function keyMove(key, direction, layer, center) { const Precision = 5 switch (key) { case "w": if (direction[1] < 2) { direction[1] += 0.2 } if (direction[0] > 0) { direction[0] -= 0.1 } else if (direction[0] < 0) { direction[0] += 0.1 } else if (Math.abs(direction[0]) <= 0.1) { direction[0] = 0 } if (layer.r % 360 < 90) { layer.rotate(Precision, center) layer.r += Precision } else if (layer.r % 360 > 90) { layer.rotate(-Precision, center) layer.r -= Precision } break case "s": if (direction[1] > -2) { direction[1] -= 0.2 } if (direction[0] > 0) { direction[0] -= 0.1 } else if (direction[0] < 0) { direction[0] += 0.1 } else if (Math.abs(direction[0]) <= 0.1) { direction[0] = 0 } if (layer.r % 360 > 270) { layer.rotate(-Precision, center) layer.r -= Precision } else if (layer.r % 360 < 270) { layer.rotate(Precision, center) layer.r += Precision } break case "d": if (direction[0] > -2) { direction[0] -= 0.2 } if (direction[1] > 0) { direction[1] -= 0.1 } else if (direction[0] < 0) { direction[1] += 0.1 } else if (Math.abs(direction[1]) <= 0.1) { direction[1] = 0 } if (layer.r % 360 > 180) { layer.rotate(-Precision, center) layer.r -= Precision } else if (layer.r % 360 < 180) { layer.rotate(Precision, center) layer.r += Precision } break case "a": if (direction[0] < 2) { direction[0] += 0.2 } if (direction[1] > 0) { direction[1] -= 0.1 } else if (direction[0] < 0) { direction[1] += 0.1 } else if (Math.abs(direction[1]) <= 0.1) { direction[1] = 0 } if (layer.r % 360 > 0) { layer.rotate(-Precision, center) layer.r -= Precision } else if (layer.r % 360 < 0) { layer.rotate(Precision, center) layer.r += Precision } break } }