'Table'-like Groupdata thing

01-07-2009, 05:52 AM

I saw Vexorian's 'Table' and I considered making something like it - but for groups of objects. I don't know why, it seemed like a good idea.

I don't know if the U2I, D2I, It2I, etc. are redundant for H2I. Are they?
I also don't know if B2I works. Do they work?

This script is supposed to make it easy to store groups of stuff, which don't necessarily need to be of the same type ('handle', 'unit', integer, etc.).
You can pick out the first, or a random thing, or a certain thing, or a thing matching a definition, from a group. Because these are all in a struct, you can share this data (I think...zzz); you can recycle the struct... etc...

Each GroupData object is a bunch of groups that take up one 'mission' in the script's own gamecache. Each item in a group is associated with a 'key' that is: the group's label + its index in the group (I2S(thing) style gotten from 'Table').

Save stuff in a group - or singly, if you want - and retrieve them. You can retrieve a random trhing from a group (as PickRandomUnit/Player/whatever) or you can the first-saved thing in the group, or you can get a particular thing by its index in the group (if your way of saving the things in the group is so ordered and not dynamic according to game events), or you can just find which thing in the group matches whatever you are looking for.
NOTE: No 2 groups can use the same label.

Criticism? Anything I should change?

JASS:

library GroupData initializer Init

    function B2I takes boolean value returns integer
        return value
        return 0
    endfunction

    function I2B takes integer value returns boolean
        if value != 0 and value != 1 then
            call ExecuteFunc("A non-real boolean value is being retrieved.")
        endif
        return value
        return false
    endfunction

    function R2IEx takes real value returns integer
        return I2R(value * 100.00)
    endfunction

    function I2REx takes integer value returns real
        return R2I(value) / 100.00
    endfunction

    function U2I takes unit value returns integer
        return value
        return 0
    endfunction

    function I2U takes integer value returns unit
        return value
        return null
    endfunction
   
    function It2I takes item value returns integer
        return value
        return 0
    endfunction
   
    function I2It takes integer value returns item
        return value
        return null
    endfunction
   
    function D2I takes destructable value returns integer
        return value
        return 0
    endfunction
   
    function I2D takes integer value returns destructable
        return value
        return null
    endfunction

globals
    private constant integer MAX_INSTANCES = 8190
    private constant integer MAX_LABELS = 4094 //Total members in a group data = 8190
                                               //.intCountLabel + MAX_LABELS*(.strLabel[]) + MAX_LABELS*(.intLabelCountItem[]) = 8190
                                               //1 + 2(MAX_LABELS) = 8190
                                               //MAX_LABELS = (8190-1)/2
                                               //           = 4094
                                               //NOTE: Though the number of Label-Groups
                                               //      are limited (MAX_LABELS), the number of the data
                                               //      that can be stored in one Label-Group is unlimited,
                                               //      as in gamecache.
endglobals

    function interface MatcherFunc takes integer value returns boolean

struct GroupData[MAX_INSTANCES]

    private string array strLabel[MAX_LABELS]
    private integer array intLabelCountItem[MAX_LABELS]
    private integer intCountLabel

    public static method Create takes nothing returns GroupData
        return GroupData.allocate()
    endmethod

    public method GetFromLabelMatching takes string label, MatcherFunc func returns integer
        local integer INT_Index = 0
        local integer INT_Index2 = 0

        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label then
                loop
                    exitwhen INT_Index2 == .intLabelCountItem[INT_Index]
                    if .func.evaluate(GetStoredInteger(GroupData.gc, I2S(this), label+I2S(INT_Index))) then
                        return GetStoredInteger(GroupData.gc, I2S(this), label+I2S(INT_Index))
                    endif
                    set INT_Index2 = INT_Index2 + 1
                endloop
            endif
            set INT_Index = INT_Index + 1
        endloop

        return 0
    endmethod

    public method GetFirstOfLabel takes string label returns integer
        local integer INT_Index = 0

        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label and .intLabelCountItem[INT_Index] > 0 then
                return GetStoredInteger(GroupData.gc, I2S(this), label+I2S(0))
            endif
            set INT_Index = INT_Index + 1
        endloop

        return GetStoredInteger(GroupData.gc, I2S(this), label+I2S(0))
    endmethod
    
    public method GetFromLabel takes string label, integer index returns integer
        local integer INT_Index = 0
        
