NPC collision bypassing glitch: Difference between revisions

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[[File:NPC through Cable Club.gif|frame|right|An NPC behind the Cable Club in Cerulean City Pokémon Center.]]
[[File:NPC through Cable Club.gif|frame|right|An NPC behind the Cable Club in Cerulean City Pokémon Center.]]
The '''NPC and Cable Club lady glitch''' is a [[glitch]] in {{RB}}. It was documented by Roelof and recorded by ChickasaurusGL.
The '''NPC collision bypassing glitches''' describe [[glitch]]es in {{RB}} in which an NPC walks through another NPC or object.


On very rare occasions, the NPC who tells the player about Bill in the Cerulean City Pokémon Center will walk through the Cable Club lady, allowing him to access the space behind her.
This glitch was documented by Roelof and recorded by ChickasaurusGL, in which an NPC would walk through through the Cable Club lady.

==Analysis==
[https://forums.glitchcity.info/index.php?topic=8659.0 According to Bbbbbbbbba] from the forums, the glitch can be recreated if one of the following criteria is met:

1. The game is saved at "exactly at the frame when the walking NPC was ready to move, but hadn't decided in which direction yet.", and then the game is saved and reset.

2. If the Start menu is opened, at the same time as 1., and that this action obscures the sprite.

It is possible to recreate the glitch on an emulator by observing the correct memory address at wSpriteStateData2 (represented by $C2x8) for the given NPC{{clarify}}.

This address controls when a walking NPC is going to make their next step. If $C2x8 is 0x01, either saving the game or obscuring the sprite with the Start menu may replicate the glitch.

{{clr}}
==Youtube Video==
==Youtube Video==
{{Youtube|2u4M_d5aLcM|ChickasaurusGL}}
{{Youtube|2u4M_d5aLcM|ChickasaurusGL}}

[[Category:Generation I glitches]]
[[Category:Generation I glitches]]

Revision as of 12:26, 22 February 2019

An NPC behind the Cable Club in Cerulean City Pokémon Center.

The NPC collision bypassing glitches describe glitches in Pokémon Red and Blue in which an NPC walks through another NPC or object.

This glitch was documented by Roelof and recorded by ChickasaurusGL, in which an NPC would walk through through the Cable Club lady.

Analysis

According to Bbbbbbbbba from the forums, the glitch can be recreated if one of the following criteria is met:

1. The game is saved at "exactly at the frame when the walking NPC was ready to move, but hadn't decided in which direction yet.", and then the game is saved and reset.

2. If the Start menu is opened, at the same time as 1., and that this action obscures the sprite.

It is possible to recreate the glitch on an emulator by observing the correct memory address at wSpriteStateData2 (represented by $C2x8) for the given NPC[clarification needed].

This address controls when a walking NPC is going to make their next step. If $C2x8 is 0x01, either saving the game or obscuring the sprite with the Start menu may replicate the glitch.


Youtube Video

YouTube video by ChickasaurusGL