name changed to avoid collision with another mod

automobiles/automobiles_control.lua

@@ -1,105 +0,0 @@
---global constants
-
-automobiles.vector_up = vector.new(0, 1, 0)
-
-function automobiles.check_road_is_ok(obj, max_acc_factor)
-	local pos_below = obj:get_pos()
-	pos_below.y = pos_below.y - 0.1
-	local node_below = minetest.get_node(pos_below).name
-    --minetest.chat_send_all(node_below)
-    local nodedef = minetest.registered_nodes[node_below]
-    if nodedef.liquidtype == "none" then
-        local slow_nodes = {
-                            ['default:ice '] = 0.01,
-                            ['default:cave_ice'] = 0.01,
-                           }
-        local acc = slow_nodes[node_below]
-        if acc == nil then acc = max_acc_factor end
-        return acc
-    else
-        return 0
-    end
-end
-
-function automobiles.control(self, dtime, hull_direction, longit_speed, longit_drag, later_drag, accel, max_acc_factor, max_speed, steering_limit, steering_speed)
-    self._last_time_command = self._last_time_command + dtime
-    if self._last_time_command > 1 then self._last_time_command = 1 end
-
-	local player = minetest.get_player_by_name(self.driver_name)
-    local retval_accel = accel;
-    local stop = false
-    
-	-- player control
-	if player then
-		local ctrl = player:get_player_control()
-		
-        local acc = 0
-
-        if longit_speed < roadster.max_speed and ctrl.up then
-            --get acceleration factor
-            acc = automobiles.check_road_is_ok(self.object, max_acc_factor)
-            --minetest.chat_send_all('engineacc: '.. engineacc)
-            if acc > 1 and acc < max_acc_factor and longit_speed > 0 then
-                --improper road will reduce speed
-                acc = -1
-            end
-        end
-
-        --reversing
-	    if ctrl.sneak and longit_speed <= 1.0 and longit_speed > -1.0 then
-            acc = -1
-	    end
-
-        --break
-        if ctrl.down then
-        
-            --total stop
-            --wheel break
-            if longit_speed > 0 then
-                acc = -5
-                if (longit_speed + acc) < 0 then
-                    acc = longit_speed * -1
-                end
-            end
-            if longit_speed < 0 then
-                acc = 5
-                if (longit_speed + acc) > 0 then
-                    acc = longit_speed * -1
-                end
-            end
-            if abs(longit_speed) < 0.2 then
-                stop = true
-            end
-        end
-
-        if acc then retval_accel=vector.add(accel,vector.multiply(hull_direction,acc)) end
-
-		-- steering
-		if ctrl.right then
-			self._steering_angle = math.max(self._steering_angle-steering_speed*dtime,-steering_limit)
-		elseif ctrl.left then
-			self._steering_angle = math.min(self._steering_angle+steering_speed*dtime,steering_limit)
-        else
-            --center steering
-            if longit_speed > 0 then
-                local factor = 1
-                if self._steering_angle > 0 then factor = -1 end
-                local correction = (steering_limit*(longit_speed/100)) * factor
-                local before_correction = self._steering_angle
-                self._steering_angle = self._steering_angle + correction
-                if math.sign(before_correction) ~= math.sign(self._steering_angle) then self._steering_angle = 0 end
-            end
-		end
-
-        local angle_factor = self._steering_angle / 60
-        if angle_factor < 0 then angle_factor = angle_factor * -1 end
-        local deacc_on_curve = longit_speed * angle_factor
-        deacc_on_curve = deacc_on_curve * -1
-        if deacc_on_curve then retval_accel=vector.add(retval_accel,vector.multiply(hull_direction,deacc_on_curve)) end
-    
-	end
-
-    return retval_accel, stop
-end
-
-

