// Original file: Copyright (C) 1996 Sony Computer Entertainment Inc. All Rights Reserved

/*Use:

	Call PadInit(); as part of initialisation in main

	Each frame (VSync loop), call PadRead() this puts pad status into an unsigned long variable

	E.g. 
    
	u_long padStatus;
    padStatus = PadRead();

	Test individual buttons by masking the pad status variable with the #defined constants in pad.h

	E.g. 
    
	if (padStatus & PADLleft)	 // Pad L left button is pressed
    {
		// do actions here
	}
*/

#include <libps.h>
#include "pad.h"

// low-level pad buffers: never need to touch
volatile u_char *bb0, *bb1;

// call once only in program initialisation
void PadInit (void)
{
	GetPadBuf(&bb0, &bb1);
}

// call once per VSync(0)
// puts controller pad status into unsigned long integer
	  
// please refer to the manuals if you want explanation 
// of the internals of this function

u_long PadRead(void)
{
	return(~(*(bb0+3) | *(bb0+2) << 8 | *(bb1+3) << 16 | *(bb1+2) << 24));
}