3rd Person Camera Questions - GameCreators Forum

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Bluethunder

15

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Joined: 12th Aug 2009

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Posted: 4th Oct 2009 06:05

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Hey, I'm sort of new to DarkGDK. I was trying to create a 3rd person camera that would follow your character around while he moved. I also wanted to be able to right click and drag to rotate the camera thats behind the character, and then continue moving the character while preserving that camera rotation, but the camera still staying behind the character.

This is what I have so far...

+ Code Snippet

#include "DarkGDK.h"
void DarkGDK ( void )
{
dbSyncOn ( );
dbSyncRate ( 60 );

dbLoadObject("wheel.x",1);
dbMakeCamera(1);
dbPositionObject(1,0,0,0);
dbPositionCamera(1,0,0,-10);
dbSetCameraToObjectOrientation(1,1);

while ( LoopGDK ( ) )
{
if(dbUpKey())dbMoveObject(1,0.7f);
if(dbDownKey())dbMoveObject(1,-0.4f);
if(dbLeftKey())dbTurnObjectLeft(1,3);
if(dbRightKey())dbTurnObjectRight(1,3);

//dbSetCameraToFollow(1, dbObjectPositionX(1), dbObjectPositionY(1), dbObjectPositionZ(1), dbObjectAngleY(1), 10, 0, 0, 0);
//dbYRotateCamera(dbObjectAngleY(1));
dbSync ( );
}
return;
}

The problem is that the dbSetCameraToFollow doesn't seem to work? When it's commented out, I get the wheel loaded and then I can see it and move it around in front of the camera. When I uncomment the commented code, I just get a green screen.

Someone please help! This has been confusing me for several days...

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Bluethunder

15

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Joined: 12th Aug 2009

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Posted: 4th Oct 2009 21:01

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Anyone?

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Bluethunder

15

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Joined: 12th Aug 2009

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Posted: 5th Oct 2009 01:42

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This is still confusing me... a reply of any sort would be nice... o.O

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pcRaider

17

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Joined: 30th May 2007

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Posted: 5th Oct 2009 02:17 Edited at: 5th Oct 2009 02:17

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this

+ Code Snippet


#include "DarkGDK.h"
void DarkGDK ( void )
{
	dbSyncOn ( );
	dbSyncRate ( 60 );
dbMakeMatrix( 1,500,500,20,20);
//	dbLoadObject("wheel.x",1);
dbMakeObjectCone( 1,2);
dbXRotateObject(1,90);
dbSetObjectCull (1,0);
dbFixObjectPivot ( 1);
	dbMakeCamera(1);

	dbPositionObject(1,0,0,0);
	dbPositionCamera(1,0,0,-10);
	dbSetCameraToObjectOrientation(1,1);

float YAngle;
float R;
	while ( LoopGDK ( ) )
	{
		if(dbShiftKey())R=R+1;
		if(dbControlKey())R=R-1;

		if(dbUpKey())dbMoveObject(1,0.7f);
		if(dbDownKey())dbMoveObject(1,-0.4f);
		if(dbLeftKey()) YAngle=YAngle-1;
		if(dbRightKey())YAngle=YAngle+1;
		dbYRotateObject(1, YAngle); 

		dbSetCameraToFollow(1, dbObjectPositionX(1), dbObjectPositionY(1), dbObjectPositionZ(1), YAngle+R, 10, 11, 1, 0);
		dbPointCamera(1,dbObjectPositionX(1), dbObjectPositionY(1), dbObjectPositionZ(1));
		//dbYRotateCamera(dbObjectAngleY(1));
		dbSync ( );
	}
return;
}

read this
http://forum.thegamecreators.com/?m=forum_view&t=123485&b=10

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Mista Wilson

16

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Joined: 27th Aug 2008

Location: Brisbane, Australia

Posted: 5th Oct 2009 04:25

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You are assuming camera 1 is the default GDK camera. It is NOT. Camera 0 (Zero) is the default camera in GDK, you are calling some commands and passing in camera 1, and others you are passing no camera value, so it will use the default camera, which is 0.

You can call dbSetCurrentCamera(int iCamID); to set the default camera to something other than 0... then when you call for instance :

dbYRotateCamera(dbObjectAngleY(1));

it will use the new default.

Of course, it would just be alot easier to reference the camera you intend to affect in the command, so using the above command again it would look like :

dbYRotateCamera(1, dbObjectAngle(1));

If it ain't broke.... DONT FIX IT !!!

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Dark GDK / 3rd Person Camera Questions