100 lines
2.4 KiB
JavaScript
100 lines
2.4 KiB
JavaScript
import {DEFAULT_KEYPRESS_DELAY, Z} from './constants.js?v=20';
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const input = {};
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let lastKeypressTime = 0;
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let clickQueue = [];
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let canvasEl = null;
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let pointerX = 0, pointerY = 0;
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let isPointerDown = false;
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document.addEventListener('keydown', (e) => {input[e.key] = true; e.preventDefault()});
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document.addEventListener('keyup', (e) => {input[e.key] = false; e.preventDefault()});
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export function key(key) {
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return input[key]
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}
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export function afterKeyDelay(amount=DEFAULT_KEYPRESS_DELAY) {
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const now = Date.now();
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if (now - lastKeypressTime >= amount) {
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lastKeypressTime = now;
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return true;
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}
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}
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export function getPointer() {
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return {x: pointerX, y: pointerY};
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}
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export function isPointerPressed() {
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return isPointerDown;
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}
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export function initClickCanvas(canvas) {
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canvasEl = canvas;
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canvas.addEventListener('click', handleClick);
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canvas.addEventListener('touchstart', handleTouchStart, {passive: false});
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canvas.addEventListener('touchmove', handleTouchMove, {passive: false});
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canvas.addEventListener('touchend', handleTouchEnd, {passive: false});
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canvas.addEventListener('mousemove', handleMouseMove);
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canvas.addEventListener('mousedown', handleMouseDown);
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canvas.addEventListener('mouseup', handleMouseUp);
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}
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function getCanvasPos(clientX, clientY) {
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const rect = canvasEl.getBoundingClientRect();
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return {
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x: (clientX - rect.left) / Z,
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y: (clientY - rect.top) / Z,
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};
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}
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function handleClick(e) {
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const {x, y} = getCanvasPos(e.clientX, e.clientY);
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clickQueue.push({x, y});
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}
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function handleTouchStart(e) {
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e.preventDefault();
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const touch = e.changedTouches[0];
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const {x, y} = getCanvasPos(touch.clientX, touch.clientY);
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clickQueue.push({x, y});
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pointerX = x;
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pointerY = y;
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isPointerDown = true;
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}
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function handleTouchMove(e) {
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e.preventDefault();
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const touch = e.changedTouches[0];
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const {x, y} = getCanvasPos(touch.clientX, touch.clientY);
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pointerX = x;
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pointerY = y;
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}
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function handleTouchEnd(e) {
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e.preventDefault();
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isPointerDown = false;
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}
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function handleMouseMove(e) {
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const {x, y} = getCanvasPos(e.clientX, e.clientY);
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pointerX = x;
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pointerY = y;
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}
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function handleMouseDown(e) {
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const {x, y} = getCanvasPos(e.clientX, e.clientY);
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pointerX = x;
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pointerY = y;
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isPointerDown = true;
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}
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function handleMouseUp(e) {
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isPointerDown = false;
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}
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export function popClick() {
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return clickQueue.shift() || null;
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}
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