Let's compile Penumbra [Linux, CMake, 64bit]

[Urkle]

The dependencies folde should be placed next to HPL1Engine as e cmake scripts reference ../dependencies/include and lib.

As for 64bit. The issue is newton 1.53 does not support 64bit nor does the version of angel script we using. Amnesia is using a newer angel script at do support 64bit and a newer newton. But the Apis are different so code we have to be updated in the hpl1engine code to support 64bit.

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Re:newton vs bullet. Yes newton is closed and when talking with the least developer before about using bullet, apparently bullet does not support as much functionality as newton.. However the way the hpl1engine is written all on has to do is write a bullet implementation at conforms to the engines's physics interface and you can switch engines easily.. ( we used to have an fmod sound driver in there at one point too.)

Adding a bullet backend is definitely a project worth looking into if all the functionality can be done, as it would allow more openness of is engine..