[Trigger] Setting points in a circumfrence

[CrueIIntentions]

Just as the title says. I was hoping i could get help on a few things.
1) Setting a point behind an attacking unit.
2) Setting points at a certain spot, In a circle. (In GUI for example):

• Actions
  • Set TempPoint[0] = Position of (casting unit) offset by 500 towards 45 degrees
  • Set TempPoint[1] = Position of (casting unit) offset by 500 towards 90 degrees
• // E.T.C

Can anyone help me?

 

[Dr. Boom]

Seas =)

You meen something like that:

• Behind Attacking Unit
  • Events
    • Unit - A unit Is attacked
  • Conditions
  • Actions
    • Set TempPoint = ((Position of (Attacking unit)) offset by 100.00 towards ((Facing of (Attacking unit)) - 180.00) degrees)

• Circle
  • Events
  • Conditions
  • Actions
    • Set TempPoint = (Position of (Triggering unit))
    • For each (Integer A) from 1 to 10, do (Actions)
      • Loop - Actions
        • Set TempPointArray[(Integer A)] = (TempPoint offset by 500.00 towards ((Real((Integer A))) x 36.00) degrees)

Click to kill the leaks

• No Leaks
  • Events
  • Conditions
  • Actions
    • -------- First Trigger --------
    • Custom script: call RemoveLocation(udg_TempPoint)
    • -------- Second Trigger --------
    • Custom script: call RemoveLocation(udg_TempPointArray[GetForLoopIndexA()])
    • Custom script: call RemoveLocation(udg_TempPoint)

 

[CrueIIntentions]

Ya thanks. But I wanted it in JASS. I can already do it in GUI.

 

[Saia_Djinn]

local real x = GetUnitX(unit) + 500 * Cos(45.*bj_DEGTORAD)
local real y = GetUnitY(unit) + 500 * Sin(45.*bj_DEGTORAD)


straight work with Coordinations or put following to get it as a location:

local location l = Location(x,y)

 

[gameslayer001]

Heres Dr Booms thing in Jass if you want to see it

the point behind target

function facing_Actions takes nothing returns nothing
local location loc
local location loc2
local unit u = GetTriggerUnit()

set loc = GetUnitLoc(u)
set loc2 = PolarProjectionBJ(loc,200,GetUnitFacing(u)+180)

call RemoveLocation(loc)
call RemoveLocation(loc2)
set u = null

//something else
endfunction

//===========================================================================
function InitTrig_facing takes nothing returns nothing
    set gg_trg_facing = CreateTrigger(  )
    call TriggerRegisterAnyUnitEventBJ( gg_trg_facing, EVENT_PLAYER_UNIT_ATTACKED )
    call TriggerAddAction( gg_trg_facing, function facing_Actions )
endfunction

and the points in a circle

function facing2_Actions takes nothing returns nothing
local location loc
local location loc2
local integer a
local integer b

// set loc = GetRectCenter(???)
// set loc = GetUnitLoc(???)

set a = 1
set b = 10
loop
    exitwhen a > b
    set loc2 = PolarProjectionBJ(loc,400,R2I(a)*36)
    //Do Something?
    call RemoveLocation(loc2)
    set a = a + 1
endloop

call RemoveLocation(loc)
endfunction

//===========================================================================
function InitTrig_facing_Copy takes nothing returns nothing
    set gg_trg_facing_Copy = CreateTrigger(  )
    call TriggerRegisterAnyUnitEventBJ( gg_trg_facing_Copy, EVENT_PLAYER_UNIT_ATTACKED )
    call TriggerAddAction( gg_trg_facing_Copy, function facing2_Actions )
endfunction

 

[CrueIIntentions]

I got the rest of it no problem. The only thing that i couldnt figure out how to do was to set the points in a circle using only natives. Thanks and + rep for the help on points behind the attacking unit.

 

[Mooglefrooglian]

Using only natives for the behind is rather easy.

//Using units u and u2, which you have aquired, and if you want the point behind u:

local real x
local real y
local real howFarBehind = 500
local real angle = Atan2(GetUnitY(u) - GetUnitY(u2), GetUnitX(u) - GetUnitX(u2))

set x = Cos(angle) * howFarBehind
set y = Sin(angle) * howFarBehind

I may have put the u and u2's in the atan2 wrong, but I believe they are correct.

As for a circle, assuming you have point (x, y):

local real radius = 500
local real array circleX
local real array circleY
local integer i = 100 //However many points you want goes here
local real angle = 0
local real angleChange = 2 * bj_PI / i

loop
    exitwhen i < 1
    set circleX[i] = x + Cos(angle)
    set circleY[i] = y + Sin(angle)
    set angle = angle + angleChange
    set i = i - 1
endloop

That assumes you know how radians work. If you dont, understand that radians are like degrees, but there are 2pi (or 6.28ish) rather than 360 degrees in a circle.