Adding transforms and spatials

src/gameobject.rs

@@ -0,0 +1,21 @@
+use nalgebra_glm as glm;
+
+pub struct Transform {
+    pub position: glm::Vec3,
+    pub rotation: glm::Vec3,
+    pub scale: glm::Vec3,
+}
+
+impl Default for Transform {
+    fn default() -> Self {
+	Transform {
+	    position: glm::zero(),
+	    rotation: glm::zero(),
+	    scale: glm::vec3(1.0, 1.0, 1.0),
+	}
+    }
+}
+    
+pub trait Spatial {
+    fn get_transform() -> Transform;
+}

src/main.rs

@@ -1,6 +1,7 @@
 mod device;
 mod model;
 mod scripting;
+mod gameobject;
 
 #[macro_use]
 extern crate glium;
@@ -27,9 +28,12 @@ fn main() {
 
     let mut device_manager = crate::device::DeviceManager::new();
 
-    let mut offset = 0.0;
-    let mut rotate = 0.0;
+    struct Cube {
+	t: gameobject::Transform,
+    }
 
+    let mut cube = Cube { t: Default::default() };
+    
     let model = Model::new(&display, "Box.glb");
 
     let mut script_lang = Lua::new();
@@ -56,21 +60,22 @@ fn main() {
 		last_draw = now;
 		
 		if device_manager.is_pressed(&device::Key::W) {
-		    offset += 1.0 * delta;
+		    cube.t.position.z += 1.0 * delta;
 		} else if device_manager.is_pressed(&device::Key::S) {
-		    offset -= 1.0 * delta;
+		    cube.t.position.z -= 1.0 * delta;
 		}
 		if device_manager.is_pressed(&device::Key::A) {
-		    rotate += 1.0 * delta;
+		    cube.t.rotation.x += 1.0 * delta;
 		} else if device_manager.is_pressed(&device::Key::D) {
-		    rotate -= 1.0 * delta;
+		    cube.t.rotation.x -= 1.0 * delta;
 		}
 
 		script_lang.update(delta);
 		
 		let mvp = glm::perspective::<f32>(4.0/3.0, 45.0_f32.to_radians(), 0.2, 100.0);
-		let mvp = glm::translate::<f32>(&mvp, &glm::vec3(0.0, 0.0, -10.0 + offset));
-		let mvp = glm::rotate::<f32>(&mvp, 15.0_f32.to_radians() + rotate, &glm::vec3(1.0, 0.0, 0.0));
+		let mvp = glm::translate::<f32>(&mvp, &(glm::vec3(0.0, 0.0, -10.0) + cube.t.position));
+		let mvp = glm::rotate::<f32>(&mvp, 15.0_f32.to_radians(), &glm::vec3(1.0, 0.0, 0.0));
+		let mvp = glm::rotate_x(&mvp, cube.t.rotation.x);
 		let uniforms = uniform! {
 		    MVP: *mvp.as_ref(),
 		};