shithub: qk1

ref: f64250f9c3b1376064cd214c36064044c98b117e
dir: /screen.c/

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#include "quakedef.h"

float scr_con_current;
static float scr_conlines; // lines of console to display

static float oldscreensize, oldfov;
cvar_t scr_viewsize = {"viewsize","100", true};

static cvar_t scr_fov = {"fov","90",true}; // 10 - 170
static cvar_t scr_conspeed = {"scr_conspeed","300",true};
static cvar_t scr_centertime = {"scr_centertime","2"};
static cvar_t scr_showram = {"showram","1"};
static cvar_t scr_showturtle = {"showturtle","0"};
static cvar_t scr_showpause = {"showpause","1"};
static cvar_t scr_printspeed = {"scr_printspeed","8"};
static cvar_t scr_showfps = {"showfps","0", true};

static bool scr_initialized; // ready to draw

static qpic_t *scr_net, *scr_turtle;

int scr_fullupdate;

static int clearconsole;
int clearnotify;

viddef_t vid; // global video state

vrect_t scr_vrect;

bool scr_disabled_for_loading;
static bool scr_drawloading;
static float scr_disabled_time;

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

CENTER PRINTING

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

float scr_centertime_off;
static char scr_centerstring[1024];
static float scr_centertime_start; // for slow victory printing
static int scr_center_lines;
static int scr_erase_lines;
static int scr_erase_center;

/*
==============
SCR_CenterPrint

Called for important messages that should stay in the center of the screen
for a few moments
==============
*/
void SCR_CenterPrint (char *str)
{
	strncpy (scr_centerstring, str, sizeof(scr_centerstring)-1);
	scr_centertime_off = scr_centertime.value;
	scr_centertime_start = cl.time;

	// count the number of lines for centering
	scr_center_lines = 1;
	while (*str)
	{
		if (*str == '\n')
			scr_center_lines++;
		str++;
	}
}

static void SCR_EraseCenterString (void)
{
	int		y;

	if (scr_erase_center++ > vid.numpages)
	{
		scr_erase_lines = 0;
		return;
	}

	if (scr_center_lines <= 4)
		y = vid.height*0.35;
	else
		y = 48;

	Draw_TileClear (0, y,vid.width, 8*scr_erase_lines);
}

static void SCR_DrawCenterString (void)
{
	char	*start;
	int		l;
	int		j;
	int		x, y;
	int		remaining;

	// the finale prints the characters one at a time
	if (cl.intermission)
		remaining = scr_printspeed.value * (cl.time - scr_centertime_start);
	else
		remaining = Q_MAXINT;

	scr_erase_center = 0;
	start = scr_centerstring;

	if (scr_center_lines <= 4)
		y = vid.height*0.35;
	else
		y = 48;

	do
	{
		// scan the width of the line
		for (l=0 ; l<40 ; l++)
			if (start[l] == '\n' || !start[l])
				break;
		x = (vid.width - l*8)/2;
		for (j=0 ; j<l ; j++, x+=8)
		{
			Draw_Character (x, y, start[j]);
			if (!remaining--)
				return;
		}

		y += 8;

		while (*start && *start != '\n')
			start++;

		if (!*start)
			break;
		start++;		// skip the \n
	} while (1);
}

static void SCR_CheckDrawCenterString (void)
{
	if (scr_center_lines > scr_erase_lines)
		scr_erase_lines = scr_center_lines;

	scr_centertime_off -= host_frametime;

	if (scr_centertime_off <= 0 && !cl.intermission)
		return;
	if (key_dest != key_game)
		return;

	SCR_DrawCenterString ();
}

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

static float
CalcFov(float fov, float a, float b)
{
	float v;

	fov = clamp(fov, 1, 179);
	v = a / tanf(fov / 360 * M_PI);

	return atanf(b / v) * 360.0 / M_PI;
}

/*
=================
SCR_CalcRefdef

Must be called whenever vid changes
Internal use only
=================
*/
static void SCR_CalcRefdef (void)
{
	vrect_t		vrect;
	float		size;

	scr_fullupdate = 0;		// force a background redraw
	vid.recalc_refdef = false;