        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label and index < .intLabelCountItem[INT_Index] then
                return GetStoredInteger(GroupData.gc, I2S(this), label+I2S(index))
            endif
            set INT_Index = INT_Index + 1
        endloop
        
        return 0
    endmethod

    public method GetRandomFromLabel takes string label returns integer
        local integer INT_Index = 0

        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label then
                return GetStoredInteger(GroupData.gc, I2S(this), label+I2S(GetRandomInt(0, .intLabelCountItem[INT_Index])))
            endif
            set INT_Index = INT_Index + 1
        endloop

        return 0
    endmethod

    public method AddLabel takes string label returns boolean
        local integer INT_Index = 0
       
        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label then
                return false
            endif
        endloop

        set .strLabel[.intCountLabel] = label
        set .intCountLabel = .intCountLabel + 1

        return true
    endmethod

    public method RemoveLabel takes string label returns boolean
        local integer INT_Index = 0

        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label then
                call .FlushLabel(label)
                set .intCountLabel = .intCountLabel - 1
                set .strLabel[INT_Index] = .strLabel[.intCountLabel]
                set .strLabel[.intCountLabel] = null

                return true
            endif
        endloop

        return false
    endmethod

    public method AddToLabel takes string label, integer value returns boolean
        local integer INT_Index = 0

        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label then
                call StoreInteger(GroupData.gc, I2S(this), I2S(.intLabelCountItem[INT_Index]), value)
                set .intLabelCountItem[INT_Index] = .intLabelCountItem[INT_Index] + 1
                return true
            endif
            set INT_Index = INT_Index + 1
        endloop

        return false
    endmethod

    public method RemoveFromLabel takes string label, integer value returns boolean
        local integer INT_Index = 0
        local integer INT_Index2 = 0

        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label then
                loop
                    exitwhen INT_Index2 == .intLabelCountItem[INT_Index]
                    if GetStoredInteger(GroupData.gc, I2S(this), .strLabel[INT_Index]+I2S(INT_Index2)) == value then
                        call FlushStoredInteger(GroupData.gc, I2S(this), .strLabel[INT_Index]+I2S(INT_Index2))
                        set .intLabelCountItem[INT_Index] = .intLabelCountItem[INT_Index] - 1
                        call StoreInteger((GroupData.gc, I2S(this), .strLabel[INT_Index]+I2S(INT_Index2, GetStoredInteger(GroupData.gc, I2S(this), .strLabel[INT_Index]+I2S(.intLabelCountItem[INT_Index])))
                        call FlushStoredInteger(GroupData.gc, I2S(this), .strLabel[INT_Index]+I2S(.intLabelCountItem[INT_Index]))
                       
                        return true
                    endif
                    set INT_Index2 = INT_Index2 + 1
                endloop
            endif
            set INT_Index = INT_Index + 1
        endloop

        return false
    endmethod

    public method FlushLabel takes string label returns boolean
        local integer INT_Index = 0
        local integer INT_Index2 = 0

        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label then
                loop
                    exitwhen INT_Index2 == .intLabelCountItem[INT_Index]
                    call FlushStoredInteger(GroupData.gc, I2S(this), .strLabel[INT_Index]+I2S(INT_Index2))
                    set INT_Index2 = INT_Index2 + 1
                endloop
            endif
            set INT_Index = INT_Index + 1
        endloop

        return false
    endmethod

    public method FlishAllLabels takes nothing returns nothing
        call FlushStoredMission(GroupData.gc, I2S(this))
    endmethod

    public method Destroy takes nothing returns nothing
        call .FlushAll()
        set this = 0
    endmethod

    private static gamecache gc = null

    public static method Initialize takes nothing returns nothing
        set GroupData.gc = InitGameCache("GroupData")
    endmethod

endstruct

    private function Init takes nothing returns nothing
        call GroupData.Initialize()
    endfunction

endlibrary

01-07-2009, 10:27 AM

Deaod

call ExecuteFunc("A non-real boolean value is being retrieved.") Youre crashing WC3 on purpose here?
You can simplify the I2B function if you remove that if-statement. Theres no need for it.

