I am trying to learn Konva.js to build a game and one of my biggest priorities is that the canvas should be responsive in width and height. I have managed to achieve that but when I resize my browser, the…
I have JavaScript code that draws vertical bars and changes their color based on the average music frequency. I tried to change the color of each bar to match the color of the previous bar, but I got a different…
My interest in game development led me to the idea of implementing the logic from scratch, without an engine. Finally, I came to the point of optimizing the movement sequences of the background in an RPG 2D game. Basically, the…
I'd like to allow zooming on a canvas (excalidraw API) using only the mouse wheel like on google map , without pressing the ctrl key. Here are two things that I tried : useEffect(() => { const handleWheel = (event)…
I am attempting to create a game where objects (currently circles) are randomly generated within a canvas, and the objects and their positions (plus other info) are stored within an array. The objects are randomly generated and what I want…
I have a Canvas setup as follows: <canvas id="canvas" style="width: 1200px; height: 500px;"></canvas> I then want to upload a file and add it to the canvas, but drawn using a specific width and height, as follows: var fileReader = new…
CONTEXT: I am trying to make a light source using ray casting, that the player can use in a randomly generated maze. The rays cast from the mouse pointer. The radial gradient that I'm using changes their colour from white…
I'm trying to render some flames however I cannot achieve a transparent canvas with putImageData(), resulting in a black canvas but well-drawn flames. I tried "globalcompositeoperation" "source-over" and "globalAlpha" but to no avail. The only issue is that the canvas…
The basic idea comes from the map of a game. According to the my code review, the map is a full-page canvas. I have no problem with drawing images on canvas. My question is how to detect map houses and…
Using object-fit: contain allow to resize a canvas to fit inside a container. This snippet is drawing a circle using mouse event position : canvas.width=1920; canvas.height=1200; const ctx=canvas.getContext("2d"); ctx.lineWidth = 10; ctx.strokeRect(0,0,canvas.width,canvas.height); canvas.onmousemove = (e) => { ctx.clearRect(0,0,canvas.width,canvas.height); ctx.strokeRect(0,0,canvas.width,canvas.height); ctx.beginPath();…