How to move a sprite with directional inputs

Directional (horizontal and vertical) inputs in Mini Micro are best detected using the key.axis method. This will respond to arrow keys, WASD, and any connected gamepad/joystick. This gives the player maximum flexibility in controlling their character.

key.axis returns a value from -1 to 1, with 0 being when no input is given. So, you can simply multiply this by the maximum amount you want to move the sprite, and add it to the sprite's x or y position.

Example

sp = new Sprite
sp.image = file.loadImage("/sys/pics/Wumpus.png")
display(4).sprites.push sp
speed = 10  // pixels per frame
while true
	sp.x = sp.x + key.axis("Horizontal") * speed
	sp.y = sp.y + key.axis("Vertical") * speed
	yield
end while