Oh, you shouldnt use I2H.

JASS:

    function R2IEx takes real value returns integer
        return I2R(value * 100.00)
    endfunction

    function I2REx takes integer value returns real
        return R2I(value) / 100.00
    endfunction

swap those two...

01-07-2009, 12:44 PM

fX_

JASS:

library GroupData initializer Init

    function B2I takes boolean value returns integer
        return value
        return 0
    endfunction

    function I2B takes integer value returns boolean
        return value
        return false
    endfunction

    function R2IEx takes real value returns integer
        return R2I(value * 100.00)
    endfunction

    function I2REx takes integer value returns real
        return I2R(value) / 100.00
    endfunction

    function U2I takes unit value returns integer
        return value
        return 0
    endfunction

    function I2U takes integer value returns unit
        return value
        return null
    endfunction
  
    function It2I takes item value returns integer
        return value
        return 0
    endfunction
  
    function I2It takes integer value returns item
        return value
        return null
    endfunction
  
    function D2I takes destructable value returns integer
        return value
        return 0
    endfunction
  
    function I2D takes integer value returns destructable
        return value
        return null
    endfunction

globals
    private constant integer MAX_INSTANCES = 8190
    private constant integer MAX_LABELS = 4094 //Total members in a group data = 8190
                                               //.intCountLabel + MAX_LABELS*(.strLabel[]) + MAX_LABELS*(.intLabelCountItem[]) = 8190
                                               //1 + 2(MAX_LABELS) = 8190
                                               //MAX_LABELS = (8190-1)/2
                                               //           = 4094
                                               //NOTE: Though the number of Label-Groups
                                               //      are limited (MAX_LABELS), the number of the data
                                               //      that can be stored in one Label-Group is unlimited,
                                               //      as in gamecache.
endglobals

    function interface MatcherFunc takes integer value returns boolean

struct GroupData[MAX_INSTANCES]

    private string array strLabel[MAX_LABELS]
    private integer array intLabelCountItem[MAX_LABELS]
    private integer intCountLabel

    public static method Create takes nothing returns GroupData
        return GroupData.allocate()
    endmethod

    public method GetFromLabelMatching takes string label, MatcherFunc func returns integer
        local integer INT_Index = 0
        local integer INT_Index2 = 0

        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label then
                loop
                    exitwhen INT_Index2 == .intLabelCountItem[INT_Index]
                    if func.evaluate(GetStoredInteger(GroupData.gc, I2S(this), label+I2S(INT_Index))) then
                        return GetStoredInteger(GroupData.gc, I2S(this), label+I2S(INT_Index))
                    endif
                    set INT_Index2 = INT_Index2 + 1
                endloop
            endif
            set INT_Index = INT_Index + 1
        endloop

        return 0
    endmethod

    public method GetFirstOfLabel takes string label returns integer
        local integer INT_Index = 0

        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label and .intLabelCountItem[INT_Index] > 0 then
                return GetStoredInteger(GroupData.gc, I2S(this), label+I2S(0))
            endif
            set INT_Index = INT_Index + 1
        endloop

        return GetStoredInteger(GroupData.gc, I2S(this), label+I2S(0))
    endmethod
   
    public method GetFromLabel takes string label, integer index returns integer
        local integer INT_Index = 0
       
        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label and index < .intLabelCountItem[INT_Index] then
                return GetStoredInteger(GroupData.gc, I2S(this), label+I2S(index))
            endif
            set INT_Index = INT_Index + 1
        endloop
       
        return 0
    endmethod

    public method GetRandomFromLabel takes string label returns integer
        local integer INT_Index = 0

        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label then
                return GetStoredInteger(GroupData.gc, I2S(this), label+I2S(GetRandomInt(0, .intLabelCountItem[INT_Index])))
            endif
            set INT_Index = INT_Index + 1
        endloop

        return 0
    endmethod

    public method AddLabel takes string label returns boolean
        local integer INT_Index = 0
      
        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label then
                return false
            endif
        endloop

        set .strLabel[.intCountLabel] = label
        set .intCountLabel = .intCountLabel + 1

        return true
    endmethod

    public method RemoveLabel takes string label returns boolean
        local integer INT_Index = 0

