Dark Physics Character Controllers Jumping

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binsky

15

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Joined: 6th Feb 2009

Location:

Posted: 28th Feb 2010 06:24

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Hey guys, I just have some real quick questions about the character controllers and jumping. I searched around the forums and havnt found anything that has really helped me. I made up my own little jumping code, and also barrowed a couple of things from sparkys collision FPS character program.

CODE:

+ Code Snippet

dbPhyRayCastAllShapes(dbObjectPositionX(2),dbObjectPositionY(2),dbObjectPositionZ(2),0,-1,0);

	int colliding;
	int jumptimer;

	//colliding = dbObjectCollision(1,2);

	if(dbPhyGetRayCastDistance() < 50)
	{
		colliding = 1;
	}
	else
	{
		colliding = 0;
	}
	dbText(0,50,dbStr(float(colliding)));

	if ( colliding == 1 ) 
	{
		if ( dbSpaceKey() == 1 && jumptimer == 0 ) 
		{
			dbXRotateObject(2,dbObjectAngleX(2)-(90));
			dbPhyMoveCharacterController(2,300.0);
			dbXRotateObject(2,dbObjectAngleX(2)+(90));
			jumptimer = 5000;
			
		}
	}

	if( colliding == 1 && jumptimer > 0 )
	{
		jumptimer--;
	}

Now basically my problem is i just cant get jumping to work... First of all my first problem is detecting whether the character controller and the ground are colliding. I tried using ray casting, but it didn't work well. Then i tried using darkgdks collision functions, but that always returns 1 no matter if the object is in the air or not. So that's my first problem. Then after that, the controller jumps in the air, but then gets stuck at the tops and just keeps on trying to go up. Basically i cant get it to work so that if you only press the space key once, it only jumps once. Im going to guess this is a timing issue.

Any help would be appreciated... Thanks!

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binsky

15

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Joined: 6th Feb 2009

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Posted: 28th Feb 2010 19:56

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This thread can be closed, i fixed all my problems.

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bergice

16

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Joined: 5th Jun 2007

Location: Oslo,Norway

Posted: 18th Apr 2010 17:35

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Quote: "This thread can be closed, i fixed all my problems."

How?

A good game designer can make all the diff-erence in the world mister freeman

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binsky

15

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Joined: 6th Feb 2009

Location:

Posted: 24th Apr 2010 05:17

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I kinda stopped using DarkPhysics, but here was my code.

// Dark GDK - The Game Creators - www.thegamecreators.com

// the wizard has created a very simple project that uses Dark GDK
// it contains the basic code for a GDK application

// whenever using Dark GDK you must ensure you include the header file
#include "DarkGDK.h"
#include "DarkPhysics.h"

void MakeLevel();
void MakePlayer();
void MovePlayer();
// the main entry point for the application is this function
void DarkGDK ( void )
{
	// turn on sync rate and set maximum rate to 60 fps
	dbSyncOn   ( );
	dbSyncRate ( 60 );

dbSetDir("Files");
	// Setup Physx
	dbPhyStart();

MakeLevel();
	MakePlayer();
	// our main loop
	while ( LoopGDK ( ) )
	{
		dbPhyUpdate();
		MovePlayer();
		dbText(0,0,dbStr(dbObjectPositionY(2)));
		// update the screen
		dbSync ( );
	}

// return back to windows
	return;
}

void MakeLevel()
{
	//dbLoadObject("level1.dbo",1);
	dbLoadObject("double_dual/double_dual.dbo",1);
	dbScaleObject(1,50,50,50);
	dbPositionObject(1,0,0,0);
	dbPhyMakeRigidBodyStaticMesh(1);
	dbSetObjectCollisionToPolygons(1); 
}

void MakePlayer()
{
	dbMakeObjectBox(2,5,5,5);
	dbPositionObject(2,0,740,0);
	dbPhyMakeBoxCharacterController(2, dbObjectPositionX(2), dbObjectPositionY(2), dbObjectPositionZ(2), 2.5, 2.5, 2.5, 1, 1.5, 45.0);
	dbSetObjectCollisionToPolygons(2);
	//dbHideObject(2);
}

float fCameraAngleX = 0.0f;
float fCameraAngleY = 0.0f;
int jumptimer = 0;
float jumpspeed = -250;
float jumptime = 31;
float jump = 0;
float startgy= 0;
float oldgy = 0;
float jgy = 0;
float oldjgy = 0;
void MovePlayer()
{
	// Position Camera
	dbPositionCamera(dbObjectPositionX(2),dbObjectPositionY(2)+20,dbObjectPositionZ(2));
	dbRotateCamera(dbObjectAngleX(2),dbObjectAngleY(2),dbObjectAngleZ(2));

dbYRotateObject( 2,dbObjectAngleY(2) + dbMouseMoveX()/3.0f );
	//dbXRotateObject( 2,dbObjectAngleX(2) + dbMouseMoveY()/3.0f );