automobiles/automobiles_custom_physics.lua

@@ -1,66 +0,0 @@
-local min = math.min
-local abs = math.abs
-
-function automobiles.physics(self)
-    local friction = 0.99
-	local vel=self.object:get_velocity()
-		-- dumb friction
-	if self.isonground and not self.isinliquid then
-        --minetest.chat_send_all('okay')
-		self.object:set_velocity({x=vel.x*friction,
-								y=vel.y,
-								z=vel.z*friction})
-	end
-	
-	-- bounciness
-	if self.springiness and self.springiness > 0 then
-		local vnew = vector.new(vel)
-		
-		if not self.collided then						-- ugly workaround for inconsistent collisions
-			for _,k in ipairs({'y','z','x'}) do
-				if vel[k]==0 and abs(self.lastvelocity[k])> 0.1 then
-					vnew[k]=-self.lastvelocity[k]*self.springiness
-				end
-			end
-		end
-		
-		if not vector.equals(vel,vnew) then
-			self.collided = true
-		else
-			if self.collided then
-				vnew = vector.new(self.lastvelocity)
-			end
-			self.collided = false
-		end
-		
-		self.object:set_velocity(vnew)
-	end
-	
-	-- buoyancy
-	local surface = nil
-	local surfnodename = nil
-	local spos = mobkit.get_stand_pos(self)
-	spos.y = spos.y+0.01
-	-- get surface height
-	local snodepos = mobkit.get_node_pos(spos)
-	local surfnode = mobkit.nodeatpos(spos)
-	while surfnode and (surfnode.drawtype == 'liquid' or surfnode.drawtype == 'flowingliquid') do
-		surfnodename = surfnode.name
-		surface = snodepos.y +0.5
-		if surface > spos.y+self.height then break end
-		snodepos.y = snodepos.y+1
-		surfnode = mobkit.nodeatpos(snodepos)
-	end
-	self.isinliquid = surfnodename
-	if surface then				-- standing in liquid
---		self.isinliquid = true
-		local submergence = min(surface-spos.y,self.height)/self.height
---		local balance = self.buoyancy*self.height
-		local buoyacc = mobkit.gravity*(self.buoyancy-submergence)
-		mobkit.set_acceleration(self.object,
-			{x=-vel.x*self.water_drag,y=buoyacc-vel.y*abs(vel.y)*0.4,z=-vel.z*self.water_drag})
-	else
-	    self.object:set_acceleration({x=0,y=mobkit.gravity,z=0})
-	end
-
-end

automobiles_lib/control.lua

@@ -1,8 +1,8 @@
 --global constants
 
-automobiles.vector_up = vector.new(0, 1, 0)
+automobiles_lib.vector_up = vector.new(0, 1, 0)
 
-function automobiles.check_road_is_ok(obj, max_acc_factor)
+function automobiles_lib.check_road_is_ok(obj, max_acc_factor)
 	local pos_below = obj:get_pos()
 	pos_below.y = pos_below.y - 0.1
 	local node_below = minetest.get_node(pos_below).name
@@ -21,7 +21,7 @@ function automobiles.check_road_is_ok(obj, max_acc_factor)
     end
 end
 
-function automobiles.control(self, dtime, hull_direction, longit_speed, longit_drag, later_drag, accel, max_acc_factor, max_speed, steering_limit, steering_speed)
+function automobiles_lib.control(self, dtime, hull_direction, longit_speed, longit_drag, later_drag, accel, max_acc_factor, max_speed, steering_limit, steering_speed)
     self._last_time_command = self._last_time_command + dtime
     if self._last_time_command > 1 then self._last_time_command = 1 end
 
@@ -37,7 +37,7 @@ function automobiles.control(self, dtime, hull_direction, longit_speed, longit_d
         if self._energy > 0 then
             if longit_speed < roadster.max_speed and ctrl.up then
                 --get acceleration factor
-                acc = automobiles.check_road_is_ok(self.object, max_acc_factor)
+                acc = automobiles_lib.check_road_is_ok(self.object, max_acc_factor)
                 --minetest.chat_send_all('engineacc: '.. engineacc)
                 if acc > 1 and acc < max_acc_factor and longit_speed > 0 then
                     --improper road will reduce speed

automobiles_lib/custom_physics.lua

@@ -1,7 +1,7 @@
 local min = math.min
 local abs = math.abs
 
-function automobiles.physics(self)
+function automobiles_lib.physics(self)
     local friction = 0.99
 	local vel=self.object:get_velocity()
 		-- dumb friction

automobiles_lib/fuel_management.lua

@@ -2,7 +2,7 @@
 -- fuel
 --
 
-function automobiles.contains(table, val)
+function automobiles_lib.contains(table, val)
     for k,v in pairs(table) do
         if k == val then
             return v
@@ -11,7 +11,7 @@ function automobiles.contains(table, val)
     return false
 end
 
