save the highest score with castle.storage

main.lua

@@ -1,5 +1,6 @@
 local State = {
    score = 0,
+   highScore = 0,
 }
 
 local Box = {
@@ -9,6 +10,8 @@ local Box = {
    height = 100,
 }
 
+local HIGH_SCORE_STORAGE_KEY = 'highscore'
+
 function love.draw()
    love.graphics.setColor(1, 1, 0, 1)
    love.graphics.rectangle('fill', Box.x, Box.y, Box.width, Box.height)
@@ -20,6 +23,9 @@ end
 function love.mousepressed(x, y)
    if isInBox(x, y) then
       State.score = State.score + 1
+      if State.score > State.highScore then
+         saveHighScore(State.score)
+      end
    end
 end
 
@@ -29,3 +35,10 @@ function isInBox(x, y)
       and x <= Box.x + Box.width
       and y <= Box.y + Box.height
 end
+
+function saveHighScore(score)
+   State.highScore = score
+   network.async(function()
+         castle.storage.set(HIGH_SCORE_STORAGE_KEY, score)
+   end)
+end