Cave Skip - Revision history

Ruh at 19:51, 2 May 2026

2026-05-02T19:51:34Z

← Older revision		Revision as of 19:51, 2 May 2026
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	'''Cave Skip''' is a skip in [[Jak 3]] that allows Jak to enter the metal head infested cave earlier than intended. Doing so allows Jak to trigger the ''Destroy Eggs in Cave'' mission earlier than intended, resulting in a [[Percentage Warp\|percentage warp]].		'''Cave Skip''' is a skip in [[Jak 3]] that allows Jak to enter the metal head infested cave earlier than intended. Doing so allows Jak to trigger the ''Destroy Eggs in Cave'' mission earlier than intended, resulting in a [[Percentage Warp\|percentage warp]].

	== Tutorial ==		= Tutorial =
	<youtube> https://youtu.be/QcjKdZ8FqVk?t=833 </youtube>		<youtube> https://youtu.be/QcjKdZ8FqVk?t=833 </youtube>

	== Technical ==		= Technical =
			[[File:Cave Skip Demonstration Debug.gif\|frame\|Cave Skip being performed with debug visuals to show the actor sphere moving.]]
	Several methods for bypassing the egg wall have been discovered over the years, though most are now obsolete. The latest version of the skip uses the Tough Puppy vehicle to create a gap in the egg wall's actor collision sphere, allowing Jak to pass through.		Several methods for bypassing the egg wall have been discovered over the years, though most are now obsolete. The latest version of the skip uses the Tough Puppy vehicle to create a gap in the egg wall's actor collision sphere, allowing Jak to pass through.

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	One minor version difference to note is that on the [https://opengoal.dev OpenGOAL] PC port, the egg wall only seems to be pushed to the left, leaving a gap on the right. However, on all other versions, the egg wall can move either left or right and leave a gap on either side.		One minor version difference to note is that on the [https://opengoal.dev OpenGOAL] PC port, the egg wall only seems to be pushed to the left, leaving a gap on the right. However, on all other versions, the egg wall can move either left or right and leave a gap on either side.

			= Discovery =


	{{Skips}}		{{Skips}}

Ruh: /* Technical */

2026-05-02T19:06:23Z

Technical

← Older revision		Revision as of 19:06, 2 May 2026
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	Several methods for bypassing the egg wall have been discovered over the years, though most are now obsolete. The latest version of the skip uses the Tough Puppy vehicle to create a gap in the egg wall's actor collision sphere, allowing Jak to pass through.		Several methods for bypassing the egg wall have been discovered over the years, though most are now obsolete. The latest version of the skip uses the Tough Puppy vehicle to create a gap in the egg wall's actor collision sphere, allowing Jak to pass through.

	The cave entrance itself has no level collision. Instead, the developers used an actor with its own <code>collide-shape-prim-mesh</code>, allowing it to be culled after the cutscene in which Sig destroys it with the Peacemaker plays.		The cave entrance itself has no level collision for blocking entry. Instead, the developers used an actor with its own <code>collide-shape-prim-mesh</code>, allowing it to be culled after the cutscene in which Sig destroys it with the Peacemaker plays.

	When you wedge the Tough Puppy vehicle close enough to the wall, the <code>collide-shapes</code> of the vehicle's tires slightly clip inside the collision of the wall's actor collision sphere. There is a method the game uses to avoid actors clipping into each other like this called <code>[https://github.com/open-goal/jak-project/blob/36d8213dfbb10c15e3537b6347e8414185084c6b/goal_src/jak3/engine/collide/collide-shape.gc#L2333 do-push-aways]</code>, which runs after a <code>should-push-away-test</code> succeeds.		When you wedge the Tough Puppy vehicle close enough to the wall, the <code>collide-shapes</code> of the vehicle's tires slightly clip inside the collision of the wall's actor collision sphere. There is a method the game uses to avoid actors clipping into each other like this called <code>[https://github.com/open-goal/jak-project/blob/36d8213dfbb10c15e3537b6347e8414185084c6b/goal_src/jak3/engine/collide/collide-shape.gc#L2333 do-push-aways]</code>, which runs after a <code>should-push-away-test</code> succeeds.

Ruh at 19:04, 2 May 2026

2026-05-02T19:04:40Z

← Older revision		Revision as of 19:04, 2 May 2026
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	'''Cave Skip''' ~~refers~~ to ~~entering~~ the metal head infested cave ~~in the desert early and Percentage Warping~~ to the ~~mission~~ Destroy Eggs In Cave earlier than intended~~. This glitch is primarily utilized~~ in ~~the No Out of Bounds Restricted category~~.		'''Cave Skip''' is a skip in [[Jak 3]] that allows Jak to enter the metal head infested cave earlier than intended. Doing so allows Jak to trigger the ''Destroy Eggs in Cave'' mission earlier than intended, resulting in a [[Percentage Warp\|percentage warp]].