-function automobiles.loadFuel(self, player_name, free, max_fuel)
+function automobiles_lib.loadFuel(self, player_name, free, max_fuel)
     free = free or false
 
     local player = minetest.get_player_by_name(player_name)
@@ -21,7 +21,7 @@ function automobiles.loadFuel(self, player_name, free, max_fuel)
     local item_name = ""
     if itmstck then item_name = itmstck:get_name() end
 
-    local fuel = automobiles.contains(automobiles.fuel, item_name)
+    local fuel = automobiles_lib.contains(automobiles_lib.fuel, item_name)
     if fuel or free == true then
         local stack = ItemStack(item_name .. " 1")
         if self._energy < max_fuel then
@@ -30,7 +30,7 @@ function automobiles.loadFuel(self, player_name, free, max_fuel)
                 self._energy = self._energy + fuel
             end
             if self._energy > max_fuel then self._energy = max_fuel end
-            automobiles.last_fuel_display = 0
+            automobiles_lib.last_fuel_display = 0
             if self._energy == max_fuel then minetest.chat_send_player(player_name, "Full tank!") end
         end
         

automobiles_lib/ground_detection.lua

@@ -1,5 +1,5 @@
 --lets assume that the rear axis is at object center, so we will use the distance only for front wheels
-function automobiles.ground_get_distances(self, radius, axis_distance)
+function automobiles_lib.ground_get_distances(self, radius, axis_distance)
 
     --local mid_axis = (axis_length / 2)/10
     local hip = axis_distance
@@ -14,35 +14,35 @@ function automobiles.ground_get_distances(self, radius, axis_distance)
     
     local pos = self.object:get_pos()
 
-    local r_x, r_z = automobiles.get_xz_from_hipotenuse(pos.x, pos.z, yaw, 0)
+    local r_x, r_z = automobiles_lib.get_xz_from_hipotenuse(pos.x, pos.z, yaw, 0)
     local r_y = pos.y
     local rear_axis = {x=r_x, y=r_y, z=r_z}
 
-    local rear_obstacle_level = automobiles.get_obstacle(rear_axis)
+    local rear_obstacle_level = automobiles_lib.get_obstacle(rear_axis)
     --minetest.chat_send_all("rear"..dump(rear_obstacle_level))
 
-    local f_x, f_z = automobiles.get_xz_from_hipotenuse(pos.x, pos.z, yaw, hip)
+    local f_x, f_z = automobiles_lib.get_xz_from_hipotenuse(pos.x, pos.z, yaw, hip)
-    local x, f_y = automobiles.get_xz_from_hipotenuse(f_x, r_y, pitch - math.rad(90), hip) --the x is only a mock
+    local x, f_y = automobiles_lib.get_xz_from_hipotenuse(f_x, r_y, pitch - math.rad(90), hip) --the x is only a mock
     --minetest.chat_send_all("r: "..r_y.." f: "..f_y .." - "..math.deg(pitch))
     local front_axis = {x=f_x, y=f_y, z=f_z}
-    local front_obstacle_level = automobiles.get_obstacle(front_axis)
+    local front_obstacle_level = automobiles_lib.get_obstacle(front_axis)
     --minetest.chat_send_all("front"..dump(front_obstacle_level))
 
     --[[local left_front = {x=0, y=f_y, z=0}
-    left_front.x, left_front.z = automobiles.get_xz_from_hipotenuse(f_x, f_z, yaw+math.rad(90), mid_axis)
+    left_front.x, left_front.z = automobiles_lib.get_xz_from_hipotenuse(f_x, f_z, yaw+math.rad(90), mid_axis)
 
     local right_front = {x=0, y=f_y, z=0}
-    right_front.x, right_front.z = automobiles.get_xz_from_hipotenuse(f_x, f_z, yaw-math.rad(90), mid_axis)]]--
+    right_front.x, right_front.z = automobiles_lib.get_xz_from_hipotenuse(f_x, f_z, yaw-math.rad(90), mid_axis)]]--
     
