Quote:

why check down by 5000?



Because it is assumed that at some point the player is going to be in the air. 5000 is just a nice big number to use. If I only checked down by one, I would get zero as soon as the player was a distance of two away from the ground making it impossible to tell the difference between on the ground and at a distance of greater then one.

Whats more, we're checking from the center of the player object so there is a varriable distance between center and ground that needs to be calculated or offset. So in fact I never see a value of "zero" other then if the player is farther away then the distance I'm checking (5000). What I see if the distance from the player entity center to the ground +/- aorund 1 it seems.

And last but not least, rather then apply force to mimic gravity as in your code example, I just use the physics engine gravity constant and give the player mass.


ph_setgravity (vector(0, 0, -386));
phent_settype (my_entity, PH_RIGID, PH_SPHERE);
phent_setmass (my_entity, mass, PH_SPHERE);
phent_setfriction (my_entity, friction);
phent_setdamping (my_entity, damping[0], damping[1]);
phent_setelasticity (my_entity, elasticity[0], elasticity[1]);

....

if(!key_space)
{
jumping=0;
}
if(key_space)
{
if(!jumping)
{
vec_set(temp, my_entity.x);
temp.z -= 5000;
if(c_trace (my_entity.x,temp,IGNORE_ME|IGNORE_PASSABLE|IGNORE_MODELS|IGNORE_SPRITES) <= 25)
{
phent_addvelcentral(my_entity,vector(0,0,250));
}
}
jumping=1;
}

Last edited by jfizer; 08/29/07 06:00.