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Meta-map script activation: Difference between revisions
→Manually setting up a glitch script with stored PC items
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Setting up the dry underflow glitch with stored PC items allows the player to manipulate certain meta-map scripts by modifying the item past item 50.
For example, item 100's quantity controls the map script for Route 8 (address D601 in Red/Blue, D600 in Yellow). Though a quantity of 1 for this item will set up a CD2D/Special-stat encounter (as if activating the Trainer escape glitch), out of bounds values are glitch scripts associated with this glitch. As in the usual Trainer escape glitch, bit 0 of $CD60 and $D730 must not be set for the CD2D/Special-stat encounter to appear. If the encounter doesn't occur even after preparing the Special stat/or CD2D, the player still has to reset them by changing boxes and resetting the game, and pushing a Strength boulder/having another Trainer walk up to the player [[Trainer escape glitch#Special stat encounter|etc.]]
This method is ideal for altering a meta-map script at ease, especially if it corresponds to an item quantity. The player may also be able to manipulate all 256 meta-map scripts for the map (but if the script corresponds with an item, manipulating a Cancel (0xFF) for script 255 might be harder). Furthermore, as there are only 256 item/quantity pairs in the expanded PC and the addresses after item 128 quantity are a mirror of items 1-128 again, it is usually only possible to corrupt up to D63A (W_MANSION1CURSCRIPT) in Red/Blue or D639 (both W_CINNABARISLANDCURSCRIPT and W_MANSION1CURSCRIPT) in Yellow this way.
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