     --[[
 
-    local rear_obstacle_level = automobiles.get_obstacle(rear_axis, 0.2, 0.25)]]--
+    local rear_obstacle_level = automobiles_lib.get_obstacle(rear_axis, 0.2, 0.25)]]--
 
     --[[local left_rear = {x=0, y=r_y, z=0}
-    left_rear.x, left_rear.z = automobiles.get_xz_from_hipotenuse(r_x, r_z, yaw+math.rad(90), mid_axis)
+    left_rear.x, left_rear.z = automobiles_lib.get_xz_from_hipotenuse(r_x, r_z, yaw+math.rad(90), mid_axis)
 
     local right_rear = {x=0, y=r_y, z=0}
-    right_rear.x, right_rear.z = automobiles.get_xz_from_hipotenuse(r_x, r_z, yaw-math.rad(90), mid_axis)]]--
+    right_rear.x, right_rear.z = automobiles_lib.get_xz_from_hipotenuse(r_x, r_z, yaw-math.rad(90), mid_axis)]]--
 
     --lets try to get the pitch
     if front_obstacle_level.y ~= nil and rear_obstacle_level.y ~= nil then
@@ -62,7 +62,7 @@ function automobiles.ground_get_distances(self, radius, axis_distance)
 
 end
 
-function automobiles.get_xz_from_hipotenuse(orig_x, orig_z, yaw, distance)
+function automobiles_lib.get_xz_from_hipotenuse(orig_x, orig_z, yaw, distance)
     --cara, o minetest é bizarro, ele considera o eixo no sentido ANTI-HORÁRIO... Então pra equação funcionar, subtrair o angulo de 360 antes
     yaw = math.rad(360) - yaw
     local z = (math.cos(yaw)*distance) + orig_z
@@ -70,14 +70,14 @@ function automobiles.get_xz_from_hipotenuse(orig_x, orig_z, yaw, distance)
     return x, z
 end
 
-function automobiles.get_obstacle(ref_pos)
+function automobiles_lib.get_obstacle(ref_pos)
     --lets clone the table
     local retval = {x=ref_pos.x, y=ref_pos.y, z=ref_pos.z}
     --minetest.chat_send_all("aa y: " .. dump(retval.y))
     local i_pos = {x=ref_pos.x, y=ref_pos.y, z=ref_pos.z}
     --minetest.chat_send_all("bb y: " .. dump(i_pos.y))
 
-    local y = automobiles.eval_interception(i_pos, {x=i_pos.x, y=i_pos.y - 2, z=i_pos.z})
+    local y = automobiles_lib.eval_interception(i_pos, {x=i_pos.x, y=i_pos.y - 2, z=i_pos.z})
     if y then
         retval.y = y
     end
@@ -94,7 +94,7 @@ local function get_nodedef_field(nodename, fieldname)
     return minetest.registered_nodes[nodename][fieldname]
 end
 
-function automobiles.eval_interception(initial_pos, end_pos)
+function automobiles_lib.eval_interception(initial_pos, end_pos)
     local ret_y = nil
 	local cast = minetest.raycast(initial_pos, end_pos, true, false)
 	local thing = cast:next()
@@ -116,7 +116,7 @@ function automobiles.eval_interception(initial_pos, end_pos)
     return ret_y
 end
 
-function automobiles.get_node_below(pos, dist)
+function automobiles_lib.get_node_below(pos, dist)
     local node = minetest.get_node(pos)
     local pos_below = pos
     pos_below.y = pos_below.y - (dist + 0.1)

automobiles_lib/init.lua

@@ -1,15 +1,15 @@
 -- Minetest 5.4.1 : automobiles
 
-automobiles = {}
+automobiles_lib = {}
 
-automobiles.fuel = {['biofuel:biofuel'] = 1,['biofuel:bottle_fuel'] = 1,
+automobiles_lib.fuel = {['biofuel:biofuel'] = 1,['biofuel:bottle_fuel'] = 1,
                 ['biofuel:phial_fuel'] = 0.25, ['biofuel:fuel_can'] = 10}
 
