“Impossible spaces” refer to the mechanic shown in the video.
How to Set Up the Scene in Unity.
A “teleporter” script, created by a YouTube user named, Danubian, is used to make impossible levels or objects appear as you walk around.
First step is creating four identical scenes. Each scene is placed in an empty game object to manage easier.
The appearing red balls are added to each scene afterwards. The blue planes shown below aren’t rendered when the game is played. If they are, check the mesh renderer attribute to toggle visibility. Each plane is either a entry or an exit for the “Teleporter.cs” script. When the player collides with entry planes, the plane teleports the player to the exit plane instantly.
Other than having balls appear when the player moves around, this mechanic is commonly used to create what are called “impossible spaces.” In a different game, the player turns around a hallway, finds a dead end, turns back, and finds the hallway lengthened. The scene with the red plane moves the player to the white plane scene(both planes are visible only in the editor). The hairpin corner hides the changing architecture from the player’s view.
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