distance sensor values are color dependent #11
Description
The distance sensors are based on webots DistanceSensor with the type infra-red.
Infra red sensors in webots have the redColorSensitivity attribute which defaults to 1.
This makes their returned values dependent on the surface color of the object they are detecting.
As the obstacle's gray color contains a different red value than the wall's cyan, the measured distance differs between the two.
This prevents proper use of the distance sensors as there is no reliable way of validating the sensor's return value.
This could be fixed by changing the sensor type to generic or by setting redColorSensitivity to 0.