-automobiles.gravity = 9.8
+automobiles_lib.gravity = 9.8
-automobiles.is_creative = minetest.settings:get_bool("creative_mode", false)
+automobiles_lib.is_creative = minetest.settings:get_bool("creative_mode", false)
 
 --cars colors
-automobiles.colors ={
+automobiles_lib.colors ={
     black='#2b2b2b',
     blue='#0063b0',
     brown='#8c5922',
@@ -31,24 +31,24 @@ automobiles.colors ={
 -- helpers and co.
 --
 
-function automobiles.get_hipotenuse_value(point1, point2)
+function automobiles_lib.get_hipotenuse_value(point1, point2)
     return math.sqrt((point1.x - point2.x) ^ 2 + (point1.y - point2.y) ^ 2 + (point1.z - point2.z) ^ 2)
 end
 
-function automobiles.dot(v1,v2)
+function automobiles_lib.dot(v1,v2)
 	return (v1.x*v2.x)+(v1.y*v2.y)+(v1.z*v2.z)
 end
 
-function automobiles.sign(n)
+function automobiles_lib.sign(n)
 	return n>=0 and 1 or -1
 end
 
-function automobiles.minmax(v,m)
+function automobiles_lib.minmax(v,m)
 	return math.min(math.abs(v),m)*minekart.sign(v)
 end
 
 --painting
-function automobiles.paint(self, colstr)
+function automobiles_lib.paint(self, colstr)
     if colstr then
         self._color = colstr
         local l_textures = self.initial_properties.textures
@@ -63,7 +63,7 @@ function automobiles.paint(self, colstr)
 end
 
 -- attach player
-function automobiles.attach_driver(self, player)
+function automobiles_lib.attach_driver(self, player)
     local name = player:get_player_name()
     self.driver_name = name
 
@@ -82,7 +82,7 @@ function automobiles.attach_driver(self, player)
     end)
 end
 
-function automobiles.dettach_driver(self, player)
+function automobiles_lib.dettach_driver(self, player)
     local name = self.driver_name
 
     --self._engine_running = false
@@ -101,7 +101,7 @@ function automobiles.dettach_driver(self, player)
 
     -- detach the player
     if player then
-        --automobiles.remove_hud(player)
+        --automobiles_lib.remove_hud(player)
 
         player:set_detach()
         player_api.player_attached[name] = nil
@@ -112,7 +112,7 @@ function automobiles.dettach_driver(self, player)
 end
 
 -- attach passenger
-function automobiles.attach_pax(self, player, onside)
+function automobiles_lib.attach_pax(self, player, onside)
     local onside = onside or false
     local name = player:get_player_name()
 
@@ -170,7 +170,7 @@ function automobiles.attach_pax(self, player, onside)
     end
 end
 
-function automobiles.dettach_pax(self, player)
+function automobiles_lib.dettach_pax(self, player)
     local name = player:get_player_name() --self._passenger
 
     -- passenger clicked the object => driver gets off the vehicle
@@ -194,7 +194,7 @@ function automobiles.dettach_pax(self, player)
     --remove_physics_override(player, {speed=1,gravity=1,jump=1})
 end
 
-function automobiles.get_gauge_angle(value, initial_angle)
+function automobiles_lib.get_gauge_angle(value, initial_angle)
     initial_angle = initial_angle or 90
     local angle = value * 18
     angle = angle - initial_angle
@@ -202,8 +202,8 @@ function automobiles.get_gauge_angle(value, initial_angle)
 	return angle
 end
 
