Snippet DamageType

Dirac

22710180
JASS:
library DamageType /* v1.0.1

*/uses/*
*/  Damage  /* thehelper.net/forums/showthread.php/168144-Damage-Struct

A useful tool for creating custom damage types.

***********************************************************************
*
*   function UnitDamageTargetEx takes unit source, unit target, real amount, 
*   integer damageType, boolean considerArmor returns nothing
*       -   Deals custom type damage, will fire functions registered to
*       -   it.
*
***********************************************************************
*
*   struct DamageType
*
*       -   Creates custom damage types that are evaluated only when
*       -   dealt through the UnitDamageTargetEx function.
*
*       static method create takes nothing returns DamageType
*           -   Creates a new damage type.
*       method register takes code func returns triggercondition
*           -   Registers the function to the damage type.
*       method unregister takes triggercondition whichCondition returns nothing
*           -   Unregisters the function from the damage type.
*
***********************************************************************
    
This needs to be a textmacro in order to keep the encapsulation correct
and private within the Damage library. Consider this textmacro private.

**********************************************************************/

//! textmacro DAMAGE_TYPE_EX1
    globals
        private trigger array DamageTypeTrig
        private integer       DamageTypeEvent = 0
    endglobals
    
    //*********************************************************************
    //  This function will make damage dealt pass through the custom damage
    //  type's filter.
    function UnitDamageTargetEx takes unit source, unit target, real amount, integer damageType, boolean considerArmor returns nothing
        local integer prevType=DamageTypeEvent
        set DamageTypeEvent=damageType
        if considerArmor then
            call UnitDamageTarget(source,target,amount,true,false,ATTACK_TYPE_CHAOS,DAMAGE_TYPE_NORMAL,null)
        else
            call UnitDamageTarget(source,target,amount,true,false,ATTACK_TYPE_CHAOS,DAMAGE_TYPE_UNIVERSAL,null)
        endif
        set DamageTypeEvent=prevType
    endfunction
    
    struct DamageType extends array
        private static thistype size = 0
        
        //*********************************************************************
        //  Only the corresponding trigger created for the damage type will be
        //  evaluated once the damage is dealt.
        static method create takes nothing returns thistype
            set size=size+1
            set DamageTypeTrig[size]=CreateTrigger()
            return size
        endmethod
        
        method register takes code func returns triggercondition
            return TriggerAddCondition(DamageTypeTrig[this],Filter(func))
        endmethod
        
        method unregister takes triggercondition whichCondition returns nothing
            call TriggerRemoveCondition(DamageTypeTrig[this],whichCondition)
        endmethod
    endstruct
//! endtextmacro

//! textmacro DAMAGE_TYPE_EX2

    //*********************************************************************
    //  Fires the trigger using the custom damage type as an array index.
    call TriggerEvaluate(DamageTypeTrig[DamageTypeEvent])
//! endtextmacro
endlibrary
 

Bribe

vJass errors are legion
I imagine the importing instructions require the user to delete Jesus4Lyf's UDTEx, and implement these textmacros instead.

Why not have the importing instructions already documented?
 

Dirac

22710180
I'll add implementation instructions to the main library explaining why you should remove J4L's Damage from your map
 
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