feat: 1. 添加武器基础脚本

2. 添加武器基本resources
3. 武器碰撞 RangeArea 进入和退出检测
4. 添加 Hitbox 进行武器碰撞敌人区域（只是添加了，功能还没实现）
5. 武器冷却时间 weapon_base / CooldownTimer

scenes/weapons/melee/weapon_punch.tscn

@@ -0,0 +1,20 @@
+[gd_scene format=3 uid="uid://d1igydtpm3sq8"]
+
+[ext_resource type="PackedScene" uid="uid://dcc7rsdy4j8v6" path="res://scenes/weapons/weapon_base.tscn" id="1_soyvn"]
+[ext_resource type="PackedScene" uid="uid://c0fyx8gj5uexl" path="res://scenes/components/hitbox_component.tscn" id="2_gq287"]
+
+[sub_resource type="RectangleShape2D" id="RectangleShape2D_gq287"]
+size = Vector2(52, 42)
+
+[node name="WeaponPunch" unique_id=63743776 instance=ExtResource("1_soyvn")]
+
+[node name="Sprite2D" parent="." index="0" unique_id=1011668514]
+position = Vector2(21, 1)
+
+[node name="HitboxComponent" parent="Sprite2D" index="0" unique_id=151235566 instance=ExtResource("2_gq287")]
+scale = Vector2(2, 2)
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="Sprite2D/HitboxComponent" index="0" unique_id=1064980236]
+z_index = 1
+shape = SubResource("RectangleShape2D_gq287")
+debug_color = Color(0.9556908, 0.042769283, 0.5218647, 0.41960785)

scenes/weapons/weapon.gd

@@ -0,0 +1,36 @@
+extends Node2D
+class_name Weapon
+
+
+@onready var sprite_2d: Sprite2D = $Sprite2D
+@onready var collision: CollisionShape2D = %CollisionShape2D
+@onready var cooldown_timer: Timer = $CooldownTimer
+
+var data: ItemWeapon
+var is_attacking := false
+var atk_start_pos: Vector2
+var targets: Array[Enemy]
+var closest_target: Enemy
+var weapon_spread: float
+
+func _ready() -> void:
+	atk_start_pos = sprite_2d.position
+	
+
+func setup_weapon(data: ItemWeapon) -> void:
+	self.data = data
+	collision.shape.radius = data.stats.max_range
+	
+
+func can_use_weapon() -> bool:
+	return cooldown_timer.is_stopped() and closest_target
+
+
+func _on_range_area_area_entered(area: Area2D) -> void:
+	targets.push_back(area)
+
+
+func _on_range_area_area_exited(area: Area2D) -> void:
+	targets.erase(area)
+	if targets.size() == 0:
+		closest_target = null

scenes/weapons/weapon.gd.uid

@@ -0,0 +1 @@
+uid://d2fxp4oky50qs

scenes/weapons/weapon_base.tscn

@@ -0,0 +1,29 @@
+[gd_scene format=3 uid="uid://dcc7rsdy4j8v6"]
+
+[ext_resource type="Script" uid="uid://d2fxp4oky50qs" path="res://scenes/weapons/weapon.gd" id="1_v4xn6"]
+[ext_resource type="Texture2D" uid="uid://l5hst1cf27oo" path="res://assets/sprites/Weapons/Melee/Weapon_Punch.png" id="2_uvw4m"]
+
+[sub_resource type="CircleShape2D" id="CircleShape2D_vffjk"]
+radius = 150.0
+
+[node name="WeaponBase" type="Node2D" unique_id=63743776]
+script = ExtResource("1_v4xn6")
+
+[node name="Sprite2D" type="Sprite2D" parent="." unique_id=1011668514]
+scale = Vector2(0.5, 0.5)
+texture = ExtResource("2_uvw4m")
+
+[node name="RangeArea" type="Area2D" parent="." unique_id=877203105]
+collision_mask = 2
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="RangeArea" unique_id=902525969]
+unique_name_in_owner = true
+shape = SubResource("CircleShape2D_vffjk")
+
+[node name="CooldownTimer" type="Timer" parent="." unique_id=1814049304]
+one_shot = true
+
+[node name="WeaponBehavior" type="Node2D" parent="." unique_id=1507497844]
+
+[connection signal="area_entered" from="RangeArea" to="." method="_on_range_area_area_entered"]
+[connection signal="area_exited" from="RangeArea" to="." method="_on_range_area_area_exited"]