removed global function

heli_control.lua

@@ -14,13 +14,6 @@ function helicopter.vector_length_sq(v)
 	return v.x * v.x + v.y * v.y + v.z * v.z
 end
 
-function helicopter.get_pointer_angle(energy)
-    local angle = energy * 18
-    angle = angle - 90
-    angle = angle * -1
-	return angle
-end
-
 if not minetest.global_exists("matrix3") then
 	dofile(minetest.get_modpath("helicopter") .. DIR_DELIM .. "matrix.lua")
 end
@@ -136,7 +129,7 @@ function helicopter.heli_control(self, dtime, touching_ground, liquid_below, vel
         local consumed_power = (power/1800) + altitude_consumption_variable
         self.energy = self.energy - consumed_power;
 
-        local energy_indicator_angle = helicopter.get_pointer_angle(self.energy)
+        local energy_indicator_angle = ((self.energy * 18) - 90) * -1
         if self.pointer:get_luaentity() then
             self.pointer:set_attach(self.object,'',{x=0,y=11.26,z=9.37},{x=0,y=0,z=energy_indicator_angle})
         else

heli_fuel_management.lua

@@ -37,7 +37,7 @@ function load_fuel(self, player_name)
 	        self.energy = self.energy + 1
             if self.energy > 10 then self.energy = 10 end
 
-            local energy_indicator_angle = helicopter.get_pointer_angle(self.energy)
+            local energy_indicator_angle = ((self.energy * 18) - 90) * -1
             self.pointer:set_attach(self.object,'',{x=0,y=11.26,z=9.37},{x=0,y=0,z=energy_indicator_angle})
 
 	        --sound and animation

init.lua

@@ -199,7 +199,7 @@ minetest.register_entity("helicopter:heli", {
         helicopter.paint(self, self.color)
         local pos = self.object:get_pos()
 	    local pointer=minetest.add_entity(pos,'helicopter:pointer')
-        local energy_indicator_angle = helicopter.get_pointer_angle(self.energy)
+        local energy_indicator_angle = ((self.energy * 18) - 90) * -1
 	    pointer:set_attach(self.object,'',{x=0,y=11.26,z=9.37},{x=0,y=0,z=energy_indicator_angle})
 	    self.pointer = pointer