cl_console.c

quakeIII源码这个不用我多说吧

		Con_CheckResize ();
		con.initialized = qtrue;
	}

	color = ColorIndex(COLOR_WHITE);

	while ( (c = *txt) != 0 ) {
		if ( Q_IsColorString( txt ) ) {
			color = ColorIndex( *(txt+1) );
			txt += 2;
			continue;
		}

		// count word length
		for (l=0 ; l< con.linewidth ; l++) {
			if ( txt[l] <= ' ') {
				break;
			}

		}

		// word wrap
		if (l != con.linewidth && (con.x + l >= con.linewidth) ) {
			Con_Linefeed(skipnotify);

		}

		txt++;

		switch (c)
		{
		case '\n':
			Con_Linefeed (skipnotify);
			break;
		case '\r':
			con.x = 0;
			break;
		default:	// display character and advance
			y = con.current % con.totallines;
			con.text[y*con.linewidth+con.x] = (color << 8) | c;
			con.x++;
			if (con.x >= con.linewidth) {
				Con_Linefeed(skipnotify);
				con.x = 0;
			}
			break;
		}
	}


	// mark time for transparent overlay
	if (con.current >= 0) {
		// NERVE - SMF
		if ( skipnotify ) {
			prev = con.current % NUM_CON_TIMES - 1;
			if ( prev < 0 )
				prev = NUM_CON_TIMES - 1;
			con.times[prev] = 0;
		}
		else
		// -NERVE - SMF
			con.times[con.current % NUM_CON_TIMES] = cls.realtime;
	}
}


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

DRAWING

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


/*
================
Con_DrawInput

Draw the editline after a ] prompt
================
*/
void Con_DrawInput (void) {
	int		y;

	if ( cls.state != CA_DISCONNECTED && !(cls.keyCatchers & KEYCATCH_CONSOLE ) ) {
		return;
	}

	y = con.vislines - ( SMALLCHAR_HEIGHT * 2 );

	re.SetColor( con.color );

	SCR_DrawSmallChar( con.xadjust + 1 * SMALLCHAR_WIDTH, y, ']' );

	Field_Draw( &g_consoleField, con.xadjust + 2 * SMALLCHAR_WIDTH, y,
		SCREEN_WIDTH - 3 * SMALLCHAR_WIDTH, qtrue );
}


/*
================
Con_DrawNotify

Draws the last few lines of output transparently over the game top
================
*/
void Con_DrawNotify (void)
{
	int		x, v;
	short	*text;
	int		i;
	int		time;
	int		skip;
	int		currentColor;

	currentColor = 7;
	re.SetColor( g_color_table[currentColor] );

	v = 0;
	for (i= con.current-NUM_CON_TIMES+1 ; i<=con.current ; i++)
	{
		if (i < 0)
			continue;
		time = con.times[i % NUM_CON_TIMES];
		if (time == 0)
			continue;
		time = cls.realtime - time;
		if (time > con_notifytime->value*1000)
			continue;
		text = con.text + (i % con.totallines)*con.linewidth;

		if (cl.snap.ps.pm_type != PM_INTERMISSION && cls.keyCatchers & (KEYCATCH_UI | KEYCATCH_CGAME) ) {
			continue;
		}

		for (x = 0 ; x < con.linewidth ; x++) {
			if ( ( text[x] & 0xff ) == ' ' ) {
				continue;
			}
			if ( ( (text[x]>>8)&7 ) != currentColor ) {
				currentColor = (text[x]>>8)&7;
				re.SetColor( g_color_table[currentColor] );
			}
			SCR_DrawSmallChar( cl_conXOffset->integer + con.xadjust + (x+1)*SMALLCHAR_WIDTH, v, text[x] & 0xff );
		}

		v += SMALLCHAR_HEIGHT;
	}

	re.SetColor( NULL );

	if (cls.keyCatchers & (KEYCATCH_UI | KEYCATCH_CGAME) ) {
		return;
	}

	// draw the chat line
	if ( cls.keyCatchers & KEYCATCH_MESSAGE )
	{
		if (chat_team)
		{
			SCR_DrawBigString (8, v, "say_team:", 1.0f );
			skip = 11;
		}
		else
		{
			SCR_DrawBigString (8, v, "say:", 1.0f );
			skip = 5;
		}

		Field_BigDraw( &chatField, skip * BIGCHAR_WIDTH, v,
			SCREEN_WIDTH - ( skip + 1 ) * BIGCHAR_WIDTH, qtrue );

		v += BIGCHAR_HEIGHT;
	}

}

/*
================
Con_DrawSolidConsole

Draws the console with the solid background
================
*/
void Con_DrawSolidConsole( float frac ) {
	int				i, x, y;
	int				rows;
	short			*text;
	int				row;
	int				lines;
//	qhandle_t		conShader;
	int				currentColor;
	vec4_t			color;

	lines = cls.glconfig.vidHeight * frac;
	if (lines <= 0)
		return;

	if (lines > cls.glconfig.vidHeight )
		lines = cls.glconfig.vidHeight;

	// on wide screens, we will center the text
	con.xadjust = 0;
	SCR_AdjustFrom640( &con.xadjust, NULL, NULL, NULL );

