Ovewrite/patching Options

[Andyr]

Are the changes made in this mod file direct copy overwrites, or are they done by patching?

[aigleborgne]

Well, hopefully the 'source parameter' and the 'overwriting parameter', isn't, say, adding a spell, and changing an item name, respectively.  If the 'overwriting parameter' does not read offsets and byte-patches the item, then it will clearly miss (due to changed offsets by adding a spell) and corrupt the item file.

For example, if I decide to add the spell 'Globe of Invulnerability' to a creature, than another mod decides to change that creature's 'Staffspear+3' to a normal 'Staff', then the second mod must ensure that they don't just WRITE_ASCII 0x3f0 ~STAF01~ #8.  Not that that will ever happen, I hope. 

I didn't understand your example.

I know it would overwrite the staff+3 by a normal staff. But I don't see the point with the globe.

Why would the item be corrupted? (and I think you meant the cre)

Currently, in my tp2, I have line like:
// Sorcerous sundries store
COPY_EXISTING ~_sto0703.sto~ ~override/_sto0703.sto~
ADD_STORE_ITEM + ~_wand10~ #5 #0 #0 ~IDENTIFIED~ #1 // wand of summoning
ADD_STORE_ITEM ~scrlar~ #1 #0 #0 ~IDENTIFIED~ #3 // new scroll : sunfire


// items
COPY_EXISTING ~_RAMAZI.cre~ ~override~
PATCH_IF (SOURCE_SIZE > 0x2d3) THEN BEGIN // protects against invalid files
ADD_CRE_ITEM ~rin95~ #0 #0 #0 ~undroppable~ ~LRING~
ADD_CRE_ITEM ~BOOT_09~ #0 #0 #0 ~undroppable~ ~BOOTS~
ADD_CRE_ITEM ~ap#ele~ #0 #0 #0 ~undroppable~ ~RRING~
END
BUT_ONLY_IF_IT_CHANGES

Is that not correct?
I know they will overwrite old ring or boot, but it is intended.

This post has been edited by aigleborgne: Dec 22 2005, 02:09 PM