	// force the status bar to redraw
	Sbar_Changed ();

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

	// bound viewsize
	if (scr_viewsize.value < 100)
		setcvar ("viewsize","100");
	if (scr_viewsize.value > 120)
		setcvar ("viewsize","120");

	// bound field of view
	if (scr_fov.value < 10)
		setcvar ("fov","10");
	if (scr_fov.value > 170)
		setcvar ("fov","170");

	r_refdef.fov_y = CalcFov(scr_fov.value, 640, 432); // 480→432 adjusted for a status bar
	r_refdef.fov_x = CalcFov(r_refdef.fov_y, r_refdef.vrect.height, r_refdef.vrect.width);

	scr_vrect = r_refdef.vrect;

	// intermission is always full screen
	if (cl.intermission)
		size = 120;
	else
		size = scr_viewsize.value;

	if (size >= 120)
		sb_lines = 0;		// no status bar at all
	else if (size >= 110)
		sb_lines = 24;		// no inventory
	else
		sb_lines = 24+16+8;

	// these calculations mirror those in R_Init() for r_refdef, but take no
	// account of water warping
	vrect.x = 0;
	vrect.y = 0;
	vrect.width = vid.width;
	vrect.height = vid.height;

	R_SetVrect (&vrect, &scr_vrect, sb_lines);

	// guard against going from one mode to another that's less than half the
	// vertical resolution
	if (scr_con_current > vid.height)
		scr_con_current = vid.height;

	// notify the refresh of the change
	R_ViewChanged (&vrect, sb_lines, vid.aspect);
}


/*
=================
SCR_SizeUp_f

Keybinding command
=================
*/
static void SCR_SizeUp_f (void)
{
	setcvarv ("viewsize",scr_viewsize.value+10);
	vid.recalc_refdef = true;
}


/*
=================
SCR_SizeDown_f

Keybinding command
=================
*/
static void SCR_SizeDown_f (void)
{
	setcvarv ("viewsize",scr_viewsize.value-10);
	vid.recalc_refdef = true;
}

void SCR_Init (void)
{
	Cvar_RegisterVariable (&scr_fov);
	Cvar_RegisterVariable (&scr_viewsize);
	Cvar_RegisterVariable (&scr_conspeed);
	Cvar_RegisterVariable (&scr_showram);
	Cvar_RegisterVariable (&scr_showturtle);
	Cvar_RegisterVariable (&scr_showpause);
	Cvar_RegisterVariable (&scr_centertime);
	Cvar_RegisterVariable (&scr_printspeed);
	Cvar_RegisterVariable(&scr_showfps);
	Cmd_AddCommand ("sizeup",SCR_SizeUp_f);
	Cmd_AddCommand ("sizedown",SCR_SizeDown_f);

	scr_net = Draw_PicFromWad ("net");
	scr_turtle = Draw_PicFromWad ("turtle");

	scr_initialized = true;
}

/*
==============
SCR_DrawTurtle
==============
*/
static void SCR_DrawTurtle (void)
{
	static int	count;

	if (!scr_showturtle.value)
		return;

	if (host_frametime < 0.1)
	{
		count = 0;
		return;
	}

	count++;
	if (count < 3)
		return;

	Draw_Pic (scr_vrect.x, scr_vrect.y, scr_turtle);
}

static void SCR_DrawFPS (void)
{
	static uvlong lastframetime;
	static int lastcnt, fps;
	uvlong t;
	int n;
	char s[16];

	if(!scr_showfps.value)
		return;
	t = nanosec();
	if((t - lastframetime) >= 1000000000ULL){
		fps = host_framecount - lastcnt;
		lastcnt = host_framecount;
		lastframetime = t;
	}
	n = snprint(s, sizeof(s), "%d", fps);
	Draw_String(vid.width - n*8, 0, s);
}

/*
==============
SCR_DrawNet
==============
*/
static void SCR_DrawNet (void)
{
	if (realtime - cl.last_received_message < 0.3)
		return;
	if (cls.demoplayback)
		return;

