custom rocket help!

Xwad · June 29, 2016

I downloaded this custom rocket script:

https://community.multitheftauto.com/in ... ls&id=3742

my problem is that the rocket projectile is not shooting to the direction where the locals player camera look at.

my code starts at line 58.

client

  
gLPlayer = getLocalPlayer() 
  
addEvent("onClientPlayerFireRocket", false) 
  
function fireRocketByRotation(startX, startY, startZ, rotX, rotZ, velocity) 
    local nrotX = -rotX 
    local nrotZ = -(rotZ + 180) 
     
    local velZ = velocity * math.sin(math.rad(rotX)) 
    local a = velocity * math.cos(math.rad(rotX)) 
     
    local velX = a * math.sin(math.rad(-rotZ)) 
    local velY = a * math.cos(math.rad(-rotZ)) 
     
    createProjectile(gLPlayer, 19, startX, startY, startZ, 1.0, nil, nrotX, 0, nrotZ, velX / 50, velY / 50, velZ / 50) 
     
    triggerEvent("onClientPlayerFireRocket", gLPlayer) 
end 
  
function fireRocketByTargetPosition(startX, startY, startZ, targetX, targetY, targetZ, velocity) 
    local rotZ = getRotationZ(startX, startY, targetX, targetY) 
    local rotX = getRotationX(startX, startY, startZ, targetX, targetY, targetZ) 
     
    fireRocketByRotation(startX, startY, startZ, rotX, rotZ, velocity) 
end 
  
function getRotationZ(startX, startY, endX, endY)   -- Dommed-Space-Marine 
    local height = endX - startX 
    local line = endY - startY 
     
    local t = -math.deg(math.atan2(height, line)) 
     
    if t < 0 then 
        t = t + 360 
    end 
     
    return t 
end 
  
function getRotationX(startX, startY, startZ, endX, endY, endZ) -- Dommed-Space-Marine 
    local line = ((endX - startX) ^ 2 + (endY - startY) ^ 2) ^ 0.5 
    local height = endZ - startZ 
     
    local t = math.deg(math.atan2(height, line)) 
     
    --[[ 
    if t < 0 then 
        t = t + 360 
    end 
    --]] 
     
    return t 
end 
  
  
  
function rocket() 
local x,y,z = getElementPosition(localPlayer) <--- THIS IS WORKING 
local rx,_,rz = getPedCameraRotation(localPlayer) <--- THIS IS NOT WORKING 
fireRocketByRotation(x,y,z,rx,rz 50)  <--- THIS IS NOT WORKING 
end 
end 
bindKey("mouse1", "down", rocket)

Dimos7 · June 29, 2016

  
gLPlayer = getLocalPlayer() 
  
addEvent("onClientPlayerFireRocket", false) 
  
function fireRocketByRotation(startX, startY, startZ, rotX, rotZ, velocity) 
    local nrotX = -rotX 
    local nrotZ = -(rotZ + 180) 
    
    local velZ = velocity * math.sin(math.rad(rotX)) 
    local a = velocity * math.cos(math.rad(rotX)) 
    
    local velX = a * math.sin(math.rad(-rotZ)) 
    local velY = a * math.cos(math.rad(-rotZ)) 
    
    createProjectile(gLPlayer, 19, startX, startY, startZ, 1.0, nil, nrotX, 0, nrotZ, velX / 50, velY / 50, velZ / 50) 
    
    triggerEvent("onClientPlayerFireRocket", gLPlayer) 
end 
  
function fireRocketByTargetPosition(startX, startY, startZ, targetX, targetY, targetZ, velocity) 
    local rotZ = getRotationZ(startX, startY, targetX, targetY) 
    local rotX = getRotationX(startX, startY, startZ, targetX, targetY, targetZ) 
    
    fireRocketByRotation(startX, startY, startZ, rotX, rotZ, velocity) 
end 
  
function getRotationZ(startX, startY, endX, endY)   -- Dommed-Space-Marine 
    local height = endX - startX 
    local line = endY - startY 
    
    local t = -math.deg(math.atan2(height, line)) 
    
    if t < 0 then 
        t = t + 360 
    end 
    
    return t 
end 
  
function getRotationX(startX, startY, startZ, endX, endY, endZ) -- Dommed-Space-Marine 
    local line = ((endX - startX) ^ 2 + (endY - startY) ^ 2) ^ 0.5 
    local height = endZ - startZ 
    
    local t = math.deg(math.atan2(height, line)) 
    
    --[[ 
    if t < 0 then 
        t = t + 360 
    end 
    --]] 
    
    return t 
end 
  
  
  
function rocket() 
local x,y,z = getElementPosition(gLPlayer) 
local rx,ry, rz = getPedCameraRotation(gLPlayer) 
fireRocketByRotation(x,y,z,rx,ry,rz 50) 
end 
end 
bindKey("mouse1", "down", rocket)

DarkByte · June 29, 2016

You forgot one comma, here try this.

