feat(角色): 添加熊boss的新攻击方式和音效

添加熊boss的四种攻击方式：
1. 箭雨攻击(ArrowSeven)
2. 太阳舞攻击(SunDance)
3. 永恒彩虹攻击(ForeverRainbow)
4. 冲刺攻击(BearSprint)

新增对应攻击音效资源
调整子弹追踪和伤害计算逻辑
添加冲刺粒子特效

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

@@ -27,10 +27,10 @@ func ai():
 	if timeLived() <= forwardTime:
 		speed = 10 * ((forwardTime - timeLived()) / forwardTime)
 	elif forwarded:
-		if timeLived() < forwardTime + 1000:
+		if timeLived() < forwardTime + 2000:
 			speed = clamp((timeLived() - forwardTime) / 75, 0, 30)
 			if is_instance_valid(tracer):
-				PresetBulletAI.trace(self, tracer.position, 0.1)
+				PresetBulletAI.trace(self, tracer.position, 0.03)
 	else:
 		forwarded = true
 

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

@@ -0,0 +1,20 @@
+extends BulletBase
+
+@export var allColor: GradientTexture1D = null
+
+var myColor: Color
+
+func register():
+	damage = 5
+	penerate = 1
+func spawn():
+	myColor = allColor.gradient.sample(randf())
+	setColor(myColor)
+
+func ai():
+	speed = (11000 - timeLived()) / 11000 * initialSpeed
+	rotation_degrees += speed / 10
+	PresetBulletAI.forward(self, rotation)
+
+func setColor(color: Color):
+	texture.modulate = color

scripts/Contents/Bullets/ChickSprint.gd

@@ -5,10 +5,10 @@ func register():
 	speed = 0
 	penerate = 1
 func ai():
-	damage = launcher.velocity.length()
+	damage = launcher.velocity.length() / 300
 	PresetBulletAI.lockLauncher(self, launcher, true)
 	if !launcher.sprinting:
 		tryDestroy()
 func destroy(beacuseMap: bool):
 	if beacuseMap:
-		launcher.takeDamage(self, 0.5)
+		launcher.takeDamage(self, MathTool.rate(0.5))

scripts/Contents/Characters/Bear.gd

@@ -1,23 +1,45 @@
 extends EntityBase
 class_name Bear # 攻击方式模仿泰拉瑞亚光之女皇
 
+@onready var sprintParticle: GPUParticles2D = $"%sprintParticle"
+
 func register():
 	fields[FieldStore.Entity.MAX_HEALTH] = 2000
 	fields[FieldStore.Entity.MOVEMENT_SPEED] = 0.25
-	attackCooldownMap[0] = 100
-	attackCooldownMap[1] = 100
+	attackCooldownMap[0] = 3000
+	attackCooldownMap[1] = 10000
+	attackCooldownMap[2] = 8000
+	attackCooldownMap[3] = 13000
+	sprintMultiplier = 120
 func spawn():
 	texture.play("walk")
 func ai():
 	PresetEntityAI.follow(self, currentFocusedBoss, 0)
-	tryAttack(0)
-	tryAttack(1)
+	for i in range(4):
+		tryAttack(i)
 func attack(type):
 	var weaponPos = findWeaponAnchor("normal")
 	if type == 0:
-		for bullet in BulletBase.generate(preload("res://components/Bullets/BossAttack/Bear/ArrowSeven.tscn"), self, weaponPos, deg_to_rad(randf_range(0, 360))):
-			bullet.tracer = currentFocusedBoss
+		for i in range(20):
+			for bullet in BulletBase.generate(preload("res://components/Bullets/BossAttack/Bear/ArrowSeven.tscn"), self, weaponPos, deg_to_rad(randf_range(0, 360))):
+				bullet.tracer = currentFocusedBoss
 	elif type == 1:
-		for bullet in BulletBase.generate(preload("res://components/Bullets/BossAttack/Bear/SunDance.tscn"), self, weaponPos, deg_to_rad(randf_range(0, 360))):
-			bullet.damage = 1
+		await sprintTo(currentFocusedBoss.position - Vector2(200, 200), 0.25)
+		for i in range(6):
+			BulletBase.generate(preload("res://components/Bullets/BossAttack/Bear/SunDance.tscn"), self, weaponPos, deg_to_rad(randf_range(0, 360)))
+	elif type == 2:
+		for i in range(13):
+			for bullet in BulletBase.generate(preload("res://components/Bullets/BossAttack/Bear/ForeverRainbow.tscn"), self, weaponPos, 0):
+				bullet.rotation = 360 / 13.0 * i
+	elif type == 3:
+		await sprintTo(currentFocusedBoss.position - Vector2(500, 0), 0.25)
+		sprintParticle.emitting = true
+		canRunAi = false
+		await TickTool.millseconds(1500)
+		BulletBase.generate(preload("res://components/Bullets/BearSprint.tscn"), self, weaponPos, 0)
+		await trySprint()
+		sprintParticle.emitting = false
+		canRunAi = true
 	return true
+func sprint():
+	move((currentFocusedBoss.position - position).normalized() * sprintMultiplier * Vector2(1, 0), true)