How can i make objects (e.g. humans) walk around correctly?

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MES

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Joined: 9th Feb 2008

Location: AFK

Posted: 29th Jul 2008 13:34

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Hi,
I have a DirectX-File with a human, that has a boned animation.
So far it's working correctly.

But when I want that human to walk around in my city it just walks straight. When there is a wall it walks through and the human is away....
I'm using this code so far:
That's how I load the human (DirectX-File)

+ Code Snippet

	dbLoadObject ( "Textures/human.x", 1000);		
	dbPositionObject ( 1000, 1000, 7, 1000 );
	dbSetObjectLight (1000, 0 );
	dbScaleObject ( 1000, 3000, 2500, 3000 );
	dbYRotateObject (1000, 180 );
	dbSetObjectCollisionToPolygons	(1000);
	dbLoopObject ( 1000 , 0, 20);
	dbSetObjectSpeed ( 1000, 40 );

Thats how I let the human walk in the While-Loop

+ Code Snippet

dbMoveObject ( 1000, -1 );

I've already tried to let the human Turn at the Y Axis that it walks a circle, but when i use this...:

+ Code Snippet

	dbYRotateObject (1000, 80 );
	dbMoveObject ( 1000, -1 );

...it's the same result like the first code.
Why is it not rotating at the Y-Axis?

Do you have any ideas?
I'v read the GDK-Documentation and searched for functions, but found nothing...

kind regards

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RancidRat

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Joined: 19th Feb 2008

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Posted: 29th Jul 2008 21:19 Edited at: 29th Jul 2008 21:22

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Hi
firstly:
why do you say dbMoveObject ( 1000, -1 );?
why not dbMoveObject ( 1000, 1 );?
since now it is moving backwards... it doesnt really make a difference but I am asuming that your model is loading the wrong way around... to fix that you can say: dbYRotateObject(1000, 180) and then use dbFixObjectPivot(1000); do this when you load you model.
- assuming you have this problem

and then...

dbYRotateObject (1000, 80 );
is the right way to rotate it like you want to. But remember, the 80 is not an amount like in dbMoveObject, it is more like a float angle from 0-360 relative to the object's y-axis (as far as I understand it). So you are constantly telling it to rotate 80 degrees, see the problem? instead do something like this:

+ Code Snippet

float rotate = dbObjectAngleY(1000);

// then in the loop:
dbYRotateObject(1000,rotate);
rotate++;
if(rotate > 360) rotate = 0;

This will rotate it clockwise, for anti use rotate--;

if you wanted to rotate the object with the left and right keys for example:

+ Code Snippet

float rotate = dbObjectAngleY(1000);

//LOOP:

if (dbRightKey() == 1)
{
dbYRotateObject(1000,rotate);
rotate++;
if(rotate > 360) rotate = 0;
}

if (dbLeftKey() == 1)
{
dbYRotateObject(1000,rotate);
rotate--;
if(rotate < 0) rotate = 360;
}

now the reason it is walking through the walls is because there is a not colision code as far as I can tell. That is a whole other can of worms....

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MES

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Location: AFK

Posted: 30th Jul 2008 19:28

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Thank you very much for your codes. That helped me a lot!

+ Code Snippet

why do you say dbMoveObject ( 1000, -1 );?
why not dbMoveObject ( 1000, 1 );?

I don't know why, but when i use a positive number, it walks backwards, even if i use dbFixObjectPivot(1000);

+ Code Snippet

if you wanted to rotate the object with the left and right keys for example:

I already use that for the Camera (first person), so that makes no sense.

+ Code Snippet

now the reason it is walking through the walls is because there is a not colision code as far as I can tell. That is a whole other can of worms....

I've already tried to manage that with the old code, but it didn't work...
And with the new Code:

+ Code Snippet

	if ( dbObjectCollision (1000, 0) ==1 )
	{	rotate--;
	}

It's also walking straight through the Object (0=Camera)
And: I do not only want the Object(1000) not to walk through the Camera(0), also through other Objects(0-100), so:

+ Code Snippet

	if ( dbObjectCollision (1000, /*WHAT HERE?*/) ==1 )
	{	rotate--;
	}

read comment..

Thank you very much for your help so far!

kind regards

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