P(H)ONG

Requirements

Qt 5.13.0 (minExtend and maxExtended for QGeometry)

Task

Let's start series of simple Qt challenges in which we'll try to build often well known mini games or mechanisms by using our green framework.

#1 Qt task - Pong

In task number one the goal is to create Pong game. Probably all of you are familiar with this game in which two players are trying to get the point by buncing back the dot so that the opponent does not.

Requirements:

• Simple interface, built without using assets
• Counting and displaying points
• Steering for at least one player

This task is rather simple one, which has to be a kind of warmup. But if you need something more sophisticated - just free your imagination and tune pong game as you wish! Share your solution as a git link to start discussion about used Qt features and compare it to the others!

Issues

• Couldn't use onStarted, onFinished and onRunningChanged signals in a nested Vector3dAnimation inside of a Transition. Solved by using a SequentialAnimation combined with two ScriptActions at the beginning and end.

• Can't use Cameras void translate(vLocal, enumeration option) together with Transition. This is why setting of the camera position and viewCenter is done manually.

• I had trouble using KeyboardHandler together with KeyboardDevice in each of the different Scene types I've created. Using focus or enabled wasn't work toggle each individual on and off. Once focused each KeyboardHandler received the same event even though it was accepted.

• KeyboardHandler onPressed and onEscapePressed will bothe be triggered even pressing the escape key even though it was accepted in the onPressed call already.

      KeyboardHandler {
          id: keyboardHandler
          sourceDevice: keyboardDevice
          focus: true
          onPressed: {
              console.log("KeyboardHandler | onPressed")
              console.log("event " + event + " " + event.accepted)
              Logic.currentScene().onPressed(event)
          }
          onEscapePressed: {
              console.log("KeyboardHandler | onEscapePressed")
              console.log("event " + event + " " + event.accepted)
              Logic.currentScene().onEscapePressed(event)
          }
      }
  

  Has strange side effects when used together with FirstPersonCameraController. The camera position and viewCenter will be set to a strange value, not set by the scene logic.

TODO: Hint about resetting code model Tools > QML/JS > Reset Code Model