🎮 RetroPy Input Module Documentation (MicroPython)

The Input module manages button polling, transient input state, and GPIO mapping in RetroPy.

📦 Class: Input

🔧 Constructor

Input(left=13, right=10, up=11, down=12, A=9, B=8, trigger_left=22, trigger_right=23)

Initializes the 8-button setup using GPIO pins.

🎯 Input Group Checks

• ab_pressed(): True if A or B pressed
• movement_pressed(): True if any D-pad pressed
• trigger_pressed(): True if any trigger pressed
• any_pressed(): True if any button pressed

⌨️ Button Queries

• is_pressed(id): Just pressed this frame
• is_released(id): Just released this frame
• state(id): Current state (True/False)

📡 Input Queue

• poll(): Returns (type, id, value, timestamp) or None
• poll_sources(): Polls GPIO
• clear(): Clears transient states (pressed/released)

🔢 Button IDs

LEFT = 0
RIGHT = 1
UP = 2
DOWN = 3
A = 4
B = 5
TRIGGER_LEFT = 6
TRIGGER_RIGHT = 7

📌 Notes

• poll_sources() should be called once per frame.
• Queue holds INPUT_BUTTON_DOWN, INPUT_BUTTON_UP, etc.