// create a rotation axis based on mouse movement
	fCameraAngleX = dbWrapValue ( fCameraAngleX + dbMouseMoveY ( ) * 0.4f );
	fCameraAngleY = dbWrapValue ( fCameraAngleY + dbMouseMoveX ( ) * 0.4f );

// rotate camera
	dbXRotateCamera ( fCameraAngleX );
	//dbYRotateCamera ( fCameraAngleY );

if(fCameraAngleX > 80 && fCameraAngleX < 180)
	{
		fCameraAngleX = 80;
	}

if(fCameraAngleX < 270 && fCameraAngleX > 180)
	{
		fCameraAngleX = 270;
	}

//Fixes gravity
	dbPhyMoveCharacterController(2,1);
	dbPhyMoveCharacterController(2,-1);

dbPhyRayCastAllShapes(dbObjectPositionX(2),dbObjectPositionY(2),dbObjectPositionZ(2),0,-1,0);

int colliding;
	int jumptimer;
	int jumping;

//colliding = dbObjectCollision(1,2);
	/*
	if(dbPhyGetRayCastDistance() < 50)
	{
		colliding = 1;
	}
	else
	{
		colliding = 0;
	}
	dbText(0,50,dbStr(float(colliding)));
	dbText(0,63,dbStr(float(jumptimer)));

if ( colliding = 1 ) 
	{
		if ( dbSpaceKey() == 1 && jumptimer == 0 ) 
		{
			jumping = 1;
			dbXRotateObject(2,dbObjectAngleX(2)-(90));
			//dbPhyMoveCharacterController(2,500.0);
			dbPhySetCharacterControllerDisplacement(2,0,-500);
			dbXRotateObject(2,dbObjectAngleX(2)+(90));
			jumptimer = 50;	
		}
		else
	}

if( colliding == 1 && jumptimer > 0 )
	{
		jumptimer--;
	}
	*/

oldjgy = dbObjectPositionY(2);
	dbPhySetCharacterControllerDisplacement(2,98,0);

dbText(0,50,dbStr(jump));
	if ( dbSpaceKey() == 1 && jump == 0 )
	  {
         startgy = dbObjectPositionY( 2 );
         jump = 1;
         oldgy = 0;
      }
   
      if ( jump > 0 )
	  {
         //this checks to see if characher has a restricted jump ( platform above the head )
         if ( dbObjectPositionY( 2 ) == oldgy )
		 {
            jump = jumptime - 1;
         }
   
         oldgy = dbObjectPositionY( 2 );
         //move charachter up
         dbPhySetCharacterControllerDisplacement(2,0,jumpspeed);
         //displacement only seems to work when characher is moving - so move it a wee bit then back a wee bit
		 dbPhyMoveCharacterController(2,0.1);
		 dbPhyMoveCharacterController(2,-0.1);
         jump = jump + 1;   //incrament timer
         if ( jump == jumptime )
		 {
            jump = -1;
         }
   
      }
	  
	  if( jump < 0 )
	  {
         jump = jump - 1;
         if ( jump < ( 0 - jumptime ) )
		 {
            jgy = dbObjectPositionY( 2 );
            if ( jgy == oldjgy )
			{
               jump = 0;
            }
   
         }
      }

if(dbKeyState(17) == 1)
	{
		dbPhyMoveCharacterController(2, 200.0);
	}

if(dbKeyState(31) == 1)
	{
		dbPhyMoveCharacterController(2, -200.0);
	}

if(dbKeyState(30) == 1)
	{
		dbPhySetCharacterControllerDisplacement(2,0,0);
		dbYRotateObject(2,dbObjectAngleY(2)-(90.0));
		dbPhyMoveCharacterController(2,200.0);
		dbYRotateObject(2,dbObjectAngleY(2)+(90.0));
	}

if(dbKeyState(32) == 1)
	{
		dbPhySetCharacterControllerDisplacement(2,0,0);
		dbYRotateObject(2,dbObjectAngleY(2)+(90.0));
		dbPhyMoveCharacterController(2,200.0);
		dbYRotateObject(2,dbObjectAngleY(2)-(90.0));
	}

dbXRotateObject(2,dbObjectAngleX(2)+(90));
	dbPhyMoveCharacterController(2,200.0);
	dbXRotateObject(2,dbObjectAngleX(2)-(90));
}

