/*
   dsspec - Nintendo DS Sinclair Spectrum 48K emulator.

   Copyright (C) 2006  Ian Cowburn
   
   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License
   as published by the Free Software Foundation; either version 2
   of the License, or (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  
   $Id$
*/

#include <stdlib.h>
#include <stdio.h>
#include <nds.h>

#include "framebuffer.h"
#include "gui.h"
#include "z80.h"
#include "spec.h"
#include "keyboard.h"
#include "error.h"

#include "splashimg_bin.h"

/* ---------------------------------------- STATIC DATA
*/
static const char *main_menu[]=
	{
	    "Reset Spectrum",
	    "Select Tape",
	    "Sticky Keys On",
	    "Sticky Keys Off",
	    "Define Joystick",
	    "Cancel",
	    NULL
	};

typedef enum
{
    MenuReset,
    MenuSelectTape,
    MenuStickyOn,
    MenuStickyOff,
    MenuDefineJoystick
} MenuOpt;


/* ---------------------------------------- DISPLAY FUNCS
*/
static void VBlankFunc(void)
{
    scanKeys();
}

static void Splash(void)
{
    static const char *text[]=
    {
    	"DS-SPEC",
	"\177 2006 Ian C",
	" ",
	"SPECTRUM ROM",
	"\177 Amstrad PLC",
	" ",
	"Manic Miner",
	"by Matthew Smith",
	" ",
	"Ant Attack by",
	"Sandy White/Angela Sutherland",
	" ",
	"Thrust by",
	"Jeremy Smith and D.Lowe", 
	" ",
	"Only play these images if",
	"you legallly own a copy.",
	" ",
	"PRESS A TO CONTINUE",
	" ",
	"http://www.noddybox.co.uk/",
	NULL
    };

    sImage img;
    int f;

    loadPCX(splashimg_bin,&img);
    image8to16(&img);
    dmaCopy(img.data8,BG_GFX,SCREEN_WIDTH*SCREEN_HEIGHT*2);

    FB_Clear();

    for(f=0;f<SCREEN_HEIGHT;f++)
    {
	FB_HLine(0,SCREEN_WIDTH-1,f,FB_RGB(f/8,0,0));
    }

    FB_Box(0,0,SCREEN_WIDTH,SCREEN_HEIGHT,FB_RGB(31,31,31));

    for(f=0;text[f];f++)
    {
	FB_Centre(text[f],10+f*8,FB_RGB(31,31,31),-1);
    }

    while(!(keysDown() & KEY_A))
    {
	swiWaitForVBlank();
    }
}


/* ---------------------------------------- MAIN
*/
int main(int argc, char *argv[])
{
    Z80 *z80;

    powerON(POWER_ALL_2D);

    videoSetMode(MODE_5_2D | DISPLAY_BG2_ACTIVE);

    vramSetBankA(VRAM_A_MAIN_BG_0x6000000);
    BG2_CR = BG_BMP16_256x256;
    BG2_XDX = 0x100;
    BG2_XDY = 0;
    BG2_YDX = 0;
    BG2_YDY = 0x100;
    BG2_CX = 0;
    BG2_CY = 0;

    videoSetModeSub(MODE_5_2D | DISPLAY_BG2_ACTIVE);

    vramSetBankC(VRAM_C_SUB_BG_0x6200000);
    SUB_BG2_CR = BG_BMP16_256x256;
    SUB_BG2_XDX = 0x100;
    SUB_BG2_XDY = 0;
    SUB_BG2_YDX = 0;
    SUB_BG2_YDY = 0x100;
    SUB_BG2_CX = 0;
    SUB_BG2_CY = 0;

    irqInit();
    irqSet(IRQ_VBLANK,VBlankFunc);

    keysSetRepeat(30,15);

    FB_Init(BG_GFX_SUB);

    Splash();

    /* Initialise processor and the Spectrum
    */
    z80=Z80Init(SPECPeek,SPECPoke,SPECReadPort,SPECWritePort,SPECDisPeek);

    if (!z80)
    {
    	DSSPEC_Error("Failed to create\na Z80 processor");
    }

    SPECInit(BG_GFX,z80);
    SK_DisplayKeyboard(BG_GFX_SUB);

    while(1)
    {
	SoftKeyEvent ev;

    	Z80Exec(z80);

	while(SK_GetEvent(&ev))
	{
	    switch(ev.key)
	    {
	    	case SK_ABOUT:
	    	case SK_CONFIG:
		    switch(GUI_Menu(main_menu))
		    {
    			case MenuReset:
			    SPECReset(z80);
			    break;

    			case MenuSelectTape:
			    break;

    			case MenuStickyOn:
			    break;

    			case MenuStickyOff:
			    break;

    			case MenuDefineJoystick:
			    break;
		    }

		    SK_DisplayKeyboard(BG_GFX_SUB);
		    break;

	    	default:
		    SPECHandleKey(ev.key,ev.pressed);
		    break;
	    }
	}

	{
	static int pressed=0;
	SPECHandleKey(SK_P,pressed);
	pressed=!pressed;
	}
    }
}