Createprojectile problems

[Yaverbey]

Hello i have problem with createprojectile when i make Rustler bomber and S.W.AT Tank he is blowing up. Sorry for my bad english What is my problem in Script?

w, h = guiGetScreenSize ()

local function getPositionFromElementOffset(element,offX,offY,offZ)
	local m = getElementMatrix ( element )  -- Get the matrix
	local x = offX * m[1][1] + offY * m[2][1] + offZ * m[3][1] + m[4][1]  -- Apply transform
	local y = offX * m[1][2] + offY * m[2][2] + offZ * m[3][2] + m[4][2]
	local z = offX * m[1][3] + offY * m[2][3] + offZ * m[3][3] + m[4][3]
	return x, y, z                               -- Return the transformed point
end

local poses = {
 [531] = {0, 0, 0},
}

addEvent("cl_bulletSpawn", true)
addEventHandler("cl_bulletSpawn",getRootElement(),function(x, y, z, player)
	createProjectile(player,19,x,y,z+3)
end)


function fireBTR()
    local veh = getPedOccupiedVehicle(localPlayer)
	if isElement(veh) and getElementModel(veh) == 531 then
		local xv,yv,zv = getElementVelocity(veh)
		local mid = getElementModel(veh)
		local x,y,z = getPositionFromElementOffset(veh, poses[mid][1],poses[mid][2],poses[mid][3]+math.abs(zv*5))
		x,y = x+xv*5, y+yv*5
		triggerServerEvent("sv_bulletSpawn", getRootElement(), x, y, z, localPlayer)
	end
end
bindKey("mouse1","down",fireBTR)

function disableFireSwat ( theVehicle, seat ) 
if ( getElementModel ( theVehicle ) == 531 ) then 
toggleControl ( "vehicle_fire", false ) 
else 
toggleControl ( "vehicle_fire", true ) 
end 
end 
addEventHandler ( "onClientPlayerVehicleEnter", getLocalPlayer(), disableFireSwat )

function disableFireSwat1 ( theVehicle, seat ) 
if ( getElementModel ( theVehicle ) == 531 ) then 
toggleControl ( "lctrl_fire", false ) 
else 
toggleControl ( "lctrl_fire", true ) 
end 
end 
addEventHandler ( "onClientPlayerVehicleEnter", getLocalPlayer(), disableFireSwat1 )

function renderVehCross ()
    local veh = getPedOccupiedVehicle(localPlayer)
	if isElement(veh) and getElementModel(veh) == 531 then
		dxDrawImage (w/2-32, h/2-90,64,64,"shotgun.png",0,0,0)
	end
end
addEventHandler('onClientRender', root, renderVehCross )

Server

addEvent("sv_bulletSpawn", true)
addEventHandler("sv_bulletSpawn",getRootElement(),function(x, y, z, player)
	triggerClientEvent("cl_bulletSpawn", getRootElement(), x, y, z, player)
end)



function crb(source)
	local x,y,z = getElementPosition(source)
    veh = createVehicle(601,x,y,z)
    vehCol = createColSphere(x,y,z,2)
    attachElements ( vehCol, veh, 0, 0, 0 )
    setElementData(vehCol,"parent",veh)
    setElementData(veh,"parent",vehCol)
    setElementData(vehCol,"vehicle",true)
    setElementData(vehCol,"MAX_Slots",50)
    --Engine + Tires
    setElementData(vehCol,"Tire_inVehicle",6)
    setElementData(vehCol,"Engine_inVehicle",1)
    setElementData(vehCol,"Parts_inVehicle",1)
	for i=1,1 do
	    setElementData(vehCol,"engineHealth_"..i,1000)
	end
	for i=1,1 do
	    setElementData(vehCol,"partHealth_"..i,1000)
	end
	for i=1,6 do
	    setElementData(vehCol,"tireHealth_"..i,1000)
	end
    setElementData(vehCol,"fuel",200)
end
addCommandHandler("btr",crb)

how to fix it?

Edited October 11, 2016 by Yaverbey

[Yaverbey]

Anyone can help?

[Adolfram]

have you tried to set z position lower? it might help avoid the cause of explosion

[Yaverbey]

i tried it but dont work

when i start that script my car blowing up self How do fix it?  Anyone can help? 

[Gravestone]

6 hours ago, Yaverbey said:

when i start that script my car blowing up self

Does the projectile fall on the vehicle?

[Yaverbey]

Nope.