Efficiceny in SFX

[Ostralyan.]

I'm making a spell and I'd like to know how to get a a dummy unit ( a spell ) to move in a straight line as efficient as possible

using a loop isn't efficient because if you were to use the triggersleepaction() it's inefficient already but it makes it all jumpy and such.

For example Shockwave the tauren cheiftan spell how would i reproduce that spell WITHOUT using specialeffects - so i mean the orb is a dummy unit

JASS not vJass please

-Thanks

 

[Marcelo Hossomi]

You'll need a timer, which is able to execute a function every 0.03 second, for example.

I really don't know how to do it with JASS without using Game Cache, which will be broken with 1.24, but you can create a timer and attach the unit, the angle and the speed to it.

Then use it to execute a function that moves the unit according to these parameters, moving it with either SetUnitPosition(u,x,y) or SetUnitX/SetUnitY(u,x/y).

Polar functions will also help:
newX = x + distance * Cos(angle in radians)
newY = y + distance * Sin(angle in radians)

CScache can be found in some other sites such as wc3c

 

[Ostralyan.]

Cool, thank you very much for you response - I've seen on other people's maps Cache's and stuff like that although I don't really understand it. I'll check that out on the forums.

Could you go into a bit more detail about attaching the Timers? I've also tried that except I'm not sure which function/s to use and how to attach it properly.

Thanks~

*EDIT*

I see commands such as GetHandleUnit() I'm using NewGen and the command doesn't appear in my command list, neither does it appear in JassCraft, I'm a little confused on how it works although after looking through other people's maps I think I'm safe the say thats the function linking the Timer and the Unit/Speed etc How does it work tho??

 

[Marcelo Hossomi]

You'll need a big set of functions called CSCache (Vexorian) or Local Handle Variables (Kattana, if memory serves me well) and paste it in your map's header.

Those two have similar structures: they have an attachment system wich allows you to "attach" objects or any type of variable (except code) to another object like timers.

For example, Local Handle Vars work like this:

call SetHandleObject( Timer, "movingUnit", Unit )
// Another function (in fact, the one called by the timer)
set MovingUnit = GetHandleUnit( GetExpiredTimer(), "movingUnit")

JassCraft probably has CScache added to it. The functions used above are called "AttachObject" and "GetAttachedUnit", respectively.
Other functions have the same structure: "AttachReal", "AttachInteger", "GetAttachedReal" etc...

Using this you can do something like:

function FuncTimer takes nothing returns nothing
    set T = GetExpiredTimer()
    set u = GetAttachedUnit( T, "MovingUnit" ) // Use the same string
    // Now 'T' is the timer and 'u' is the unit attached to this timer
    set T = null
    set u = null
endfunction

function Start takes nothing returns nothing
 local timer T = CreateTimer()
    // Remember the string used here
    // It's the name of the "field" where the unit will be stored
    call AttachObject( T, "MovingUnit", GetTriggerUnit() )
    call TimerStart( T, 0.03, true, function FuncTimer )
 set T = null
endfunction

However, if you're using NewGen, you'd better learn how to use structs. Then it will be compatible with 1.24 and probably faster than using game cache.

 

[Mooglefrooglian]

Why no vJass? Structs could simplify this, especially in cocnern to the impending doom of 1.24.

 

[Ostralyan.]

Thank you so much, I understand this so much more now and I've already updated the Kattana. When you say learn Structs you mean by using Kattana ...? or is that something completely new again in vJass as stated below.

Oh and to answer your question Mooglefrooglian I asked for no vJass because I can't understand it. I don't even know what it is for that matter.

I'm still a newb at JASS.

Thanks alot for your responses!

*EDIT*
well.. scratch what I just said, I searched vJASS and it seems like to me I can program vJASS in NewGen also, I shall look into this.

 

[Element of Water]

http://www.hiveworkshop.com/forums/...80/coding-an-efficient-knockback-vjass-41418/

My favourite ever vJass tutorial. It's really easy to learn from, and it's how I learned vJass.