lower framerate when not focused

src/au.zig

@@ -427,6 +427,10 @@ pub const Window = struct {
     pub fn should_close(self: Self) bool {
         return c.glfwWindowShouldClose(self.handle) == c.GLFW_TRUE;
     }
+
+    pub fn focused(self: Self) bool {
+        return c.glfwGetWindowAttrib(self.handle, c.GLFW_FOCUSED) == c.GLFW_TRUE;
+    }
 };
 
 pub fn wait_events() []const Bus.Event {

src/main.zig

@@ -89,8 +89,10 @@ pub fn main() !void {
     while (!au.W.should_close()) : (flight_idx = (flight_idx + 1) % flight.len) {
         const frame = flight[flight_idx];
 
-        // todo switch mode depending on if window is focused
-        const events = au.wait_events_timeout(0.10);
+        const events = if (au.W.focused())
+            au.wait_events_timeout(0.1)
+        else
+            au.wait_events_timeout(0.5);
 
         for (events) |u| {
             switch (u) {