1 files changed, 58 insertions, 0 deletions
diff --git a/src/systems/draw.rs b/src/systems/draw.rs
new file mode 100644
index 0000000..1d5ee6b
--- /dev/null
+++ b/src/systems/draw.rs
@@ -0,0 +1,58 @@
+use sdl2::pixels::Color;
+use sdl2::render::WindowCanvas;
+use sdl2::video::{Window, WindowContext};
+use specs::prelude::*;
+
+use crate::components::{Pos, StaticDrawable};
+use crate::texture_manager::TextureManager;
+
+pub struct SysDraw
+{
+    canvas:          WindowCanvas,
+    texture_manager: TextureManager<WindowContext>,
+}
+
+impl SysDraw
+{
+    pub fn new(window: Window) -> Self
+    {
+        let mut canvas = window
+            .into_canvas()
+            .build()
+            .expect("Unable to create canvas");
+        canvas.set_draw_color(Color::RGB(255, 255, 0));
+
+        let texture_manager = TextureManager::new(canvas.texture_creator());
+
+        Self {
+            canvas,
+            texture_manager,
+        }
+    }
+}
+
+impl<'a> System<'a> for SysDraw
+{
+    type SystemData = (ReadStorage<'a, Pos>, ReadStorage<'a, StaticDrawable>);
+
+    fn run(&mut self, (pos, drawable): Self::SystemData)
+    {
+        self.canvas.clear();
+
+        // XXX: This is so slow.. yaaaawn. Replace with ids and texture manager
+        // lifetime?
+        for (_pos, drawable) in (&pos, &drawable).join() {
+            let texture = self
+                .texture_manager
+                .get(&drawable.texture_name)
+                .expect("Unable to load texture");
+
+            // let texture_info = texture.query();
+            self.canvas
+                .copy(&texture, None, None)
+                .expect("Unable to draw texture");
+        }
+
+        self.canvas.present();
+    }
+}