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18 lines
460 B
18 lines
460 B
export class Controller { |
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constructor($canvas) { |
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this.$canvas = $canvas; |
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this.press_keys = new Set(); |
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this.start(); |
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} |
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start() { // 自定义按键事件，保证按下一个键只存一次键值 |
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let outer = this; |
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this.$canvas.keydown(function(e) { |
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outer.press_keys.add(e.key); |
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}); |
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this.$canvas.keyup(function(e) { |
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outer.press_keys.delete(e.key); |
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}); |
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} |
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} |