosion = preload('res://Scenes/explosion.tscn')
+var pop = preload("res://Sounds/Explosion5.wav")
 
 func _ready() -> void:
 	Game.player = self
@@ -47,6 +53,15 @@ func _physics_process(delta: float) -> void:
 
 	Utils.wrap_position(self)
 	
+	if is_invincible():
+		inv_time -= delta
+		last_flash += delta
+		if last_flash >= INV_FLASH_INT:
+			$AnimatedSprite2D.visible = !$AnimatedSprite2D.visible
+			last_flash = 0.0
+	else:
+		$AnimatedSprite2D.visible = true
+	
 		# --- Fire projectile on space ---
 	last_shot += delta
 	if Input.is_action_pressed("ui_accept") and last_shot >= FIRE_RATE: # default = Space/Enter
@@ -58,6 +73,25 @@ func _physics_process(delta: float) -> void:
 		bullet.transform = $Muzzle.global_transform
 		last_shot = 0.0
 
-func reset():
+func die():
 	position = get_viewport_rect().size / 2
 	speed = Vector2(0, 0)
+	inv_time = 3.0
+	
+func is_invincible():
+	return inv_time > 0
+	
+func hit() -> bool:
+	if !is_invincible():
+		Game.set_lives(Game.lives - 1)
+			
+		Utils.play_sound(pop, get_parent())
+		
+		var boom = explosion.instantiate()
+		boom.position = global_position
+		boom.scale = Vector2(6, 6)
+		get_parent().add_child(boom)
+		die()
+		return true
+		
+	return false