-dofile(minetest.get_modpath("automobiles") .. DIR_DELIM .. "custom_physics.lua")
+dofile(minetest.get_modpath("automobiles_lib") .. DIR_DELIM .. "custom_physics.lua")
-dofile(minetest.get_modpath("automobiles") .. DIR_DELIM .. "control.lua")
+dofile(minetest.get_modpath("automobiles_lib") .. DIR_DELIM .. "control.lua")
-dofile(minetest.get_modpath("automobiles") .. DIR_DELIM .. "fuel_management.lua")
+dofile(minetest.get_modpath("automobiles_lib") .. DIR_DELIM .. "fuel_management.lua")
-dofile(minetest.get_modpath("automobiles") .. DIR_DELIM .. "ground_detection.lua")
+dofile(minetest.get_modpath("automobiles_lib") .. DIR_DELIM .. "ground_detection.lua")
 

automobiles_lib/mod.conf

@@ -1,2 +1,2 @@
-name = automobiles
+name = automobiles_lib
 depends=biofuel,mobkit

automobiles_roadster/init.lua

@@ -4,7 +4,7 @@
 roadster={}
 roadster.LONGIT_DRAG_FACTOR = 0.16*0.16
 roadster.LATER_DRAG_FACTOR = 30.0
-roadster.gravity = automobiles.gravity
+roadster.gravity = automobiles_lib.gravity
 roadster.max_speed = 15
 roadster.max_acc_factor = 5
 roadster.max_fuel = 10
@@ -14,10 +14,10 @@ ROADSTER_GAUGE_FUEL_POSITION =  {x=0,y=8.04,z=17.84}
 roadster.front_wheel_xpos = 10.26
 roadster.rear_wheel_xpos = 10.26
 
-dofile(minetest.get_modpath("automobiles") .. DIR_DELIM .. "custom_physics.lua")
+dofile(minetest.get_modpath("automobiles_lib") .. DIR_DELIM .. "custom_physics.lua")
-dofile(minetest.get_modpath("automobiles") .. DIR_DELIM .. "control.lua")
+dofile(minetest.get_modpath("automobiles_lib") .. DIR_DELIM .. "control.lua")
-dofile(minetest.get_modpath("automobiles") .. DIR_DELIM .. "fuel_management.lua")
+dofile(minetest.get_modpath("automobiles_lib") .. DIR_DELIM .. "fuel_management.lua")
-dofile(minetest.get_modpath("automobiles") .. DIR_DELIM .. "ground_detection.lua")
+dofile(minetest.get_modpath("automobiles_lib") .. DIR_DELIM .. "ground_detection.lua")
 dofile(minetest.get_modpath("automobiles_roadster") .. DIR_DELIM .. "roadster_utilities.lua")
 dofile(minetest.get_modpath("automobiles_roadster") .. DIR_DELIM .. "roadster_entities.lua")
 dofile(minetest.get_modpath("automobiles_roadster") .. DIR_DELIM .. "roadster_forms.lua")

automobiles_roadster/mod.conf

@@ -2,4 +2,4 @@ name=automobiles_roadster
 title=Roadster
 description=A roadster automobile
 author=apercy
-depends=biofuel,automobiles,mobkit
+depends=biofuel,automobiles_lib,mobkit

automobiles_roadster/roadster_crafts.lua

@@ -39,7 +39,7 @@ minetest.register_craftitem("automobiles_roadster:roadster", {
                 ent.owner = owner
 			    car:set_yaw(placer:get_look_horizontal())
 			    itemstack:take_item()
-                ent.object:set_acceleration({x=0,y=-automobiles.gravity,z=0})
+                ent.object:set_acceleration({x=0,y=-automobiles_lib.gravity,z=0})
             end
 		end
 

automobiles_roadster/roadster_entities.lua

@@ -220,7 +220,7 @@ minetest.register_entity("automobiles_roadster:roadster", {
     infotext = "A very nice roadster!",
     hp = 50,
     buoyancy = 2,
-    physics = automobiles.physics,
+    physics = automobiles_lib.physics,
     lastvelocity = vector.new(),
     time_total = 0,
     _passenger = nil,
@@ -274,7 +274,7 @@ minetest.register_entity("automobiles_roadster:roadster", {
 
         self.object:set_animation({x = 1, y = 8}, 0, 0, true)
 
-        automobiles.paint(self, self._color)
+        automobiles_lib.paint(self, self._color)
         local pos = self.object:get_pos()
 
         local top1=minetest.add_entity(self.object:get_pos(),'automobiles_roadster:top1')
@@ -361,14 +361,14 @@ minetest.register_entity("automobiles_roadster:roadster", {
         local nhdir = {x=hull_direction.z,y=0,z=-hull_direction.x}		-- lateral unit vector
         local velocity = self.object:get_velocity()
 
