console.c

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/*
Copyright (C) 1997-2001 Id Software, Inc.
Copyright (C) 2018-2019 Krzysztof Kondrak
 
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.
 
*/
// console.c
 
#include "client.h"
 
console_t   con;
 
cvar_t      *con_notifytime;
extern cvar_t   *vid_hudscale;
 
 
#define     MAXCMDLINE  256
extern  char    key_lines[128][MAXCMDLINE];
extern  int     edit_line;
extern  int     key_linepos;
 
void DrawString (int x, int y, char *s)
{
    while (*s)
    {
        re.DrawChar (x, y, *s);
        x+=8*vid_hudscale->value;
        s++;
    }
}
 
void DrawAltString (int x, int y, char *s)
{
    while (*s)
    {
        re.DrawChar (x, y, *s ^ 0x80);
        x+=8*vid_hudscale->value;
        s++;
    }
}
 
 
void Key_ClearTyping (void)
{
    key_lines[edit_line][1] = 0;    // clear any typing
    key_linepos = 1;
}
 
/*
================
Con_ToggleConsole_f
================
*/
void Con_ToggleConsole_f (void)
{
    SCR_EndLoadingPlaque ();    // get rid of loading plaque
 
    if (cl.attractloop)
    {
        Cbuf_AddText ("killserver\n");
        return;
    }
 
    if (cls.state == ca_disconnected)
    {   // start the demo loop again
        Cbuf_AddText ("d1\n");
        return;
    }
 
    Key_ClearTyping ();
    Con_ClearNotify ();
 
    if (cls.key_dest == key_console)
    {
        M_ForceMenuOff ();
        Cvar_Set ("paused", "0");
    }
    else
    {
        M_ForceMenuOff ();
        cls.key_dest = key_console; 
 
        if (Cvar_VariableValue ("maxclients") == 1 
            && Com_ServerState ())
            Cvar_Set ("paused", "1");
    }
}
 
/*
================
Con_ToggleChat_f
================
*/
void Con_ToggleChat_f (void)
{
    Key_ClearTyping ();
 
    if (cls.key_dest == key_console)
    {
        if (cls.state == ca_active)
        {
            M_ForceMenuOff ();
            cls.key_dest = key_game;
        }
    }
    else
        cls.key_dest = key_console;
    
    Con_ClearNotify ();
}
 
/*
================
Con_Clear_f
================
*/
void Con_Clear_f (void)
{
    memset (con.text, ' ', CON_TEXTSIZE);
}
 
                        
/*
================
Con_Dump_f
 
Save the console contents out to a file
================
*/
void Con_Dump_f (void)
{
    int     l, x;
    char    *line;
    FILE    *f;
    char    buffer[1024];
    char    name[MAX_OSPATH];
 
    if (Cmd_Argc() != 2)
    {
        Com_Printf ("usage: condump <filename>\n");
        return;
    }
 
    Com_sprintf (name, sizeof(name), "%s/%s.txt", FS_Gamedir(), Cmd_Argv(1));
 
    Com_Printf ("Dumped console text to %s.\n", name);
    FS_CreatePath (name);
    f = fopen (name, "w");
    if (!f)
    {
        Com_Printf ("ERROR: couldn't open.\n");
        return;
    }
 
    // skip empty lines
    for (l = con.current - con.totallines + 1 ; l <= con.current ; l++)
    {
        line = con.text + (l%con.totallines)*con.linewidth;
        for (x=0 ; x<con.linewidth ; x++)
            if (line[x] != ' ')
                break;
        if (x != con.linewidth)
            break;
    }
 
    // write the remaining lines
    buffer[con.linewidth] = 0;
    for ( ; l <= con.current ; l++)
    {
        line = con.text + (l%con.totallines)*con.linewidth;
        strncpy (buffer, line, con.linewidth);
        for (x=con.linewidth-1 ; x>=0 ; x--)
        {
            if (buffer[x] == ' ')
                buffer[x] = 0;
            else
                break;
        }
        for (x=0; buffer[x]; x++)
            buffer[x] &= 0x7f;
 
        fprintf (f, "%s\n", buffer);
    }
 
    fclose (f);
}
 
                        
/*
================
Con_ClearNotify
================
*/
void Con_ClearNotify (void)
{
    int     i;
    
    for (i=0 ; i<NUM_CON_TIMES ; i++)
        con.times[i] = 0;
}
 
                        
/*
================
Con_MessageMode_f
================
*/
void Con_MessageMode_f (void)
{
    chat_team = false;
    cls.key_dest = key_message;
}
 
/*
================
Con_MessageMode2_f
================
*/
void Con_MessageMode2_f (void)
{
    chat_team = true;
    cls.key_dest = key_message;
}
 
