LDPhysics platform game

[litdev]

Next installment with most controls working, shoting arrows to create ropes from ledges, exploding mines, shooting bombs, throwing rocks, growing with pills, climbing ropes and chains, and a ground surface GJHD405.000

Probably some tidying up and start to think about an actual game, which is where I get stuck...

I did make a couple changes so you would need LitDev beta 1.2.29.0 - mainly for getting rope/chain name back when player touches them.  Also added method to return object acceleration which I can use to measure damage to the player when he falls from height or gets blown up!