feat: 添加手枪武器

scenes/weapons/range/range_behavior.gd

@@ -0,0 +1,38 @@
+extends WeaponBehavior
+class_name RangeBehavior
+
+@onready var muzzle: Marker2D = %Muzzle
+
+
+func execute_attack() -> void:
+	weapon.is_attacking = true
+
+	create_projectile()
+	
+	var tween := create_tween()
+	var attack_pos := Vector2(weapon.atk_start_pos.x - weapon.data.stats.recoil, weapon.atk_start_pos.y)
+	tween.tween_property(weapon.sprite_2d, "position", attack_pos, weapon.data.stats.recoil_duration)
+	tween.tween_property(weapon.sprite_2d, "position", weapon.atk_start_pos, weapon.data.stats.recoil_duration)
+	
+	await tween.finished
+	weapon.is_attacking = false
+	critical = false
+	
+func create_projectile() -> void:
+	var instance := weapon.data.stats.projectile_scene.instantiate() as Projectile
+	get_tree().root.add_child(instance)
+	
+	instance.global_position = muzzle.global_position
+	
+	var velocity := Vector2.RIGHT.rotated(weapon.rotation) * weapon.data.stats.projectile_speed
+	instance.set_projectile(velocity, get_damage(), critical, weapon.data.stats.knockback, weapon.get_parent())
+	
+
+# Called when the node enters the scene tree for the first time.
+func _ready() -> void:
+	pass # Replace with function body.
+
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(delta: float) -> void:
+	pass