fix(robot-api): mutateRobotPosition

miner.lua

@@ -145,16 +145,9 @@ local function mineProcedure()
 
   -- 1. Move
   if robotState.y > targetY then
-    local ok, err = turtle.digDown()
-
-    if not ok then
-      error('Cannot dig down because ' .. err)
-    end
-
+    turtle.digDown()
     miner.robot.down()
   elseif robotState.dir == 'FORWARD' and robotState.z < targetZ then
-    -- TODO: remove this print (debug purpose)
-    print(robotState.z, targetZ)
     turtleUtils.digAll()
     miner.robot.forward()
   elseif robotState.dir == 'FORWARD' and robotState.z == targetZ then

robot.lua

@@ -15,13 +15,13 @@ api.create = function()
     local incValue = 1
     if isBackward then invValue = -1 end
 
-    if dir == 'FORWARD' then
+    if state.dir == 'FORWARD' then
       state.z = state.z + incValue
-    elseif dir == 'BACKWARD' then
+    elseif state.dir == 'BACKWARD' then
       state.z = state.z - incValue
-    elseif dir == 'LEFT' then
+    elseif state.dir == 'LEFT' then
       state.x = state.x - incValue
-    elseif dir == 'RIGHT' then
+    elseif state.dir == 'RIGHT' then
       state.x = state.x + incValue
     end
   end