Final Project

/*
Bon Bhakdibhumi
bbhakdib
Section D
*/

var particles = [];


function setup() {
    createCanvas(400, 400);
    for (var i = 0; i < 50; i ++) {
        particles[i] = new Object();
        particles[i].x = random(width);
        particles[i].y = random(height);
        particles[i].dx = random(-2,5);
        particles[i].dy = random(-2,5);
        particles[i].c = color(86, 137, 179);
        particles[i].covid = false;
    }
    frameRate(25);
}

function draw() {
    background(201, 156, 105);
    for (var j = 0; j < 50; j ++) {
        drawParticles(particles[j]);
        moveParticles(particles[j]);
    }
    if (frameCount == 50 || frameCount % 100 == 0) {
        particles[2].covid = true;
    }
// calculate distance for infection
    for (var i = 0; i < particles.length; i ++) {
        for (var j = 0; j < particles.length; j ++) {
            var d = int(dist(particles[i].x, particles[i].y, particles[j].x, particles[j].y));
            if (d < 20) {
                if (particles[i].covid == true) {
                    particles[j].covid = true;
                }
            }
        }
    }
// display counter
//if all particles have covid, then display the warning text
     var covidCounter = 0;
    for (var i = 0; i < particles.length; i ++) {
        if (particles[i].covid == true) {
            covidCounter ++;
        }
    }
    noStroke();
    fill(255);
    textAlign(LEFT);
    textSize(20);
    text("Infected People:", 10, 25);
    text(covidCounter, 160, 25);
    if (covidCounter == particles.length) {
        fill(255, 253, 131);
        textAlign(CENTER);
        textSize(30);
        text('STOP CORONA!', width/2, height/2.15);
        textSize(35)
        text('KEEP YOUR DISTANCE!', width/2, height/1.75);
    }
}

// reset canvas and cure all particles
function keyPressed() {
        for (var i = 0; i < particles.length; i ++) {
            particles[i].covid = false;
        }
}

// cure covid with mouse
function mousePressed() {
    for (var i = 0; i < particles.length; i ++) {
        var mouseDistance = int(dist(mouseX, mouseY, particles[i].x, particles[i].y));
        if (mouseDistance < 10) {
            particles[i].covid = false;
        }
    }
}

function drawParticles(p) {
    if (p.covid == true) {
        stroke(1);
        fill(204, 61, 61);
    } else {
        stroke(1);
        fill(p.c);
    }
    ellipse(p.x, p.y, 12, 12);
}

function moveParticles(p) {
    p.x += p.dx;
    p.y += p.dy;
    if (p.x > width || p.x < 0) {
        var resetX = random(100);
        if (resetX < 50) {
            p.x = 0;
        } else {
            p.x = width;
        }
    p.dx = random(-2, 5);
    }
    if (p.y > height || p.y < 0) {
        var resetY = random(100);
        if (resetY < 50) {
            p.y = 0;
        } else { 
            p.y = height;
        }
    p.dy = random(-2, 5);
    }
}