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Brock through walls: Difference between revisions
→Brock Fly
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==Explanation==
As mentioned above, the glitch works by tricking the game into loading an invalid path (path pointer) for the player to follow.
The game never seems to intentionally set $CD3B to any nonzero value, but its effect is to allow certain joypad inputs to override scripted movement. It is very generous: As long as the player is holding down any of the specified buttons, the entire joypad input is accepted. For example, if the B button is able to override, then the player can simple hold down the B button to be able to walk in any direction or to stay put.
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This variant is named "Brock Fly" because "Trainer Fly" is a more commonly known name for the trainer escape glitch, but of course other escape methods (Teleport, Dig/Escape Rope, death-warp) can also be used.
The bytes in the path pointer that replace $CD2D and $CD2E correspond with (path pointer)+52 (0x34) and (path pointer)+53 (0x35). For example, for the custom path E7DA (DAE7) in Yellow (assuming it has no 0xFF until after $DB36), a 0x15 at $DB1B (PC Pokémon 5 HP (modulo 256)), and 0x14 at $DB1C (PC Pokémon 5 level) would result in 0x15 at $CD2D and 0x14 at $CD2E. Hence, the Pokémon encountered would be a Level 20 Mew. (In Red/Blue the equivalent path would be E8DA).
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