        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label then
                call .FlushLabel(label)
                set .intCountLabel = .intCountLabel - 1
                set .strLabel[INT_Index] = .strLabel[.intCountLabel]
                set .strLabel[.intCountLabel] = null

                return true
            endif
        endloop

        return false
    endmethod

    public method AddToLabel takes string label, integer value returns boolean
        local integer INT_Index = 0

        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label then
                call StoreInteger(GroupData.gc, I2S(this), I2S(.intLabelCountItem[INT_Index]), value)
                set .intLabelCountItem[INT_Index] = .intLabelCountItem[INT_Index] + 1
                return true
            endif
            set INT_Index = INT_Index + 1
        endloop

        return false
    endmethod

    public method RemoveFromLabel takes string label, integer value returns boolean
        local integer INT_Index = 0
        local integer INT_Index2 = 0

        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label then
                loop
                    exitwhen INT_Index2 == .intLabelCountItem[INT_Index]
                    if GetStoredInteger(GroupData.gc, I2S(this), .strLabel[INT_Index]+I2S(INT_Index2)) == value then
                        call FlushStoredInteger(GroupData.gc, I2S(this), .strLabel[INT_Index]+I2S(INT_Index2))
                        set .intLabelCountItem[INT_Index] = .intLabelCountItem[INT_Index] - 1
                        call StoreInteger(GroupData.gc, I2S(this), .strLabel[INT_Index]+I2S(INT_Index2), GetStoredInteger(GroupData.gc, I2S(this), .strLabel[INT_Index]+I2S(.intLabelCountItem[INT_Index])))
                        call FlushStoredInteger(GroupData.gc, I2S(this), .strLabel[INT_Index]+I2S(.intLabelCountItem[INT_Index]))
                      
                        return true
                    endif
                    set INT_Index2 = INT_Index2 + 1
                endloop
            endif
            set INT_Index = INT_Index + 1
        endloop

        return false
    endmethod

    public method FlushLabel takes string label returns boolean
        local integer INT_Index = 0
        local integer INT_Index2 = 0

        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label then
                loop
                    exitwhen INT_Index2 == .intLabelCountItem[INT_Index]
                    call FlushStoredInteger(GroupData.gc, I2S(this), .strLabel[INT_Index]+I2S(INT_Index2))
                    set INT_Index2 = INT_Index2 + 1
                endloop
            endif
            set INT_Index = INT_Index + 1
        endloop

        return false
    endmethod

    public method FlushAllLabels takes nothing returns nothing
        call FlushStoredMission(GroupData.gc, I2S(this))
    endmethod

    public method Destroy takes nothing returns nothing
        call .FlushAllLabels()
        set this = 0
    endmethod

    private static gamecache gc = null

    public static method Initialize takes nothing returns nothing
        set GroupData.gc = InitGameCache("GroupData")
    endmethod

endstruct

    private function Init takes nothing returns nothing
        call GroupData.Initialize()
    endfunction

endlibrary

Anything else?

P.S. I tested out I2B(10) and it worked. By and If result == true elseif result == false else run, I found out that it returns something other than true or false. What else can be the value of a boolean besides 'true' and 'false'?

01-07-2009, 01:45 PM	#4
Deaod	JASS: function I2B takes integer i returns boolean return i==1 endfunction that should be safe.

01-07-2009, 09:30 PM

Here-b-Trollz

Quote:

Originally Posted by fX_

JASS:

library GroupData initializer Init

    function B2I takes boolean value returns integer
        return value
        return 0
    endfunction

    function I2B takes integer value returns boolean
        return value
        return false
    endfunction

    function R2IEx takes real value returns integer
        return R2I(value * 100.00)
    endfunction

    function I2REx takes integer value returns real
        return I2R(value) / 100.00
    endfunction

    function U2I takes unit value returns integer
        return value
        return 0
    endfunction

    function I2U takes integer value returns unit
        return value
        return null
    endfunction
  
    function It2I takes item value returns integer
        return value
        return 0
    endfunction
  
    function I2It takes integer value returns item
        return value
        return null
    endfunction
  
    function D2I takes destructable value returns integer
        return value
        return 0
    endfunction
  
