0.1.0-0-pre.4

crates/engines/engine-v1-common/unit_tests/game_loop.rs

@@ -0,0 +1,30 @@
+// file: crates/engines/engine-v1-common/unit_tests/game_loop.rs
+// version: 1
+
+#[derive(Default)]
+struct CountingGame {
+    updates: u64,
+    last_frame: std::option::Option<crate::EngineFrame>,
+}
+
+impl crate::EngineGame for CountingGame {
+    fn update(&mut self, frame: crate::EngineFrame, _input: crate::InputState) {
+        self.updates = self.updates.saturating_add(1);
+        self.last_frame = std::option::Option::Some(frame);
+        return;
+    }
+}
+
+#[test]
+fn fixed_step_runner_advances_index_and_elapsed_time() {
+    game_logging_lib::with_test_tracing("fixed_step_runner_advances_index_and_elapsed_time", || {
+        let mut game = CountingGame::default();
+        let mut runner = crate::FixedStepRunner::new(std::time::Duration::from_millis(16));
+        runner.tick(&mut game, crate::InputState::none());
+        runner.tick(&mut game, crate::InputState::none());
+        assert_eq!(game.updates, 2);
+        assert_eq!(runner.next_frame_index(), 2);
+        assert_eq!(runner.elapsed(), std::time::Duration::from_millis(32));
+        assert_eq!(game.last_frame.map(crate::EngineFrame::index), std::option::Option::Some(1));
+    });
+}

crates/engines/engine-v1-common/unit_tests/input.rs

@@ -0,0 +1,12 @@
+// file: crates/engines/engine-v1-common/unit_tests/input.rs
+// version: 1
+
+#[test]
+fn action_state_is_independent() {
+    game_logging_lib::with_test_tracing("action_state_is_independent", || {
+        let input = crate::InputState::none().with_action(crate::GameAction::Primary, true);
+        assert!(input.is_active(crate::GameAction::Primary));
+        assert!(!input.is_active(crate::GameAction::Secondary));
+        assert!(!input.is_active(crate::GameAction::Left));
+    });
+}