feat(角色): 为熊角色添加新的光枪攻击技能

添加新的光枪攻击类型(类型5)，包括：
- 新增光枪子弹预制体及脚本
- 添加光枪音效资源
- 在熊角色中实现光枪攻击逻辑
- 新增光枪轨迹着色器
- 配置攻击冷却时间为5500ms

光枪攻击会发射10-15发彩色追踪子弹，形成环绕效果

components/Bullets/BossAttack/Bear/LightGun.tscn

@@ -0,0 +1,187 @@
+[gd_scene load_steps=20 format=3 uid="uid://chlefxyj2ood"]
+
+[ext_resource type="PackedScene" uid="uid://crtdkysmnkith" path="res://components/Abstracts/BulletBase.tscn" id="1_kwotu"]
+[ext_resource type="Script" path="res://scripts/Contents/Bullets/BossAttack/Bear/LightGun.gd" id="2_jid6s"]
+[ext_resource type="Script" path="res://scripts/Statemachine/ShaderStage.gd" id="3_or7kk"]
+[ext_resource type="Shader" path="res://shaders/LightTrack.gdshader" id="3_spbey"]
+[ext_resource type="Texture2D" uid="uid://cf065c7jjufq" path="res://resources/bullets/light-express/Ethereal_Lance.webp" id="5_bepne"]
+
+[sub_resource type="Gradient" id="Gradient_ep4dl"]
+offsets = PackedFloat32Array(0, 0.16, 0.32, 0.48, 0.64, 0.8, 1)
+colors = PackedColorArray(1, 0, 0, 1, 1, 0.447059, 0, 1, 1, 0.890625, 0, 1, 0, 0.820313, 0.128174, 1, 0, 1, 0.859375, 1, 0, 0.53125, 1, 1, 0.429688, 0, 1, 1)
+
+[sub_resource type="GradientTexture1D" id="GradientTexture1D_aqmnp"]
+gradient = SubResource("Gradient_ep4dl")
+
+[sub_resource type="Animation" id="Animation_ufqp1"]
+length = 0.001
+tracks/0/type = "bezier"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("track:material:shader_parameter/color:a")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"handle_modes": PackedInt32Array(0),
+"points": PackedFloat32Array(0, -0.25, 0, 0.25, 0),
+"times": PackedFloat32Array(0)
+}
+tracks/1/type = "bezier"
+tracks/1/imported = false
+tracks/1/enabled = true
+tracks/1/path = NodePath("sword:position:x")
+tracks/1/interp = 1
+tracks/1/loop_wrap = true
+tracks/1/keys = {
+"handle_modes": PackedInt32Array(0),
+"points": PackedFloat32Array(-1000, -0.25, 0, 0.25, 0),
+"times": PackedFloat32Array(0)
+}
+tracks/2/type = "bezier"
+tracks/2/imported = false
+tracks/2/enabled = true
+tracks/2/path = NodePath("%hitbox:position:x")
+tracks/2/interp = 1
+tracks/2/loop_wrap = true
+tracks/2/keys = {
+"handle_modes": PackedInt32Array(0),
+"points": PackedFloat32Array(-1000, -0.25, 0, 0.25, 0),
+"times": PackedFloat32Array(0)
+}
+
+[sub_resource type="Animation" id="Animation_oinqg"]
+resource_name = "destroy"
+length = 0.5
+step = 0.1
+
+[sub_resource type="Animation" id="Animation_ynxlt"]
+resource_name = "loop"
+loop_mode = 1
+step = 0.1
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath(".:rotation")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0, 1),
+"transitions": PackedFloat32Array(1, 1),
+"update": 0,
+"values": [0.0, 6.28319]
+}
+
+[sub_resource type="Animation" id="Animation_kmogx"]
+resource_name = "spawn"
+length = 3.0
+step = 0.05
+tracks/0/type = "bezier"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("track:material:shader_parameter/color:a")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"handle_modes": PackedInt32Array(0, 0, 0, 0),
+"points": PackedFloat32Array(0, -0.25, 0, 0.25, 0, 1, -0.25, 0, 0.25, 0, 1, -0.25, 0, 0.25, 0, 0, -0.25, 0, 0.25, 0),
+"times": PackedFloat32Array(0, 0.5, 2.5, 3)
