Created
January 25, 2024 11:22
-
-
Save EteimZ/852b488ea522b2078418422a8f6cc070 to your computer and use it in GitHub Desktop.
Moving box in HTML5 canvas
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <title>Moving Box</title> | |
| </head> | |
| <body> | |
| <canvas id="draw"></canvas> | |
| </body> | |
| <script src="index.js"></script> | |
| </html> |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| const canvas = document.getElementById("draw"); | |
| const ctx = canvas.getContext("2d"); | |
| // Define canvas properties | |
| canvas.style.border = "1px solid black"; | |
| canvas.width = 800; | |
| canvas.height = 600; | |
| // Set initial position of rectangle | |
| let x = 10; | |
| let y = 10; | |
| // Listen for keyboard events | |
| document.addEventListener("keydown", function (event) { | |
| switch (event.key) { | |
| case "ArrowLeft": | |
| console.log("Move box left"); | |
| x -= 5; | |
| break; | |
| case "ArrowDown": | |
| console.log("Move box down"); | |
| y += 5; | |
| break; | |
| case "ArrowRight": | |
| console.log("Move box right"); | |
| x += 5; | |
| break; | |
| case "ArrowUp": | |
| console.log("Move box up"); | |
| y -= 5; | |
| break; | |
| case "Enter": | |
| console.log("Return box to original position"); | |
| x = 10; | |
| y = 10; | |
| break; | |
| default: | |
| console.log("Unknown key"); | |
| break; | |
| } | |
| }); | |
| // Function to perform animation | |
| function animate() { | |
| // Clear the canvas | |
| ctx.clearRect(0, 0, canvas.width, canvas.height); | |
| // Draw the box at the updated position | |
| ctx.fillStyle = "green"; | |
| ctx.fillRect(x, y, 150, 100); | |
| // Request the next animation frame | |
| requestAnimationFrame(animate); | |
| } | |
| // Start the animation | |
| requestAnimationFrame(animate); |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment