bomberclone/src/chat.c

/* 
   chat.c - this file will do everything what have to do with the chat.. 
*/

#include "bomberclone.h"
#include "network.h"
#include "packets.h"
#include "gfx.h"
#include "keybinput.h"
#include "chat.h"

_chat chat;

/* find a free line or delete the oldest one */
int
chat_findfreeline ()
{
    int i;

    for (i = 0; (i < CHAT_MAX_LINES && chat.lines[i][0] != 0); i++);

    if (i >= CHAT_MAX_LINES) {
        memcpy (chat.lines[1], chat.lines[0], 255);
        i = 255;
    }

    chat.changed = 1;

    return i;
}

void
chat_addline (char *text)
{
    int l;

    l = chat_findfreeline ();

    strncpy (chat.lines[l], text, 255);
    chat.lineschanged = 1;
}

void
chat_drawbox ()
{
    SDL_Rect src;
    int i;

    if (chat.visible == 0)
        chat.oldscreen = gfx_copyscreen (&chat.window);

    chat.visible = 1;

    if (gfx_locksurface (gfx.screen))
        return;

    for (i = 0; i < 2; i++) {
        src.x = chat.window.x + i;
        src.w = src.x + chat.window.w - 2;
        src.y = chat.window.y + i;
        src.h = src.y + chat.window.h - 2;
        draw_shadefield (gfx.screen, &src, CHAT_BG_SHADE_BRIGHT);
    }

    gfx_unlocksurface (gfx.screen);

    src.x = chat.window.x + 2;
    src.y = chat.window.y + 2;
    src.w = src.x + chat.window.w - 4;
    src.h = src.y + chat.window.h - 4 - 16;
    draw_shadefield (gfx.screen, &src, CHAT_BG_SHADE_DARK);
    src.x = chat.window.x + 2;
    src.y = chat.window.y + chat.window.h - 18;
    src.w = src.x + chat.window.w - 4;
    src.h = src.y + 16;
    draw_shadefield (gfx.screen, &src, CHAT_BG_SHADE_DARK >> 1);
};


void
chat_deletebox ()
{
    SDL_Rect src,
      dest;

    src.x = 0;
    src.y = 0;
    src.w = dest.w = chat.oldscreen->w;
    src.h = dest.h = chat.oldscreen->h;

    dest.x = chat.window.x;
    dest.y = chat.window.y;

    SDL_BlitSurface (chat.oldscreen, &src, gfx.screen, &dest);
    gfx_AddUpdateRect (chat.window.x, chat.window.y, chat.window.w, chat.window.h);

    chat.visible = 0;
    SDL_FreeSurface (chat.oldscreen);
    chat.oldscreen = NULL;
};


void
chat_show (int x1, int y1, int x2, int y2)
{
    if (chat.visible != 0)
        chat_deletebox ();

    if (x1 == -1 || x2 == -1 || y1 == -1 || y2 == -1 || x2 <= x1 || y2 <= y1)
        chat.visible = 0;
    else {
        chat.window.x = x1;
        chat.window.y = y1;
        chat.window.w = x2 - x1;
        chat.window.h = y2 - y1;
        chat_drawbox ();
        keybinput_new (&chat.input);
        gfx_AddUpdateRect (chat.window.x, chat.window.y, chat.window.w, chat.window.h);
        chat.changed = 1;
		chat.lineschanged = 1;
    }
};


void
chat_clearscreen (signed char all)
{
    SDL_Rect src,
      dest;

    if (all == 1) {
        dest.x = chat.window.x + 2;
        dest.y = chat.window.y + 2;
        dest.w = dest.x + chat.window.w - 4;
        dest.h = dest.y + chat.window.h - 4;

        src.x = 2;
        src.y = 2;
        src.w = chat.window.w - 4;
        src.h = chat.window.h - 4;
    }
    else {
        /* redraw only the textline of out input box */
        dest.x = chat.window.x + 2;
        dest.y = chat.window.y + chat.window.h - 18;
        dest.w = src.w = chat.window.w - 4;
        dest.h = src.h = 16;

        src.x = 2;
        src.y = chat.window.h - 18;
    }
    SDL_BlitSurface (chat.oldscreen, &src, gfx.screen, &dest);

    if (all == 1) {
        dest.w = dest.x + chat.window.w - 4;
        dest.h = dest.y + chat.window.h - 4 - 16;
        draw_shadefield (gfx.screen, &dest, CHAT_BG_SHADE_DARK);
    }

    src.x = chat.window.x + 2;
    src.y = chat.window.y + chat.window.h - 18;
    src.w = src.x + chat.window.w - 4;
    src.h = src.y + 16;
    draw_shadefield (gfx.screen, &src, CHAT_BG_SHADE_DARK >> 1);

    gfx_AddUpdateRect (chat.window.x, chat.window.y, chat.window.w, chat.window.h);
};


void
chat_loop (SDL_Event * event)
{
    int i,
      y,
      l,
      p1,
      p2,
      maxchar;
    char text[255];

    i = keybinput_loop (&chat.input, event);

    if (i == 1 && chat.input.text[0] != 0) {
        sprintf (text, "%s: %s", bman.playername, chat.input.text);
        net_send_chat (text, 1);
        chat_addline (text);
        keybinput_new (&chat.input);
        i = 0;
    }

    if (((i == 0 && chat.input.changed == 1) || chat.changed == 1) && chat.visible == 1) {
        /* draw the new field */
        chat_clearscreen (chat.lineschanged);
        p1 = p2 = 0;
        maxchar = (chat.window.w - 4) / (gfx.font.size.x - 4);
        if (chat.lineschanged) {
            y = chat.window.y + 4;
            l = chat.startline;
            while (y < (chat.window.y + chat.window.h - 32) && chat.lines[l][0] != 0) {
                for (p1 = 0; (p1 < maxchar && chat.lines[l][p2] != 0); p1++)
                    text[p1] = chat.lines[l][p2++];
                text[p1] = 0;
                draw_text (chat.window.x + 4, y, text, 1);
                if (chat.lines[l][p2] == 0) { // the end of the line
                    l++;
                    p2 = 0;
                }
                y = y + gfx.font.size.y;
            }
            if (chat.lines[l][0] != 0) {
                chat.startline++;
                chat.changed = 1;
                chat.lineschanged = 1;
            }
            else {
                chat.changed = 0;
                chat.lineschanged = 0;
            }
        }
        if (chat.startline >= CHAT_MAX_LINES)
            chat.startline = CHAT_MAX_LINES - 5;

        /* draw the input line */
        if (chat.input.len > maxchar)
            p2 = chat.input.len - maxchar;

        for (p1 = 0; (p1 < maxchar && chat.input.text[p2] != 0); p1++)
            text[p1] = chat.input.text[p2++];
        text[p1] = 0;
        draw_text (chat.window.x + 4, (chat.window.y + chat.window.h) - 4 - gfx.font.size.y, text,
                   1);
    }
};