j'ai réglé le problème de rotation de la plateforme

New Unity Project/Assets/Materials.meta

New Unity Project/Assets/Materials/New Material.mat

New Unity Project/Assets/Materials/New Material.mat.meta

New Unity Project/Assets/Scenes/SampleScene.unity

New Unity Project/Assets/Script.meta

New Unity Project/Assets/Script/Mouvements.cs

New Unity Project/Assets/Script/Mouvements.cs.meta

New Unity Project/Assets/Script/rotationCamera.cs

New Unity Project/Assets/Script/rotationCamera.cs.meta

New Unity Project/Assets/prefab.meta

New Unity Project/Assets/prefab/board.prefab

New Unity Project/Assets/prefab/board.prefab.meta

New Unity Project/ProjectSettings/TagManager.asset