	Draw_Pic (scr_vrect.x+64, scr_vrect.y, scr_net);
}

/*
==============
DrawPause
==============
*/
static void SCR_DrawPause (void)
{
	qpic_t	*pic;

	if (!scr_showpause.value)		// turn off for screenshots
		return;

	if (!cl.paused)
		return;

	pic = Draw_CachePic ("gfx/pause.lmp");
	Draw_Pic ( (vid.width - pic->width)/2,
		(vid.height - 48 - pic->height)/2, pic);
}



/*
==============
SCR_DrawLoading
==============
*/
static void SCR_DrawLoading (void)
{
	qpic_t	*pic;

	if (!scr_drawloading)
		return;

	pic = Draw_CachePic ("gfx/loading.lmp");
	Draw_Pic ( (vid.width - pic->width)/2,
		(vid.height - 48 - pic->height)/2, pic);
}



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


/*
==================
SCR_SetUpToDrawConsole
==================
*/
static void SCR_SetUpToDrawConsole (void)
{
	Con_CheckResize ();

	if (scr_drawloading)
		return;		// never a console with loading plaque

	// decide on the height of the console
	con_forcedup = !cl.worldmodel || cls.signon != SIGNONS;

	if (con_forcedup)
	{
		scr_conlines = vid.height;		// full screen
		scr_con_current = scr_conlines;
	}
	else if (key_dest == key_console)
		scr_conlines = vid.height/2;	// half screen
	else
		scr_conlines = 0;				// none visible

	if (scr_conlines < scr_con_current)
	{
		scr_con_current -= scr_conspeed.value*host_frametime;
		if (scr_conlines > scr_con_current)
			scr_con_current = scr_conlines;

	}
	else if (scr_conlines > scr_con_current)
	{
		scr_con_current += scr_conspeed.value*host_frametime;
		if (scr_conlines < scr_con_current)
			scr_con_current = scr_conlines;
	}

	if (clearconsole++ < vid.numpages)
	{
		Draw_TileClear (0,(int)scr_con_current,vid.width, vid.height - (int)scr_con_current);
		Sbar_Changed ();
	}
	else if (clearnotify++ < vid.numpages)
	{
		Draw_TileClear (0,0,vid.width, con_notifylines);
	}
	else
		con_notifylines = 0;
}

/*
==================
SCR_DrawConsole
==================
*/
static void SCR_DrawConsole (void)
{
	if (scr_con_current)
	{
		Con_DrawConsole (scr_con_current, true);
		clearconsole = 0;
	}
	else
	{
		if (key_dest == key_game || key_dest == key_message)
			Con_DrawNotify ();	// only draw notify in game
	}
}

/*
===============
SCR_BeginLoadingPlaque

================
*/
void SCR_BeginLoadingPlaque (void)
{
	stopallsfx();

	if (cls.state != ca_connected)
		return;
	if (cls.signon != SIGNONS)
		return;

	// redraw with no console and the loading plaque
	Con_ClearNotify ();
	scr_centertime_off = 0;
	scr_con_current = 0;

	scr_drawloading = true;
	scr_fullupdate = 0;
	Sbar_Changed ();
	SCR_UpdateScreen(false);
	scr_drawloading = false;

	scr_disabled_for_loading = true;
	scr_disabled_time = realtime;
	scr_fullupdate = 0;
}

/*
===============
SCR_EndLoadingPlaque

================
*/
void SCR_EndLoadingPlaque (void)
{
	scr_disabled_for_loading = false;
	scr_fullupdate = 0;
	Con_ClearNotify ();
}

