I'm attempting to write a JavaScript program where the ball ignores hitting a green obstacle but ends the game when a red obstacle indicates game over. However in my code the game ends when the ball hits an obstacle of any color.
My definition of the obstacle is:
function Obstacle(x, size, horizon, color) {
this.x = x;
this.y = horizon - size;
this.size = size;
this.color = color;
this.onScreen = true;
}
/**
* handle x and onScreen values
*/
Obstacle.prototype.update = function(speed) {
/* check if offscreen */
this.onScreen = (this.x > -this.size);
/* movement */
this.x -= speed;
};
Obstacle.prototype.draw = function() {
fill(this.color);
stroke(255);
strokeWeight(2);
rect(this.x, this.y, this.size, this.size);
};
Obstacle.prototype.hits = function(ball) {
var halfSize = this.size / 2;
var minimumDistance = halfSize + (ball.radius); // closest before collision
/* find center coordinates */
var xCenter = this.x + halfSize;
var yCenter = this.y + halfSize;
var distance = dist(xCenter, yCenter, ball.x, ball.y); // calculate distance from centers
return (distance < minimumDistance); // return result
};
This is the code for the game:
function setup() {
createCanvas(600, 200);
textAlign(CENTER);
horizon = height - 40;
score = 0;
obstacleSpeed = 6;
var size = 20;
ball = new bol(size * 2, height - horizon, size);
textSize(20);
}
function draw() {
background(51);
drawHUD();
handleLevel(frameCount);
ball.update(horizon);
handleObstacles();
//handlepowerups();
}
/**
* draws horizon & score
*/
function drawHUD() {
/* draw horizon */
stroke(255);
strokeWeight(2);
line(0, horizon, width, horizon);
/* draw score */
noStroke();
text("Score: " + score, width / 2, 30);
ball.draw();
}
/**
* updates, draws, and cleans out the obstacles
*/
function handleObstacles() {
for (var i = obstacles.length - 1; i >= 0; i--) {
obstacles[i].update(obstacleSpeed);
obstacles[i].draw();
if (obstacles[i].hits(ball)) // if there's a collision
{
if (obstacles[i].color = color(225, 0, 0))
endGame();
else
obstacles[i].color = color(0, 0, 225)
}
if (!obstacles[i].onScreen) // if it's no longer showing
obstacles.splice(i, 1); // delete from array
}
}
/**
* speeds game up, pushes new obstacles, & handles score
*/
function handleLevel(n) {
if (n % 100 === 0) { // every 0.5 seconds
var n = noise(n);
if (n > 0.5)
newObstacle(n); // push new obstacle
if (n % 120 === 0) // every 2 seconds
obstacleSpeed *= 1.05; // speed up
}
score++;
}
/**
* pushes random obstacle
*/
function newObstacle(n) {
var col1 = color(225, 0, 0);
var col2 = color(0, 225, 0);
var size = random(25) + 20;
var obs = new Obstacle(width + size, size, horizon, col2);
var obs2 = new Obstacle(width + size, size, horizon, col1);
var cases = random(1);
if (cases < 0.5)
obstacles.push(obs);
else
obstacles.push(obs2)
}
function keyPressed() {
if ((keyCode === UP_ARROW || keyCode === 32) && ball.onGround) // jump if possible
ball.jump();
boingaudio.play()
}
function endGame() {
noLoop();
noStroke();
textSize(40);
text("GAME OVER", width / 2, height / 2);
if (highscore !== null) {
if (score > highscore) {
localStorage.setItem("highscore", score);
}
} else {
localStorage.setItem("highscore", score);
}
textSize(20);
text("Highscore: " + highscore, width / 2, height / 2 + 20);
gameoveraudio.play()
}
I don't understand why the ball keeps ending game for no matter what colored ball appears. Can you help me figure out what's wrong?
