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Also, is there a way to stop the entity from spinning?

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Set phent_maxspeed(linMax,Null) and this will limit the entities linear speed to linMax and it's Rotational speed to Zero.

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constaint1[3]=1,0,0; //only allows movement on x axis?

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That's right...so if your "chute" isn't lined up right, you'll get odd effects indeed.

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phcon_setparams1(constraint1, vector(1,0,0),nullvector,nullvector); // I thought that the second agument of this set the contraint axis?

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I"m sorry Russel...constraint1 is the problem, but I gave you the wrong solution.

constraint1=phcon_add(ph_slider, my, 0);

There that should do it. Forget that constraint vector buisness, you are right; vector() is constraint axis. Sorry for the confusion.

constraint1=phcon_add(ph_slider, my, 0);

Heh, I actually had that before. I'll set phent_maxspeed, and with any luck that'll do it.

pjhent_setmaxspeed didn't do anything. It still rotates around. When a ball hits the ball luncher, it gets bumped around to the wrong angle, and then goes all to hell bouncing and twirling all over the place.

To tell the truth, I don't understand about things like velocities and torque, so I probably have a few other settings off:

Code:

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function init_ball_launcher()

{



	var constraint1[3];



	phent_settype(my, ph_rigid, ph_box);

	constraint1=phcon_add(ph_slider, my, 0);

	phent_setmaxspeed(my,10000,null); //this doesn't stop rotation (I tried with other values too)

	

	phcon_setparams1(constraint1, vector(1,0,0),nullvector,nullvector); //limit movement to the x axis

	phcon_setparams2(constraint1, vector(-50,0,0),nullvector,nullvector); //can't (shouldn't be able) to move more than 50 quants

	

	while(my!=null)

	{

	

		temp.x=-spring;//The amount of force to move the ball launcher

		temp.y=-1600000;//maximum force for the ball launcher

		temp.z=0			

		//punch ball out chute	

		//should make it so that it moves back and forth in 1 second intervals

                //seems to work okay until the ball launcher hits a ball and rotates around

		phcon_setmotor(constraint1, temp, nullvector, nullvector);

		sleep(0.5);

		temp.y-=temp.x;

		phcon_setmotor(constraint1, temp, nullvector, nullvector);

		sleep(0.5);

	}

}

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a) phent_setmaxspeed(my,10000, nullvector );

b) keep constraint1 like you had it before; eliminate all instances of it being a vector (ie replace all constraint1[3] with just constraint1. This is a leftover from my mistaken solution.

Okay, I've done those two things. I actually did try it with nullvector, but it didn't work. For a start it does what it is supposed to, but eventually the balls knock the launcher over and it goes wonky:

I take it that it isn't possible to stop the rotation then. I'll just do away with the launcher and keep applying the force directly.

I'm getting back to making the spinners. I'm finding this very difficult, and don't really know how to approach it.

The spinners are not motorised, they should simply spin when balls hit them.

Here is a picture of the entity for the spinners:

I attempted to make the spinner from a hinge. It doesn't move at all. I assigned the spinner entities this action:

Code:

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action init_spinner

{

	var constraint2;

	

	phent_settype(my, ph_rigid, ph_poly);  //ph_poly -polygonal collision?

	constraint2=phcon_add(ph_hinge, my, 0);  //a hinge would be all that is needed in case, right?

	

	phent_setmass(my, 0.5, ph_poly); //lighter than a ball

	phent_setfriction(my, 10); //not much friction

	

	phcon_setparams1(constraint2, my.x,vector(0,0,1),nullvector); //anchor point (origin is in centre of entity)

	phcon_setparams2(constraint2, vector(360,-360,0),nullvector,nullvector); //can spin all the way around

	

	while(my!=null) //didn't know if a loop was neccessary, so threw it in just in case

	{

		wait(1);

	}

	

}  

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I've commented what I thought I was doing.

EDIT> Nevermind, fixed it. Amazing what a lunch break can do.

The spinners sometimes get knocked over by the balls if they are moving fast enough, like the ball launcher was. So, I'll try my luck again. Is there any way to stop this?

Just to make certain. Does the physics system only work with the new collision system (collisions with models polygons rather than collision hull)?