Basically, I'm trying to make a dummy unit circle around a specific unit when a spell is cast. This would become something similar to the ladder ability Sphere, however the dummy unit only completes a full circle. So far everything works OK - I cast the spell and the unit circles around the caster, however the problem occurs when he moves. The dummy unit moves out of it's course and starts to circle somewhere else, not around the caster, while I've limited it's maximum range to X. Here's the code, if someone can find a sollution with my crappy math calculations:
JASS:
scope a initializer Init
globals
private constant integer AID_RAW = 'A000'
private constant integer UID_EFFECT = 'h003'
private constant string SFX_EFFECT = "Abilities\\Weapons\\FaerieDragonMissile\\FaerieDragonMissile.mdl"
endglobals
private function AOE takes unit cast, integer lvl returns real
return 1.
endfunction
private function DAMAGE takes unit cast, integer lvl returns real
return 1.
endfunction
globals
public trigger trig = CreateTrigger()
endglobals
private struct Data
unit cast
unit dum
real dps
real xx
real yy
integer i = 1
effect sfx
static method create takes unit a, unit b returns Data
local Data d = Data.allocate()
set d.cast = a
set d.dum = b
set d.sfx = AddSpecialEffectTarget(SFX_EFFECT, d.dum, "chest")
return d
endmethod
method onDestroy takes nothing returns nothing
set .cast = null
set .dum = null
endmethod
endstruct
private function Conditions takes nothing returns boolean
return GetSpellAbilityId() == AID_RAW
endfunction
private function Callback takes nothing returns boolean
local Data d = TT_GetData()
call SetUnitX(d.dum, GetUnitX(d.cast))
call SetUnitY(d.dum, GetUnitY(d.cast))
set d.xx = GetUnitX(d.cast) + 150. * Cos(((GetUnitFacing(d.dum) + (8. * d.i)) * bj_DEGTORAD))
set d.yy = GetUnitX(d.cast) + 150. * Sin(((GetUnitFacing(d.dum) + (8. * d.i)) * bj_DEGTORAD))
set d.i = d.i + 1
if d.i > 45 then
set d.i = 1
endif
call SetUnitX(d.dum, d.xx)
call SetUnitY(d.dum, d.yy)
call SetUnitFlyHeight(d.dum, GetRandomReal(20., 100.), 0.)
return false
endfunction
private function Actions takes nothing returns nothing
local Data d = Data.create(GetTriggerUnit(), CreateUnit(GetOwningPlayer(GetTriggerUnit()), UID_EFFECT, GetUnitX(GetTriggerUnit()), GetUnitY(GetTriggerUnit()), 0.))
call UnitAddAbility(d.dum, 'Amrf')
call UnitRemoveAbility(d.dum, 'Amrf')
call TT_Start(function Callback, d)
endfunction
private function Init takes nothing returns nothing
call TriggerRegisterAnyUnitEventBJ(trig, EVENT_PLAYER_UNIT_SPELL_EFFECT)
call TriggerAddCondition(trig, Condition(function Conditions))
call TriggerAddAction(trig, function Actions)
endfunction
endscope
The error should be here, in the calculation of the new X and Y:
JASS:
set d.xx = GetUnitX(d.cast) + 150. * Cos(((GetUnitFacing(d.dum) + (8. * d.i)) * bj_DEGTORAD))
set d.yy = GetUnitX(d.cast) + 150. * Sin(((GetUnitFacing(d.dum) + (8. * d.i)) * bj_DEGTORAD))
set d.i = d.i + 1
if d.i > 45 then
set d.i = 1
endif
call SetUnitX(d.dum, d.xx)
call SetUnitY(d.dum, d.yy)
