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Python Lesson 15
13
Transcript
Python Lesson 15
Events
What is an Event?
Events are signals for classes
Signals cause certain actions
What are Event Driven Programs?
- Does nothing until an event happens
- Runs program when event happens
What's an Event Handler?
The part of a program that handles a certain kind of event
Event Handlers Examples
- mouseClick
- mouseMove
- keyDown
Event Queue
- A list of events in the order that they have happened
- pygame.event.get()
Let's try Key Events!
- K_a, K_b, K_c, … (for each letter)
- K_SPACE
- K_ESCAPE
- K_UP
Let's try it out!
Let's try Mouse Events!
- MOUSEBUTTONUP
- MOUSEBUTTONDOWN
- MOUSEMOTION
Let's try it out!
What are Timer Events?
A timer event generates an event at regular intervals (like an alarm clock)
Let's try it out!
We can Display Text!
Use pygame.font to display text!
- Make a font object with the font style and size
- Render the text
- Blit it to display it on the surface
Let's try it out!
Thank You!
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