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IsSpellUsable() and Swiftmend spell - WoWInterface
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10-02-22, 01:27 PM   #1
Basil2
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Question IsSpellUsable() and Swiftmend spell

IsSpellUsable() for Swiftmend always return false unless you have a unit with hots in your target.

However, WoW UI is more adequate. If you have a macro "/cast [@player] Swiftmend", the macro's spell icon is showed as available when hots are on player (not on target).

So is there any chance to have such behavior with IsSpellUsable()?
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10-02-22, 07:17 PM   #2
SDPhantom
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Macros and IsUsableSpell() have very different mechanics behind them. ActionButtons (and by extension macros) are handled by C code. We don't get access to those methods.

IsUsableSpell() has very basic capability, like "Can I afford the resource cost?", "Did I just dodge/parry?", etc. It doesn't have the capability to check what buffs/debuffs the target has.
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10-02-22, 08:38 PM   #3
Kanegasi
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You can use SecureCmdOptionParse to evaluate macro conditions for use in an addon.

In your case, you would use local action, target = SecureCmdOptionParse("[@player] Swiftmend") which should return the strings "Swiftmend" and "player" if valid, and both nil if not valid.
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10-03-22, 12:52 PM   #4
SDPhantom
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It still doesn't do any buff checking like the OP was asking for. It just checks whether the macro conditions are true and returns the option and target it finds. [@player] always evaluates to true, so it'll always return the spell name and "player" regardless of anything else.
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10-04-22, 11:00 AM   #5
Basil2
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Thank you for help, I'll try SecureCmdOptionParse.
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10-05-22, 01:41 PM   #6
Basil2
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Originally Posted by SDPhantom View Post
IsUsableSpell() has very basic capability, like "Can I afford the resource cost?", "Did I just dodge/parry?", etc. It doesn't have the capability to check what buffs/debuffs the target has.
Actually, IsUsableSpell() does check for buffs. But do it for target only.
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10-05-22, 01:43 PM   #7
Basil2
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Originally Posted by Kanegasi View Post
You can use SecureCmdOptionParse to evaluate macro conditions for use in an addon.
I have tried. It looks like that SecureCmdOptionParse() makes parsing only. It doesn't check spell conditions - just extracts spell name and spell destination.
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WoWInterface » Developer Discussions » Lua/XML Help » IsSpellUsable() and Swiftmend spell

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