feat(武器): 增强核弹效果并添加警告动画

- 提升核弹的攻击力和爆炸半径
- 为核弹添加逐渐扩大的红色警告环
- 改进核爆炸效果，调整粒子参数和震动强度
- 新增填充环着色器用于警告效果

components/Bullets/NuclearBomb.tscn

@@ -1,8 +1,16 @@
-[gd_scene load_steps=7 format=3 uid="uid://6aetx86j5ue"]
+[gd_scene load_steps=10 format=3 uid="uid://6aetx86j5ue"]
 
 [ext_resource type="PackedScene" uid="uid://crtdkysmnkith" path="res://components/Abstracts/BulletBase.tscn" id="1_dpea6"]
 [ext_resource type="Texture2D" uid="uid://gs6jd1qxkl74" path="res://resources/bullets/nuclear-bomb/bomb.png" id="2_1kyo5"]
 [ext_resource type="Script" path="res://scripts/Contents/Bullets/NuclearBomb.gd" id="2_f85ek"]
+[ext_resource type="Shader" path="res://shaders/FilledRing.gdshader" id="4_dheb6"]
+[ext_resource type="Script" path="res://scripts/Statemachine/ShaderStage.gd" id="4_wb270"]
+
+[sub_resource type="ShaderMaterial" id="ShaderMaterial_s7tor"]
+shader = ExtResource("4_dheb6")
+shader_parameter/inner = 0.98
+shader_parameter/outer = 1.0
+shader_parameter/alpha = 0.1
 
 [sub_resource type="SpriteFrames" id="SpriteFrames_mku0w"]
 animations = [{
@@ -32,7 +40,14 @@ indisDamage = true
 canDamageSelf = true
 autoDestroyOnHitMap = false
 
-[node name="texture" parent="." index="0"]
+[node name="warn" type="Node2D" parent="." index="0"]
+unique_name_in_owner = true
+material = SubResource("ShaderMaterial_s7tor")
+script = ExtResource("4_wb270")
+size = Vector2(0, 0)
+color = Color(1, 0, 0, 1)
+
+[node name="texture" parent="." index="1"]
 sprite_frames = SubResource("SpriteFrames_mku0w")
 
 [node name="anchor" type="Node2D" parent="texture" index="1"]
@@ -49,6 +64,5 @@ label_settings = SubResource("LabelSettings_asfas")
 horizontal_alignment = 1
 vertical_alignment = 1
 
-[node name="hitbox" parent="." index="1"]
-visible = false
+[node name="hitbox" parent="." index="2"]
 shape = SubResource("CircleShape2D_nhppq")