Extra GI items for chests#188
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Initializing the chest (EN_BOX) with an X rotation above 0 (actor list for rooms) will point to the item to contain instead of the param value instead. If it's 0 then the param sets the item as before again. To my knowledge no vanilla chest in OoT (but MM does) ever initializes a chest with a X rotation other than 0.
The advantage of using the X rotation is that it would be possible to support a much larger range of GI (Get Item) values. In vanilla param is already used in combination with other variables, so all set GI indexes only work within a range between 0x20 and 0xFE0 (0x20 increases per index), which is a maximum of 127 different GI values. Since X rotation goes unused it could support up to 0xFFFF different GI values, but that's really overkill and for the time being it's set to using 8 bits (so 256 - 1 different GI values).