lava-collector: add lateral movement

lava-collector

@@ -4,6 +4,11 @@
 -- chest above base needs to contain empty buckets
 -- the filled buckets will be deposited in a chest below the base
 
+FORWARD = 1
+RIGHT = 2
+LEFT = 3
+BACKWARD = 4
+
 local function compareItemName(target)
     local itemDetail = turtle.getItemDetail()
     if itemDetail == nil then
@@ -31,13 +36,46 @@ local function findFirstLavaBucket()
     return findFirstItem("minecraft:lava_bucket")
 end
 
+local function goRight()
+    if not turtle.turnRight() then
+        return false
+    end
+
+    local success = turtle.forward()
+
+    turtle.turnLeft()
+    return success
+end
+
+local function goLeft()
+    if not turtle.turnLeft() then
+        return false
+    end
+
+    local success = turtle.forward()
+
+    turtle.turnRight()
+    return success
+end
+
+local function doReverseMovement(movement)
+    if movement == FORWARD then
+        return turtle.back()
+    elseif movement == RIGHT then
+        return goLeft()
+    elseif movement == LEFT then
+        return goRight()
+    elseif movement == BACKWARD then
+        return turtle.forward()
+    end
+end
+
 local function returnToBase()
     print('returing to base')
-    while ForwardCounter > 0 do
-        print('ForwardCounter: ' .. ForwardCounter)
-        if turtle.back() then
-            ForwardCounter = ForwardCounter - 1
-        else
+    for i = #Movements, 1, -1 do
+        local movement = Movements[i]
+        print('Movement ' .. i .. ': ' .. movement)
+        if not doReverseMovement(movement) then
             print('hit a block on the way back, I am stuck!')
         end
     end
@@ -48,6 +86,7 @@ local function despositRefill()
         turtle.select(i)
         if compareItemName("minecraft:lava_bucket") then
             while not turtle.dropDown() do
+                ---@diagnostic disable-next-line: undefined-field
                 os.sleep(1)
             end
         end
@@ -73,11 +112,11 @@ local function refuel()
 end
 
 
-ForwardCounter = 0
+Movements = {}
 
 despositRefill()
 while true do
-    if turtle.getFuelLevel() <= ForwardCounter then
+    if turtle.getFuelLevel() <= #Movements then
         print('not enough fuel to return. trying to refuel')
         if not refuel() then
             print('refulling failed. probably the end of the lava lake. returning to base')
@@ -96,9 +135,13 @@ while true do
         turtle.placeDown()
         if compareItemName("minecraft:bucket") then
             if turtle.forward() then
-                ForwardCounter = ForwardCounter + 1
+                table.insert(Movements, FORWARD)
+            elseif goRight() then
+                table.insert(Movements, RIGHT)
+            elseif goLeft() then
+                table.insert(Movements, LEFT)
             else
-                print('hit a wall - returning to base')
+                print("can't find a path - returning to base")
                 returnToBase()
                 despositRefill()
             end