  
gLPlayer = getLocalPlayer() 
  
addEvent("onClientPlayerFireRocket", false) 
  
function fireRocketByRotation(startX, startY, startZ, rotX, rotZ, velocity) 
    local nrotX = -rotX 
    local nrotZ = -(rotZ + 180) 
    
    local velZ = velocity * math.sin(math.rad(rotX)) 
    local a = velocity * math.cos(math.rad(rotX)) 
    
    local velX = a * math.sin(math.rad(-rotZ)) 
    local velY = a * math.cos(math.rad(-rotZ)) 
    
    createProjectile(gLPlayer, 19, startX, startY, startZ, 1.0, nil, nrotX, 0, nrotZ, velX / 50, velY / 50, velZ / 50) 
    
    triggerEvent("onClientPlayerFireRocket", gLPlayer) 
end 
  
function fireRocketByTargetPosition(startX, startY, startZ, targetX, targetY, targetZ, velocity) 
    local rotZ = getRotationZ(startX, startY, targetX, targetY) 
    local rotX = getRotationX(startX, startY, startZ, targetX, targetY, targetZ) 
    
    fireRocketByRotation(startX, startY, startZ, rotX, rotZ, velocity) 
end 
  
function getRotationZ(startX, startY, endX, endY)   -- Dommed-Space-Marine 
    local height = endX - startX 
    local line = endY - startY 
    
    local t = -math.deg(math.atan2(height, line)) 
    
    if t < 0 then 
        t = t + 360 
    end 
    
    return t 
end 
  
function getRotationX(startX, startY, startZ, endX, endY, endZ) -- Dommed-Space-Marine 
    local line = ((endX - startX) ^ 2 + (endY - startY) ^ 2) ^ 0.5 
    local height = endZ - startZ 
    
    local t = math.deg(math.atan2(height, line)) 
    
    --[[ 
    if t < 0 then 
        t = t + 360 
    end 
    --]] 
    
    return t 
end 
  
  
  
function rocket() 
local x,y,z = getElementPosition(gLPlayer) 
local rx,ry, rz = getPedCameraRotation(gLPlayer) 
fireRocketByRotation(x,y,z,rx,ry,rz, 50) 
end 
end 
bindKey("mouse1", "down", rocket)

ozulus · June 29, 2016

function rocket() 
local x,y,z = getElementPosition(gLPlayer) 
local rx, _, rz = getPedCameraRotation(gLPlayer) 
fireRocketByRotation(x, y, z, rx, rz, 50) 
end 
bindKey("mouse1", "down", rocket)

Captain Cody · June 29, 2016

All it takes is one missing comma or what not to mess it all up.

Xwad · June 29, 2016

None does not work:/

Xwad · June 30, 2016

please help!

Dimos7 · June 30, 2016

gLPlayer = getLocalPlayer() 
  
addEvent("onClientPlayerFireRocket", false) 
  
function fireRocketByRotation(startX, startY, startZ, rotX, rotZ, velocity) 
    local nrotX = -rotX 
    local nrotZ = -(rotZ + 180) 
    
    local velZ = velocity * math.sin(math.rad(rotX)) 
    local a = velocity * math.cos(math.rad(rotX)) 
    
    local velX = a * math.sin(math.rad(-rotZ)) 
    local velY = a * math.cos(math.rad(-rotZ)) 
    
    createProjectile(gLPlayer, 19, startX, startY, startZ, 1.0, nil, nrotX, 0, nrotZ, velX / 50, velY / 50, velZ / 50) 
    
    triggerEvent("onClientPlayerFireRocket", gLPlayer) 
end 
  
function fireRocketByTargetPosition(startX, startY, startZ, targetX, targetY, targetZ, velocity) 
    local rotZ = getRotationZ(startX, startY, targetX, targetY) 
    local rotX = getRotationX(startX, startY, startZ, targetX, targetY, targetZ) 
    
    fireRocketByRotation(startX, startY, startZ, rotX, rotZ, velocity) 
end 
  
function getRotationZ(startX, startY, endX, endY)   -- Dommed-Space-Marine 
    local height = endX - startX 
    local line = endY - startY 
    
    local t = -math.deg(math.atan2(height, line)) 
    
    if t < 0 then 
        t = t + 360 
    end 
    
    return t 
end 
  
function getRotationX(startX, startY, startZ, endX, endY, endZ) -- Dommed-Space-Marine 
    local line = ((endX - startX) ^ 2 + (endY - startY) ^ 2) ^ 0.5 
    local height = endZ - startZ 
    
    local t = math.deg(math.atan2(height, line)) 
    
    --[[ 
    if t < 0 then 
        t = t + 360 
    end 
    --]] 
    
    return t 
end 
  
  
  
function rocket() 
local x,y,z = getElementPosition(gLPlayer) 
local rx, _, rz = getPedCameraRotation(gLPlayer) 
fireRocketByRotation(x,y,z,rx,rz, 50) 
end 
bindKey("mouse1", "down", rocket)

Xwad · June 30, 2016

ERROR: Attempt to perform arithmetic on local 'rotZ' (a nil value)

Xwad · July 25, 2016

pls help me fix this bug: i cant shoot with the rocket up, and down:

  
function mp5_projectile(weapon,ammo,ammoInClip,hitX,hitY,hitZ,hitElement) 
  local PedWeapon = getPedWeapon(localPlayer) 
  local id = getElementModel ( source )  
  if id == 20 or id  == 100 then 
  if (PedWeapon == 29) then 
  local x,y,z = getElementPosition(getLocalPlayer()) 
  local forward_velocity = 1.5 -- do any changes you want here, it adjusts the forward velocity 
  local height_velocity = 0 -- and here, it adjusts the velocity along Z axis 
  local _, _, r = getElementRotation(getLocalPlayer()) 
  pro = createProjectile(getLocalPlayer(),19,x,y,z,200, nil, 0, 0, 0, math.sin(math.rad(-r))*forward_velocity,   math.cos(math.rad(-r))*forward_velocity, height_velocity) 
end 
end 
end 
addEventHandler("onClientPlayerWeaponFire", getLocalPlayer(), mp5_projectile)

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