feat: Enhance exploration logic to prioritize unvisited directions and improve movement efficiency

turtle.lua

@@ -673,23 +673,18 @@ local function exploreStep()
     
     -- 75% of the time: horizontal exploration (forward movement + turns)
     if r < 75 then
-        -- Try to move forward
+        -- Try to move forward if unvisited
-        if not hasBlockForward or not forwardVisited then
+        if not forwardVisited then
             if hasBlockForward then
                 smartDig("forward")
             end
             if smartForward() then
-                -- Successfully moved forward
                 return
             end
         end
         
-        -- If forward is blocked or visited, try turning to find unvisited direction
+        -- If forward is visited, try to find an unvisited direction
-        if forwardVisited or hasBlockForward then
+        local foundUnvisited = false
-            local turnAttempts = 0
-            local bestDirection = nil
-            
-            -- Check all 4 directions to find best unvisited one
         for i = 1, 4 do
             if state.position then
                 local testPos = {x = state.position.x, y = state.position.y, z = state.position.z}
@@ -701,20 +696,32 @@ local function exploreStep()
                 
                 if not hasVisited(testPos) then
                     -- Found unvisited direction!
-                        if not turtle.inspect() then
+                    local hasBlock = turtle.inspect()
-                            smartForward()
+                    if hasBlock then
+                        smartDig("forward")
+                    end
+                    if smartForward() then
+                        foundUnvisited = true
                         return
                     end
                 end
             end
             
-                -- Turn and check next direction
+            -- Only turn if we haven't found a direction yet
+            if i < 4 then
                 smartTurnRight()
             end
+        end
         
-            -- All directions visited, just pick one and go
+        -- If all directions visited, just move forward anyway (dig if needed)
+        if not foundUnvisited then
+            if hasBlockForward then
                 smartDig("forward")
-            smartForward()
+            end
+            if not smartForward() then
+                -- Can't move forward at all, turn once and try again next step
+                smartTurnRight()
+            end
         end
     
     -- 15% down (only if safe and not too deep)