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18 lines
460 B
18 lines
460 B
2 years ago
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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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}
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