+ Code Snippet


// Dark GDK - The Game Creators - www.thegamecreators.com

// the wizard has created a very simple project that uses Dark GDK
// it contains the basic code for a GDK application

// whenever using Dark GDK you must ensure you include the header file
#include "DarkGDK.h"
#include "DarkPhysics.h"

void MakeLevel();
void MakePlayer();
void MovePlayer();
// the main entry point for the application is this function
void DarkGDK ( void )
{
	// turn on sync rate and set maximum rate to 60 fps
	dbSyncOn   ( );
	dbSyncRate ( 60 );

	dbSetDir("Files");
	// Setup Physx
	dbPhyStart();

	MakeLevel();
	MakePlayer();
	// our main loop
	while ( LoopGDK ( ) )
	{
		dbPhyUpdate();
		MovePlayer();
		dbText(0,0,dbStr(dbObjectPositionY(2)));
		// update the screen
		dbSync ( );
	}

	// return back to windows
	return;
}

void MakeLevel()
{
	//dbLoadObject("level1.dbo",1);
	dbLoadObject("double_dual/double_dual.dbo",1);
	dbScaleObject(1,50,50,50);
	dbPositionObject(1,0,0,0);
	dbPhyMakeRigidBodyStaticMesh(1);
	dbSetObjectCollisionToPolygons(1); 
}

void MakePlayer()
{
	dbMakeObjectBox(2,5,5,5);
	dbPositionObject(2,0,740,0);
	dbPhyMakeBoxCharacterController(2, dbObjectPositionX(2), dbObjectPositionY(2), dbObjectPositionZ(2), 2.5, 2.5, 2.5, 1, 1.5, 45.0);
	dbSetObjectCollisionToPolygons(2);
	//dbHideObject(2);
}

float fCameraAngleX = 0.0f;
float fCameraAngleY = 0.0f;
int jumptimer = 0;
float jumpspeed = -250;
float jumptime = 31;
float jump = 0;
float startgy= 0;
float oldgy = 0;
float jgy = 0;
float oldjgy = 0;
void MovePlayer()
{
	// Position Camera
	dbPositionCamera(dbObjectPositionX(2),dbObjectPositionY(2)+20,dbObjectPositionZ(2));
	dbRotateCamera(dbObjectAngleX(2),dbObjectAngleY(2),dbObjectAngleZ(2));

	dbYRotateObject( 2,dbObjectAngleY(2) + dbMouseMoveX()/3.0f );
	//dbXRotateObject( 2,dbObjectAngleX(2) + dbMouseMoveY()/3.0f );


	// create a rotation axis based on mouse movement
	fCameraAngleX = dbWrapValue ( fCameraAngleX + dbMouseMoveY ( ) * 0.4f );
	fCameraAngleY = dbWrapValue ( fCameraAngleY + dbMouseMoveX ( ) * 0.4f );

	// rotate camera
	dbXRotateCamera ( fCameraAngleX );
	//dbYRotateCamera ( fCameraAngleY );


	if(fCameraAngleX > 80 && fCameraAngleX < 180)
	{
		fCameraAngleX = 80;
	}

	if(fCameraAngleX < 270 && fCameraAngleX > 180)
	{
		fCameraAngleX = 270;
	}

	//Fixes gravity
	dbPhyMoveCharacterController(2,1);
	dbPhyMoveCharacterController(2,-1);

	dbPhyRayCastAllShapes(dbObjectPositionX(2),dbObjectPositionY(2),dbObjectPositionZ(2),0,-1,0);

	int colliding;
	int jumptimer;
	int jumping;

