Does anyone know of a robotics developer environment ideal for testing AI programs for drones (e.g. quadcopters, planes, helicopters, etc.)? I would like something like Microsoft Robotics Developer Studio that includes a virtual environment (such as an outdoor environment with gravity, wind, etc.) to test out flight dynamics. I would like the options to add sensors to the virtual drone, such as GPS, altimeter, gyros, etc. that the AI program can then use to steer the drone.