371 replies to this topic

[NYS]

Hey Hansen,

I am using GM8.0 and I can't get any object to spawn at the correct x & y axis.
I was assuming this would work:
GmnBodySetPosition(body, x, y, z);
But it doesn't show the object.

I let the object display it's x, y and z axis and it says it's in a position where I should see it but it aint there.

!EDIT!

Ah, sorry! I fixed it finally

!EDIT2!

Another problem :/
http://g2f.nl/r45szz <- I'm not allowed to img tag .png files... :/
The big block in the back is moving from and towards the camera. It is supposed to push the coins (as in the game @ the fair) but they're going trough the block.

Create:

collision_shape = GmnCreateBox(global.world, xsize, ysize, zsize, 0, 0, 0);
body = GmnCreateBody(global.world, collision_shape);
GmnReleaseCollision(global.world, collision_shape);
GmnBodySetMassMatrix(body, 0, 0, 0);//It is supposed to have mass, but I don't want it to jump up n down
GmnBodyLinkObject(body, id, false);

GmnBodySetPosition(body,x,y,z);

Then I make it slide back and forth, and update it's position every step by using this:

GmnBodySetPosition(body, -10-xx, 0, z);

I am changing it's x axis and then updating it's position using GmnBodySetPosition.

I've seen createCustomSlider but I'm not really sure how to use it :/

Some help would be great!

-NYS

Edited by NYS, 09 August 2011 - 02:12 AM.

[hanson]

Hey Hansen,
...

Another problem :/
http://g2f.nl/r45szz <- I'm not allowed to img tag .png files... :/
The big block in the back is moving from and towards the camera. It is supposed to push the coins (as in the game @ the fair) but they're going trough the block.

Create:

collision_shape = GmnCreateBox(global.world, xsize, ysize, zsize, 0, 0, 0);
body = GmnCreateBody(global.world, collision_shape);
GmnReleaseCollision(global.world, collision_shape);
GmnBodySetMassMatrix(body, 0, 0, 0);//It is supposed to have mass, but I don't want it to jump up n down
GmnBodyLinkObject(body, id, false);

GmnBodySetPosition(body,x,y,z);

Then I make it slide back and forth, and update it's position every step by using this:

GmnBodySetPosition(body, -10-xx, 0, z);

I am changing it's x axis and then updating it's position using GmnBodySetPosition.

I've seen createCustomSlider but I'm not really sure how to use it :/

Some help would be great!

-NYS

I would recommend jointing the sliding object to a null object and then set the position of the null object in order to control it. A kinematic joint may work well for this. When you just set the position directly, the engine doesn't know what velocity to use to move other objects since, in theory, it has none. It jumped from point A to point B.

[NYS]

Ah, that starts making some sense

I've tried many things now with the kinematic functions, but I just fail to see how I should do this :/

[CMelva]

Hey there!

Just wanted to share my opinion on this. I really enjoyed the first post from this thread and I really think the topic starter has made a terrific job! Best wishes and good luck to you!

[ihato]

I made an extension for it. Its kinda useless because it doesnt work.
I use it only to see arguments of the scripts.

[ean]

this thing crashes when it starts up

edit: solved on page 18, disable auto-updater and add code. please put this in your topic so people dont have to read 18 pages

i added gravity and nothing happened. edit: all i had to do was this: GmnUpdate(global.world,1/60);

edit: i cant figure out how to rotate anything. edit, everything was in radians.

x=GmnBodyGetPosition(body,0);
y=GmnBodyGetPosition(body,1);
z=GmnBodyGetPosition(body,2);

xrot=radtodeg(GmnBodyGetRotation(body,0));
yrot=radtodeg(GmnBodyGetRotation(body,1));
zrot=radtodeg(GmnBodyGetRotation(body,2));

will edit when i run into the next problem

edit: cant figure out the orientation of the cylinders, compatiblity mode doesn't help.

edit: got it to work but I had to import a model.

anyway nice work so far, i will let you know if i run into any more problems.

edit: when im applying torque it seems to use euler rotations, setomegaaxis didn't work either

Ran into another problem, joints don't seem to move their children until I apply torque to their children. edit: found GmnBodySetFreezeState(dBody,state);

also, GmnUpdateFPS doesn't do anything.

edit: okay i made a simple car physics, if your interested in improving it you might want to take a look at it here: http://gmc.yoyogames...l=&fromsearch=1

wheels dont get enough traction, and the hingejoint is too weak and bendable. i tried adjusting friction to simulate rubber (didn't realease the gm6 version) but it doesn't work. Even when I lock the joint car can't go in a straight line.

Edited by ean, 31 December 2011 - 11:43 AM.

[gmx0]

Gonna redownload, I think my comp is unstable.

[Igyanata]

I have a very strange problem. I tried the example that is provided in the topic and it works fine. But when I tried to make one box on my own it didn't worked. I thought I might have missed something, so I made an exact copy each line from the example to a new project(just with the scripts in it) and it still doesn't work. I keep the dll in the same folder and I checked all the scripts and they are all the same. My version is 7.0. I also tried to save the example file into my version and it is still working, but when I copy all the codes to a separate new project it doesn't, so what I'm asking is if I am forgetting a step to connect the dll with my project or something? I really like the engine and I want to use it for a game but I can't make a clean project to work...If anyone had a problem like mine or especially if you can suggest a solution I'll be greatfull.

PS: I think it won't be a problem to make my games in the example(because it is obviously working even if I make changes to it) but I won't be able to put the physics inside another project I have already started making, so I want to know what have I done wrong.

[Boreal]

Does this support script callbacks? That would be incredibly useful.

Edited by Drivinucrazy Games, 26 February 2012 - 06:19 PM.

[playerwild0]

ok, i am a newbie, can some1 message me and tell me what each script does?? i would really appreciate it, Im trying to make a mmorg, i promise that once its finished , i will give you lots of credit, please, im probably not gunna remember to go back to this exact post, so message me pleazzzz

[Himanshu]

is ragdoll physics body supported?

[mrsmes]

Have You ever thought about helping YoYo make gm next? You could help them make the new 3d module and 3d physics engine and 3d level editor and 3d model importer and editor and loader.

Just think Imagine the money and fame and glory and popularity of the world thanking You for the wonderful support and product that You and YoYo would have Provided. You would be so happy to see them happy and adored by thousands of game maker users.