	//colliding = dbObjectCollision(1,2);
	/*
	if(dbPhyGetRayCastDistance() < 50)
	{
		colliding = 1;
	}
	else
	{
		colliding = 0;
	}
	dbText(0,50,dbStr(float(colliding)));
	dbText(0,63,dbStr(float(jumptimer)));

	if ( colliding = 1 ) 
	{
		if ( dbSpaceKey() == 1 && jumptimer == 0 ) 
		{
			jumping = 1;
			dbXRotateObject(2,dbObjectAngleX(2)-(90));
			//dbPhyMoveCharacterController(2,500.0);
			dbPhySetCharacterControllerDisplacement(2,0,-500);
			dbXRotateObject(2,dbObjectAngleX(2)+(90));
			jumptimer = 50;	
		}
		else
	}

	if( colliding == 1 && jumptimer > 0 )
	{
		jumptimer--;
	}
	*/

	oldjgy = dbObjectPositionY(2);
	dbPhySetCharacterControllerDisplacement(2,98,0);

	dbText(0,50,dbStr(jump));
	if ( dbSpaceKey() == 1 && jump == 0 )
	  {
         startgy = dbObjectPositionY( 2 );
         jump = 1;
         oldgy = 0;
      }
   
      if ( jump > 0 )
	  {
         //this checks to see if characher has a restricted jump ( platform above the head )
         if ( dbObjectPositionY( 2 ) == oldgy )
		 {
            jump = jumptime - 1;
         }
   
         oldgy = dbObjectPositionY( 2 );
         //move charachter up
         dbPhySetCharacterControllerDisplacement(2,0,jumpspeed);
         //displacement only seems to work when characher is moving - so move it a wee bit then back a wee bit
		 dbPhyMoveCharacterController(2,0.1);
		 dbPhyMoveCharacterController(2,-0.1);
         jump = jump + 1;   //incrament timer
         if ( jump == jumptime )
		 {
            jump = -1;
         }
   
      }
	  
	  if( jump < 0 )
	  {
         jump = jump - 1;
         if ( jump < ( 0 - jumptime ) )
		 {
            jgy = dbObjectPositionY( 2 );
            if ( jgy == oldjgy )
			{
               jump = 0;
            }
   
         }
      }

		
	if(dbKeyState(17) == 1)
	{
		dbPhyMoveCharacterController(2, 200.0);
	}

	if(dbKeyState(31) == 1)
	{
		dbPhyMoveCharacterController(2, -200.0);
	}

	if(dbKeyState(30) == 1)
	{
		dbPhySetCharacterControllerDisplacement(2,0,0);
		dbYRotateObject(2,dbObjectAngleY(2)-(90.0));
		dbPhyMoveCharacterController(2,200.0);
		dbYRotateObject(2,dbObjectAngleY(2)+(90.0));
	}

	if(dbKeyState(32) == 1)
	{
		dbPhySetCharacterControllerDisplacement(2,0,0);
		dbYRotateObject(2,dbObjectAngleY(2)+(90.0));
		dbPhyMoveCharacterController(2,200.0);
		dbYRotateObject(2,dbObjectAngleY(2)-(90.0));
	}

	dbXRotateObject(2,dbObjectAngleX(2)+(90));
	dbPhyMoveCharacterController(2,200.0);
	dbXRotateObject(2,dbObjectAngleX(2)-(90));
}

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Clonkex

Forum Vice President

13

Years of Service

User Offline

Joined: 20th May 2010

Location: Northern Tablelands, NSW, Australia

Posted: 22nd May 2010 03:26

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You didn't need to use Dark GDK (unless you were using it anyway), because I found a simple way to make a character controlling system, using only raycasting. It should work perfectly (in theory) but since I haven't been able to get the DarkPhysics phy ray cast all shapes command to work I haven't tested it. Still, here is the code (note that it may not be wuite correct as I don't really remember the DP raycasting commands):

+ Code Snippet

gravity#=0.5

phy ray cast all shapes camera position x(),camera position y(),camera position z(),0,1,0 //or whatever makes it cast down, I can't remember

if b3d get distance to camera(phy get hit position x(), phy get hit position y(), phy get hit position z())>3
 position camera camera position x(),camera position y()-gravity#,camera position z()
else
 if b3d get distance to camera(phy get hit position x(), phy get hit position y(), phy get hit position z())=<3
  position camera camera position x(),phy get hit position y()+3,camera position z()
 endif
endif

Anyway it is only in theory that that should work. I do need another raycaster, though.

Clonkex

Making games is easy.....finishing them is a different matter.

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Dark Physics & Dark A.I. & Dark Dynamix / Dark Physics Character Controllers Jumping