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

static char *scr_notifystring;

static void SCR_DrawNotifyString (void)
{
	char	*start;
	int		l;
	int		j;
	int		x, y;

	start = scr_notifystring;

	y = vid.height*0.35;

	do
	{
		// scan the width of the line
		for (l=0 ; l<40 ; l++)
			if (start[l] == '\n' || !start[l])
				break;
		x = (vid.width - l*8)/2;
		for (j=0 ; j<l ; j++, x+=8)
			Draw_Character (x, y, start[j]);

		y += 8;

		while (*start && *start != '\n')
			start++;

		if (!*start)
			break;
		start++;		// skip the \n
	} while (1);
}

/*
==================
SCR_ModalMessage

Displays a text string in the center of the screen and waits for a Y or N
keypress.
==================
*/
int SCR_ModalMessage (char *text)
{
	if (cls.state == ca_dedicated)
		return true;

	scr_notifystring = text;

	// draw a fresh screen
	scr_fullupdate = 0;
	SCR_UpdateScreen (true);
	do
	{
		key_count = -1;		// wait for a key down and up
		Sys_SendKeyEvents ();
	} while (key_lastpress != 'y' && key_lastpress != 'n' && key_lastpress != K_ESCAPE);

	scr_fullupdate = 0;
	SCR_UpdateScreen (false);

	return key_lastpress == 'y';
}


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

/*
===============
SCR_BringDownConsole

Brings the console down and fades the palettes back to normal
================
*/
void SCR_BringDownConsole (void)
{
	int		i;

	scr_centertime_off = 0;

	for (i=0 ; i<20 && scr_conlines != scr_con_current ; i++)
		SCR_UpdateScreen(false);

	cl.cshifts[0].percent = 0;		// no area contents palette on next frame
	setpal(host_basepal);
}


/*
==================
SCR_UpdateScreen

This is called every frame, and can also be called explicitly to flush
text to the screen.

WARNING: be very careful calling this from elsewhere, because the refresh
needs almost the entire 256k of stack space!
==================
*/
void SCR_UpdateScreen (bool drawdialog)
{
	static float oldlcd_x;

	if (scr_disabled_for_loading)
	{
		if (realtime - scr_disabled_time > 60)
		{
			scr_disabled_for_loading = false;
			Con_Printf ("load failed.\n");
		}
		else
			return;
	}

	if (cls.state == ca_dedicated)
		return;				// stdout only

	if (!scr_initialized || !con_initialized)
		return;				// not initialized yet

	// check for vid changes
	if (oldfov != scr_fov.value)
	{
		oldfov = scr_fov.value;
		vid.recalc_refdef = true;
	}

	if (oldlcd_x != lcd_x.value)
	{
		oldlcd_x = lcd_x.value;
		vid.recalc_refdef = true;
	}

	if (oldscreensize != scr_viewsize.value)
	{
		oldscreensize = scr_viewsize.value;
		vid.recalc_refdef = true;
	}

	if (vid.recalc_refdef)
	{
		// something changed, so reorder the screen
		SCR_CalcRefdef ();
	}

	// do 3D refresh drawing, and then update the screen
	if (scr_fullupdate++ < vid.numpages)
	{	// clear the entire screen
		Draw_TileClear (0,0,vid.width,vid.height);
		Sbar_Changed ();
	}
	SCR_SetUpToDrawConsole ();
	SCR_EraseCenterString ();
									//  for linear writes all the time

	V_RenderView ();

	if (drawdialog)
	{
		Sbar_Draw ();
		Draw_FadeScreen ();
		SCR_DrawNotifyString ();
	}
	else if (scr_drawloading)
	{
		SCR_DrawLoading ();
		Sbar_Draw ();
	}
	else if (cl.intermission == 1 && key_dest == key_game)
	{
		Sbar_IntermissionOverlay ();
	}
	else if (cl.intermission == 2 && key_dest == key_game)
	{
		Sbar_FinaleOverlay ();
		SCR_CheckDrawCenterString ();
	}
	else if (cl.intermission == 3 && key_dest == key_game)
	{
		SCR_CheckDrawCenterString ();
	}
	else
	{
		SCR_DrawNet ();
		SCR_DrawTurtle ();
		SCR_DrawPause ();
		SCR_CheckDrawCenterString ();
		Sbar_Draw ();
		SCR_DrawConsole ();
		M_Draw ();
	}
	SCR_DrawFPS();
	V_UpdatePalette ();

	flipfb();
}