Programming Games Show your rock-paper-scissors. Demonstrate bouncing ball. Demonstrate and examine Bo the dog. Homework: Modify Bo to make your own.

Time event Flash has Timer objects. You/your code needs to do 3 things: –create the Timer object, setting the time and, optionally, the number of events var btimer = new Timer(100); var limitedtimer = new Timer(1000,3); –set up the event handling btimer.addEventListener(TimerEvent.TIMER,movb) –start the timer btimer.start();

Collisions There are no balls, dogs, walls, etc. Collisions are detected by doing calculations and, as appropriate, changing variables. Bouncing ball example: if (rightwall.hitTestPoint(ball.x,ball.y, true)) { xd=-1; }

Bouncing ball ball as movie clip instance on the Stage along with 4 instances of the movie clip symbol wall each with its own instance name! Timer object: set up event to happen every interval of time and invoke function that function moves the ball in x and y specified amounts and checks for hitting walls. When that happens, the appropriate deltas are changed. Demonstrate. Skim tutorial.

Bo the barking dog The movie clip symbol has several frames representing moving legs… The whole symbol is moved within a virtual box. Instead of bouncing, Bo disappears and reappears at the other side. This is combination of cel and computed animation. Demonstrate. Examine code.

Assignment Read Bouncing Ball tutorial and Bo the dog tutorial. Download source for Bo the dog. Change –all the graphics –something in the code make dog/whatever speed up and slow down add a button to change speed –add a slider to change speed. Look at examples, use Help. change to bounce instead of exiting one side, etc. ?

Other applications If you complete this, you can look at other Bo the Barking Dog programs –source code –tutorial/notes