add animations

assets/scripts/navigation.lua

@@ -17,7 +17,8 @@ local screens = {
 if not _G.nav_state then
     _G.nav_state = {
         history = {},
-        current_screen = "home"
+        current_screen = "home",
+        nav_direction = "none"  -- "forward", "back", "home", "none"
     }
 end
 
@@ -25,6 +26,33 @@ end
 local history = _G.nav_state.history
 local function get_current() return _G.nav_state.current_screen end
 local function set_current(s) _G.nav_state.current_screen = s end
+local function get_direction() return _G.nav_state.nav_direction end
+local function set_direction(d) _G.nav_state.nav_direction = d end
+
+-- Apply animation class based on navigation direction
+local function applyNavAnimation()
+    local dir = get_direction()
+    print("Applying animation, direction: " .. dir)
+    if dir ~= "none" and document then
+        -- In RmlUi Lua, get body element
+        local body = document.body
+        if body then
+            print("Found body element, setting class nav-" .. dir)
+            -- Set the appropriate animation class
+            if dir == "forward" then
+                body:SetClass("nav-forward", true)
+            elseif dir == "back" then
+                body:SetClass("nav-back", true)
+            elseif dir == "home" then
+                body:SetClass("nav-home", true)
+            else
+                body:SetClass("nav-default", true)
+            end
+        else
+            print("Body element not found!")
+        end
+    end
+end
 
 -- Navigate to a screen by name
 function navigateTo(screen_name)
@@ -34,10 +62,12 @@ function navigateTo(screen_name)
         -- Push current screen to history before navigating
         table.insert(history, get_current())
         set_current(screen_name)
+        set_direction("forward")
 
         -- Load the new screen using C++ function
         local success = loadScreen(path)
         if success then
+            applyNavAnimation()
             print("Navigated to: " .. screen_name .. " (history depth: " .. #history .. ")")
         else
             -- Restore previous state on failure
@@ -59,7 +89,9 @@ function goBack()
         local path = screens[previous]
         if path then
             set_current(previous)
+            set_direction("back")
             loadScreen(path)
+            applyNavAnimation()
             print("Back to: " .. previous)
             return true
         end
@@ -76,7 +108,9 @@ function goHome()
         history[i] = nil
     end
     set_current("home")
+    set_direction("home")
     loadScreen(screens.home)
+    applyNavAnimation()
     print("Navigated to home")
 end