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input.js
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input.js
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let inputDirection = { x: 0, y: 0 };
let lastInputDirection = { x: 0, y: 0 };
window.addEventListener('keydown', e => {
switch (e.key) {
case 'ArrowUp':
if (lastInputDirection.y !== 0) break;
inputDirection = { x: 0, y: -1 };
break;
case 'ArrowDown':
if (lastInputDirection.y !== 0) break;
inputDirection = { x: 0, y: 1 };
break;
case 'ArrowLeft':
if (lastInputDirection.x !== 0) break;
inputDirection = { x: -1, y: 0 };
break;
case 'ArrowRight':
if (lastInputDirection.x !== 0) break;
inputDirection = { x: 1, y: 0 };
break;
}});
export function getInputDirection() {
lastInputDirection = inputDirection;
return inputDirection;
}