Time for action - turning the camera with the mouse position

To see this in action, we're going to set the camera's heading and pitch based on where the mouse is in the window.

  1. Add this code to the cycleControl() method right above the call to self.speedCheck:
    if(base.mouseWatcherNode.hasMouse() == True):
mpos = base.mouseWatcherNode.getMouse()
base.camera.setP(mpos.getY() * 30)
base.camera.setH(mpos.getX() * -30)
  2. Save the file as chp04_07.py and run it.
Time for action - turning the camera with the mouse position

Now, the camera snaps to a new rotation based on the position of the mouse in the window. To be specific, the new rotation is equal to a percentage of 30 degrees according to how far the mouse is from the center of the window.

  1. What happens if we call base.mouseWatcherNode.getMouse() when the mouse isn't in the window?
  2. What is base.mouseWatcherNode.hasMouse() commonly used for?

Take some time to play with setting up control schemes. Change the keys that are being used, add keys to change the colour or scale of things, and so on. Try different ideas, like changing the colour of the cycle based on the mouse position within the window, until you feel comfortable with handling user input. Make sure you save the files containing these changes with new names!