Began redoing the engine from scratch this week. Here's what I have so far. (All of the models and textures and whatever are placeholders)
http://i.imgur.com/SrAct4k.png
For now, you can move around and jump. The camera follows you (although it eases into its new position much like the N64 games do). You can rotate the camera around the player, and zoom out if you want. The camera also collides with walls, so you can't move the camera into a wall.
http://i.imgur.com/J4pj0nq.png
It also has fixed camera support. If you enter an invisible radius, the camera will automatically position itself at the "Fixed Camera Location". It'll stay in that position and continue to look at that player until you leave the radius, where the camera will return to normal.
http://i.imgur.com/MwyxE8B.png
Slopes work too. Your character will rotate along the normals. If you are on a slope that has a high rotation, you can still walk up it, but you will slow down overtime until your slide down the slope, which is what would also happen if you walked up a talon trot slope without talon trot.
http://i.imgur.com/pm2RUhN.png
The first three items, bronze silver and gold coins. Bronze gives you 1, silver gives you 5, gold gives you 10. A particle emitter surrounds a coin, but a silver coin will emit more particles than a bronze, and a gold will emit more than a silver. When you run into it, an explosion of particles will burst out, once again bronze has less and gold has more. The hud that displays the coins also eases its way down to its position. If I were to collect a different item before the display time of the coin expired, the second item would ease into a position below the coin counter, and when the coin counter expires, the coin counter would ease out off the screen, and the second item would ease into the position that the coin counter already had, just like Banjo-Kazooie did.
Let me know what you think so far, and what suggestions you have.
I also encourage you all to check out Kiwi 64 if you haven't already. It's a short N64 styled platformer that I discovered a couple of weeks ago. I'm helping the guy prepare a standalone version, and he gave me a couple of pointers regarding his experience developing the game. I also helped him improve the code a little bit.
gamejolt.com/games/platformer/kiwi-64/33914/