rendering, physics, player and camera WIP

src/systems/render.rs

@@ -0,0 +1,23 @@
+use crate::render::DrawCall;
+use crate::world::World;
+
+pub fn render_system(world: &World) -> Vec<DrawCall>
+{
+    let all_entities = world.entities.all_entities();
+
+    all_entities
+        .iter()
+        .filter_map(|&entity| {
+            let transform = world.transforms.get(entity)?;
+            let mesh_component = world.meshes.get(entity)?;
+
+            Some(DrawCall {
+                vertex_buffer: mesh_component.mesh.vertex_buffer.clone(),
+                index_buffer: mesh_component.mesh.index_buffer.clone(),
+                num_indices: mesh_component.mesh.num_indices,
+                model: transform.to_matrix(),
+                pipeline: mesh_component.pipeline,
+            })
+        })
+        .collect()
+}