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I´m finishing a game in Unity, but I have a new requirement: make it multiplayer. I will do this by splitting the screen and running two instances.
Is there a way to instance a scene twice at the same time, and render them two a different part of the screen? Alternativley, what is the best approach to achieve this?
If you want to make a local multiplayer with a split screen, the way to go is to have two cameras and change the rect viewport of them :
https://docs.unity3d.com/ScriptReference/Camera-rect.html
For vertical split screen : (x, y, width, height)
For horizontal split screen : (x, y, width, height)
No need to have two worlds. However, if you want the players to have their own GUI, you will have to take a look at culling masks
https://docs.unity3d.com/ScriptReference/Camera-cullingMask.html
Place all the objects of the player 1 in a new layer ("Player1Layer"), all the objects of player 2 in another ("Player2Layer"), and make sure the camera of the player 1 does not have "Player2Layer" checked in its culling mask while the camera of the player 2 does not have "Player1Layer" checked in its culling mask.
It seems that additional configuration is required so as to show GUI to a specific player. I don't really know why.
Each player must have their own :
Main camera with :
Depth value set to 0Everything, except Player1Layer and Player2LayerA second camera with :
Depth value set to 1Player1Layer (or Player2Layer for 2nd player)A dedicated canvas with :
For the sake of simplicity, attach the two cameras of a given player to a unique parent, and move the parent so that the two cameras will follow. Maybe, you can keep the cameras #2 at (0, 0, 0). I haven't tested.
