save/load functionality (WIP)

inc/init/init.config.lua

@@ -1,4 +1,4 @@
-local Config = {
+local DEFAULT_CONFIG = {
   screen = {
     width = 240,
     height = 136
@@ -30,3 +30,44 @@ local Config = {
     splash_duration = 120
   }
 }
+
+local Config = {
+  -- Copy default values initially
+  screen = DEFAULT_CONFIG.screen,
+  colors = DEFAULT_CONFIG.colors,
+  player = DEFAULT_CONFIG.player,
+  physics = DEFAULT_CONFIG.physics,
+  timing = DEFAULT_CONFIG.timing,
+}
+
+local CONFIG_SAVE_BANK = 7
+local CONFIG_SAVE_ADDRESS_MOVE_SPEED = 0
+local CONFIG_SAVE_ADDRESS_MAX_JUMPS = 1
+local CONFIG_MAGIC_VALUE_ADDRESS = 2
+local CONFIG_MAGIC_VALUE = 0xDE -- A magic number to check if config is saved
+
+function Config.save()
+  -- Save physics settings
+  mset(Config.physics.move_speed * 10, CONFIG_SAVE_ADDRESS_MOVE_SPEED, CONFIG_SAVE_BANK)
+  mset(Config.physics.max_jumps, CONFIG_SAVE_ADDRESS_MAX_JUMPS, CONFIG_SAVE_BANK)
+  mset(CONFIG_MAGIC_VALUE, CONFIG_MAGIC_VALUE_ADDRESS, CONFIG_SAVE_BANK) -- Mark as saved
+end
+
+function Config.load()
+  -- Check if config has been saved before using a magic value
+  if mget(CONFIG_MAGIC_VALUE_ADDRESS, CONFIG_SAVE_BANK) == CONFIG_MAGIC_VALUE then
+    Config.physics.move_speed = mget(CONFIG_SAVE_ADDRESS_MOVE_SPEED, CONFIG_SAVE_BANK) / 10
+    Config.physics.max_jumps = mget(CONFIG_SAVE_ADDRESS_MAX_JUMPS, CONFIG_SAVE_BANK)
+  else
+    Config.restore_defaults()
+  end
+end
+
+function Config.restore_defaults()
+  Config.physics.move_speed = DEFAULT_CONFIG.physics.move_speed
+  Config.physics.max_jumps = DEFAULT_CONFIG.physics.max_jumps
+  -- Any other configurable items should be reset here
+end
+
+-- Load configuration on startup
+Config.load()