    function I2D takes integer value returns destructable
        return value
        return null
    endfunction

globals
    private constant integer MAX_INSTANCES = 8190
    private constant integer MAX_LABELS = 4094 //Total members in a group data = 8190
                                               //.intCountLabel + MAX_LABELS*(.strLabel[]) + MAX_LABELS*(.intLabelCountItem[]) = 8190
                                               //1 + 2(MAX_LABELS) = 8190
                                               //MAX_LABELS = (8190-1)/2
                                               //           = 4094
                                               //NOTE: Though the number of Label-Groups
                                               //      are limited (MAX_LABELS), the number of the data
                                               //      that can be stored in one Label-Group is unlimited,
                                               //      as in gamecache.
endglobals

    function interface MatcherFunc takes integer value returns boolean

struct GroupData[MAX_INSTANCES]

    private string array strLabel[MAX_LABELS]
    private integer array intLabelCountItem[MAX_LABELS]
    private integer intCountLabel

    public static method Create takes nothing returns GroupData
        return GroupData.allocate()
    endmethod

    public method GetFromLabelMatching takes string label, MatcherFunc func returns integer
        local integer INT_Index = 0
        local integer INT_Index2 = 0

        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label then
                loop
                    exitwhen INT_Index2 == .intLabelCountItem[INT_Index]
                    if func.evaluate(GetStoredInteger(GroupData.gc, I2S(this), label+I2S(INT_Index))) then
                        return GetStoredInteger(GroupData.gc, I2S(this), label+I2S(INT_Index))
                    endif
                    set INT_Index2 = INT_Index2 + 1
                endloop
            endif
            set INT_Index = INT_Index + 1
        endloop

        return 0
    endmethod

    public method GetFirstOfLabel takes string label returns integer
        local integer INT_Index = 0

        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label and .intLabelCountItem[INT_Index] > 0 then
                return GetStoredInteger(GroupData.gc, I2S(this), label+I2S(0))
            endif
            set INT_Index = INT_Index + 1
        endloop

        return GetStoredInteger(GroupData.gc, I2S(this), label+I2S(0))
    endmethod
   
    public method GetFromLabel takes string label, integer index returns integer
        local integer INT_Index = 0
       
        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label and index < .intLabelCountItem[INT_Index] then
                return GetStoredInteger(GroupData.gc, I2S(this), label+I2S(index))
            endif
            set INT_Index = INT_Index + 1
        endloop
       
        return 0
    endmethod

    public method GetRandomFromLabel takes string label returns integer
        local integer INT_Index = 0

        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label then
                return GetStoredInteger(GroupData.gc, I2S(this), label+I2S(GetRandomInt(0, .intLabelCountItem[INT_Index])))
            endif
            set INT_Index = INT_Index + 1
        endloop

        return 0
    endmethod

    public method AddLabel takes string label returns boolean
        local integer INT_Index = 0
      
        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label then
                return false
            endif
        endloop

        set .strLabel[.intCountLabel] = label
        set .intCountLabel = .intCountLabel + 1

        return true
    endmethod

    public method RemoveLabel takes string label returns boolean
        local integer INT_Index = 0

        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label then
                call .FlushLabel(label)
                set .intCountLabel = .intCountLabel - 1
                set .strLabel[INT_Index] = .strLabel[.intCountLabel]
                set .strLabel[.intCountLabel] = null

                return true
            endif
        endloop

        return false
    endmethod

    public method AddToLabel takes string label, integer value returns boolean
        local integer INT_Index = 0

        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label then
                call StoreInteger(GroupData.gc, I2S(this), I2S(.intLabelCountItem[INT_Index]), value)
                set .intLabelCountItem[INT_Index] = .intLabelCountItem[INT_Index] + 1
                return true
            endif
            set INT_Index = INT_Index + 1
        endloop

        return false
    endmethod

    public method RemoveFromLabel takes string label, integer value returns boolean
        local integer INT_Index = 0
        local integer INT_Index2 = 0

