Clipping plane tweaks

[deathcap]

The default camera near and far planes are at 1.0 and 1000.0, respectively. Getting too close to a voxel causes visually noticeably clipping:

setting cameraNear to 0.1 improves this, but would be best to retest once collision physics (voxel-control/voxel-physical?) are added, since you can currently clip into a voxel. Also the cameraFar value of 1000.0 is unnecessarily high, 100.0 is more reasonable but it varies depending on game.chunkDistance (with https://github.com/deathcap/camera-debug can test 10 - 1000).

[deathcap]

Changed defaults to 0.1 and 200 for now. Is there any disadvantage of setting the far plane too high? Wouldn't expect there to be anything that far in the distance to render, since distant chunks are removed.

[mikolalysenko]

If the range of the z values is too big you can get flickering artefacts due to the loss of precision in the depth buffer. However for these ranges I doubt you would notice anything.

[mikolalysenko]

Also another thing it could affect are frustum culling calculations. If you are using box-frustum, a farther clip plane will cause more objects to be drawn in the scene, which could impact performance.