feat: 添加Hitbox和Hurtbox，添加敌人和玩家之间的碰撞

scenes/unit/players/player_well_rounded.tscn

@@ -11,7 +11,10 @@ _data = [Vector2(0, 0), 0.0, 0.0, 0, 0, Vector2(1, 1), 0.0, 0.0, 0, 0]
 point_count = 2
 
 [sub_resource type="CircleShape2D" id="CircleShape2D_etcc1"]
-radius = 30.0
+radius = 2.236068
+
+[sub_resource type="CircleShape2D" id="CircleShape2D_ht2l1"]
+radius = 33.0
 
 [node name="PlayerWellRounded" unique_id=2022554550 instance=ExtResource("1_wkafa")]
 collision_mask = 2
@@ -38,7 +41,7 @@ z_index = 1
 texture = ExtResource("2_etcc1")
 
 [node name="CollisionShape2D" parent="." index="1" unique_id=139786467]
-visible = false
+z_index = 1
 position = Vector2(0, -31)
 shape = SubResource("CircleShape2D_etcc1")
 
@@ -51,5 +54,14 @@ one_shot = true
 [node name="TrailTimer" type="Timer" parent="." index="5" unique_id=2006934730]
 unique_name_in_owner = true
 
+[node name="HurtboxComponent" parent="." index="6" unique_id=1155790880]
+collision_layer = 32
+collision_mask = 4
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="HurtboxComponent" index="0" unique_id=1411044109]
+z_index = 1
+position = Vector2(0, -32)
+shape = SubResource("CircleShape2D_ht2l1")
+
 [connection signal="timeout" from="DashTimer" to="." method="_on_dash_timer_timeout"]
 [connection signal="timeout" from="TrailTimer" to="Visuals/Trail" method="_on_trail_timer_timeout"]