maze2d: add attention shifting mechanism

maze.lua

@@ -82,6 +82,9 @@ function M.generate_maze(seed, width, height, path_length, path_width)
 			-- print("right | cx: "..cx..", target: "..cx+path_length..", value: '"..world[cy][cx + path_length].."', path_length: "..path_length)
 		end
 		-- print("radar output: '" .. directions .. "' (length: " .. #directions .. "), curnode: " .. curnode)
+		
+		local shift_attention = math.random(0, 9)
+		
 		if #directions > 0 then
 			-- we still have somewhere that we can go
 			--print("This node is not a dead end yet.")
@@ -126,21 +129,22 @@ function M.generate_maze(seed, width, height, path_length, path_width)
 			end
 			
 			-- print("Now at ("..cx..", "..cy..")")
-
-			table.insert(nodes, { x = cx, y = cy })
+			
+			-- If the number of directions we could travel in was 1, then we've just travelled in the last remaining direction possible
+			if #directions > 1 then
+				table.insert(nodes, { x = cx, y = cy })
+			end
 		else
 			--print("The node at " .. curnode .. " is a dead end.")
 			table.remove(nodes, curnode)
+		end
+		
+		if #directions == 0 or shift_attention <= 1 then
 			if #nodes > 0 then
 				--print("performing teleport.");
 				curnode = math.random(1, #nodes)
-				--print("New node: " .. curnode)
-				-- print("Nodes table: ")
-				-- print_r(nodes)
 				cx = nodes[curnode]["x"]
 				cy = nodes[curnode]["y"]
-			else
-				--print("Maze generation complete, no teleportation necessary.")
 			end
 		end