feat(战斗系统): 为爆炸攻击添加内伤效果并重构内伤生成逻辑

- 在InfinitySword.gd中添加爆炸攻击时生成内伤球的功能
- 将内伤生成逻辑提取到InternalDamage.gd中的静态方法generateBall
- 移除Parrier.gd中重复的内伤生成代码，改用新的generateBall方法
- 更新Tree.tscn中的描述文本，添加对爆炸攻击产生内伤的说明
- 调整WeaponCardBase.tscn的UI布局，为描述文本添加滚动容器

scripts/Contents/Bullets/InfinitySword.gd

@@ -20,3 +20,4 @@ func hitBullet(bullet: BulletBase):
 	if !is_instance_valid(launcher): return
 	if BulletTool.canDamage(bullet, launcher):
 		baseDamage *= rate2 ** bullet.getDamage()
+		InternalDamageBullet.generateBall(launcher, bullet.launcher, sqrt(baseDamage))

scripts/Contents/Bullets/InternalDamage.gd

@@ -11,3 +11,16 @@ func spawn():
 				if bullet.motionType == BulletBase.MotionType.EXPLOSION:
 					hitbox.set_deferred("disabled", false)
 		)
+
+static func generateBall(by: EntityBase, who: EntityBase, atk: float):
+	var internalDamages = who.getOrCreateCycleTimer("internalDamages", 3000, 150)
+	for bullet in BulletBase.generate(
+		ComponentManager.getBullet("InternalDamage"),
+		by,
+		Vector2.ZERO,
+		0
+	):
+		if bullet is InternalDamageBullet:
+			bullet.baseDamage = atk
+			bullet.hoster = who
+			internalDamages.host(bullet)

scripts/Contents/Bullets/Parrier.gd

@@ -33,18 +33,6 @@ func generateParryBall(bDamage: float):
 		):
 			if b is ParryBallBullet:
 				b.atk = atk * bDamage
-func generateInternalDamage(by: EntityBase, who: EntityBase):
-	var internalDamages = who.getOrCreateCycleTimer("internalDamages", 3000, 150)
-	for bullet in BulletBase.generate(
-		ComponentManager.getBullet("InternalDamage"),
-		by,
-		Vector2.ZERO,
-		0
-	):
-		if bullet is InternalDamageBullet:
-			bullet.baseDamage = atk
-			bullet.hoster = who
-			internalDamages.host(bullet)
 
 func spawn():
 	var varians = randi_range(0, 1)
@@ -85,7 +73,7 @@ func hitBullet(bullet: BulletBase): # 当前子弹与其他子弹相撞
 					parryEffect(bullet)
 					bullet.hitbox.set_deferred("disabled", true)
 					generateParryBall(bullet.baseDamage)
-					generateInternalDamage(launcher, bullet.launcher)
+					InternalDamageBullet.generateBall(launcher, bullet.launcher, atk)
 				elif bullet.motionType == BulletBase.MotionType.STAB:
 					parryEffect(bullet)
 					penerateEffect(bullet.launcher, bullet.launcher.position * 1.01)
@@ -93,21 +81,25 @@ func hitBullet(bullet: BulletBase): # 当前子弹与其他子弹相撞
 					bullet.launcher.takeDamage(atk * reflectRate * bullet.getDamage())
 					bullet.launcher.impluse(Vector2.from_angle(bullet.rotation) * -2000)
 					generateParryBall(bullet.baseDamage)
-					generateInternalDamage(launcher, bullet.launcher)
+					InternalDamageBullet.generateBall(launcher, bullet.launcher, atk)
 				elif bullet.motionType == BulletBase.MotionType.SPRINT:
 					parryEffect(bullet)
 					bullet.tryDestroy()
 					bullet.launcher.velocity *= 0
 					generateParryBall(bullet.baseDamage)
-					generateInternalDamage(launcher, bullet.launcher)
+					InternalDamageBullet.generateBall(launcher, bullet.launcher, atk)
 				elif bullet.motionType == BulletBase.MotionType.BREATH:
 					penerateEffect(bullet.launcher, launcher.position)
 					bullet.launcher.impluse(Vector2.from_angle(bullet.rotation) * -500)
 				elif bullet.motionType == BulletBase.MotionType.SUMMON || bullet.motionType == BulletBase.MotionType.MAGIC:
 					penerateEffect(bullet.launcher, launcher.position)
 					launcher.storeEnergy(sqrt(bullet.baseDamage))
+				elif bullet.motionType == BulletBase.MotionType.EXPLOSION:
+					penerateEffect(bullet.launcher, launcher.position)
+					for i in 2:
+						InternalDamageBullet.generateBall(bullet.launcher, launcher, atk)
 			else:
-				generateInternalDamage(bullet.launcher, launcher)
+				InternalDamageBullet.generateBall(bullet.launcher, launcher, atk)
 
 func refract(_newBullet: BulletBase, _entity: EntityBase, _index: int, _total: int, _lastBullet: float):
 	return null