	== Tutorial ==		== Tutorial ==
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	== Technical ==		== Technical ==
	~~Throughout the years there were various~~ methods ~~discovered~~ for bypassing the egg wall ~~that is supposed to block your entry into said cave~~ most ~~of these~~ are now obsolete ~~but one method is still utilized in~~ the ~~No Out of Bounds Restricted Category. This variant works by wedging~~ the Tough Puppy vehicle ~~into the bottom of~~ the egg wall. The entrance ~~to the cave~~ has no level collision ~~blocking it~~, the developers ~~instead utilized~~ an actor ~~that has~~ its own collide-shape-prim-mesh ~~which allowed them~~ to ~~cull the actor~~ after the cutscene of Sig ~~destroying~~ it with the ~~peacemaker played~~. When you wedge the ~~tough puppy~~ vehicle close enough to the wall the collide-shapes of the ~~cars~~ tires slightly clip inside the collision of the wall ~~actor~~'s collision sphere. ~~Theres~~ a method the game uses to avoid actors clipping into each other like this called [https://github.com/open-goal/jak-project/blob/36d8213dfbb10c15e3537b6347e8414185084c6b/goal_src/jak3/engine/collide/collide-shape.gc#L2333 do-push-aways] which runs after a should-push-away-test succeeds. If the ~~car~~ is positioned correctly this can push the wall actor far enough away to leave a gap between where it used to be located and the main levels collision big enough to drive the car into the cave and make your way far enough in to hit the trigger that ~~Percentage Warps~~ you to the Destroy Eggs In Cave mission. One minor version difference to note is that at the ~~time of writing on Opengoal~~ the ~~eggwall~~ only seems to be pushed to the left leaving a gap on the right ~~but~~ on ~~PS2 and presumably~~ all other ~~console~~ versions the ~~eggwall~~ can move either left or right and leave a gap on either side.		Several methods for bypassing the egg wall have been discovered over the years, though most are now obsolete. The latest version of the skip uses the Tough Puppy vehicle to create a gap in the egg wall's actor collision sphere, allowing Jak to pass through.

			The cave entrance itself has no level collision. Instead, the developers used an actor with its own <code>collide-shape-prim-mesh</code>, allowing it to be culled after the cutscene in which Sig destroys it with the Peacemaker plays.

			When you wedge the Tough Puppy vehicle close enough to the wall, the <code>collide-shapes</code> of the vehicle's tires slightly clip inside the collision of the wall's actor collision sphere. There is a method the game uses to avoid actors clipping into each other like this called <code>[https://github.com/open-goal/jak-project/blob/36d8213dfbb10c15e3537b6347e8414185084c6b/goal_src/jak3/engine/collide/collide-shape.gc#L2333 do-push-aways]</code>, which runs after a <code>should-push-away-test</code> succeeds.

			If the Tough Puppy is positioned correctly, this can push the wall actor far enough away to leave a gap between where it used to be located and the main levels collision big enough to drive the car into the cave and make your way far enough in to hit the trigger that percentage warps you to the ''Destroy Eggs in Cave'' mission.

			One minor version difference to note is that on the [https://opengoal.dev OpenGOAL] PC port, the egg wall only seems to be pushed to the left, leaving a gap on the right. However, on all other versions, the egg wall can move either left or right and leave a gap on either side.


	{{Skips}}		{{Skips}}

Ruh at 18:43, 2 May 2026

2026-05-02T18:43:34Z

← Older revision		Revision as of 18:43, 2 May 2026
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	Cave Skip refers to entering the metal head infested cave in the desert early and Percentage Warping to the mission Destroy Eggs In Cave earlier than intended. This glitch is primarily utilized in the No Out of Bounds Restricted category.		'''Cave Skip''' refers to entering the metal head infested cave in the desert early and Percentage Warping to the mission Destroy Eggs In Cave earlier than intended. This glitch is primarily utilized in the No Out of Bounds Restricted category.

	== Tutorial ==		== Tutorial ==

Ruh at 18:42, 2 May 2026

2026-05-02T18:42:46Z

← Older revision		Revision as of 18:42, 2 May 2026
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	~~== Cave Skip ==~~
	Cave Skip refers to entering the metal head infested cave in the desert early and Percentage Warping to the mission Destroy Eggs In Cave earlier than intended. This glitch is primarily utilized in the No Out of Bounds Restricted category.		Cave Skip refers to entering the metal head infested cave in the desert early and Percentage Warping to the mission Destroy Eggs In Cave earlier than intended. This glitch is primarily utilized in the No Out of Bounds Restricted category.