-        local longit_speed = automobiles.dot(velocity,hull_direction)
+        local longit_speed = automobiles_lib.dot(velocity,hull_direction)
         local fuel_weight_factor = (5 - self._energy)/5000
         local longit_drag = vector.multiply(hull_direction,(longit_speed*longit_speed) *
-            (roadster.LONGIT_DRAG_FACTOR - fuel_weight_factor) * -1 * automobiles.sign(longit_speed))
+            (roadster.LONGIT_DRAG_FACTOR - fuel_weight_factor) * -1 * automobiles_lib.sign(longit_speed))
         
-		local later_speed = automobiles.dot(velocity,nhdir)
+		local later_speed = automobiles_lib.dot(velocity,nhdir)
         local later_drag = vector.multiply(nhdir,later_speed*
-            later_speed*roadster.LATER_DRAG_FACTOR*-1*automobiles.sign(later_speed))
+            later_speed*roadster.LATER_DRAG_FACTOR*-1*automobiles_lib.sign(later_speed))
 
         local accel = vector.add(longit_drag,later_drag)
 
@@ -411,7 +411,7 @@ minetest.register_entity("automobiles_roadster:roadster", {
 
         local curr_pos = self.object:get_pos()
 		if is_attached then --and self.driver_name == self.owner then
-            local impact = automobiles.get_hipotenuse_value(velocity, self.lastvelocity)
+            local impact = automobiles_lib.get_hipotenuse_value(velocity, self.lastvelocity)
             if impact > 1 then
                 --self.damage = self.damage + impact --sum the impact value directly to damage meter
                 if self._last_time_collision_snd > 0.3 then
@@ -426,7 +426,7 @@ minetest.register_entity("automobiles_roadster:roadster", {
                     })
                 end
                 --[[if self.damage > 100 then --if acumulated damage is greater than 100, adieu
-                    automobiles.destroy(self)
+                    automobiles_lib.destroy(self)
                 end]]--
             end
 
@@ -448,7 +448,7 @@ minetest.register_entity("automobiles_roadster:roadster", {
             --control
             local steering_angle_max = 30
             local steering_speed = 40
-			accel, stop = automobiles.control(self, dtime, hull_direction, longit_speed, longit_drag, later_drag, accel, roadster.max_acc_factor, roadster.max_speed, steering_angle_max, steering_speed)
+			accel, stop = automobiles_lib.control(self, dtime, hull_direction, longit_speed, longit_drag, later_drag, accel, roadster.max_acc_factor, roadster.max_speed, steering_angle_max, steering_speed)
         else
             if self.sound_handle ~= nil then
 	            minetest.sound_stop(self.sound_handle)
@@ -470,10 +470,10 @@ minetest.register_entity("automobiles_roadster:roadster", {
 		if math.abs(self._steering_angle)>5 then
             local turn_rate = math.rad(40)
 			newyaw = yaw + dtime*(1 - 1 / (math.abs(longit_speed) + 1)) *
-                self._steering_angle / 30 * turn_rate * automobiles.sign(longit_speed)
+                self._steering_angle / 30 * turn_rate * automobiles_lib.sign(longit_speed)
 		end
 
-        automobiles.ground_get_distances(self, 0.5, 2.422)
+        automobiles_lib.ground_get_distances(self, 0.5, 2.422)
 
         --[[if player and is_attached then
             player:set_look_horizontal(newyaw)
@@ -498,7 +498,7 @@ minetest.register_entity("automobiles_roadster:roadster", {
         ----------------------------------
         if self._energy > 0 then
             local zero_reference = vector.new()
-            local acceleration = automobiles.get_hipotenuse_value(accel, zero_reference)
+            local acceleration = automobiles_lib.get_hipotenuse_value(accel, zero_reference)
             --minetest.chat_send_all(acceleration)
             local consumed_power = acceleration/40000
             self._energy = self._energy - consumed_power;
@@ -511,12 +511,12 @@ minetest.register_entity("automobiles_roadster:roadster", {
             roadster.engine_set_sound_and_animation(self, longit_speed)
         end
 
