Replaced deprecated keyCode functionality and docs with KeyboardEvent.code & KeyboardEvent.key also updates the keyIsDown function to accept alphanumerics as parameters

src/core/constants.js

@@ -879,92 +879,104 @@ export const MITER = 'miter';
  * @final
  */
 export const AUTO = 'auto';
-
+// INPUT
 /**
- * @typedef {18} ALT
+ * @typedef {'AltLeft' | 'AltRight'} ALT
  * @property {ALT} ALT
  * @final
  */
-// INPUT
-export const ALT = 18;
+export const ALT = 'AltLeft';
+
 /**
- * @typedef {8} BACKSPACE
+ * @typedef {'Backspace'} BACKSPACE
  * @property {BACKSPACE} BACKSPACE
  * @final
  */
-export const BACKSPACE = 8;
+export const BACKSPACE = 'Backspace';
+
 /**
- * @typedef {17} CONTROL
+ * @typedef {'ControlLeft' | 'ControlRight'} CONTROL
  * @property {CONTROL} CONTROL
  * @final
  */
-export const CONTROL = 17;
+export const CONTROL = 'ControlLeft';
+
 /**
- * @typedef {46} DELETE
+ * @typedef {'Delete'} DELETE
  * @property {DELETE} DELETE
  * @final
  */
-export const DELETE = 46;
+export const DELETE = 'Delete';
+
 /**
- * @typedef {40} DOWN_ARROW
+ * @typedef {'ArrowDown'} DOWN_ARROW
  * @property {DOWN_ARROW} DOWN_ARROW
  * @final
  */
-export const DOWN_ARROW = 40;
+export const DOWN_ARROW = 'ArrowDown';
+
 /**
- * @typedef {13} ENTER
+ * @typedef {'Enter'} ENTER
  * @property {ENTER} ENTER
  * @final
  */
-export const ENTER = 13;
+export const ENTER = 'Enter';
+
 /**
- * @typedef {27} ESCAPE
+ * @typedef {'Escape'} ESCAPE
  * @property {ESCAPE} ESCAPE
  * @final
  */
-export const ESCAPE = 27;
+export const ESCAPE = 'Escape';
+
 /**
- * @typedef {37} LEFT_ARROW
+ * @typedef {'ArrowLeft'} LEFT_ARROW
  * @property {LEFT_ARROW} LEFT_ARROW
  * @final
  */
-export const LEFT_ARROW = 37;
+export const LEFT_ARROW = 'ArrowLeft';
+
 /**
- * @typedef {18} OPTION
+ * @typedef {'AltLeft' | 'AltRight'} OPTION
  * @property {OPTION} OPTION
  * @final
  */
-export const OPTION = 18;
+export const OPTION = 'AltLeft';
+
 /**
- * @typedef {13} RETURN
+ * @typedef {'Enter'} RETURN
  * @property {RETURN} RETURN
  * @final
  */
-export const RETURN = 13;
+export const RETURN = 'Enter';
+
 /**
- * @typedef {39} RIGHT_ARROW
+ * @typedef {'ArrowRight'} RIGHT_ARROW
  * @property {RIGHT_ARROW} RIGHT_ARROW
  * @final
  */
-export const RIGHT_ARROW = 39;
+export const RIGHT_ARROW = 'ArrowRight';
+
 /**
- * @typedef {16} SHIFT
+ * @typedef {'ShiftLeft' | 'ShiftRight'} SHIFT
  * @property {SHIFT} SHIFT
  * @final
  */
-export const SHIFT = 16;
+export const SHIFT = 'ShiftLeft';
+
 /**
- * @typedef {9} TAB
+ * @typedef {'Tab'} TAB
  * @property {TAB} TAB
  * @final
  */
-export const TAB = 9;
+export const TAB = 'Tab';
+
 /**
- * @typedef {38} UP_ARROW
+ * @typedef {'ArrowUp'} UP_ARROW
  * @property {UP_ARROW} UP_ARROW
  * @final
  */
-export const UP_ARROW = 38;
+export const UP_ARROW = 'ArrowUp';
 
 // RENDERING
 /**

src/core/main.js

@@ -422,6 +422,7 @@ class p5 {
 
     this._styles = [];
     this._downKeys = {}; //Holds the key codes of currently pressed keys
+    this._downKeyCodes = {};
   }
 }
 

src/events/keyboard.js

@@ -4,7 +4,21 @@
  * @for p5
  * @requires core
  */
-
+export function isCode(input) {
+  const leftRightKeys = [
+    'Alt',
+    'Shift',
+    'Control',
+    'Meta',
+  ];
+  if (leftRightKeys.includes(input)) {
+    return false;
+  }
+  if (typeof input !== 'string') {
+    return false;
+  }
+  return input.length > 1;
+}
 function keyboard(p5, fn){
   /**
    * A `Boolean` system variable that's `true` if any key is currently pressed
@@ -95,7 +109,9 @@ function keyboard(p5, fn){
    * </code>
    * </div>
    */
+
   fn.keyIsPressed = false;
+  fn.code = null;
 
   /**
    * A `String` system variable that contains the value of the last key typed.
@@ -439,23 +455,16 @@ function keyboard(p5, fn){
    * </div>
    */
   fn._onkeydown = function(e) {
-    if (e.repeat) {
-      // Ignore repeated key events when holding down a key
+    if (this._downKeys[e.code]) {
       return;
     }
 
     this.keyIsPressed = true;
     this.keyCode = e.which;
-    this._downKeys[e.which] = true;
-    this.key = e.key || String.fromCharCode(e.which) || e.which;
-
-    // Track keys pressed with meta key
-    if (e.metaKey) {
-      if (!this._metaKeys) {
-        this._metaKeys = [];
-      }
-      this._metaKeys.push(e.which);
-    }
+    this.key = e.key;
+    this.code = e.code;
+    this._downKeyCodes[e.code] = true;
+    this._downKeys[e.key] = true;
 
     const context = this._isGlobal ? window : this;
     if (typeof context.keyPressed === 'function' && !e.charCode) {
@@ -623,18 +632,20 @@ function keyboard(p5, fn){
    * </div>
    */
   fn._onkeyup = function(e) {
-    this._downKeys[e.which] = false;
-    this.keyIsPressed = false;
-    this._lastKeyCodeTyped = null;
+    delete this._downKeyCodes[e.code];
+    delete this._downKeys[e.key];
 
