模仿雷电的小游戏，可以使用操作杆，很简单，但是很好玩-Mimic lightning game, you can use the joystick, it is simple, but fun

横板滚屏射击游戏 主要是粒子效果的实现,背景图层的滚动和虚拟操作杆的实现-Horizontal plate scrolling shooter is to achieve particle effects, to achieve scrolling background layer and virtual operating rod