Math formula

09-13-2008, 03:54 PM

Ok guys, This is a spell in the spell request thread. The goal was to make this without Pyrogasm's help, so if Pyro sees this thread, please try not to help ! xD
I have a problem with a formula, the objective is to create any number of units in a direction perpendicular to the caster, thus forming a wall (think it like a T).
Can some one help me find the formula, it is the only thing that's left =S

JASS:

//Create the wall, I can't find a formula to complete the wall, I can 
            //only create 1 unit, If I create more, they will mess up everything.
            //Can some one help me find a formula ?
            set i = 0
            set wallPos = 0
            loop
                exitwhen(i == WallNumber(data.level))
                set wall = CreateUnit(owner, WallId(data.level), data.spellX + wallPos * Cos(angle), data.spellY + 75 * Sin(angle), angle)
                call GroupAddUnit(data.walls, wall)
                set wallPos = wallPos - WallSize(data.level)
                set i = i + 1
            endloop

09-13-2008, 04:17 PM

Bobo_The_Kodo

I was actually making something like this a few days ago...

JASS:

    globals
        private constant integer Dummy_Id = 'h000'
        
        private constant integer MaxSegNum = 25
    endglobals
    
    struct WallStruct
        integer segnum
        unit array dummys [MaxSegNum]
        effect array effects [MaxSegNum]
        real array x [MaxSegNum]
        real array y [MaxSegNum]
    endstruct

//...

    public function CreateWall takes player p, real x, real y, real rads, integer segments, real width, string fx, string fx2 returns integer
        local real a = rads + 3.14159/2
        local real tx = x - width/2 * Cos( a )
        local real ty = y - width/2 * Sin( a )
        local WallStruct WS = WallStruct.create()
        local integer i = 1
        set WS.segnum  = IMaxBJ( segments, MaxSegNum )
        loop
            set WS.dummys[i] = CreateUnit( p, Dummy_Id, tx, ty, a * 180 / 3.14159 )
            set WS.effects[i] = AddSpecialEffectTarget( fx, WS.dummys[i], "origin" )
            call DestroyEffect( AddSpecialEffect( fx2, tx, ty ) )
            set WS.x[i] = tx
            set WS.y[i] = ty
            set tx = tx + width/WS.segnum * Cos( a )
            set ty = ty + width/WS.segnum * Sin( a )
            set i = i + 1
            exitwhen i > WS.segnum
        endloop
        return WS
    endfunction

09-13-2008, 05:49 PM

Flame_Phoenix

Thx for help, but it still doesn't work ... can you help me ?? What am I doing wrong ?

JASS:

//setting variables
            set data.caster = caster
            set data.level = level
            set data.catcher = NewTimer()
            set data.spellX = spellX
            set data.spellY = spellY
            set data.walls = CreateGroup()
            
            set angle = (180.0 / bj_PI) * Atan2(data.spellY - GetUnitY(data.caster), data.spellX - GetUnitX(data.caster))
            set a = angle + bj_PI / 2
            set owner = GetOwningPlayer(data.caster)
            
            
            //Create the wall, I can't find a formula to complete the wall, I can 
            //only create 1 unit, If I create more, they will mess up everything.
            //Can some one help me find a formula ?
            set i = 0
            set tx = spellX - WallSize(data.level)/2 * Cos(a)
            set ty = spellY - WallSize(data.level)/2 * Sin(a)
            loop
                exitwhen(i == WallNumber(data.level))
                set wall = CreateUnit(owner, WallId(data.level), tx, ty, a* bj_RADTODEG)
                call GroupAddUnit(data.walls, wall)
                set tx = tx + WallSize(data.level)/WallNumber(data.level) * Cos(a)
                set ty = ty + WallSize(data.level)/WallNumber(data.level) * Sin(a)
                set i = i + 1
            endloop

I tried to use your code, but the result is a diagonal wall, and if the caster is pointing at 90º then the wall is not perpendicular to him.

09-14-2008, 02:24 AM

fX_

get the number of units in that comprise the wall. offset the 1st unit to any end from the center of the wall (where it normal to the caster) then offset the differential between each unit in the wall to the other end of the wall.

x = numb of units

>>>>>>>>>>>>>>> <<<<<<<<<<<<<<<<

differential offset between unit elements
' '
start - - - - - - - end (or: end - - - - - - - - start)
...............l
...............l <---normal line
...........caster

09-14-2008, 03:31 AM

Bobo_The_Kodo

Mine used radians..

Anyway, try this, you messed up the initial angle calculation on yours;

JASS:

//setting variables
            set data.caster = caster
            set data.level = level
            set data.catcher = NewTimer()
            set data.spellX = spellX
            set data.spellY = spellY
            set data.walls = CreateGroup()
            
            set a = Atan2(data.spellY - GetUnitY(data.caster), data.spellX - GetUnitX(data.caster)) + bj_PI / 2
            set owner = GetOwningPlayer(data.caster)
            
            
            //Create the wall, I can't find a formula to complete the wall, I can 
            //only create 1 unit, If I create more, they will mess up everything.
            //Can some one help me find a formula ?
            set i = 0
            set tx = spellX - WallSize(data.level)/2 * Cos(a)
            set ty = spellY - WallSize(data.level)/2 * Sin(a)
            loop
                exitwhen(i == WallNumber(data.level))
                set wall = CreateUnit(owner, WallId(data.level), tx, ty, a* bj_RADTODEG)
                call GroupAddUnit(data.walls, wall)
                set tx = tx + WallSize(data.level)/WallNumber(data.level) * Cos(a)
                set ty = ty + WallSize(data.level)/WallNumber(data.level) * Sin(a)
                set i = i + 1
            endloop

09-14-2008, 04:36 PM

Flame_Phoenix

Ok guys,thx for all help, I just have one last problem.
The wall is not centered ... and I can't find the damn way of doing it ...

JASS:

//setting variables
            set data.caster = caster
            set data.level = GetUnitAbilityLevel(caster, AID)
            set data.catcher = NewTimer()
            set data.walls = CreateGroup()
            set data.freezedUnits = CreateGroup()
            
            set a = Atan2(spellY - GetUnitY(data.caster), spellX - GetUnitX(caster)) + bj_PI / 2
            set owner = GetOwningPlayer(caster)
            
            //creating the walls
            set i = 0
            set tx = spellX - WallSize(data.level)/2 * Cos(a)
            set ty = spellY - WallSize(data.level)/2 * Sin(a)
            loop
                exitwhen(i == WallNumber(data.level))
                set wall = CreateUnit(owner, WallId(data.level), tx, ty, a * bj_RADTODEG)
                call DestroyEffect(AddSpecialEffect(START_EFFECT, GetUnitX(wall), GetUnitY(wall)))
                call GroupAddUnit(data.walls, wall)
                set tx = tx + WallSize(data.level) * Cos(a)
                set ty = ty + WallSize(data.level) * Sin(a)
                set i = i + 1
            endloop

If I use

JASS:

WallSize(data.level)/WallNumber(data.level)

the walls will be created one above each other, and not spaced, like they have no collision size ... help plz ?