Javascript-Snake-Game/input.js at master · WebDevSimplified/Javascript-Snake-Game · GitHub

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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

}