-    if (e.key === 'Meta') { // Meta key codes
-      // When meta key is released, clear all keys pressed with it
-      if (this._metaKeys) {
-        this._metaKeys.forEach(key => {
-          this._downKeys[key] = false;
-        });
-        this._metaKeys = [];
-      }
+
+    if (!this._areDownKeys()) {
+      this.keyIsPressed = false;
+      this.key = '';
+      this.code = null;
+    } else {
+      // If other keys are still pressed, update code to the last pressed key
+      const lastPressedCode = Object.keys(this._downKeyCodes).pop();
+      this.code = lastPressedCode;
+      const lastPressedKey = Object.keys(this._downKeys).pop();
+      this.key = lastPressedKey;
     }
 
     const context = this._isGlobal ? window : this;
@@ -821,7 +832,7 @@ function keyboard(p5, fn){
    * <a href="https://keycode.info" target="_blank">keycode.info</a>.
    *
    * @method keyIsDown
-   * @param {Number}          code key to check.
+   * @param {Number|String}   code key to check.
    * @return {Boolean}        whether the key is down or not.
    *
    * @example
@@ -913,11 +924,14 @@ function keyboard(p5, fn){
    * </code>
    * </div>
    */
-  fn.keyIsDown = function(code) {
-    // p5._validateParameters('keyIsDown', arguments);
-    return this._downKeys[code] || false;
-  };
 
+  fn.keyIsDown = function(input) {
+    if (isCode(input)) {
+      return this._downKeyCodes[input] || this._downKeys[input] || false;
+    } else {
+      return this._downKeys[input] || this._downKeyCodes[input] || false;
+    }
+  }
   /**
    * The _areDownKeys function returns a boolean true if any keys pressed
    * and a false if no keys are currently pressed.

test/unit/events/keyboard.js

@@ -1,4 +1,5 @@
 import p5 from '../../../src/app.js';
+import { isCode } from '../../../src/events/keyboard.js';
 import { parallelSketches } from '../../js/p5_helpers';
 
 suite('Keyboard Events', function() {
@@ -164,18 +165,68 @@ suite('Keyboard Events', function() {
     });
   });
 
+  suite('isCode', function() {
+    test('returns false for non-string inputs', function() {
+      assert.isFalse(isCode(null));
+      assert.isFalse(isCode(undefined));
+      assert.isFalse(isCode(123));
+      assert.isFalse(isCode({}));
+      assert.isFalse(isCode([]));
+    });
+
+    test('returns false for single non-digit and digit characters', function() {
+      assert.isFalse(isCode('a'));
+      assert.isFalse(isCode('Z'));
+      assert.isFalse(isCode('1'));
+      assert.isFalse(isCode('2'));
+      assert.isFalse(isCode(' '));
+    });
+
+    test('returns true for multi-character strings', function() {
+      assert.isTrue(isCode('ShiftLeft'));
+      assert.isTrue(isCode('ArrowUp'));
+      assert.isTrue(isCode('ab'));
+    });
+
+    test('returns false/true for apppropriate leftright keys and codes', function() {
+      assert.isFalse(isCode('Alt'));
+      assert.isFalse(isCode('Shift'));
+      assert.isTrue(isCode('AltLeft'));
+      assert.isTrue(isCode('ShiftLeft'));
+    });
+
+    test('handles edge cases correctly', function() {
+      assert.isFalse(isCode(''));  // empty string
+      assert.isTrue(isCode('11')); // multi-digit number
+      assert.isTrue(isCode('1a')); // digit + letter
+    });
+  });
+
   suite('p5.prototype.keyIsDown', function() {
     test('keyIsDown should return a boolean', function() {
-      assert.isBoolean(myp5.keyIsDown(65));
+      assert.isBoolean(myp5.keyIsDown('a'));
+      assert.isBoolean(myp5.keyIsDown('Enter'));
     });
 
     test('keyIsDown should return true if key is down', function() {
-      window.dispatchEvent(new KeyboardEvent('keydown', { keyCode: 35 }));
-      assert.strictEqual(myp5.keyIsDown(35), true);
-    });
-
-    test.todo('keyIsDown should return false if key is not down', function() {
-      assert.strictEqual(myp5.keyIsDown(35), false);
+      // Test single character keys
+      window.dispatchEvent(new KeyboardEvent('keydown', { key: 'a' }));
+      assert.strictEqual(myp5.keyIsDown('a'), true);
+
+      // Test digit keys
+      window.dispatchEvent(new KeyboardEvent('keydown', { key: '1', code: 'Digit1' }));
+      assert.strictEqual(myp5.keyIsDown('1'), true);
+
+      // Test special keys
+      window.dispatchEvent(new KeyboardEvent('keydown', { key: 'Enter', code: 'Enter' }));
+      assert.strictEqual(myp5.keyIsDown('Enter'), true);
+    });
+
+    test('keyIsDown should return false if key is not down', function() {
+      // Ensure key is not down
+      window.dispatchEvent(new KeyboardEvent('keyup'));
+      assert.strictEqual(myp5.keyIsDown('z'), false);
+
     });
   });
 });