# Glitch City Laboratories Archives

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## Emulation &amp; ROM Hacking

### Map hacking? - Page 1

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#### Map hacking?

Posted by: HTMLCODER.exe
Date: 2008-11-26 16:52:16
I've been fiddling with the memviewer in VBA, and I guess I've found something funny… These seem to be the map current x,y offsets [attachment=1](I circled in red these I am completely sure of, and some besides them I need to check.) . Setting these to FF (;) caused some funny effects to the poor New Bark Town…[attachment=2] . Also, it seemed like all objects and movement permission data were in their normal places, but map tiles got.. uh… scrambled, resulting in some black void, Jesus-esque water-walking, tree-climbing and so on. The condition is cancelled by triggering any event - talking to soeone, walking outside the town (as I haven't any pokemon) or entering a house. The FF FF setting transferred me to where the PLAYER's house douur would be.
EDIT:
the top two of circled values seem to do nothing. Also, found something funny in VRAM, offsets at 8000…:
[attachment=3]
offset: 8000
8x16 bit each quarter of the sprite
1 row = 16 bit 2 bit for each pixel
also, 4x16x8 for each image
512 bits== 64 bytes pr image
images:
8000: player>
8000-803A
1: down, static
8040-807A
2: up, static
8080-80BA
3: side, static //both left and right, since it just gets mirrorred
80C0-819A
??? Filled with Fs and 0s
the bits are interleaved.
1234====0011001101010101
(1,2,3,4 stands for a color in a 4-color palette)
More to come!
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