        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label then
                loop
                    exitwhen INT_Index2 == .intLabelCountItem[INT_Index]
                    if GetStoredInteger(GroupData.gc, I2S(this), .strLabel[INT_Index]+I2S(INT_Index2)) == value then
                        call FlushStoredInteger(GroupData.gc, I2S(this), .strLabel[INT_Index]+I2S(INT_Index2))
                        set .intLabelCountItem[INT_Index] = .intLabelCountItem[INT_Index] - 1
                        call StoreInteger(GroupData.gc, I2S(this), .strLabel[INT_Index]+I2S(INT_Index2), GetStoredInteger(GroupData.gc, I2S(this), .strLabel[INT_Index]+I2S(.intLabelCountItem[INT_Index])))
                        call FlushStoredInteger(GroupData.gc, I2S(this), .strLabel[INT_Index]+I2S(.intLabelCountItem[INT_Index]))
                      
                        return true
                    endif
                    set INT_Index2 = INT_Index2 + 1
                endloop
            endif
            set INT_Index = INT_Index + 1
        endloop

        return false
    endmethod

    public method FlushLabel takes string label returns boolean
        local integer INT_Index = 0
        local integer INT_Index2 = 0

        loop
            exitwhen INT_Index == .intCountLabel
            if .strLabel[INT_Index] == label then
                loop
                    exitwhen INT_Index2 == .intLabelCountItem[INT_Index]
                    call FlushStoredInteger(GroupData.gc, I2S(this), .strLabel[INT_Index]+I2S(INT_Index2))
                    set INT_Index2 = INT_Index2 + 1
                endloop
            endif
            set INT_Index = INT_Index + 1
        endloop

        return false
    endmethod

    public method FlushAllLabels takes nothing returns nothing
        call FlushStoredMission(GroupData.gc, I2S(this))
    endmethod

    public method Destroy takes nothing returns nothing
        call .FlushAllLabels()
        set this = 0
    endmethod

    private static gamecache gc = null

    public static method Initialize takes nothing returns nothing
        set GroupData.gc = InitGameCache("GroupData")
    endmethod

endstruct

    private function Init takes nothing returns nothing
        call GroupData.Initialize()
    endfunction

endlibrary

'true' 'false' 'broken'

01-08-2009, 01:49 AM	#6
fX_	'Broken' doesn't seem to be a valid boolean value.

01-08-2009, 06:52 AM	#7
Jazradel	Why bother with booleans? 0/1 ftw.

01-08-2009, 10:46 AM	#8
fX_	I don't know but I want to accommodate them.

01-08-2009, 04:33 PM

chobibo

JASS:

    function I2B takes integer value returns boolean
        if (value<=0) then
            return false
        endif
        return true
    endfunction

Or as Jazradel says:

JASS:

    function I2B takes integer value returns boolean
        local boolean bool=null
        if (value==0) then
            set bool=false
        elseif (value==1) then
            set bool=true
        endif
        return bool
    endfunction

I'm not sure about the third return value type, but it should be: true, false, or null.

01-09-2009, 09:47 PM	#10
Anitarf	You shouldn't be typecasting integers to handles...

01-10-2009, 08:27 AM	#11
fX_	What is 'typecasting'?

01-10-2009, 09:23 AM	#12
Anitarf	You ask that as if all the knowledge of this world was not at your fingertips. I, of course, speak of the return bug.

01-10-2009, 11:59 AM	#13
fX_	So why shouldn't I be typecasting integers to handles?

01-10-2009, 12:12 PM

#14

Flame_Phoenix

Quote:

So why shouldn't I be typecasting integers to handles?

Because it bugs and can cause cache corruption if I am not mistaken. This bug took years to find to the coding community. People just decided not to use it ever again, it's better to have something slower but safer, memory corruption in a map will make everything fail, spells won't work and stuff like that, I already had that experience twice ... using Kattana's ...

SO remember:
- H2I is good
- I2H is evil

01-10-2009, 04:48 PM

#15

chobibo

Integer to Handle conversions are dangerous because you aren't sure if the integer you're typecasting to a certain handle type is valid, destroying triggers with triggeractions that still executes causes the handle allocator to give 2 different handles the same handle Id.

For example, you can typecast integer value 1 to a unit

JASS:

function I2H takes integer i returns unit
     return i
     return null
endfunction

function test takes nothing returns nothing
     local unit u=I2H(1)
     call KillUnit(u)
     set u=null
endfunction