public override void gameLogic()
{
if (gameOver == false)
{
//time tracker
timeElapsed = this.getElapsedTime();
timer.changeText(Convert.ToString(timeElapsed) + " seconds");
}
//accelerate the car
if (this.isKeyPressed(Microsoft.Xna.Framework.Input.Keys.Up) == true)
{
line1.applyForce(0, 25);
line2.applyForce(0, 25);
line3.applyForce(0, 25);
line4.applyForce(0, 25);
kid1.applyForce(0, 25);
kid2.applyForce(0, 25);
flag.applyForce(0, 25);
}
//reposition lines when they get off screen
if (line1.getY() > 440)
{
line1.setPosition(145, -40);
}
else if (line2.getY() > 440)
{
line2.setPosition(145, -40);
}
else if (line3.getY() > 440)
{
line3.setPosition(145, -40);
}
else if (line4.getY() > 440)
{
line4.setPosition(145, -40);
}
if (kid1.getY() > 415)
{
kid1.setPosition(rX.Next(100, 200), rY.Next(-200, -100));
}
if (kid2.getY() > 415)
{
kid2.setPosition(rX.Next(100, 200), rY.Next(-200, -100));
}
//apply brakes
if (this.isKeyPressed(Microsoft.Xna.Framework.Input.Keys.Down) == true && line1.getVelocityDY() > 0)
{
line1.applyForce(0, -100);
line2.applyForce(0, -100);
line3.applyForce(0, -100);
line4.applyForce(0, -100);
}
//move car left and right
if (this.isKeyPressed(Microsoft.Xna.Framework.Input.Keys.Left) == true)
{
car.setVelocity(-55, 0);
}
else if (this.isKeyPressed(Microsoft.Xna.Framework.Input.Keys.Right) == true)
{
car.setVelocity(55, 0);
}
else
{
car.setVelocity(0, 0);
}
//finish line
if (car.getY() < flag.getY())
{
finalStatus.changeText("Race Completed in " + Convert.ToString(timeElapsed) + " seconds");
gameOver = true;
}
//hitting pedestrians
if (car.physicsCollide(kid1))
{
finalStatus.changeText("GAME OVER-Pedestrian Squashed!!!");
}
}
public override void gameLogic()
{
//ball bounces off walls and paddles
if (ball.getX() > 390)
{
ball.setVelocity(-ball.getVelocityDX(), ball.getVelocityDY());
//update score
playerPoints++;
//reassign text in playersScore text object to reflect this change
playerScore.changeText(Convert.ToString(playerPoints));
}
if (ball.getX() < 0)
{
ball.setVelocity(-ball.getVelocityDX(), ball.getVelocityDY());
//update score
computerPoints++;
//reassign text in computerScore text object to reflect this change
computerScore.changeText(Convert.ToString(computerPoints));
}
if (ball.getY() > 390)
{
ball.setVelocity(ball.getVelocityDX(), -ball.getVelocityDY());
}
if (ball.getY() < 0)
{
ball.setVelocity(ball.getVelocityDX(), -ball.getVelocityDY());
}
if (ball.pixelCollidesWith(leftPaddle))
{
ball.setVelocity(-ball.getVelocityDX(), ball.getVelocityDY());
}
//left player moves using Q and A
if (ball.pixelCollidesWith(rightPaddle))
{
ball.setVelocity(-ball.getVelocityDX(), ball.getVelocityDY());
}
if (this.isKeyPressed(Microsoft.Xna.Framework.Input.Keys.Q))
{
leftPaddle.setVelocity(0, -100);
}
else if (this.isKeyPressed(Microsoft.Xna.Framework.Input.Keys.A))
{
leftPaddle.setVelocity(0, 100);
}
else
{
leftPaddle.setVelocity(0, 0);
}
//autonomouse computer paddle on right
paddleM = rightPaddle.getY() + rightPaddle.getHeight() / 2;
if (ball.getY() < paddleM && ball.getX() > 150)
{
rightPaddle.setVelocity(0, -170);
}
else if (ball.getY() > paddleM && ball.getX() > 150)
{
rightPaddle.setVelocity(0, 170);
}
else
{
rightPaddle.setVelocity(0, 0);
}
}