seed-engine

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A Lightweight 2D game engine using WebGL2. The engine is designed on the focus of creating a bridge between creating and publishing games to the Seed Network as modules.

github.com/JaegarSarauer/SeedGameEngine

JaegarSarauer/SeedGameEngine

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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <base data-ice="baseUrl" href="../../../"> <title data-ice="title">src/manager/InputManager.js | seed-engine</title> <link type="text/css" rel="stylesheet" href="css/style.css"> <link type="text/css" rel="stylesheet" href="css/prettify-tomorrow.css"> <script src="script/prettify/prettify.js"></script> <script src="script/manual.js"></script> <meta name="description" content="A Lightweight 2D game engine using WebGL2. The engine is designed on the focus of creating a bridge between creating and publishing games to the Seed Network as modules."><meta property="twitter:card" content="summary"><meta property="twitter:title" content="seed-engine"><meta property="twitter:description" content="A Lightweight 2D game engine using WebGL2. 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Components should use the * `is` functions to determine if a specific character is down for that game tick. * * If you want to listen to all characters, for example a textbox input, use events instead. To listen to events, * use InputManager.events to access the event. Events are defined in InputManager.EVENT. See Messager.js for more info * on listening to events. */ export class _InputManager extends Manager { /** * Constructor. Initializes Messager, event definitons, and * key and mouse states. */ constructor() { super(); this.events = new Messager(); this.EVENT = { LEFT_PRESSED: 'mouseLeftPressed', LEFT_RELEASED: 'mouseLeftReleased', RIGHT_PRESSED: 'mouseRightPressed', RIGHT_RELEASED: 'mouseRightReleased', MOUSE_MOVE: 'mouseMove', KEY_DOWN: 'keyDown', KEY_UP: 'keyUp', KEY: 'keyDownRepeat', }; this.KEY_DOWN = []; this.KEY_PRESSED = []; this.KEY_UP = []; this.LEFT_PRESSED = []; this.LEFT_RELEASED = []; this.RIGHT_PRESSED = []; this.RIGHT_RELEASED = []; const AllKeys = 256; for (let i = 0; i < AllKeys; i++) { this.KEY_DOWN[i] = false; this.KEY_PRESSED[i] = false; this.KEY_UP[i] = false; } } /** * Returns true if the key represented by this KeyCode is pressed down on * this game tick. Does not repeat each game tick. Must be released to re-trigger. * The `isKeyPressed()` will also return true when this function does. * * @param {KeyCode} KeyCode Keycode enum which represents a character by number. * * @returns {boolean} Is this key down. */ isKeyDown(KeyCode) { return this.KEY_DOWN[KeyCode]; } /** * Returns true if the key represented by this KeyCode is held down on * this game tick. Repeats each game tick it is held down. * * @param {KeyCode} KeyCode Keycode enum which represents a character by number. * * @returns {boolean} Is this key pressed (held down). */ isKeyPressed(KeyCode) { return this.KEY_PRESSED[KeyCode]; } /** * Returns true if the key represented by this KeyCode is released on * this game tick. * * @param {KeyCode} KeyCode Keycode enum which represents a character by number. * * @returns {boolean} Is this key released. */ isKeyUp(KeyCode) { return this.KEY_UP[KeyCode]; } /** * Called by the EngineManager. Not intended to be referenced. * Sets up event listeners on the DOM. */ start() { DOMManager.canvas.addEventListener('mouseup', (ev) => { ev.preventDefault(); let event = { x: ev.offsetX * DOMManager.canvasDPIWidth, y: ev.offsetY * DOMManager.canvasDPIHeight, shiftHeld: ev.shiftKey, ctrlHeld: ev.ctrlKey, }; let curScene = SceneManager.getCurrentScene(); if (curScene != null) { for (let i = 0; i < curScene.viewports.length; i++) { if (curScene.viewports[i].getBounds().isInBounds(new Point(event.x, event.y))) { let relEvent = Object.assign({}, event); relEvent.x -= curScene.viewports[i].getBounds().p1.x; relEvent.y -= curScene.viewports[i].getBounds().p1.y; if (ev.button == 0) { this.LEFT_RELEASED[i].push(relEvent); } else if (ev.button == 2) { this.RIGHT_RELEASED[i].push(relEvent); } } } } if (ev.button == 0) { this.events.set(this.EVENT.LEFT_RELEASED, event); } else if (ev.button == 2) { this.events.set(this.EVENT.RIGHT_RELEASED, event); } }) DOMManager.canvas.addEventListener('mousedown', (ev) => { ev.preventDefault(); let event = { x: ev.offsetX * DOMManager.canvasDPIWidth, y: ev.offsetY * DOMManager.canvasDPIHeight, shiftHeld: ev.shiftKey, ctrlHeld: ev.ctrlKey, }; let curScene = SceneManager.getCurrentScene(); if (curScene != null) { for (let i = 0; i < curScene.viewports.length; i++) { if (curScene.viewports[i].getBounds().isInBounds(new Point(event.x, event.y))) { let relEvent = Object.assign({}, event); relEvent.x -= curScene.viewports[i].getBounds().p1.x; relEvent.y -= curScene.viewports[i].getBounds().p1.y; if (ev.button == 0) { this.LEFT_PRESSED[i].push(relEvent); } else if (ev.button == 2) { this.RIGHT_PRESSED[i].push(relEvent); } } } } if (ev.button == 0) { this.events.set(this.EVENT.LEFT_PRESSED, event); } else if (ev.button == 2) { this.events.set(this.EVENT.RIGHT_PRESSED, event); } }) DOMManager.canvas.addEventListener('mousemove', (ev) => { ev.preventDefault(); let event = { x: ev.offsetX * DOMManager.canvasDPIWidth, y: ev.offsetY * DOMManager.canvasDPIHeight, shiftHeld: ev.shiftKey, ctrlHeld: ev.ctrlKey, }; let curScene = SceneManager.getCurrentScene(); if (curScene != null) { for (let i = 0; i < curScene.viewports.length; i++) { if (curScene.viewports[i].getBounds().isInBounds(new Point(event.x, event.y))) { event.x -= curScene.viewports[i].getBounds().p1.x; event.y -= curScene.viewports[i].getBounds().p1.y; event.viewport = i; break; } } } this.events.set(this.EVENT.MOUSE_MOVE, event); }) //right click manager DOMManager.canvas.oncontextmenu = (ev) => { ev.preventDefault(); }; //Key down manager document.addEventListener('keydown', (event) => { event.preventDefault(); let code = event.which || event.keyCode; this.KEY_PRESSED[code] = true; if (!event.repeat) { this.KEY_DOWN[code] = true; this.events.set(this.EVENT.KEY_DOWN, { key: event.key, code, shiftHeld: event.shiftKey, ctrlHeld: event.ctrlKey, repeat: event.repeat, }); } this.events.set(this.EVENT.KEY, { key: event.key, code, shiftHeld: event.shiftKey, ctrlHeld: event.ctrlKey, repeat: event.repeat, }); }); //Key up manager document.addEventListener('keyup', (event) => { event.preventDefault(); let code = event.which || event.keyCode; this.KEY_DOWN[code] = false; this.KEY_PRESSED[code] = false; this.KEY_UP[code] = true; this.events.set(this.EVENT.KEY_UP, { key: event.key, code, shiftHeld: event.shiftKey, ctrlHeld: event.ctrlKey, repeat: event.repeat, }); }); } /** * Managed by the EngineManager. Do not call directly. Updates character and mouse * inputs. */ update() { this.KEY_DOWN = []; this.KEY_UP = []; this.LEFT_PRESSED = []; this.LEFT_RELEASED = []; this.RIGHT_PRESSED = []; this.RIGHT_RELEASED = []; let scene = null; if ((scene = SceneManager.getCurrentScene()) == null) return; for (let i = 0; i < scene.viewports.length; i++) { this.LEFT_PRESSED.push([]); this.LEFT_RELEASED.push([]); this.RIGHT_PRESSED.push([]); this.RIGHT_RELEASED.push([]); } } } /** * Singleton reference to the Input Manager. */ const InputManager = new _InputManager(); export default InputManager;</code></pre> </div> <footer class="footer"> Generated by <a href="https://esdoc.org">ESDoc(1.1.0)<img src="./image/esdoc-logo-mini-black.png"></a> </footer> <script src="script/search_index.js"></script> <script src="script/search.js"></script> <script src="script/pretty-print.js"></script> <script src="script/inherited-summary.js"></script> <script src="script/test-summary.js"></script> <script src="script/inner-link.js"></script> <script src="script/patch-for-local.js"></script> </body> </html>