feat: 1. 添加武器击退功能，player 使用weapon_behavior/melee_behavior(hitbox 会调用 setup 初始化) 的 hitbox 击中 enemy_slow，enemy_slow拿到hitbox的knockback_power，以及hitbox指向enemy的方向，然后朝着该方向，使用power击退：调用enemy.gd 的 apply_knockback，然后_process中会对position修改，同时开启定时器，定时器结束的时候，使用 reset_knockback 重置

scenes/unit/enemy/enemy.gd

@@ -4,9 +4,12 @@ class_name Enemy
 @export var flock_push := 20.0
 
 @onready var vision_area: Area2D = $VisionArea
+@onready var knockback_timer: Timer = $KnockbackTimer
 
 var can_move := true
 
+var knockback_dir: Vector2
+var knockback_power: float
 
 # Called when the node enters the scene tree for the first time.
 func _ready() -> void:
@@ -21,8 +24,7 @@ func _process(delta: float) -> void:
 	if not can_move_forwards_player():
 		return
 	
-	position += get_move_direction() * stats.speed * delta
-	
+	position += (get_move_direction() + knockback_dir * knockback_power) * stats.speed * delta
 	update_rotate()
 		
 	
@@ -53,5 +55,33 @@ func can_move_forwards_player() -> bool:
 	return is_instance_valid(Global.player) and\
 	global_position.distance_to(Global.player.position) > 60
 	
+func apply_knockback(knock_dir: Vector2, knock_power: float) -> void:
+	knockback_dir = knock_dir
+	knockback_power = knock_power
+	if knockback_timer.time_left > 0:
+		knockback_timer.stop()
+		reset_knockback()
+		
+	knockback_timer.start()
 	
+func reset_knockback() -> void:
+	knockback_dir = Vector2.ZERO
+	knockback_power = 0
+
+
+func _on_knockback_timer_timeout() -> void:
+	reset_knockback()
 	
+func _on_hurtbox_component_on_damaged(hitbox: HitboxComponent) -> void:
+	super._on_hurtbox_component_on_damaged(hitbox)
+	
+	if hitbox.knockback_power > 0:
+		var dir := hitbox.source.global_position.direction_to(global_position)
+		apply_knockback(dir, hitbox.knockback_power)
+		
+		
+		
+		
+		
+		
+		

scenes/unit/enemy/enemy_chaser_slow.tscn

@@ -63,3 +63,9 @@ offset_top = -95.0
 offset_bottom = -75.0
 back_color = Color(0.015686275, 0.05490196, 0.16862746, 1)
 fill_color = Color(0.37254903, 0.5372549, 0.75686276, 1)
+
+[node name="KnockbackTimer" type="Timer" parent="." index="9" unique_id=1031574323]
+wait_time = 0.4
+one_shot = true
+
+[connection signal="timeout" from="KnockbackTimer" to="." method="_on_knockback_timer_timeout"]

scenes/unit/unit.gd

@@ -27,6 +27,8 @@ func _on_hurtbox_component_on_damaged(hitbox: HitboxComponent) -> void:
 		Global.on_create_block_text.emit(self)
 		return
 		
+	
+		
 	set_flash_material()
 	health_component.take_damage(hitbox.damage)
 	Global.on_create_damage_text.emit(self, hitbox)