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jPCT - a 3d engine for Java => Support => Topic started by: Mizuki Takase on April 24, 2006, 09:45:08 pm

Title: New to everything~!!
Post by: Mizuki Takase on April 24, 2006, 09:45:08 pm

Hihi~! I first off wanted to say that JPCT is an unbelieveably kick-ass 3D engine. I am still at awe at how simple the classes seem to be and how the first person shooter example is done in so few lines... After being inspired from watching a couple of JPCT's demos, I decided to try and see if I can make some sort of third person view game. I started by looking though the first person shooter source and I tried to understand it. I even played around with it by adding a couple of lines of code, as well as modifying some values and see what happens.

Currently, I am having problems trying to understand why I cannot get the model to land properly on the ground.

First off, I initialized the player's model and textures using this code... I also placed the model 100 units above the normal starting point so that I can see the model falling down and hopefully land properly...

Code: [Select]

texMan.addTexture("ctf_r",new Texture("3ds"+c+"ctf_r.png"));
player = new Object3D(Loader.loadMD2("3ds"+c+"tris.md2", 1f));
player.setTexture("ctf_r");
theWorld.addObject(player);
player.translate(STARTING_POS.x,STARTING_POS.y-100,STARTING_POS.z);

And then at the doMovement(), I decided to take out all the camera "landing" features and changed that to this...

Code: [Select]

SimpleVector playerPos=player.getTranslation();
SimpleVector dir=new SimpleVector(0, GRAVITY, 0);
dir=theWorld.checkCollisionEllipsoid(playerPos, dir, ELLIPSOID_RADIUS, 1);
player.translate(dir);

I noticed that if the scale of the model is 0.5 and less, the model will land on the ground properly like so...
(http://www.cs.uno.edu/~tvle/misc/half.png)

If the model is scaled to anything higher than 0.5, then the model kinda goes though the floor like this...
(http://www.cs.uno.edu/~tvle/misc/full.png)

Thank you in advance to anyone that can help me figure out the problem and also a HUGE THANK YOU to JPCT and its author~~! I really hope to get comfortable with the engine and eventually make something really nice with it~!

Title: New to everything~!!
Post by: EgonOlsen on April 24, 2006, 10:00:23 pm

That's most likely caused by the y-component of ELLIPSOID_RADIUS being too low. Try to double its value and see if that helps, i.e. if it's (1,1.5,1) make if (1,3,1).

Title: New to everything~!!
Post by: Mizuki Takase on April 25, 2006, 12:58:33 am

Thanks~!!! It works!! One task down, so many more to go... :lol: I really appreciate the help that you have been giving to everyone as well as myself... Thanks!

Title: New to everything~!!
Post by: Melssj5 on May 05, 2006, 12:00:27 am

Hey Misuki. Would you mind giving me your md2 model and texture?????

Title: New to everything~!!
Post by: Mizuki Takase on May 07, 2006, 11:05:56 am

Just to make sure, I want to say that the model is not mines. I did not make that model. Since I liked Devil Hunter Yohko, I decided to try out the model on JPCT, and loved the results.. Anyway, here is the model and texture. I do not seem to know where the original readme is for the model so that sucks...
http://www.cs.uno.edu/~tvle/misc/yohko.zip

Title: New to everything~!!
Post by: Melssj5 on May 07, 2006, 10:11:32 pm

Thanks a lot Mizuki. I wont use it for comercial purposes but just for testing a new project I am doing.