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.)
“The season developed and matured. Another year’s installment of flowers, leaves, nightingales, thrushes, finches, and such ephemeral creatures, took up their positions where only a year ago others had stood in their place when these were nothing more than germs and inorganic particles. Rays from the sunrise drew forth the buds and stretched them into long stalks, lifted up sap in noiseless streams, opened petals, and sucked out scents in invisible jets and breathings.”
—Thomas Hardy (1840–1928)
“Last night you wrote on the wall: Revolution is poetry.
Today you needn’t write; the wall has tumbled down.”
—Adrienne Rich (b. 1929)