An invisible wall or invisi-wall is a video game term for a boundary that limits where a player can go in a certain area, but doesn't appear in-game as any kind of visible obstacle, or as an obstacle that in reality could easily be bypassed, such as a mid-sized rock or short fence. In 2D games, the edge of the screen itself can form an "invisible wall", in that a character in play may be prevented from travelling off the edge of the screen. In 3D games, invisible walls are used similarly to prevent a player leaving the gameplay area. This is often done in preference to using a more visible boundary, as this can reduce the realism of the environment.
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Famous quotes containing the words invisible wall, invisible and/or wall:
“Martin Luther King, Jr., was the conscience of his generation.... He and I grew up in the same South, he the son of a clergyman, I the son of a farmer. We both knew from opposite sides, the invisible wall of racial segregation.”
—Jimmy Carter (James Earl Carter, Jr.)
“Great is my envy of you, earth, in your greed
Folding her in invisible embrace,
Denying me the look of the sweet face
Where I found peace from all my strife at need!”
—Petrarch (1304–1374)
“I make myself this time
Of wood or granite or lime
A wall too hard for crime
Either to breach or climb....”
—Robert Frost (1874–1963)