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# About customEventExample
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### Learning Objectives
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This example demonstrates a simple game. A GameEvent class is
used to store the bullet and bug that just collided.
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After studying this example, you'll understand how to create an object to generate custom events using a class based on ```ofEventArgs` ``
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In the code, pay attention to:
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* OF classes and functions to create custom events:
* ` ``ofEventArgs` ``, base class for events that don't send any arguments like draw or update
* ` ``ofAddListener` `` to add a listener method to GameEvent
* ` ``ofNotifyEvent()` `` to notify the GameEvent
### Expected Behavior
When launching this app, you should see a screen with
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* nine small randomly positioned black circles. Bugs crawl out of the circles and move around the stage.
* a canon pointing upwards at the bottom center of the window rotating on it's bottom vertical axis, its angle mapped to the horizontal mouse position.
* when pressing on the spacebar, the canon shoots a pink bullet. If a bullet hits a bug, the bug disappears.
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* a text overlay at the top left corner displays the number of bullets shot and bugs killed.
* A message in the console: "Game Event: BUG HIT" when bullet and bug collide.
Instructions for use:
* Move the mouse on it's horizontal axis to aim canon. Press spacebar to shoot bullets at bugs.
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### Other classes used in this file
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* ` ``GameEvent` ``
* ` ``Bullet` ``
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* ` ``Bug` ``
