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State machines also have a wide range of uses in game development, especially the logic writing of game AI. The main characters in the game have various states such as walking, attacking, defending, falling and jumping. These states are both interrelated and constrained. For example, if attacked during walking, it will switch from walking state to falling state. In the state of falling, it can neither attack nor defend. Similarly, you cannot switch to the defensive state during the jump, but you can attack. This kind of scenario is very suitable to be described by state machine. The code is as follows:此时，恰逢战友丁思甜（郝好饰）来信邀请他们去草原做客，二人欣然前往，哪知正赶上牧牛受惊。为寻找丢失的牧牛，三人和牧民老羊皮进入俗称阎王殿的百眼窟。在这里，竟有一些日本“给水部队”的遗迹，一座没有房间的怪楼，一个编号是“0”的地下室更可怕的是，两只全身白毛的黄皮子一直尾随着他们的故事。(to be continued)4 Right turn signal: left arm extends forward horizontally and right hand swings to left;你肩膀变烫了……徐风有些迷茫地说，但是下身的那个第一性征还是没有反应，其实……你有感觉的对吧？他的手试探行地摸了摸季木霖的后颈，然后又摸到了后背，都开始烫起来了。