update to do list

TODO

@@ -1,20 +1,36 @@
-Place all instances of a particular component in contiguous memory: I.e., a
+----- TO DO LIST -----
-scene holds many std::vectors, one for each type of component. These vectors are
+
-looped through every frame. This should optimise things by improving the memory
+Add support for shadows and other complex lighting. Also add post-processing.
-layout of the program, significantly reducing cache misses.
+
+The engine needs an event/message system, this will be helpful for collision
+detection. Also helpful for general gameplay logic.
+
+Add AABB colliders, sphere colliders, and mesh colliders.
+
+Support animations and skinned meshes.
 
 At some point, add game controller support. Make sure it works well with the
-'Input' class.
+InputManager class.
+
+* Was implemented in the past: *
+For font rendering, put all ASCII characters in one large texture and use
+'instancing' (and uniform buffer objects?) to reduce draw calls.
+
+
+
+
+
+----- DONE -----
 
 For mesh rendering, give every mesh-renderer a ShaderMaterial which, depending
 on the shader, defines how the mesh reacts to light and also stores a reference
 to its texture(s). -- Also make a model loader that works with multiple meshes
 (by creating many objects).
 
-Add support for shadows and other complex lighting. Also add post-processing.
-
-For font rendering, put all ASCII characters in one large texture and use
-'instancing' (and uniform buffer objects?) to reduce draw calls.
-
 # VULKAN #
 The entire vulkan backend needs redesigning without so many classes
+
+Place all instances of a particular component in contiguous memory: I.e., a
+scene holds many std::vectors, one for each type of component. These vectors are
+looped through every frame. This should optimise things by improving the memory
+layout of the program, significantly reducing cache misses.