Author: anthony

var counter = 0;
var viruses = [];
var newVirusLikelihood = 0.05;
var cars = [];


function setup() {
    createCanvas(480, 480);
    frameRate(10);
}

function draw() {
    push();
    background1();
    pop();
    //gives a flashing warning if there are more than 20 objects
    //Lucas and Anthony
    if(viruses.length > 20){
        if(frameCount % 4 == 0){
            background(255, 0, 0, 100);
        }
        else{
            push();
            background1();
            pop();
        }
    }
    //The following if statements increase the spawn rate at certain scores
    //(Lucas)
    if(counter == 5){
        newVirusLikelihood = .07
    }
    if(counter == 10){
        newVirusLikelihood = .12
    }
    if(counter == 25){
        newVirusLikelihood = .17
    }
    if(counter == 50){
        newVirusLikelihood = .23
    }
    //Creates a progress bar to a vaccine (Lucas)
    fill(0, 255, 0);
    rect(width - 10, 0, 10, counter * height / 100);

    fill(255);
    //displays how many viruses have been "cleansed" (Lucas)
    text("Score = " + counter.toString(), 10, 10, 70, 80);
    updateAndDisplayViruses();
    bounceViruses();
    addNewVirusesWithSomeRandomProbability();
    print(counter.toString());
    //End Screen if the player loses (Lucas)
    if(viruses.length >= 30){
        //erase();
        background(0);
        textAlign(CENTER);
        textSize(26);
        text("You Lose: COVID-19 Has Taken Over", width / 2, height / 2)
        noLoop();
    }
    //End Screen if the player wins (Lucas)
    if(counter == 100){
        background(255);
        push();
        fill(0);
        textAlign(CENTER);
        textSize(26);
        text("You Win: A Vaccine Has Been Distributed", width / 2, height / 2)
        pop();
        noLoop();

    }
}

//The following code was done by Lucas until indicated
function updateAndDisplayViruses(){
    // Update the virus positions, and display them.
    for (var i = 0; i < viruses.length; i++){
        viruses[i].move();
        viruses[i].display();
    }
}
//makes the viruses bounce off the edges of the canvas
function bounceViruses(){
    for(var i = 0; i < viruses.length; i++){
        //determines if a virus is on the left or right and switches direction
        //accordingly
        if(viruses[i].x + viruses[i].breadth / 2 >= width ||
        viruses[i].x - viruses[i].breadth / 2 <= 0){
            viruses[i].speedX = -viruses[i].speedX
        }
        //determines if a virus is on the top or bottom and switches direction
        //accordingly
        if(viruses[i].y + viruses[i].breadth / 2 >= height ||
        viruses[i].y - viruses[i].breadth / 2 <= 0){
            viruses[i].speedY = -viruses[i].speedY
        }
    }
}


function addNewVirusesWithSomeRandomProbability() {
    // Adds a virus based upon a probability
    if (random(0,1) < newVirusLikelihood) {
        viruses.push(makeVirus(random(20, width - 20),
        random(20, height - 20)));
    }
}

// method to update position of virus every frame
function virusMove() {
    this.x += this.speedX;
    this.y += this.speedY;
}

function virusDisplay() {
    //colors the viruses randomly
    push();
    fill(this.clr);
    push();
    translate(this.x, this.y);
    circle(0, 0, this.breadth);
    pop();
    pop();
}

function makeVirus(startLocationX, startLocationY){
    var virus = {x: startLocationX,
               y: startLocationY,
               breadth: random(20, 80), //size of virus
               //random color of each virus
               clr: color(random(255), random(255), random(255)),
               //random speeds of virus
               speedX: random(-5, 5),
               speedY: random(-5, 5),
               move: virusMove,
               display: virusDisplay}
    return virus;
}

function mousePressed(){
    var vBefore = [];
    var vAfter = [];
    var vFinal = [];
    var v = viruses;
    for(var i = 0; i < viruses.length; i++){
        //conditions for mouse to be inside a virus
        if(mouseX > viruses[i].x - viruses[i].breadth / 2 & mouseX <
            viruses[i].x + viruses[i].breadth/2 && mouseY < viruses[i].y +
            viruses[i].breadth / 2 && mouseY > viruses[i].y -
            viruses[i].breadth / 2){
                //viruses up until the clicked object
                vBefore = viruses.slice(0, i);
                //viruses after the clicked object
                vAfter = v.slice(i + 1);
                //combines the two arrays of objects (eliminating the clicked
                //one)
                vFinal = vBefore.concat(vAfter);
                counter += 1
                viruses = vFinal
        }
    }
}
//The following code was done by Anthony
function background1(){   //joining background helper functions into one
  background(135,206,235);
  push()
  hospital();
  pop()
  push()
  updateAndDisplayCars();
  removeCarsThatHaveSlippedOutOfView();
  addNewCarsWithSomeRandomProbability();
  pop()
}

function hospital(){
  translate(0,-50);
  rect(100,250,100,230);    //creating the hospital building
  rect(200,200,200,280);
  rect(240,150,120,50);
  push();
  noStroke();
  fill(255,0,0);    //red cross on the top
  rect(295,160,10,30);
  rect(285,170,30,10)
  pop();
  push();
  fill(0,0,255);
  for(x=115;x<185;x+=30){   //windows
    for(y=255;y<460;y+=30){
      square(x,y,15);
    }
  }
  for(x=215;x<390;x+=30){
    for(y=210;y<400;y+=30){
      square(x,y,15);
    }
  }
  rect(300,450,20,30);    //doors
  rect(280,450,20,30);
  pop();
  push()
  fill(64);
  rect(0,480,480,50);   //street
  pop()
}

function updateAndDisplayCars(){
    // Update the cars' positions, and display them.
    for (var i = 0; i < cars.length; i++){
        cars[i].move();
        cars[i].display();
    }
}

function removeCarsThatHaveSlippedOutOfView(){
    //defines if a car is off the canvas, recreates the array to keep
    //cars still on canvas and remove ones that have moved off
    var carsToKeep = [];
    for (var i = 0; i < cars.length; i++){
        if (cars[i].x + cars[i].breadth > 0) {
            carsToKeep.push(cars[i]);
        }
    }
    cars = carsToKeep;
}


function addNewCarsWithSomeRandomProbability() {
    // Adds a car based upon a probability
    var newCarLikelihood = 0.02;
    if (random(0,1) < newCarLikelihood) {
        cars.push(makeCar(width));
    }
}


// method to update position of tree every frame
function carMove() {
    this.x += this.speed;
}

function carDisplay() {
    //colors the car randomly
    fill(this.clr);
    push();
    translate(this.x, 440);
    //body of the car
    rect(0, 0, this.breadth, 30);
    //windows as roof of the car
    fill(255, 255, 255, 50);
    quad(15, 0, this.breadth*.25, -20, this.breadth*.75,
         -20, this.breadth-5, 0);
    //wheels
    fill(0);
    circle(20, 25, 25);
    circle(80, 25, 25);
    pop();
}

function makeCar(startLocationX){
    var car = {x: startLocationX,
               breadth: 100, // length of car
               //random color of each car
               clr: color(random(255), random(255), random(255)),
               //random speeds of cars
               speed: random(-5, -10),
               move: carMove,
               display: carDisplay}
    return car;
}