stairs
Path: Plugin models/Physics Engine/models/Stairs.gaml
https://github.com/gama-platform/gama.old/blob/GAMA_1.9.3/simtools.gaml.extensions.physics/models/Physics%20Engine/models/Stairs.gaml
Path: Plugin models/Physics Engine/models/Stairs.gaml
https://github.com/gama-platform/gama.old/blob/GAMA_1.9.3/simtools.gaml.extensions.physics/models/Physics%20Engine/models/Stairs.gaml