hu_lib.c
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上传用户:xuyinpeng
上传日期:2021-05-12
资源大小:455k
文件大小:7k
源码类别:
射击游戏
开发平台:
Visual C++
- // Emacs style mode select -*- C++ -*-
- //-----------------------------------------------------------------------------
- //
- // $Id:$
- //
- // Copyright (C) 1993-1996 by id Software, Inc.
- //
- // This source is available for distribution and/or modification
- // only under the terms of the DOOM Source Code License as
- // published by id Software. All rights reserved.
- //
- // The source is distributed in the hope that it will be useful,
- // but WITHOUT ANY WARRANTY; without even the implied warranty of
- // FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
- // for more details.
- //
- // $Log:$
- //
- // DESCRIPTION: heads-up text and input code
- //
- //-----------------------------------------------------------------------------
- static const char
- rcsid[] = "$Id: hu_lib.c,v 1.3 1997/01/26 07:44:58 b1 Exp $";
- #include <ctype.h>
- #include "doomdef.h"
- #include "v_video.h"
- #include "m_swap.h"
- #include "hu_lib.h"
- #include "r_local.h"
- #include "r_draw.h"
- // boolean : whether the screen is always erased
- #define noterased viewwindowx
- extern boolean automapactive; // in AM_map.c
- void HUlib_init(void)
- {
- }
- void HUlib_clearTextLine(hu_textline_t* t)
- {
- t->len = 0;
- t->l[0] = 0;
- t->needsupdate = true;
- }
- void
- HUlib_initTextLine
- ( hu_textline_t* t,
- int x,
- int y,
- patch_t** f,
- int sc )
- {
- t->x = x;
- t->y = y;
- t->f = f;
- t->sc = sc;
- HUlib_clearTextLine(t);
- }
- boolean
- HUlib_addCharToTextLine
- ( hu_textline_t* t,
- char ch )
- {
- if (t->len == HU_MAXLINELENGTH)
- return false;
- else
- {
- t->l[t->len++] = ch;
- t->l[t->len] = 0;
- t->needsupdate = 4;
- return true;
- }
- }
- boolean HUlib_delCharFromTextLine(hu_textline_t* t)
- {
- if (!t->len) return false;
- else
- {
- t->l[--t->len] = 0;
- t->needsupdate = 4;
- return true;
- }
- }
- void
- HUlib_drawTextLine
- ( hu_textline_t* l,
- boolean drawcursor )
- {
- int i;
- int w;
- int x;
- unsigned char c;
- // draw the new stuff
- x = l->x;
- for (i=0;i<l->len;i++)
- {
- c = toupper(l->l[i]);
- if (c != ' '
- && c >= l->sc
- && c <= '_')
- {
- w = SHORT(l->f[c - l->sc]->width);
- if (x+w > SCREENWIDTH)
- break;
- V_DrawPatchDirect(x, l->y, FG, l->f[c - l->sc]);
- x += w;
- }
- else
- {
- x += 4;
- if (x >= SCREENWIDTH)
- break;
- }
- }
- // draw the cursor if requested
- if (drawcursor
- && x + SHORT(l->f['_' - l->sc]->width) <= SCREENWIDTH)
- {
- V_DrawPatchDirect(x, l->y, FG, l->f['_' - l->sc]);
- }
- }
- // sorta called by HU_Erase and just better darn get things straight
- void HUlib_eraseTextLine(hu_textline_t* l)
- {
- int lh;
- int y;
- int yoffset;
- static boolean lastautomapactive = true;
- // Only erases when NOT in automap and the screen is reduced,
- // and the text must either need updating or refreshing
- // (because of a recent change back from the automap)
- if (!automapactive &&
- viewwindowx && l->needsupdate)
- {
- lh = SHORT(l->f[0]->height) + 1;
- for (y=l->y,yoffset=y*SCREENWIDTH ; y<l->y+lh ; y++,yoffset+=SCREENWIDTH)
- {
- if (y < viewwindowy || y >= viewwindowy + viewheight)
- R_VideoErase(yoffset, SCREENWIDTH); // erase entire line
