Fuel Computer + Some Reusable Fuel Code

data/lang/equipment-core/en.json

@@ -825,6 +825,15 @@
     "description": "",
     "message": "Shows profitable commodities to trade between selected and current system"
   },
+
+  "FUEL_COMPUTER": {
+    "description": "Ship equipment computing fuel transfer to hyperdrive if available.",
+    "message": "Fuel Computer"
+  },
+  "FUEL_COMPUTER_DESCRIPTION": {
+    "description": "",
+    "message": "Tired of transferring fuel from cargo to your drive? Now have it automatically balanced on arrival to a system."
+  },
   "UNOCCUPIED_CABIN": {
     "description": "",
     "message": "Extra Passenger Cabin"

data/lang/module-fuel/en.json

@@ -0,0 +1,59 @@
+{
+  "FUEL": {
+    "description": "",
+    "message": "FUEL"
+  },
+  "EMERGENCY_RESERVE": {
+    "description": "",
+    "message": "Emergency Reserve"
+  },
+  "MAIN_TANK": {
+    "description": "",
+    "message": "Main Tank"
+  },
+  "CARGO_BAY": {
+    "description": "",
+    "message": "Cargo Bay"
+  },
+  "DRIVE_TANK": {
+    "description": "",
+    "message": "Drive Tank"
+  },
+  "OPERATIONAL_SETTINGS": {
+    "description": "",
+    "message": "Operational Settings"
+  },
+  "FUEL_COMPUTER": {
+    "description": "",
+    "message": "Fuel Computer"
+  },
+  "INITIATING_TRANSFER": {
+    "description": "",
+    "message": "Initiating Automated Fuel Transfer"
+  },
+  "JUMP_RANGE": {
+    "description": "",
+    "message": "Jump Range"
+  },
+  "MAX_RANGE": {
+    "description": "",
+    "message": "Max Range"
+  },
+  "UNRESERVED_RANGE": {
+    "description": "",
+    "message": "Unreserved Range"
+  },
+  "TOPPING_UP": {
+    "description": "",
+    "message": "Topping up your tank with %dT of H"
+  },
+  "NO_DRIVE_FUEL": {
+    "description": "",
+    "message": "No Fuel Available To Refuel Hyperdrive. Check Your Reserves!"
+  },
+  "NO_DRIVE_MIL_FUEL": {
+    "description": "",
+    "message": "No Military Fuel Available To Refuel Hyperdrive. Check Your Reserves!"
+  }
+
+}

data/libs/EquipType.lua

@@ -389,6 +389,17 @@ function HyperdriveType:GetMaximumRange(ship)
 	return (self.fuel_resv_size * E)^fuel_use_exp_inv
 end
 
+-- Function: GetCustomRange
+--
+-- Returns the range of the hyperdrive under their current lading state of the ship. acounting for a custom extra fuel usage
+---@param ship Ship
+---@param extraMass number - of tons of fuel in cargo for alocation for calculation
+function HyperdriveType:GetCustomRange(ship, extraMass)
+	-- Account for the extra mass needed to reach full fuel state
+	local E = self:GetEfficiencyTerm(ship, extraMass)
+	return ((self.fuel_resv_size+extraMass) * E)^fuel_use_exp_inv
+end
+
 -- Function: GetFuelUse
 --
 -- Returns the fuel consumed by the drive in attempting a jump of the specified distance.
@@ -447,7 +458,7 @@ end
 --
 -- Return the maximum fuel capacity of the drive, in tons.
 function HyperdriveType:GetMaxFuel()
-	return self.fuel_resv_size
+	return self.fuel_resv_size -- is this a cpp value???
 end
 
 -- Function: CheckJump

data/modules/Equipment/Internal.lua

@@ -29,6 +29,14 @@ Equipment.Register("misc.trade_computer", EquipType.New {
 	icon_name="equip_trade_computer"
 })
 
+Equipment.Register("misc.fuel_computer", EquipType.New {
+	l10n_key="FUEL_COMPUTER",
+	price=450, purchasable=true, tech_level=6,
+	slot={ type="computer", size=1 },
+	mass=0.3, volume=0.5, capabilities={ fuel_computer=1 },
+	icon_name="equip_fuel_computer"
+})
+
 --===============================================
 -- Sensors
 --===============================================

data/modules/FuelComputer/FuelComputer.lua

@@ -0,0 +1,64 @@
+
+
+
+-- Copyright © 2008-2025 Pioneer Developers. See AUTHORS.txt for details
+-- Licensed under the terms of the GPL v3. See licenses/GPL-3.txt
+
+local Event = require 'Event'
+local Game = require 'Game'
+local Engine = require 'Engine'
+local Timer = require 'Timer'
+local Serializer = require 'Serializer'
+local Comms = require 'Comms'
+
+local fuel = require 'pigui.libs.fuel-transfer'
+
+-- store which station sent them out
+local policeDispatched = false
+
+local loaded_data
+
+
+local onGameStart = function ()
+	if (loaded_data) then
+	    fuel.setComputerReserve(loaded_data.mainReserve, loaded_data.cargoReserve)
+	end
+	loaded_data = nil
+end
+
+
+local serialize = function ()
+	local data = fuel.getComputerReserve()
+	return data
+end
+
+
+local unserialize = function (data)
+	loaded_data = data
+end
+
+
+
+local onEnterSystem = function (player)
+    if not player:IsPlayer() then return end -- only works for player
+
+	if (loaded_data) then
+		    fuel.setComputerReserve(loaded_data.mainReserve, loaded_data.cargoReserve)
+	end
+
+	loaded_data = nil
+
+	if(fuel.hasFuelComputerCapability()) then
+	    fuel.computerTransfer()
+	end
+end
+
+
+
+
+Event.Register("onGameStart", onGameStart)
+Event.Register("onEnterSystem", onEnterSystem)
+Event.Register("", onEnterSystem)
+
+
+Serializer:Register("FuelComputer", serialize, unserialize)