Code improvements

Simplified normal gravity check

ams.lua

@@ -28,11 +28,8 @@ addEventHandler('onClientPreRender', root,
         if not vehicle then resetTimer(blowTimer) return end
         if getElementModel( vehicle ) == 425 then resetTimer(blowTimer) return end
 
-        local v1 = Vector3(0,0,-1)
-        local gx, gy, gz = getVehicleGravity( vehicle )
-        local v2 = Vector3(gx, gy, gz)
-
-        if isVec3Equal(v1, v2) then resetTimer(blowTimer) return end
+        -- Check for normal gravity
+        if isNormalVehicleGravity(vehicle) then resetTimer(blowTimer) return end
 
         local cx, cy, cz = getElementPosition( vehicle )
         local matrix = getElementMatrix(vehicle)
@@ -54,9 +51,7 @@ addEventHandler('onClientPreRender', root,
     end
 )
 
-function isVec3Equal(v1,v2)
-    if (v1.x ~= v2.x) or (v1.y ~= v2.y) or (v1.z ~= v2.z) then
-        return false
-    end
-    return true
+function isNormalVehicleGravity(vehicle)
+    local gx, gy, gz = getVehicleGravity(vehicle)
+    return gx == 0 and gy == 0 and gz == -1
 end