il gioco della palla per divertimento (di Mr)

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il gioco della palla per divertimento (di Mr)

Consigliato

26 September 2024

Gioco di pila

23 August 2025

Modello di sito web portfolio per web designer

21 July 2025

Portfolio degli sviluppatori: Web, app, design - Dawid Wróbel

HTML

CSS

JS

// call the canvas 
let canvas = document.querySelector("canvas")
// the screen
canvas.width = window.innerWidth ; 
canvas.height = window.innerHeight ; 
// create the 2d screen 
let c = canvas.getContext("2d");

class ball{
    // that is the variable
    constructor(x , y){
        this.baseR = 10
        this.r = this.baseR
        this.r  = (Math.random()) * 20 ;
        this.x  = x || randomSetInrFromInterval(this.r , window.innerWidth - this.r);
        this.y  = y || randomSetInrFromInterval(this.r , window.innerHeight - this.r);
        this.vx = (Math.random() - 0.5) * 5 ;
        this.vy = (Math.random() - 0.5) * 5 ;
        this.color = `rgb(${(Math.random() * 255)} , ${(Math.random() * 255)} , ${(Math.random() * 255)})`
        this.draw()
    }
    // the roll for create the circle 
    draw(){
        c.beginPath();
        c.arc(this.x,this.y,this.r,0,Math.PI * 2);
        c.fillStyle = this.color
        c.fill()
    }
    // the roll for ball can not out the screen 
    update(){
        if(this.x+this.r > window.innerWidth || this.x-this.r < 0){
            this.vx = -this.vx
        }
        if(this.y+this.r > window.innerHeight || this.y-this.r < 0){
            this.vy = -this.vy
        }
        this.x += this.vx
        this.y += this.vy
        this.draw()
    }
}

// the loop for create any ball 
let balls = [] ;
for(let i = 0 ; i<100 ; i++){
    balls.push(new ball())
}
// the scroll ball , create a ball
function animate(){
    c.clearRect(0,0,window.innerWidth , window.innerHeight);
    balls.forEach(ball =>{
        ball.update()
    })
    requestAnimationFrame(animate)
}
 // that is the function for create the ball when i click on the screen
window.addEventListener("click" , (e)=>{
    balls.push(new ball(e.clientX , e.clientY))
})

window. addEventListener("mousemove" ,(e)=>{
    balls.forEach(ball=>{
        let distance = Math.sqrt(Math.pow(e.clientX - ball.x,2) + Math.pow(e.clientY - ball.y,2))
        if(distance < 100 && ball.r < ball.baseR * 4){
            ball.r += 1
        }else if(ball.r > ball.baseR){
            ball.r -= 1
        }
    })
})

window.addEventListener("resize" , ()=>{
    canvas.width = window.innerWidth ; 
    canvas.height = window.innerHeight ; 
})
animate()

// the ball have random place in a screen 
function randomSetInrFromInterval(min , max){
    return Math.floor(Math.random() * (max - min + 1) + min )
}

Consigliato

Gioco di pila

Modello di sito web portfolio per web designer

Portfolio degli sviluppatori: Web, app, design - Dawid Wróbel

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