/*
=============================================================================
  
  File: HELLORAD.C
  Author: Radouan Khechane (rad@cyberdude.com)
  Date: 10th October 1998
  Description: Prints "Hello Rad!" on the Net Yaroze PlayStation

  Copyright (c) 1998 by Radouan Khechane.

=============================================================================
*/

/*
====================
  I N C L U D E S
====================
*/
#include <libps.h>                     // PlayStation library
#include "pad.h"                       // joypad header file

/* 
====================
   D E F I N E S
====================
*/
#define OT_LENGTH      (1)             // length of Ordering Table
#define SCREEN_WIDTH   (320)           // screen x resolution
#define SCREEN_HEIGHT  (240)           // screen y resolution

/* 
====================
   G L O B A L S
====================                                  
*/
GsOT      OT_Header[2];                // Ordering Table Headers
GsOT_TAG  OT_Tag[2][1<<OT_LENGTH];     // Ordering Tables

/*  
====================
     M A I N
====================
*/
int main(void)
{
    int index;               // index variable
    u_long PADstatus = 0;    // state of controller pad
    int activeBuffer;        // double buffer index

    // declare current video signalling system
    SetVideoMode(MODE_PAL);
    // initialise graphics system
    GsInitGraph(SCREEN_WIDTH, SCREEN_HEIGHT, GsOFSGPU|GsNONINTER, 1, 0);
    // define double buffer
    GsDefDispBuff(0, 0, 0, SCREEN_HEIGHT);

    // set up the ordering table headers
    for (index = 0; index < 2; index++)
    {   
        // set to OT length
        OT_Header[index].length = OT_LENGTH;
        // set to OT location
        OT_Header[index].org = OT_Tag[index];
    }

    // load basic font pattern to the frame buffer
    FntLoad(960, 256);
    // open print stream
    FntOpen(125, 110, SCREEN_WIDTH, SCREEN_HEIGHT, 0, 512);

    PadInit();  // set up the controller pad

    // while 'select & start' not pressed
    while (!((PADstatus & PADselect) && (PADstatus & PADstart)))
    {
        PADstatus = PadRead(1);    // read status of controller pad 1

        // get drawing buffer number
        activeBuffer = GsGetActiveBuff();

        // initialise odering table
        GsClearOt(0, 0, &OT_Header[activeBuffer]);

        // wait for completion of all drawing
        DrawSync(0);
        // wait for vertical retrace
        VSync(0);

        // swap double buffers (display and drawing buffer)
        GsSwapDispBuff();

        // register clear (screen) command
        GsSortClear(0x0, 0x0, 0x0, &OT_Header[activeBuffer]);
        // register request to draw ordering table
        GsDrawOt(&OT_Header[activeBuffer]);

        // output to print stream
	FntPrint("Hello Rad!\n");
        // draw print stream contents
        FntFlush(-1);
    }

    ResetGraph(3);  // cancel current drawing and flush command queue

    return(0);
}