/*
================
Con_CheckResize
 
If the line width has changed, reformat the buffer.
================
*/
void Con_CheckResize (void)
{
    int     i, j, width, oldwidth, oldtotallines, numlines, numchars;
    char    tbuf[CON_TEXTSIZE];
 
    width = (viddef.width >> 3) - 2;
 
    if (width == con.linewidth)
        return;
 
    if (width < 1)          // video hasn't been initialized yet
    {
        width = 38;
        con.linewidth = width;
        con.totallines = CON_TEXTSIZE / con.linewidth;
        memset (con.text, ' ', CON_TEXTSIZE);
    }
    else
    {
        oldwidth = con.linewidth;
        con.linewidth = width;
        oldtotallines = con.totallines;
        con.totallines = CON_TEXTSIZE / con.linewidth;
        numlines = oldtotallines;
 
        if (con.totallines < numlines)
            numlines = con.totallines;
 
        numchars = oldwidth;
    
        if (con.linewidth < numchars)
            numchars = con.linewidth;
 
        memcpy (tbuf, con.text, CON_TEXTSIZE);
        memset (con.text, ' ', CON_TEXTSIZE);
 
        for (i=0 ; i<numlines ; i++)
        {
            for (j=0 ; j<numchars ; j++)
            {
                con.text[(con.totallines - 1 - i) * con.linewidth + j] =
                        tbuf[((con.current - i + oldtotallines) %
                              oldtotallines) * oldwidth + j];
            }
        }
 
        Con_ClearNotify ();
    }
 
    con.current = con.totallines - 1;
    con.display = con.current;
}
 
 
/*
================
Con_Init
================
*/
void Con_Init (void)
{
    con.linewidth = -1;
 
    Con_CheckResize ();
    
    Com_Printf ("Console initialized.\n");
 
//
// register our commands
//
    con_notifytime = Cvar_Get ("con_notifytime", "3", 0);
 
    Cmd_AddCommand ("toggleconsole", Con_ToggleConsole_f);
    Cmd_AddCommand ("togglechat", Con_ToggleChat_f);
    Cmd_AddCommand ("messagemode", Con_MessageMode_f);
    Cmd_AddCommand ("messagemode2", Con_MessageMode2_f);
    Cmd_AddCommand ("clear", Con_Clear_f);
    Cmd_AddCommand ("condump", Con_Dump_f);
    con.initialized = true;
}
 
 
/*
===============
Con_Linefeed
===============
*/
void Con_Linefeed (void)
{
    con.x = 0;
    if (con.display == con.current)
        con.display++;
    con.current++;
    memset (&con.text[(con.current%con.totallines)*con.linewidth]
    , ' ', con.linewidth);
}
 
/*
================
Con_Print
 
Handles cursor positioning, line wrapping, etc
All console printing must go through this in order to be logged to disk
If no console is visible, the text will appear at the top of the game window
================
*/
void Con_Print (char *txt)
{
    int     y;
    int     c, l;
    static int  cr;
    int     mask;
 
    if (!con.initialized)
        return;
 
    if (txt[0] == 1 || txt[0] == 2)
    {
        mask = 128;     // go to colored text
        txt++;
    }
    else
        mask = 0;
 
 
    while ( (c = *txt) )
    {
    // 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.x = 0;
 
        txt++;
 
        if (cr)
        {
            con.current--;
            cr = false;
        }
 
        
        if (!con.x)
        {
            Con_Linefeed ();
        // mark time for transparent overlay
            if (con.current >= 0)
                con.times[con.current % NUM_CON_TIMES] = cls.realtime;
        }
 
        switch (c)
        {
        case '\n':
            con.x = 0;
            break;
 
        case '\r':
            con.x = 0;
            cr = 1;
            break;
 
        default:    // display character and advance
            y = con.current % con.totallines;
            con.text[y*con.linewidth+con.x] = c | mask | con.ormask;
            con.x++;
            if (con.x >= con.linewidth)
                con.x = 0;
            break;
        }
        
    }
}
 
 
/*
==============
Con_CenteredPrint
==============
*/
void Con_CenteredPrint (char *text)
{
    int     l;
    char    buffer[1024];
 
    l = (int)strlen(text);
    l = (con.linewidth-l)/2;
    if (l < 0)
        l = 0;
    memset (buffer, ' ', l);
    strcpy (buffer+l, text);
    strcat (buffer, "\n");
    Con_Print (buffer);
}
 
/*
==============================================================================
 
DRAWING
 
==============================================================================
*/
 
 
/*
================
Con_DrawInput
 
The input line scrolls horizontally if typing goes beyond the right edge
================
*/
void Con_DrawInput (void)
{
    int     y;
    int     i;
    char    *text;
 
    if (cls.key_dest == key_menu)
        return;
    if (cls.key_dest != key_console && cls.state == ca_active)
        return;     // don't draw anything (always draw if not active)
 
    text = key_lines[edit_line];
    
// add the cursor frame
    text[key_linepos] = 10+((int)(cls.realtime>>8)&1);
    
// fill out remainder with spaces
    for (i=key_linepos+1 ; i< con.linewidth ; i++)
        text[i] = ' ';
        
//  prestep if horizontally scrolling
    if (key_linepos >= con.linewidth)
        text += 1 + key_linepos - con.linewidth;
        
// draw it
    y = con.vislines-16;
 
    for (i=0 ; i<con.linewidth ; i++)
        re.DrawChar ( ((i+1)<<3)*vid_hudscale->value, con.vislines - 22*vid_hudscale->value, text[i]);
 
