The Watermelon wrote:
On 2/10/07, *Gerard Krol* <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
Hi all,
As some of you may know, power required and hit points of droid parts
are stored in central arrays. Individual body types are an index into
this array and are used like this:
(asBodyStats + psTemplate->asParts[COMP_BODY])->buildPower
The code in intSetTemplatePowerShadowStats and
intSetTemplateBodyShadowStats did store a pointer in this index by
using
the difference with the asBodyStats address, so that after this
addition
the correct address would magically reappear. Guilty code looks
like this:
compTempl.asParts[COMP_BODY] = (BODY_STATS *)psStats - asBodyStats;
Funny thing is: on 64bit: sizeof(SDWORD) < sizeof(void*)
In the attached patch, the calls to calcTemplatePower and
calcTemplateBody were removed, and the (simple) formula's used for
calculation were directly included in the two modified functions.
- Gerard
I think that kind of stuff is everywhere in the source,at least I saw
multiple instances of 'weapId = psStats - asWeaponStats' or 'psStats =
asWeaponStats + weaponId'.
In most of the case psStats points to an member of the array
asWeaponStats. In that case weaponId is a small integer (0 to about a
max of 40) and the code is correct.
The bug is by the way exposed if you design a new droid, put a system on
it (sensor for example) and then hover your mouse over another system
(like the construction unit). The game then segfaults.
- Gerard
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