+}
+tracks/1/type = "bezier"
+tracks/1/imported = false
+tracks/1/enabled = true
+tracks/1/path = NodePath("sword:position:x")
+tracks/1/interp = 1
+tracks/1/loop_wrap = true
+tracks/1/keys = {
+"handle_modes": PackedInt32Array(0, 0),
+"points": PackedFloat32Array(-1000, -0.25, 0, 0.25, 0, 1000, -0.25, 0, 0.25, 0),
+"times": PackedFloat32Array(2.5, 3)
+}
+tracks/2/type = "bezier"
+tracks/2/imported = false
+tracks/2/enabled = true
+tracks/2/path = NodePath("%hitbox:position:x")
+tracks/2/interp = 1
+tracks/2/loop_wrap = true
+tracks/2/keys = {
+"handle_modes": PackedInt32Array(0, 0),
+"points": PackedFloat32Array(-1000, -0.25, 0, 0.25, 0, 1000, -0.25, 0, 0.25, 0),
+"times": PackedFloat32Array(2.5, 3)
+}
+
+[sub_resource type="AnimationLibrary" id="AnimationLibrary_d5b1d"]
+_data = {
+"RESET": SubResource("Animation_ufqp1"),
+"destroy": SubResource("Animation_oinqg"),
+"loop": SubResource("Animation_ynxlt"),
+"spawn": SubResource("Animation_kmogx")
+}
+
+[sub_resource type="ShaderMaterial" id="ShaderMaterial_sjtia"]
+shader = ExtResource("3_spbey")
+shader_parameter/color = Color(1, 1, 1, 0)
+
+[sub_resource type="Curve" id="Curve_h144l"]
+_data = [Vector2(0, 1), 0.0, 0.0, 0, 0, Vector2(1, 0), 0.0, 0.0, 0, 0]
+point_count = 2
+
+[sub_resource type="CurveTexture" id="CurveTexture_iq806"]
+curve = SubResource("Curve_h144l")
+
+[sub_resource type="Curve" id="Curve_cbjl2"]
+_data = [Vector2(0, 1), 0.0, 0.0, 0, 0, Vector2(1, 0), 0.0, 0.0, 0, 0]
+point_count = 2
+
+[sub_resource type="CurveTexture" id="CurveTexture_mqm5w"]
+curve = SubResource("Curve_cbjl2")
+
+[sub_resource type="ParticleProcessMaterial" id="ParticleProcessMaterial_ppc2o"]
+particle_flag_disable_z = true
+direction = Vector3(-1, 0, 0)
+spread = 180.0
+initial_velocity_min = 20.0
+initial_velocity_max = 20.0
+gravity = Vector3(0, 0, 0)
+scale_min = 3.0
+scale_max = 5.0
+scale_curve = SubResource("CurveTexture_mqm5w")
+alpha_curve = SubResource("CurveTexture_iq806")
+
+[sub_resource type="CapsuleShape2D" id="CapsuleShape2D_3olw7"]
+radius = 6.0
+height = 118.0
+
+[node name="LightGun" instance=ExtResource("1_kwotu")]
+script = ExtResource("2_jid6s")
+allColor = SubResource("GradientTexture1D_aqmnp")
+displayName = "空灵长枪"
+autoSpawnAnimation = true
+freeAfterSpawn = true
+
+[node name="animator" parent="texture" index="0"]
+libraries = {
+"": SubResource("AnimationLibrary_d5b1d")
+}
+
+[node name="track" type="Node2D" parent="texture" index="1"]
+unique_name_in_owner = true
+material = SubResource("ShaderMaterial_sjtia")
+script = ExtResource("3_or7kk")
+size = Vector2(2000, 10)
+
+[node name="sword" type="Sprite2D" parent="texture" index="2"]
+unique_name_in_owner = true
+position = Vector2(-1000, 0)
+texture = ExtResource("5_bepne")
+
+[node name="points" type="GPUParticles2D" parent="texture/sword" index="0"]
+unique_name_in_owner = true
+z_index = -1
+position = Vector2(-55, 0)
+amount = 50
+process_material = SubResource("ParticleProcessMaterial_ppc2o")
+
+[node name="hitbox" parent="." index="1"]
+position = Vector2(-1000, 0)
+rotation = 1.5708
+shape = SubResource("CapsuleShape2D_3olw7")

