I've looked everywhere, KHMovement, FPS guides, the manual, these forums and I can't find a solution to my jumping problem. The code works, just not smoothly. I want a nice steady arc upward and downward at the same speed like the old Mario games jumping. The code below works it's just sometimes the player will hang in the air and "fly" before they come back down. Can anyone help me out and tell me what I'm doing wrong?

action players_vehicle
{
player = me;
my.falling = 0;
my.shadow = on;

while (lives > 0)
{
vec_set(temp,my.x);
temp.z -= 1000;

my.fall_distance = c_trace(my.x, temp, IGNORE_ME|IGNORE_PASSABLE|IGNORE_SPRITES|ACTIVATE_SONAR|SCAN_TEXTURE|USE_BOX);

//check if jumping
if (my.jumping != 0)
{
if (my.jump_height > 256 && my.jumping == 1)
{
my.jumping = 0;
move_vec.z = 0;
my.jump_height = 0;
}
else
{
if (move_vec.z > 1*time)
{
move_vec.z -= .3*time;
my.jump_height += move_vec.z;
}
else
{
move_vec.z = 1*time;
my.jump_height += move_vec.z;
}
}
}

//check if falling
if (my.fall_distance > 500 && sign(my.fall_distance) != -1 && my.jumping == 0)
{
my.falling = 1;
}
else
{
if (my.fall_distance < 500 && my.falling == 0 && my.jumping == 0)
{
move_vec.z = -my.fall_distance*time;
}
}
if (my.fall_distance > 256)
{
my.falling = 1;
if (move_vec.z > -20*time)
{
move_vec.z -= .3*time;
}
}


if (key_j)
{
if (my.jumping == 0 && my.falling == 0 && my.fall_distance < 1)
{
my.jumping = 1;
move_vec.z = 45 * time;
}
}



move_vec[0] = (key_cur + key_cul)*25 *time;
if (key_cur == 1){my.pan = 0;}
if (key_cul == 1){my.pan = 180;}

c_move(me,move_vec,nullvector,IGNORE_PASSABLE|GLIDE);
player_animate();
handle_camera();
wait(1);
}
}

function player_animate()
{
my.skill1 += 3*time_step;
if (my.skill1 > 100) {my.skill1 -= 100;}
if (my.falling == 1)
{
if (my.fall_distance < 0)
{
move_vec.z = -my.fall_distance*time;
}
else
{
my.falling = 0;
}
}

if (move_vec[0] == 0 && move_vec[1] == 0)
{
ent_animate(me,"idle",my.skill1,ANM_CYCLE);
}
else
{
ent_animate(me,"roll",my.skill1,ANM_CYCLE);
}
}

function handle_camera()
{
camera.x = my.x;
camera.y = my.y - 1500;
camera.z = my.z + 100;
camera.pan = 90;
}

*bump* come on someone has to have something. I'm writing up a tutorial on creating a side-scroller but unless I can figure this jump script out it aint gonna happen.

Okay my way is kinda crazy simple and basically works like real life. I don't know if it will help.

Youre player has 3 alocated skils for absolute movement so in c_move you put

c_move(me,vector(my.speedx,0,0), vector(my.absx, my.absy, my.absz), GLIDE)

where absx absy and absz are the absolute (i.e. aligned to room axis) movements

Somewhere you do a trace that checks to see if the player is NOT on the floor if so you increase the my.absz by your gravity amount. If the player is on the floor then the increasing the my.absz stops so they nolonger accelerate and my.absz = 0 so they stop falling.

For jumping all you do is check that the player is on the ground then if it is, when a key is pressed my.absz = 20 (or some suitable value) this cause the player to jump up in the air and then the gravity kicks in dropping them back to the ground smoothly.

um yeah I rushed that so if it didn't make sense here's my current game code showing the trace that handles the whole thing.




If you need help with my rushed message I will probably be around some other time to reexplain it I have to go so I hope that helped.

Sydan

Thanks man!!!!!!! That totally makes sense. It so simple I dont see why I didnt figure something like that out sooner LOL. Thanks again. Thats a BIG help.

No problem in all honesty I started doing what you did and then I made a game with that, it didn't work I gave up forgot your method made a new game and worked this one out so yeah. Did you try to use the fps tutorial from acknex?

Does anyone have the code for Grimber's FPS tutorial 1 or 2 from acknex?

I cant seem to get the jumping working from his code, are there any mistakes in what he has wrote?

The code I posted is originally from the FPS tuts modified for side scrolling. The jumping code was the same though. But I wanted something smoother ya know so I started tweaking it and experimenting. DJMASTER if you'd like I can send the tuts to you. The code in them works for me.

Well, I'm trying to implement your code but it aint working. The player shoots to the ceiling and then halls a$$ to the right. LOL!!!! its funny but not what I need.

Got it working but now my player floats above the ground.

figured it out! Thanks.