Hi guys,

I just upgraded to the commercial edition 6.31.4 (and am trying to make physics work (I couldn't make it work in the trial; was it disabled?). I've got a script which I think should create an entity then send that entity off into the sunset. For some reason this isn't working. Here's the script, what have I done wrong?
Code:

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var video_mode = 8;	 // screen size 1024x768
var video_depth = 32; // 32 bit colour D3D mode

string lvlStr = <junk.wmb>;
string witchStr = <cbabe.mdl>;

var witchPos[3] = 100, 0, 20;
var witchForceVec[3] = 0, 0, 200;

entity* witch;

function physFunction() {
        witch = me;
	phent_settype(witch, ph_rigid, ph_box);
	ph_setgravity(nullvector);
	phent_setmass(witch, 10, PH_BOX);
	phent_setdamping (witch, 0, 0);
	while(1) {
		if(key_a == 1) {
			phent_addcentralforce(witch, witchForceVec);
		}
		wait(1);
	}
	phent_settype(witch, 0, 0);
}

function main() {
	level_load(lvlStr);
	wait(1);
	ent_create(witchStr, witchPos, physFunction);
}  

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