feat(子弹): 添加链枪子弹资源与逻辑

添加链枪子弹的图片资源、脚本和场景文件
为RainbowCat子弹添加穿透属性和生命周期
在子弹AI预设中添加面向鼠标的功能

components/Bullets/ChainGun.tscn

@@ -0,0 +1,20 @@
+[gd_scene load_steps=5 format=3 uid="uid://bgt6dok3wc7qs"]
+
+[ext_resource type="PackedScene" uid="uid://crtdkysmnkith" path="res://components/Abstracts/BulletBase.tscn" id="1_0gg4y"]
+[ext_resource type="Texture2D" uid="uid://ccxdfsg5071t4" path="res://resources/bullets/chain-gun/Chain_Gun.webp" id="2_4hyk3"]
+[ext_resource type="Script" path="res://scripts/Contents/Bullets/ChainGun.gd" id="2_l7jtn"]
+
+[sub_resource type="SpriteFrames" id="SpriteFrames_cl70o"]
+
+[node name="ChainGun" instance=ExtResource("1_0gg4y")]
+script = ExtResource("2_l7jtn")
+
+[node name="texture" parent="." index="0"]
+sprite_frames = SubResource("SpriteFrames_cl70o")
+
+[node name="node" type="Sprite2D" parent="texture" index="1"]
+position = Vector2(74, 0)
+texture = ExtResource("2_4hyk3")
+
+[node name="hitbox" parent="." index="1"]
+disabled = true

components/Bullets/RainbowCat.tscn

@@ -51,6 +51,7 @@ alpha_curve = SubResource("CurveTexture_pwojl")
 
 [node name="RainbowCat" instance=ExtResource("1_vvwmq")]
 script = ExtResource("2_4c1xc")
+lifeTime = 3000.0
 
 [node name="texture" parent="." index="0"]
 rotation = 1.5708

resources/bullets/chain-gun/Chain_Gun.webp.import

@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://ccxdfsg5071t4"
+path="res://.godot/imported/Chain_Gun.webp-8454ff6a6dc03f15f9f16b345bdd4990.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://resources/bullets/chain-gun/Chain_Gun.webp"
+dest_files=["res://.godot/imported/Chain_Gun.webp-8454ff6a6dc03f15f9f16b345bdd4990.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1

scripts/Contents/AIPresets/Bullet.gd

@@ -10,3 +10,5 @@ static func trace(bullet: BulletBase, target: Vector2, speed: float):
 		bullet.position.angle_to_point(target),
 		speed
 	)
+static func faceToMouse(bullet: BulletBase):
+	bullet.rotation = bullet.position.angle_to_point(bullet.get_global_mouse_position())

scripts/Contents/Bullets/ChainGun.gd

@@ -0,0 +1,6 @@
+extends BulletBase
+
+func ai():
+	PresetBulletAI.faceToMouse(self)
+func applyDot():
+	pass

scripts/Contents/Bullets/RainbowCat.gd

@@ -1,5 +1,7 @@
 extends BulletBase
 class_name RainbowCat
 
+func register():
+	penerate = 1
 func ai():
 	PresetBulletAI.forward(self, rotation)