Merge pull request #1 from Mokuppo/persistent_hud

Persistent hud

init.lua

@@ -1,10 +1,51 @@
-local GameSettings = require('GameSettings')
+local GameSettings = require('modules/GameSettings')
+local GameSession = require('modules/GameSession')
 
-registerHotkey('ToggleHUD', 'Toggle HUD', function()
-	GameSettings.ToggleGroup('/interface/hud')
-
-end)
+local ToggleHud = {
+    hud_group_path = '/interface/hud',
+    crosshair_path = '/interface/hud/crosshairs',
+    hud_hidden = false,
+    hud_settings = {}
+}
 
-registerHotkey('ToggleCrosshair', 'Toggle Crosshair', function()
-	GameSettings.Toggle('/interface/hud/crosshairs')
-end)
+function ToggleHud:hideHud()
+    local hud_group = Game.GetSettingsSystem():GetGroup(self.hud_group_path)
+
+    -- save HUD settings
+    self.hud_settings = GameSettings.ExportVars(nil, hud_group)
+    -- hide HUD
+    GameSettings.SetGroupBool(self.hud_group_path, false)
+end
+
+function ToggleHud:restoreHud()
+    GameSettings.ImportVars(self.hud_settings)
+end
+
+function ToggleHud:new()
+    registerForEvent('onInit', function()
+        -- restore hud on exit in case it was hidden
+        GameSession.OnEnd(function()
+            if self.hud_hidden then
+                self:restoreHud()
+            end
+        end)
+    end)
+
+    registerHotkey('ToggleHUD', 'Toggle HUD', function()
+        if not self.hud_hidden then
+            self:hideHud()
+        else
+            self:restoreHud()
+        end
+
+        self.hud_hidden = not self.hud_hidden
+    end)
+
+    registerHotkey('ToggleCrosshair', 'Toggle Crosshair', function()
+            GameSettings.Toggle(self.crosshair_path)
+    end)
+
+    return self
+end
+
+return ToggleHud:new()