仿照doodle jump写的一个小游戏
上：跳以西 下：发射子弹 左：向左移动 右：向右移动
火箭背包：快速飞行 毒药：左右键呼唤，按左往右移动，按右往左移动 盾：抵挡一次怪物或boss的子弹的攻击伤害
滑动砖块，跳一次就会消失的砖块，固定砖块
A game similar to Doodle Jump as a practice
UP: Jump DOWN: Fire LEFT: Move left RIGHT: Move right
Jetpack: flying very fast Poison: change the LEFT and RIGHT, which means when you type LEFT, the player will go to right, vice and versa. Shield: protect the player from enemy or boss bullet only one time.
Sliding board, board disappered when jump on it once, solid board