// remove cursor
    key_lines[edit_line][key_linepos] = 0;
}
 
 
/*
================
Con_DrawNotify
 
Draws the last few lines of output transparently over the game top
================
*/
void Con_DrawNotify (void)
{
    int     x, v;
    char    *text;
    int     i;
    int     time;
    char    *s;
    int     skip;
 
    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;
        
        for (x = 0 ; x < con.linewidth ; x++)
            re.DrawChar ( ((x+1)<<3)*vid_hudscale->value, v*vid_hudscale->value, text[x]);
 
        v += 8;
    }
 
 
    if (cls.key_dest == key_message)
    {
        if (chat_team)
        {
            DrawString (8, v*vid_hudscale->value, "say_team:");
            skip = 11;
        }
        else
        {
            DrawString (8, v*vid_hudscale->value, "say:");
            skip = 5;
        }
 
        s = chat_buffer;
        if (chat_bufferlen > (viddef.width>>3)-(skip+1))
            s += chat_bufferlen - ((viddef.width>>3)-(skip+1));
        x = 0;
        while(s[x])
        {
            re.DrawChar ( ((x+skip)<<3)*vid_hudscale->value, v*vid_hudscale->value, s[x]);
            x++;
        }
        re.DrawChar ( ((x+skip)<<3)*vid_hudscale->value, v*vid_hudscale->value, 10+((cls.realtime>>8)&1));
        v += 8;
    }
    
    if (v)
    {
        SCR_AddDirtyPoint (0,0);
        SCR_AddDirtyPoint (viddef.width-1, v*vid_hudscale->value);
    }
}
 
/*
================
Con_DrawConsole
 
Draws the console with the solid background
================
*/
void Con_DrawConsole (float frac)
{
    int             i, j, x, y, n;
    int             rows;
    char            *text;
    int             row;
    int             lines;
    char            version[64];
    char            dlbar[1024];
 
    lines = viddef.height * frac;
    if (lines <= 0)
        return;
 
    if (lines > viddef.height)
        lines = viddef.height;
 
// draw the background
    re.DrawStretchPic (0, lines-viddef.height, viddef.width, viddef.height, "conback");
    SCR_AddDirtyPoint (0,0);
    SCR_AddDirtyPoint (viddef.width-1,lines-1);
 
    Com_sprintf (version, sizeof(version), "v%4.2f", VERSION);
 
    for (x=0 ; x<5 ; x++)
        re.DrawChar (viddef.width-44*vid_hudscale->value+x*8*vid_hudscale->value, lines-12*vid_hudscale->value, 128 + version[x] );
 
// draw the text
    con.vislines = lines;
 
    rows = (lines-22)>>3;       // rows of text to draw
    y = (lines - 30 * vid_hudscale->value)/vid_hudscale->value;
 
// draw from the bottom up
    if (con.display != con.current)
    {
    // draw arrows to show the buffer is backscrolled
        for (x=0 ; x<con.linewidth ; x+=4)
            re.DrawChar ( ((x+1)<<3)*vid_hudscale->value, y*vid_hudscale->value, '^');
    
        y -= 8;
        rows--;
    }
    
    row = con.display;
    for (i=0 ; i<rows ; i++, y-=8, row--)
    {
        if (row < 0)
            break;
        if (con.current - row >= con.totallines)
            break;      // past scrollback wrap point
            
        text = con.text + (row % con.totallines)*con.linewidth;
 
        for (x=0 ; x<con.linewidth ; x++)
            re.DrawChar ( ((x+1)<<3)*vid_hudscale->value, y*vid_hudscale->value, text[x]);
    }
 
//ZOID
    // draw the download bar
    // figure out width
    if (cls.download) {
        if ((text = strrchr(cls.downloadname, '/')) != NULL)
            text++;
        else
            text = cls.downloadname;
 
        x = con.linewidth - ((con.linewidth * 7) / 40);
        y = (x - (int)strlen(text) - 8) / vid_hudscale->value;
        i = con.linewidth/3;
        if (strlen(text) > i) {
            y = x - i - 11;
            strncpy(dlbar, text, i);
            dlbar[i] = 0;
            strcat(dlbar, "...");
        } else
            strcpy(dlbar, text);
        strcat(dlbar, ": ");
        i = (int)strlen(dlbar);
        dlbar[i++] = '\x80';
        // where's the dot go?
        if (cls.downloadpercent == 0)
            n = 0;
        else
            n = y * cls.downloadpercent / 100;
            
        for (j = 0; j < y; j++)
            if (j == n)
                dlbar[i++] = '\x83';
            else
                dlbar[i++] = '\x81';
        dlbar[i++] = '\x82';
        dlbar[i] = 0;
 
        sprintf(dlbar + strlen(dlbar), " %02d%%", cls.downloadpercent);
 
        // draw it
        y = con.vislines-12*vid_hudscale->value;
        for (i = 0; i < strlen(dlbar); i++)
            re.DrawChar ( ((i+1)<<3)*vid_hudscale->value, y, dlbar[i]);
    }
//ZOID
 
// draw the input prompt, user text, and cursor if desired
    Con_DrawInput ();
}