engine structure

examples/cube.rs

@@ -8,12 +8,10 @@ fn main() {
     engine.thread("Main.tick", || {});
 
     let my_rect = engine.entity(|r| {
-        r.draw_rect(8, 3, 11, 5, 0x0000ff);
+        r.draw_rect(0, 0, 2, 1, 0x0000ff);
     });
 
-    terminal::clear().unwrap();
+    engine.start();
-
-    my_rect.render(&mut osmium::renderer::Renderer {});
 
     terminal::show_cursor().unwrap();
 }

src/entity.rs

@@ -29,4 +29,10 @@ impl Entity {
     pub fn render(&mut self, renderer: &mut Renderer) {
         (self.render)(renderer)
     }
+
+    pub fn tick(&mut self) {
+        for comp in &mut self.components {
+            // comp.tick(self);
+        }
+    }
 }

src/lib.rs

@@ -18,6 +18,10 @@ pub struct Engine {
     entities: Vec<entity::Entity>,
 }
 
+pub fn sleep(ms: u64) {
+    std::thread::sleep(std::time::Duration::from_millis(ms));
+}
+
 impl Engine {
     pub fn thread<F: FnMut() + Send + Sync + 'static>(&mut self, label: &str, f: F) {
         self.threads.insert(label.to_string(), Box::new(f));
@@ -30,4 +34,32 @@ impl Engine {
             .last_mut()
             .expect("Unable to obtain entity (unspawned)")
     }
+
+    pub fn render(&mut self) {
+        terminal::clear().unwrap();
+
+        let mut renderer = renderer::Renderer::new();
+        for entity in &mut self.entities {
+            entity.render(&mut renderer);
+        }
+    }
+
+    pub fn tick(&mut self) {
+        terminal::clear().unwrap();
+
+        for entity in &mut self.entities {
+            entity.tick();
+        }
+    }
+
+    pub fn start(&mut self) {
+        for thr in &mut self.threads.values() {
+            //     std::thread::spawn(thr);
+        }
+
+        loop {
+            self.render();
+            sleep(16);
+        }
+    }
 }

src/renderer.rs

@@ -3,6 +3,10 @@ use crate::terminal::{hex_bg, print_liner};
 pub struct Renderer {}
 
 impl Renderer {
+    pub fn new() -> Self {
+        Self {}
+    }
+
     pub fn draw_rect(&self, x: u16, y: u16, width: u16, height: u16, color: u32) {
         let rl = " ".repeat(width as usize) + "\x1b[0m";
         let rect = (rl + "\n").repeat(height as usize);