- else
- {
- R_VideoErase(yoffset, viewwindowx); // erase left border
- R_VideoErase(yoffset + viewwindowx + viewwidth, viewwindowx);
- // erase right border
- }
- }
- }
- lastautomapactive = automapactive;
- if (l->needsupdate) l->needsupdate--;
- }
- void
- HUlib_initSText
- ( hu_stext_t* s,
- int x,
- int y,
- int h,
- patch_t** font,
- int startchar,
- boolean* on )
- {
- int i;
- s->h = h;
- s->on = on;
- s->laston = true;
- s->cl = 0;
- for (i=0;i<h;i++)
- HUlib_initTextLine(&s->l[i],
- x, y - i*(SHORT(font[0]->height)+1),
- font, startchar);
- }
- void HUlib_addLineToSText(hu_stext_t* s)
- {
- int i;
- // add a clear line
- if (++s->cl == s->h)
- s->cl = 0;
- HUlib_clearTextLine(&s->l[s->cl]);
- // everything needs updating
- for (i=0 ; i<s->h ; i++)
- s->l[i].needsupdate = 4;
- }
- void
- HUlib_addMessageToSText
- ( hu_stext_t* s,
- char* prefix,
- char* msg )
- {
- HUlib_addLineToSText(s);
- if (prefix)
- while (*prefix)
- HUlib_addCharToTextLine(&s->l[s->cl], *(prefix++));
- while (*msg)
- HUlib_addCharToTextLine(&s->l[s->cl], *(msg++));
- }
- void HUlib_drawSText(hu_stext_t* s)
- {
- int i, idx;
- hu_textline_t *l;
- if (!*s->on)
- return; // if not on, don't draw
- // draw everything
- for (i=0 ; i<s->h ; i++)
- {
- idx = s->cl - i;
- if (idx < 0)
- idx += s->h; // handle queue of lines
- l = &s->l[idx];
- // need a decision made here on whether to skip the draw
- HUlib_drawTextLine(l, false); // no cursor, please
- }
- }
- void HUlib_eraseSText(hu_stext_t* s)
- {
- int i;
- for (i=0 ; i<s->h ; i++)
- {
- if (s->laston && !*s->on)
- s->l[i].needsupdate = 4;
- HUlib_eraseTextLine(&s->l[i]);
- }
- s->laston = *s->on;
- }
- void
- HUlib_initIText
- ( hu_itext_t* it,
- int x,
- int y,
- patch_t** font,
- int startchar,
- boolean* on )
- {
- it->lm = 0; // default left margin is start of text
- it->on = on;
- it->laston = true;
- HUlib_initTextLine(&it->l, x, y, font, startchar);
- }
- // The following deletion routines adhere to the left margin restriction
- void HUlib_delCharFromIText(hu_itext_t* it)
- {
- if (it->l.len != it->lm)
- HUlib_delCharFromTextLine(&it->l);
- }
- void HUlib_eraseLineFromIText(hu_itext_t* it)
- {
- while (it->lm != it->l.len)
- HUlib_delCharFromTextLine(&it->l);
- }
- // Resets left margin as well
- void HUlib_resetIText(hu_itext_t* it)
- {
- it->lm = 0;
- HUlib_clearTextLine(&it->l);
- }
- void
- HUlib_addPrefixToIText
- ( hu_itext_t* it,
- char* str )
- {
- while (*str)
- HUlib_addCharToTextLine(&it->l, *(str++));
- it->lm = it->l.len;
- }
- // wrapper function for handling general keyed input.
- // returns true if it ate the key
- boolean HUlib_keyInIText( hu_itext_t *it, unsigned char ch)
- {
- if (ch >= ' ' && ch <= '_')
- HUlib_addCharToTextLine(&it->l, (char) ch);
- else
- if (ch == KEY_BACKSPACE)
- HUlib_delCharFromIText(it);
- else
- if (ch != KEY_ENTER)
- return false; // did not eat key
- return true; // ate the key
- }
- void HUlib_drawIText(hu_itext_t* it)
- {
- hu_textline_t *l = &it->l;
- if (!*it->on)
- return;
- HUlib_drawTextLine(l, true); // draw the line w/ cursor
- }
- void HUlib_eraseIText(hu_itext_t* it)
- {
- if (it->laston && !*it->on)
- it->l.needsupdate = 4;
- HUlib_eraseTextLine(&it->l);
- it->laston = *it->on;
- }