feat: 躲避敌人攻击功能

fix: 敌人初始化血条

scenes/unit/unit.gd

@@ -7,15 +7,30 @@ class_name Unit
 @onready var sprite: Sprite2D = %Sprite
 @onready var anim_player: AnimationPlayer = $AnimationPlayer
 @onready var health_component: HealthComponent = $HealthComponent
+@onready var flash_timer: Timer = $FlashTimer
 
 func _ready() -> void:
-	print(stats)
 	health_component.setup(stats)
 
+func set_flash_material() -> void:
+	sprite.material = Global.FLASH_MATERIAL
+	flash_timer.start()
 
 func _on_hurtbox_component_on_damaged(hitbox: HitboxComponent) -> void:
 	if health_component.current_health <=0:
 		return
 	
+	var blocked := Global.get_chance_success(stats.block_chance / 100)
+	
+	if blocked:
+		print("Blocked!")
+		return
+		
+	set_flash_material()
+	
 	health_component.take_damage(hitbox.damage)
 	print("%s: %d" % [name, health_component.current_health] )
+
+
+func _on_flash_timer_timeout() -> void:
+	sprite.material = null