Always assume your code is going to compile.

examples/nav_dash.lua

@@ -26,4 +26,67 @@ screen.setTextScale(0.5)
 
 TARDIM NAV| 11
 
-]]
+]]
+
+local function dim_char(dimension_str)
+
+    if dimension_str == "minecraft:overworld" then
+        return "OWR"
+    elseif dimension_str == "minecraft:the_nether" then
+        return "NETH"
+    elseif dimension_str == "minecraft:the_end" then
+        return "END"
+    else 
+        return "???"
+    end
+    
+end
+
+screen.setCursorPos(math.floor((15 - 10) / 2), 1)
+screen.write("TARDIM NAV")
+
+while true do
+    screen.setCursorPos(1, 3)
+
+    local pos = tardim.getCurrentLocation()
+    screen.write("Current pos")
+    screen.setCursorPos(1, 4)
+    screen.write("X: " .. pos.pos.x)
+    screen.setCursorPos(1, 5)
+    screen.write("Y: " .. pos.pos.y)
+    screen.setCursorPos(1, 6)
+    screen.write("Z: " .. pos.pos.z)
+    screen.setCursorPos(1, 7)
+    screen.write("Dimension: " .. dim_char(pos.dimension))
+    screen.setCursorPos(1, 8)
+    screen.write("Facing: " .. pos.facing)
+
+    local dest = tardim.getTravelLocation()
+    screen.setCursorPos(1, 10)
+    screen.write("Destination")
+    screen.setCursorPos(1, 11)
+    screen.write("X: " .. dest.pos.x)
+    screen.setCursorPos(1, 12)
+    screen.write("Y: " .. dest.pos.y)
+    screen.setCursorPos(1, 13)
+    screen.write("Z: " .. dest.pos.z)
+    screen.setCursorPos(1, 14)
+    screen.write("Dimension: " .. dim_char(dest.dimension))
+    screen.setCursorPos(1, 15)
+    screen.write("Facing: " .. dest.facing)
+
+    local fuel = tardim.getFuel()
+    screen.setCursorPos(1, 17)
+    screen.write("Fuel")
+    screen.setCursorPos(1, 18)
+    screen.write("REM.: " .. fuel .. "/100")
+    screen.setCursorPos(1, 19)
+    local Required = tardim.calculateFuelForJourney()
+    screen.write("REQ.: " .. Required)
+    screen.setCursorPos(1, 20)
+    screen.write("ENOUGH: " .. (fuel >= Required and "YES" or "NO"))
+
+    local inFlight = tardim.isInFlight()
+    screen.setCursorPos(1, 22)
+    screen.write("IN FLIGHT: " .. (inFlight and "YES" or "NO"))
+end

src/main/java/su/a71/tardim_ic/tardim_ic/digital_interface/DigitalInterfacePeripheral.java

@@ -294,20 +294,19 @@ public class DigitalInterfacePeripheral implements IPeripheral {
     @LuaFunction(mainThread = true)
     public final ObjectLuaTable getTravelLocation() throws LuaException {
     	TardimData data = getTardimData();
-        if (data.getTravelLocation() != null) {
+        if (data.getTravelLocation() == null) {
-        	Location loc = data.getTravelLocation();
+            data.setTravelLocation(data.getCurrentLocation());
-            return new ObjectLuaTable(Map.of(
+        }
+        Location loc = data.getTravelLocation();
+        return new ObjectLuaTable(Map.of(
                 "dimension", loc.getLevel().location().toString(),
                 "pos", new ObjectLuaTable(Map.of(
                     "x", loc.getPos().getX(),
                     "y", loc.getPos().getY(),
                     "z", loc.getPos().getZ()
                 )),
-            "facing", loc.getFacing().toString()
+                "facing", loc.getFacing().toString()
-            ));
+        ));
-        } else {
-        	return null;
-        }
     }
 
     /**