Ruh at 18:42, 2 May 2026

2026-05-02T18:42:31Z

← Older revision		Revision as of 18:42, 2 May 2026
Line 7:		Line 7:
	== Technical ==		== Technical ==
	Throughout the years there were various methods discovered for bypassing the egg wall that is supposed to block your entry into said cave most of these are now obsolete but one method is still utilized in the No Out of Bounds Restricted Category. This variant works by wedging the Tough Puppy vehicle into the bottom of the egg wall. The entrance to the cave has no level collision blocking it, the developers instead utilized an actor that has its own collide-shape-prim-mesh which allowed them to cull the actor after the cutscene of Sig destroying it with the peacemaker played. When you wedge the tough puppy vehicle close enough to the wall the collide-shapes of the cars tires slightly clip inside the collision of the wall actor's collision sphere. Theres a method the game uses to avoid actors clipping into each other like this called [https://github.com/open-goal/jak-project/blob/36d8213dfbb10c15e3537b6347e8414185084c6b/goal_src/jak3/engine/collide/collide-shape.gc#L2333 do-push-aways] which runs after a should-push-away-test succeeds. If the car is positioned correctly this can push the wall actor far enough away to leave a gap between where it used to be located and the main levels collision big enough to drive the car into the cave and make your way far enough in to hit the trigger that Percentage Warps you to the Destroy Eggs In Cave mission. One minor version difference to note is that at the time of writing on Opengoal the eggwall only seems to be pushed to the left leaving a gap on the right but on PS2 and presumably all other console versions the eggwall can move either left or right and leave a gap on either side.		Throughout the years there were various methods discovered for bypassing the egg wall that is supposed to block your entry into said cave most of these are now obsolete but one method is still utilized in the No Out of Bounds Restricted Category. This variant works by wedging the Tough Puppy vehicle into the bottom of the egg wall. The entrance to the cave has no level collision blocking it, the developers instead utilized an actor that has its own collide-shape-prim-mesh which allowed them to cull the actor after the cutscene of Sig destroying it with the peacemaker played. When you wedge the tough puppy vehicle close enough to the wall the collide-shapes of the cars tires slightly clip inside the collision of the wall actor's collision sphere. Theres a method the game uses to avoid actors clipping into each other like this called [https://github.com/open-goal/jak-project/blob/36d8213dfbb10c15e3537b6347e8414185084c6b/goal_src/jak3/engine/collide/collide-shape.gc#L2333 do-push-aways] which runs after a should-push-away-test succeeds. If the car is positioned correctly this can push the wall actor far enough away to leave a gap between where it used to be located and the main levels collision big enough to drive the car into the cave and make your way far enough in to hit the trigger that Percentage Warps you to the Destroy Eggs In Cave mission. One minor version difference to note is that at the time of writing on Opengoal the eggwall only seems to be pushed to the left leaving a gap on the right but on PS2 and presumably all other console versions the eggwall can move either left or right and leave a gap on either side.


			{{Skips}}

Xyphles: Baseline explanation of how cave skip functions. needs more work, visuals, more detail, etc.

2026-04-29T17:05:35Z

Baseline explanation of how cave skip functions. needs more work, visuals, more detail, etc.

New page

== Cave Skip ==
Cave Skip refers to entering the metal head infested cave in the desert early and Percentage Warping to the mission Destroy Eggs In Cave earlier than intended. This glitch is primarily utilized in the No Out of Bounds Restricted category.

== Tutorial ==
<youtube> https://youtu.be/QcjKdZ8FqVk?t=833 </youtube>

== Technical ==
Throughout the years there were various methods discovered for bypassing the egg wall that is supposed to block your entry into said cave most of these are now obsolete but one method is still utilized in the No Out of Bounds Restricted Category. This variant works by wedging the Tough Puppy vehicle into the bottom of the egg wall. The entrance to the cave has no level collision blocking it, the developers instead utilized an actor that has its own collide-shape-prim-mesh which allowed them to cull the actor after the cutscene of Sig destroying it with the peacemaker played. When you wedge the tough puppy vehicle close enough to the wall the collide-shapes of the cars tires slightly clip inside the collision of the wall actor's collision sphere. Theres a method the game uses to avoid actors clipping into each other like this called [https://github.com/open-goal/jak-project/blob/36d8213dfbb10c15e3537b6347e8414185084c6b/goal_src/jak3/engine/collide/collide-shape.gc#L2333 do-push-aways] which runs after a should-push-away-test succeeds. If the car is positioned correctly this can push the wall actor far enough away to leave a gap between where it used to be located and the main levels collision big enough to drive the car into the cave and make your way far enough in to hit the trigger that Percentage Warps you to the Destroy Eggs In Cave mission. One minor version difference to note is that at the time of writing on Opengoal the eggwall only seems to be pushed to the left leaving a gap on the right but on PS2 and presumably all other console versions the eggwall can move either left or right and leave a gap on either side.