feat(人物): 添加新角色cy的图片资源

fix(战斗): 调整Cat攻击伤害值从0.2降至0.01
refactor(动画): 简化EntityBase的受伤动画实现
perf(子弹): 优化ChickSprint伤害计算使用浮点数除法

scripts/Contents/Bullets/ChickSprint.gd

@@ -7,7 +7,7 @@ func register():
 	speed = 0
 	penerate = 1
 func ai():
-	baseDamage = launcher.velocity.length() / 500 * atk
+	baseDamage = launcher.velocity.length() / 500.0 * atk
 	PresetBulletAI.lockLauncher(self, launcher, true)
 	if !launcher.sprinting:
 		tryDestroy()