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.)
“Some men live with an invisible limp,
stagger, or drag
a leg. Their sons are often angry.”
—Robert Bly (b. 1926)
“The mountain stood there to be pointed at.
Pasture ran up the side a little way,
And then there was a wall of trees with trunks;
After that only tops of trees, and cliffs
Imperfectly concealed among the leaves.”
—Robert Frost (1874–1963)