Ledge Grab - Revision history

Icecream17: programmatically expand page a la Talk:Action and Eaten_By_Bubba

2025-01-12T20:30:38Z

programmatically expand page a la Talk:Action and Eaten_By_Bubba

@@ Line 2: / Line 2: @@
 {{needs_image}}
-A '''ledge grab''' can occur when Mario's position is in the air and his next [[Quarter Steps|quarter step]] would move him inside a wall<ref>https://github.com/n64decomp/sm64/blob/master/src/game/mario_step.c#L472</ref>. If this happens, the game will verify several conditions:
+{{Action_infobox
-* Mario's vertical velocity is non-positive
+A '''ledge grab''' can occur when Mario's position is in the air and his next [[Quarter Steps|quarter step]] would move him inside a wall<ref>https://github.com/n64decomp/sm64/blob/master/src/game/mario_step.c#L472</ref>. If this happens, the game will verify several conditions:
 * There is a wall 30 units above Mario.
-* There is no wall 150 units above him.
+*Mario's vertical velocity is non-positive
 If all conditions pass, the game searches for a potential ledge to grab. From Mario's position, it considers a point 60 units in the direction perpendicular to the wall and 160 units above. This point ends up being 10 units into the wall due to Mario's 50 unit radius. From that point, it searches top-down for the first floor hitbox. If a floor hitbox is found, Mario will ledge grab onto it.
@@ Line 16: / Line 30: @@
 Examples include:
-# The wall is slightly slanted forward
+#The wall is slightly slanted forward
-# There are 2 walls meant to be coplanar that aren't
+#There are 2 walls meant to be coplanar that aren't
-# If there are 2 parallel walls with the lower one jutting out more
+#If there are 2 parallel walls with the lower one jutting out more
 {{actions}}

Dm ss: Cite the code and update to include details from code

2024-12-26T02:45:51Z

Cite the code and update to include details from code

← Older revision		Revision as of 02:45, 26 December 2024
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	A '''ledge grab''' ~~works as follows: While~~ Mario's position is in the air and ~~against~~ a wall~~, and he has a non-positive vertical speed~~, the game ~~checks two~~ conditions.		A '''ledge grab''' can occur when Mario's position is in the air and his next [[Quarter Steps\|quarter step]] would move him inside a wall<ref>https://github.com/n64decomp/sm64/blob/master/src/game/mario_step.c#L472</ref>. If this happens, the game will verify several conditions:

			* Mario's vertical velocity is non-positive
	* There is a wall 30 units above Mario.		* There is a wall 30 units above Mario.
	* There is no wall 150 units above him.		* There is no wall 150 units above him.

	If ~~both~~ conditions pass, the game searches for a potential ledge grab. From Mario's position, it considers a point 60 units in the direction perpendicular to the wall and 160 units above. This point ends up being 10 units into the wall due to Mario's 50 unit radius. From that point, it searches top-down for the first floor hitbox. If a floor hitbox is found, Mario will ledge grab onto it.		If all conditions pass, the game searches for a potential ledge to grab. From Mario's position, it considers a point 60 units in the direction perpendicular to the wall and 160 units above. This point ends up being 10 units into the wall due to Mario's 50 unit radius. From that point, it searches top-down for the first floor hitbox. If a floor hitbox is found, Mario will ledge grab onto it.

	Given these conditions, a ledge grab normally raises Mario between 30 units (inclusive) and 150 units (exclusive). Note that despite the search point starting 160 units higher than Mario's position, only a 150 unit raise is ordinarily possible because there would otherwise be a wall at the point 150 units above Mario.		Given these conditions, a ledge grab normally raises Mario between 30 units (inclusive) and 150 units (exclusive). Note that despite the search point starting 160 units higher than Mario's position, only a 150 unit raise is ordinarily possible because there would otherwise be a wall at the point 150 units above Mario.

Dm ss: Add "is in the air"

2024-12-26T02:22:18Z

Add "is in the air"

← Older revision		Revision as of 02:22, 26 December 2024
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	{{needs_image}}		{{needs_image}}

	A '''ledge grab''' works as follows: While Mario's position is against a wall and he has a non-positive vertical speed, the game checks two conditions.		A '''ledge grab''' works as follows: While Mario's position is in the air and against a wall, and he has a non-positive vertical speed, the game checks two conditions.

	* There is a wall 30 units above Mario.		* There is a wall 30 units above Mario.

Dm ss: Removed quality template but feel free to re-add it if felt necessary :)

2024-12-26T02:14:32Z

Removed quality template but feel free to re-add it if felt necessary :)

← Older revision		Revision as of 02:14, 26 December 2024
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	{{stub}}		{{stub}}
	~~{{rewrite}}~~
	{{needs_image}}		{{needs_image}}

Dm ss: Clarifying language

2024-12-26T02:09:34Z

Clarifying language

← Older revision		Revision as of 02:09, 26 December 2024
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	{{needs_image}}		{{needs_image}}

	A '''ledge grab''' works as follows: While Mario's position is against a wall and ~~falling with~~ non-positive vertical speed, the game checks two conditions.		A '''ledge grab''' works as follows: While Mario's position is against a wall and he has a non-positive vertical speed, the game checks two conditions.

	* There is a wall 30 units above Mario.		* There is a wall 30 units above Mario.
	* There is no wall 150 units above him.		* There is no wall 150 units above him.

