There are three types of mouse events in pygame: 1. MOUSEBUTTONUP, for when a mouse's button is released. 2. MOUSEBUTTONDOWN, for when a mouse's button is pressed. 3. MOUSEMOTION, for when the mouse moves across
the screen. Each EventType object generated has a number of attributes which are listed below.

MOUSEMOTION:
- buttons: a tuple containing the buttons on the mouse being pressed
- pos: the xy coordinates of the cursor after movement
- rel: the xy coordinates of the post-movement position relative to the previous position (AKA the distance)

MOSUEBUTTONDOWN and MOUSEBUTTONUP:
- button: an int representing the button being pressed. 1 for left button, 2 for mosue wheel, 3 for right button, 4 for scrolling up, and 5 for scrolling down.
- pos: the xy coordinates of the cursor when the button was pressed

University of Michigan - Ann Arbor

The event queue can be accessed with the method event.get(), as demonstrated below.

```Python
eventQueue = pygame.event.get()
```

Accessing the Event Queue in Pygame

Pygame Documentation

Code may be routed depending on a keyboard press. For example, say you want to call a method which exists elsewhere known as moveUp(), which moves your character upwards. You only want to do this if the 'w' key is pressed on the keyboard. You must check that it is a keyboard event, which you can do by checking if type of the EventType object is equal to the constant KEYDOWN, which stores the integer value for keydown type events. Then, you could check the 'key' attribute on the keyboard event's EventType object, which stores which key was pressed in the form of an integer. Thankfully, there are also built in constants for this. The constant is always 'K_' followed by the key itself. For 'w', it is 'K_w'.
```Python
for event in pygame.event.get() #this block iterates through the queue
	if event.EventType.type == pygame.KEYDOWN: #if the event has type keydown
		if event.EventType.type == pygame.K_w: #if event key attribute is equal to w 
                      moveUp() #call moveUp()!
```

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