	// draw the background
	y = frac * SCREEN_HEIGHT - 2;
	if ( y < 1 ) {
		y = 0;
	}
	else {
		SCR_DrawPic( 0, 0, SCREEN_WIDTH, y, cls.consoleShader );
	}

	color[0] = 1;
	color[1] = 0;
	color[2] = 0;
	color[3] = 1;
	SCR_FillRect( 0, y, SCREEN_WIDTH, 2, color );


	// draw the version number

	re.SetColor( g_color_table[ColorIndex(COLOR_RED)] );

	i = strlen( Q3_VERSION );

	for (x=0 ; x<i ; x++) {

		SCR_DrawSmallChar( cls.glconfig.vidWidth - ( i - x ) * SMALLCHAR_WIDTH, 

			(lines-(SMALLCHAR_HEIGHT+SMALLCHAR_HEIGHT/2)), Q3_VERSION[x] );

	}


	// draw the text
	con.vislines = lines;
	rows = (lines-SMALLCHAR_WIDTH)/SMALLCHAR_WIDTH;		// rows of text to draw

	y = lines - (SMALLCHAR_HEIGHT*3);

	// draw from the bottom up
	if (con.display != con.current)
	{
	// draw arrows to show the buffer is backscrolled
		re.SetColor( g_color_table[ColorIndex(COLOR_RED)] );
		for (x=0 ; x<con.linewidth ; x+=4)
			SCR_DrawSmallChar( con.xadjust + (x+1)*SMALLCHAR_WIDTH, y, '^' );
		y -= SMALLCHAR_HEIGHT;
		rows--;
	}
	
	row = con.display;

	if ( con.x == 0 ) {
		row--;
	}

	currentColor = 7;
	re.SetColor( g_color_table[currentColor] );

	for (i=0 ; i<rows ; i++, y -= SMALLCHAR_HEIGHT, row--)
	{
		if (row < 0)
			break;
		if (con.current - row >= con.totallines) {
			// past scrollback wrap point
			continue;	
		}

		text = con.text + (row % con.totallines)*con.linewidth;

		for (x=0 ; x<con.linewidth ; x++) {
			if ( ( text[x] & 0xff ) == ' ' ) {
				continue;
			}

			if ( ( (text[x]>>8)&7 ) != currentColor ) {
				currentColor = (text[x]>>8)&7;
				re.SetColor( g_color_table[currentColor] );
			}
			SCR_DrawSmallChar(  con.xadjust + (x+1)*SMALLCHAR_WIDTH, y, text[x] & 0xff );
		}
	}

	// draw the input prompt, user text, and cursor if desired
	Con_DrawInput ();

	re.SetColor( NULL );
}



/*
==================
Con_DrawConsole
==================
*/
void Con_DrawConsole( void ) {
	// check for console width changes from a vid mode change
	Con_CheckResize ();

	// if disconnected, render console full screen
	if ( cls.state == CA_DISCONNECTED ) {
		if ( !( cls.keyCatchers & (KEYCATCH_UI | KEYCATCH_CGAME)) ) {
			Con_DrawSolidConsole( 1.0 );
			return;
		}
	}

	if ( con.displayFrac ) {
		Con_DrawSolidConsole( con.displayFrac );
	} else {
		// draw notify lines
		if ( cls.state == CA_ACTIVE ) {
			Con_DrawNotify ();
		}
	}
}

//================================================================

/*
==================
Con_RunConsole

Scroll it up or down
==================
*/
void Con_RunConsole (void) {
	// decide on the destination height of the console
	if ( cls.keyCatchers & KEYCATCH_CONSOLE )
		con.finalFrac = 0.5;		// half screen
	else
		con.finalFrac = 0;				// none visible
	
	// scroll towards the destination height
	if (con.finalFrac < con.displayFrac)
	{
		con.displayFrac -= con_conspeed->value*cls.realFrametime*0.001;
		if (con.finalFrac > con.displayFrac)
			con.displayFrac = con.finalFrac;

	}
	else if (con.finalFrac > con.displayFrac)
	{
		con.displayFrac += con_conspeed->value*cls.realFrametime*0.001;
		if (con.finalFrac < con.displayFrac)
			con.displayFrac = con.finalFrac;
	}

}


void Con_PageUp( void ) {
	con.display -= 2;
	if ( con.current - con.display >= con.totallines ) {
		con.display = con.current - con.totallines + 1;
	}
}

void Con_PageDown( void ) {
	con.display += 2;
	if (con.display > con.current) {
		con.display = con.current;
	}
}

void Con_Top( void ) {
	con.display = con.totallines;
	if ( con.current - con.display >= con.totallines ) {
		con.display = con.current - con.totallines + 1;
	}
}

void Con_Bottom( void ) {
	con.display = con.current;
}


void Con_Close( void ) {
	if ( !com_cl_running->integer ) {
		return;
	}
	Field_Clear( &g_consoleField );
	Con_ClearNotify ();
	cls.keyCatchers &= ~KEYCATCH_CONSOLE;
	con.finalFrac = 0;				// none visible
	con.displayFrac = 0;
}