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5. Game #4, Chain Reaction > Time for action — acting on timer events
To act on timer events, we need to detail the OnObjectTimer method inside the engine class. We will set the ID of an object to positive once again, and then check for collisions of its child collision circles:
- Check whether
timerIDis equal tog.tmObjSwitch.Method OnObjectTimer:Int(timerId:Int, obj:ftObject) If timerId = g.tmObjSwitch Then
- Get the object's ID and store it locally in the
idvariable.Local id:Int = obj.GetID()
- If
idis negative, set it back to positive.If id < 0 Then obj.SetID(obj.GetID()*-1)
- Start a
Forloop now, for every child collision circle of the object.For Local i:Int = 1 To obj.GetChildCount()
- Do a collision check for each collision circle.
g.eng.CollisionCheck(obj.GetChild(i))
