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Glitchy Ledge Grab: Difference between revisions
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A GLG can be triggered in a few ways: | A GLG can be triggered in a few ways: | ||
* The wall is slightly tilted away away from Mario on the vertical axis, so the lower point (30 units above Mario) is | * The wall is slightly tilted away away from Mario on the vertical axis, so the lower point (30 units above Mario) is inside the wall, but the upper point (150 units above Mario) is not. This triggers a ledge grab check when there is not intended to be one. This is used in the [[A Button Challenge]] to enter [[The Secret Aquarium]] with 0 A-button presses.<ref>https://www.youtube.com/watch?v=7YhJcF9v7QQ</ref> | ||
* Mario correctly triggers a ledge grab on a wall he is not completely below, but it detects an unintended floor. This can happen near the edges of non-axis-aligned walls, because the logic for a [[Ledge Grab]] uses a point starting from Mario, but in the direction perpendicular to the wall Mario is inside. This perpendicular line can extend past the wall Mario is inside, and end up inside an unintended floor. This is used in the [[A Button Challenge]] to enter [[Bowser in the Sky]] in 0 A-button presses.<ref>https://www.youtube.com/watch?v=Ii2rvLDd09I&t=1069s</ref><ref>https://www.youtube.com/watch?v=VkfRQ0_vu40</ref> | * Mario correctly triggers a ledge grab on a wall he is not completely below, but it detects an unintended floor. This can happen near the edges of non-axis-aligned walls, because the logic for a [[Ledge Grab]] uses a point starting from Mario, but in the direction perpendicular to the wall Mario is inside. This perpendicular line can extend past the wall Mario is inside, and end up inside an unintended floor. This is used in the [[A Button Challenge]] to enter [[Bowser in the Sky]] in 0 A-button presses.<ref>https://www.youtube.com/watch?v=Ii2rvLDd09I&t=1069s</ref><ref>https://www.youtube.com/watch?v=VkfRQ0_vu40</ref> | ||
* Mario's lower point is near a wall, and his upper point is aligned exactly with a gap in the wall due to float imprecision. <ref>https://www.youtube.com/watch?v=j5VSzpl-Xdg</ref> | * Mario's lower point is near a wall, and his upper point is aligned exactly with a gap in the wall due to float imprecision. <ref>https://www.youtube.com/watch?v=j5VSzpl-Xdg</ref> | ||