I dont know if anyone knows this yet but I urge you to let everyone know about this. If you try to move non existant lightning effects, your game will crash. Not world editor, but the game itself. I had to find this out in the hard way......
Trigger to test and prove:
JASS:
function Trig_Untitled_Trigger_001_Actions takes nothing returns nothing
local lightning l=AddLightning("LEAS", true, 0, 0, 5, 5)
local integer i=0
local integer i2=0
loop
call PolledWait(1)
if i==0 then
call MoveLightning(l, true, 5, 5, 0, 0)
else
call MoveLightning(l,true,84, 83, 32, 32)
endif
call BJDebugMsg(I2S(i2))
if i2==5 then
call DestroyLightning(l)
endif
set i=GetRandomInt(0,1)
set i2=i2+1
endloop
endfunction
The result is of course a game crash exactly when 5 is showed on the screen.
Solution:
Set the variable of the lightning to null to prevent leaks because the var will not be null if its not set to null manually.
The only solution is after you set it to null, add a condition that if that var is null, DONT MOVE IT.
Also I tested that if you try to destroy a non existant lightning it doesnt crash, only if you try to MOVE it.
If you want, you can use this function to move lightnings, to prevent any crashes:
JASS:
function LightningMove takes lightning l, boolean checkvisibility, real x1, real y1, real x2, real y2 returns nothing
if l!=null then
call MoveLightning(l,checkvisibility,x1,y1,x2,y2)
endif
endfunction
JASS:
function LightningMoveEx takes lightning l, boolean checkvisibility, real x1, real y1, real z1, real x2, real y2, real z2 returns nothing
if l!=null then
call MoveLightningEx(l,checkvisibility,x1,y1,z1,x2,y2,z2)
endif
endfunction
Just make sure to set the var to null!
