godot-demo-projects/2d/hdr/beach_cave.gd

extends Node2D

const CAVE_LIMIT = 1000

onready var cave = $Cave

func _unhandled_input(event):
	if event is InputEventMouseMotion and event.button_mask > 0:
		var rel_x = event.relative.x
		var cavepos = cave.position
		cavepos.x += rel_x
		if cavepos.x < -CAVE_LIMIT:
			cavepos.x = -CAVE_LIMIT
		elif cavepos.x > 0:
			cavepos.x = 0
		cave.position = cavepos