-        local energy_indicator_angle = automobiles.get_gauge_angle(self._energy)
+        local energy_indicator_angle = automobiles_lib.get_gauge_angle(self._energy)
         self.fuel_gauge:set_attach(self.object,'',ROADSTER_GAUGE_FUEL_POSITION,{x=0,y=0,z=energy_indicator_angle})
         ----------------------------
         -- end energy consumption --
 
-        accel.y = -automobiles.gravity
+        accel.y = -automobiles_lib.gravity
 
         if stop ~= true then
 	        self.object:set_pos(curr_pos)
@@ -565,9 +565,9 @@ minetest.register_entity("automobiles_roadster:roadster", {
         refuel works it car is stopped and engine is off
         ]]--
         local velocity = self.object:get_velocity()
-        local speed = automobiles.get_hipotenuse_value(vector.new(), velocity)
+        local speed = automobiles_lib.get_hipotenuse_value(vector.new(), velocity)
         if math.abs(speed) <= 0.1 then
-            if automobiles.loadFuel(self, puncher:get_player_name(), false, roadster.max_fuel) then return end
+            if automobiles_lib.loadFuel(self, puncher:get_player_name(), false, roadster.max_fuel) then return end
         end
         -- end refuel
 
@@ -589,7 +589,7 @@ minetest.register_entity("automobiles_roadster:roadster", {
                 local color, indx, _
                 if split[1] then _,indx = split[1]:find('dye') end
                 if indx then
-                    for clr,_ in pairs(automobiles.colors) do
+                    for clr,_ in pairs(automobiles_lib.colors) do
                         local _,x = split[2]:find(clr)
                         if x then color = clr end
                     end
@@ -601,10 +601,10 @@ minetest.register_entity("automobiles_roadster:roadster", {
 
                     --lets paint!!!!
 				    --local color = item_name:sub(indx+1)
-				    local colstr = automobiles.colors[color]
+				    local colstr = automobiles_lib.colors[color]
                     --minetest.chat_send_all(color ..' '.. dump(colstr))
 				    if colstr then
-                        automobiles.paint(self, colstr)
+                        automobiles_lib.paint(self, colstr)
 					    itmstck:set_count(itmstck:get_count()-1)
 					    puncher:set_wielded_item(itmstck)
 				    end
@@ -653,7 +653,7 @@ minetest.register_entity("automobiles_roadster:roadster", {
 		else
             if name == self.owner then
                 --is the owner, okay, lets attach
-                automobiles.attach_driver(self, clicker)
+                automobiles_lib.attach_driver(self, clicker)
                 -- sound
                 self.sound_handle = minetest.sound_play({name = "roadster_engine"},
                         {object = self.object, gain = 0.5, pitch = 0.6, max_hear_distance = 10, loop = true,})
@@ -663,13 +663,13 @@ minetest.register_entity("automobiles_roadster:roadster", {
                 if self._passenger == nil then
                     --there is no passenger, so lets attach
                     if self.driver_name then
-                        automobiles.attach_pax(self, clicker, true)
+                        automobiles_lib.attach_pax(self, clicker, true)
                     end
                 else
                     --there is a passeger
                     if self._passenger == name then
                         --if you are the psenger, so deattach
-                        automobiles.dettach_pax(self, clicker)
+                        automobiles_lib.dettach_pax(self, clicker)
                     end
                 end
             end

automobiles_roadster/roadster_forms.lua

@@ -40,10 +40,10 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 
             if ent._passenger then --any pax?
                 local pax_obj = minetest.get_player_by_name(ent._passenger)
-                automobiles.dettach_pax(ent, pax_obj)
+                automobiles_lib.dettach_pax(ent, pax_obj)
             end
 
-            automobiles.dettach_driver(ent, player)
+            automobiles_lib.dettach_driver(ent, player)
 		end
         minetest.close_formspec(name, "roadster:driver_main")
     end

modpack.conf

@@ -1,4 +1,4 @@
-name=automobiles
+name=automobiles_pck
 title=Automobiles
 description=Collection of automobiles
 author = apercy