Filter(struct)

[Arhowk]

Im trying to do

call TriggerAddCondition(t, Filter(this.add))

but it keeps telling me that "this is not an struct name)

if i do thistype.add it asks for a static method but i dont want to pass a static method...

 

[Tirlititi]

You have no choice, a filter function must be a function that takes nothing and returns boolean. However, non-static method are replaced by functions that take at least 1 argument ("this" is an argument in the compiled jass code).

You have to use a handle-link system (such as an hashtable but there are better ones around there), to link your structure instance to the trigger :

struct Smth

    unit u
    static hashtable TheHash = InitHashtable()

    static method add takes nothing returns boolean
        local thistype this = LoadInteger(TheHash, GetTriggeringTrigger(), 0)
        return IsUnitType(this.u, UNIT_TYPE_DEAD)
    endmethod

    static method create takes unit whichUnit returns thistype
        local thistype this = thistype.allocate()
        local trigger t = CreateTrigger()
        set this.u = whichUnit
        call SaveInteger(TheHash, t, 0, this)
        call TriggerAddCondition(t, Filter(thistype.add))
        // etc...
    endmethod

endstruct

That's just a sample.

 

[moyackx]

Im trying to do

call TriggerAddCondition(t, Filter(this.add))

but it keeps telling me that "this is not an struct name)

if i do thistype.add it asks for a static method but i dont want to pass a static method...

call TriggerAddCondition(t, Filter(<struct name>.add))

In this way it will work...

this and thistype are keywords that only work INSIDE the struct, not outside of it.