components/Characters/Bear.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=29 format=3 uid="uid://m60bwhdpbem8"]
+[gd_scene load_steps=30 format=3 uid="uid://m60bwhdpbem8"]
 
 [ext_resource type="PackedScene" uid="uid://cvogxi7mktumf" path="res://components/Abstracts/EntityBase.tscn" id="1_3ves7"]
 [ext_resource type="Script" path="res://scripts/Contents/Characters/Bear.gd" id="2_kh2af"]
@@ -14,6 +14,7 @@
 [ext_resource type="AudioStream" uid="uid://ce8xjsh68momv" path="res://resources/sounds/bossAttack/Bear/Arrow7-2.ogg" id="7_0r2df"]
 [ext_resource type="Texture2D" uid="uid://cli2fyulk3dsg" path="res://resources/characters/bear/bear-walk-f.svg" id="7_f0c6w"]
 [ext_resource type="Texture2D" uid="uid://dadi3ud01bqxk" path="res://resources/characters/bear/bear-walk-g.svg" id="8_4c7bp"]
+[ext_resource type="AudioStream" uid="uid://dd18jfva1knwm" path="res://resources/sounds/bossAttack/Bear/LightGun.ogg" id="8_qagkm"]
 [ext_resource type="Texture2D" uid="uid://017nthmejh3g" path="res://resources/characters/bear/bear-walk-h.svg" id="9_bcby1"]
 
 [sub_resource type="SpriteFrames" id="SpriteFrames_6tgxs"]
@@ -127,6 +128,9 @@ stream = ExtResource("6_x3jmu")
 [node name="attack4" type="AudioStreamPlayer2D" parent="sounds" index="9"]
 stream = ExtResource("7_0r2df")
 
+[node name="attack5" type="AudioStreamPlayer2D" parent="sounds" index="10"]
+stream = ExtResource("8_qagkm")
+
 [node name="texture" parent="." index="2"]
 position = Vector2(0, -80)
 sprite_frames = SubResource("SpriteFrames_6tgxs")

resources/sounds/bossAttack/Bear/LightGun.ogg.import

@@ -0,0 +1,19 @@
+[remap]
+
+importer="oggvorbisstr"
+type="AudioStreamOggVorbis"
+uid="uid://dd18jfva1knwm"
+path="res://.godot/imported/LightGun.ogg-0454fa522dc5c679f52b5e6b5334e763.oggvorbisstr"
+
+[deps]
+
+source_file="res://resources/sounds/bossAttack/Bear/LightGun.ogg"
+dest_files=["res://.godot/imported/LightGun.ogg-0454fa522dc5c679f52b5e6b5334e763.oggvorbisstr"]
+
+[params]
+
+loop=false
+loop_offset=0
+bpm=0
+beat_count=0
+bar_beats=4

scripts/Contents/Bullets/BossAttack/Bear/LightGun.gd

@@ -0,0 +1,22 @@
+extends BulletBase
+
+@export var allColor: GradientTexture1D = null
+
+@onready var track: Node2D = $"%track"
+@onready var sword: Sprite2D = $"%sword"
+@onready var points: GPUParticles2D = $"%points"
+
+var myColor: Color
+func register():
+	speed = 1
+	damage = 5
+	penerate = 1
+func spawn():
+	myColor = allColor.gradient.sample(randf())
+	track.material = track.material.duplicate()
+	points.process_material = points.process_material.duplicate()
+	setColor(myColor)
+func setColor(color: Color):
+	track.material.set_shader_parameter("color", color)
+	sword.modulate = color
+	points.process_material.color = color

scripts/Contents/Characters/Bear.gd

@@ -11,6 +11,7 @@ func register():
 	attackCooldownMap[2] = 8000
 	attackCooldownMap[3] = 13000
 	attackCooldownMap[4] = 4500
+	attackCooldownMap[5] = 5500
 	sprintMultiplier = 60
 func spawn():
 	texture.play("walk")
@@ -18,6 +19,7 @@ func ai():
 	PresetEntityAI.follow(self, currentFocusedBoss, 200)
 	for i in len(attackCooldownMap.keys()):
 		tryAttack(i)
+	# tryAttack(5)
 func attack(type):
 	var weaponPos = findWeaponAnchor("normal")
 	if type == 0:
@@ -57,6 +59,15 @@ func attack(type):
 				bullet.tracer = currentFocusedBoss
 			await TickTool.millseconds(830.0 / count)
 		return false
+	elif type == 5:
+		var target = currentFocusedBoss.position
+		var count = randi_range(10, 15)
+		for i in range(count):
+			for bullet in BulletBase.generate(preload("res://components/Bullets/BossAttack/Bear/LightGun.tscn"), self, target, 0):
+				bullet.position += Vector2.from_angle(deg_to_rad(360.0 / count * i)) * 1000
+				bullet.rotation = bullet.position.angle_to_point(target)
+			await TickTool.millseconds(1670.0 / count)
+		return false
 	return true
 func sprint():
 	move(Vector2(sign((currentFocusedBoss.position - position).x * sprintMultiplier), 0), true)

shaders/LightTrack.gdshader

@@ -0,0 +1,9 @@
+shader_type canvas_item;
+uniform vec4 color:source_color;
+void fragment() {
+	vec2 center=vec2(UV.x,0.5);
+	float maxDist=0.5;
+	float dist=distance(UV,center);
+	COLOR=color;
+	COLOR.a*=(maxDist-dist)/maxDist;
+}