	If both conditions pass, the game searches for a potential ledge grab. From Mario's position, it considers a point 60 units ~~towards~~ the wall and 160 units above. This point ends up being 10 units into the wall due to Mario's 50 unit radius. From that point, it searches top-down for the first floor hitbox. If a floor hitbox is found, Mario will ledge grab onto it.		If both conditions pass, the game searches for a potential ledge grab. From Mario's position, it considers a point 60 units in the direction perpendicular to the wall and 160 units above. This point ends up being 10 units into the wall due to Mario's 50 unit radius. From that point, it searches top-down for the first floor hitbox. If a floor hitbox is found, Mario will ledge grab onto it.

	Given these conditions, a ledge grab normally raises Mario between 30 units (inclusive) and 150 units (exclusive). Note that despite the search point starting 160 units higher than Mario's position, only a 150 unit raise is ordinarily possible because there would otherwise be a wall at the point 150 units above Mario.		Given these conditions, a ledge grab normally raises Mario between 30 units (inclusive) and 150 units (exclusive). Note that despite the search point starting 160 units higher than Mario's position, only a 150 unit raise is ordinarily possible because there would otherwise be a wall at the point 150 units above Mario.

Dm ss: Restructure and use more explicit wording

2024-12-26T01:50:00Z

Restructure and use more explicit wording

@@ Line 2: / Line 2: @@
 {{rewrite}}
 {{needs_image}}
-Given these conditions, a ledge grab normally raises Mario between 30 units (inclusive) and 150 units (exclusive). However, it's possible to exploit this logic to do a glitchy ledge grab and raise Mario more than 150 units (though 238 units is the max possible raise).
+A '''ledge grab''' works as follows: While Mario's position is against a wall and falling with non-positive vertical speed, the game checks two conditions.
 {{actions}}

Macrepeh at 02:06, 8 June 2021

2021-06-08T02:06:54Z

← Older revision		Revision as of 02:06, 8 June 2021
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	Given these conditions, a ledge grab normally raises Mario between 30 units (inclusive) and 150 units (exclusive). However, it's possible to exploit this logic to do a glitchy ledge grab and raise Mario more than 150 units (though 238 units is the max possible raise).		Given these conditions, a ledge grab normally raises Mario between 30 units (inclusive) and 150 units (exclusive). However, it's possible to exploit this logic to do a glitchy ledge grab and raise Mario more than 150 units (though 238 units is the max possible raise).

	~~Anyway, the condition that makes glitchy~~ ledge grabs rarely possible in practice is that there ~~can't~~ be a wall 150 units above Mario. Fortunately, even minor deviations from perfect geometry can cause there to be no wall 150 units above Mario. For example:		Glitchy ledge grabs are rarely possible in practice due to the fact that there cannot be a wall 150 units above Mario. Fortunately, even minor deviations from perfect geometry can cause there to be no wall 150 units above Mario. For example:
	(1) If the wall is slightly slanted forward		(1) If the wall is slightly slanted forward
	(2) If there are 2 walls meant to be coplanar that aren't		(2) If there are 2 walls meant to be coplanar that aren't
	(3) If there are 2 parallel walls with the lower one jutting out more		(3) If there are 2 parallel walls with the lower one jutting out more



			{{actions}}

SuperHamster: Bolding title in lead

2021-05-02T04:07:55Z

Bolding title in lead

← Older revision		Revision as of 04:07, 2 May 2021
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	{{rewrite}}		{{rewrite}}
	{{needs_image}}		{{needs_image}}
	A ledge grab works as follows: While Mario is falling with non-positive vertical speed, the game checks if there's a wall 30 units above him and that there's no wall 150 units above him. If this passes, then it considers a point 60 units towards the wall from Mario (i.e. 10 units into the wall) and 160 units above Mario. It then checks what the highest floor is from 78 units above that point to 100 units below that point. If a floor is found, then Mario grabs the ledge.		A '''ledge grab''' works as follows: While Mario is falling with non-positive vertical speed, the game checks if there's a wall 30 units above him and that there's no wall 150 units above him. If this passes, then it considers a point 60 units towards the wall from Mario (i.e. 10 units into the wall) and 160 units above Mario. It then checks what the highest floor is from 78 units above that point to 100 units below that point. If a floor is found, then Mario grabs the ledge.

	Given these conditions, a ledge grab normally raises Mario between 30 units (inclusive) and 150 units (exclusive). However, it's possible to exploit this logic to do a glitchy ledge grab and raise Mario more than 150 units (though 238 units is the max possible raise).		Given these conditions, a ledge grab normally raises Mario between 30 units (inclusive) and 150 units (exclusive). However, it's possible to exploit this logic to do a glitchy ledge grab and raise Mario more than 150 units (though 238 units is the max possible raise).

Stick: stole from pannen lul, surprised we dont have a page on this yet tbh

2020-05-09T08:42:41Z

stole from pannen lul, surprised we dont have a page on this yet tbh

New page

{{stub}}
{{rewrite}}
{{needs_image}}
A ledge grab works as follows: While Mario is falling with non-positive vertical speed, the game checks if there's a wall 30 units above him and that there's no wall 150 units above him. If this passes, then it considers a point 60 units towards the wall from Mario (i.e. 10 units into the wall) and 160 units above Mario. It then checks what the highest floor is from 78 units above that point to 100 units below that point. If a floor is found, then Mario grabs the ledge.

Given these conditions, a ledge grab normally raises Mario between 30 units (inclusive) and 150 units (exclusive). However, it's possible to exploit this logic to do a glitchy ledge grab and raise Mario more than 150 units (though 238 units is the max possible raise).

Anyway, the condition that makes glitchy ledge grabs rarely possible in practice is that there can't be a wall 150 units above Mario. Fortunately, even minor deviations from perfect geometry can cause there to be no wall 150 units above Mario. For example:
(1) If the wall is slightly slanted forward
(2) If there are 2 walls meant to be coplanar that aren't
(3) If there are 2 parallel walls with the lower one jutting out more