/***************************************************************************

    file                 : loadingscreen.cpp
    created              : Sun Feb 25 00:34:46 /etc/localtime 2001
    copyright            : (C) 2000 by Eric Espie
    email                : eric.espie@torcs.org
    version              : $Id: loadingscreen.cpp,v 1.2 2003/06/24 21:02:24 torcs Exp $

 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/

/** @file
    		This is a Loading... screen management.
    @ingroup	racemantools		
    @author	<a href=mailto:eric.espie@torcs.org>Eric Espie</a>
    @version	$Id: loadingscreen.cpp,v 1.2 2003/06/24 21:02:24 torcs Exp $
*/

#include <string.h>
#include <stdlib.h>
#ifdef WIN32
#include <windows.h>
#endif
#include <tgfclient.h>
#include <car.h>

static void		*menuHandle = NULL;
#define			TEXTLINES	23
static int		rmTextId[TEXTLINES];
static char		*rmTextLines[TEXTLINES] = {0};
static int		rmCurText;

float	black[4] = {0.0, 0.0, 0.0, 0.0};
float	white[TEXTLINES][4];



static void
rmDeativate(void * /* dummy */)
{
}


/** 
    @ingroup	racemantools
    @param	title	Screen title.
    @param	bgimg	Optionnal backgrounf image (0 for no img).
    @return	None.
*/
void
RmLoadingScreenStart(char *title, char *bgimg)
{
    int		i;
    int		y;

    if (GfuiScreenIsActive(menuHandle)) {
	/* Already active */
	return;
    }
    
    if (menuHandle) {
	GfuiScreenRelease(menuHandle);
    }
    menuHandle = GfuiScreenCreateEx(black, NULL, NULL, NULL, rmDeativate, 0);

    GfuiTitleCreate(menuHandle, title, strlen(title));

    /* create 20 lines of text */
    for (i = 0, y = 400; i < TEXTLINES; i++, y -= 16) {
	white[i][0] = white[i][1] = white[i][2] = 1.0;
	white[i][3] = (float)i * 0.0421 + 0.2;
	rmTextId[i] = GfuiLabelCreateEx(menuHandle, "", white[i], GFUI_FONT_MEDIUM_C, 60, y, 
					GFUI_ALIGN_HL_VB, 100);
	if (rmTextLines[i]) {
	    /* free old text */
	    free(rmTextLines[i]);
	    rmTextLines[i] = NULL;
	}
    }

    rmCurText = 0;
    
    if (bgimg) {
	GfuiScreenAddBgImg(menuHandle, bgimg);
    }

    GfuiScreenActivate(menuHandle);
    GfuiDisplay();
}

void
RmShutdownLoadingScreen(void)
{
    if (menuHandle) {
	GfuiScreenRelease(menuHandle);
	menuHandle = 0;
    }
}


/** 
    @ingroup	racemantools
    @param	text	Text to display.
    @return	None.
*/
void
RmLoadingScreenSetText(char *text)
{
    int		i, j;
    
    GfOut("%s\n", text);
    
    if (menuHandle) {
	if (rmTextLines[rmCurText]) {
	    free(rmTextLines[rmCurText]);
	}
	if (text) {
	    rmTextLines[rmCurText] = strdup(text);
	    rmCurText = (rmCurText + 1) % TEXTLINES;
	}
	
	i = rmCurText;
	j = 0;
	do {
	    if (rmTextLines[i]) {
		GfuiLabelSetText(menuHandle, rmTextId[j], rmTextLines[i]);
	    }
	    j++;
	    i = (i + 1) % TEXTLINES;
	} while (i != rmCurText);
	
	GfuiDisplay();
    }
}