1 files changed, 50 insertions, 0 deletions
diff --git a/src/time.rs b/src/time.rs
new file mode 100644
index 0000000..2cdd768
--- /dev/null
+++ b/src/time.rs
@@ -0,0 +1,50 @@
+use std::time::{SystemTime, Duration};
+use sdl2::ttf;
+use sdl2::render::{Texture, TextureCreator};
+use sdl2::pixels::Color;
+
+#[derive(PartialEq)]
+pub enum State {
+    Idle,
+    Active,
+    Inactive,
+}
+
+pub struct Timer {
+    pub state: State,
+    time: SystemTime,
+    result: Duration,
+}
+
+impl Timer {
+    pub fn new() -> Timer {
+        Timer {
+            state: State::Inactive,
+            time: SystemTime::now(),
+            result: Duration::new(0, 0),
+        }
+    }
+
+    pub fn start(&mut self) {
+        self.time = SystemTime::now();
+        self.state = State::Active;
+    }
+
+    pub fn stop(&mut self) {
+        self.result = self.time.elapsed().unwrap();
+        self.state = State::Inactive;
+    }
+
+    pub fn idle(&mut self) {
+        self.state = State::Idle;
+    }
+
+    pub fn to_texture<'a, T>(&'a self, font: &ttf::Font, texture_creator: &'a TextureCreator<T>) -> Texture {
+        let rendered = if self.state == State::Active { self.time.elapsed().unwrap() } else { self.result };
+
+        let surface = font.render(&rendered.as_millis().to_string())
+                          .solid(Color::RGB(255, 255, 255))
+                          .unwrap();
+        texture_creator.create_texture_from_surface(&surface).unwrap()
+    }
+}