Progressing update 4

Looks like I forgotted to finish my TriggerComponent, so I finished it and patched it into the engine, so that I can use it for the pickups. They are not spinning. That's because the animation code always assumes that the model for the thing being animated is fully loaded, but it's not always so. Is fixable, but won't fix right now, maybe instead make a workaround.

Also added ammunition counters, that will stop you from shooting if you run out of the ammunitions and also a health meter. There is no dying, just that the health meter turns to "YOURE DEAD", since I don't have an option for reloading levels in the engine. Implementing it would not be too hard, but don't have time now.

Still need to add lights, add a skybox, add sounds and fix a few models and animations. Will try to do it today.