v4k-git-backup/demos/ports/doom/src/st_lib.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:
//        The status bar widget code.
//
//-----------------------------------------------------------------------------

#include "doom_config.h"



#include "doomdef.h"
#include "z_zone.h"
#include "v_video.h"
#include "m_swap.h"
#include "i_system.h"
#include "w_wad.h"
#include "st_stuff.h"
#include "st_lib.h"
#include "r_local.h"


// in AM_map.c
extern doom_boolean                automapactive;


//
// Hack display negative frags.
//  Loads and store the stminus lump.
//
patch_t* sttminus;


void STlib_init(void)
{
    sttminus = (patch_t*)W_CacheLumpName("STTMINUS", PU_STATIC);
}

// ?
void STlib_initNum(st_number_t* n, int x, int y, patch_t** pl, int* num, doom_boolean* on, int width)
{
    n->x = x;
    n->y = y;
    n->oldnum = 0;
    n->width = width;
    n->num = num;
    n->on = on;
    n->p = pl;
}

// 
// A fairly efficient way to draw a number
//  based on differences from the old number.
// Note: worth the trouble?
//
void STlib_drawNum(st_number_t* n, doom_boolean refresh)
{
    int numdigits = n->width;
    int num = *n->num;

    int w = SHORT(n->p[0]->width);
    int h = SHORT(n->p[0]->height);
    int x = n->x;

    int neg;

    n->oldnum = *n->num;

    neg = num < 0;

    if (neg)
    {
        if (numdigits == 2 && num < -9)
            num = -9;
        else if (numdigits == 3 && num < -99)
            num = -99;

        num = -num;
    }

    // clear the area
    x = n->x - numdigits * w;

    if (n->y - ST_Y < 0)
        I_Error("Error: drawNum: n->y - ST_Y < 0");

    V_CopyRect(x, n->y - ST_Y, STLIB_BG, w * numdigits, h, x, n->y, STLIB_FG);

    // if non-number, do not draw it
    if (num == 1994)
        return;

    x = n->x;

    // in the special case of 0, you draw 0
    if (!num)
        V_DrawPatch(x - w, n->y, STLIB_FG, n->p[0]);

    // draw the new number
    while (num && numdigits--)
    {
        x -= w;
        V_DrawPatch(x, n->y, STLIB_FG, n->p[num % 10]);
        num /= 10;
    }

    // draw a minus sign if necessary
    if (neg)
        V_DrawPatch(x - 8, n->y, STLIB_FG, sttminus);
}

//
void STlib_updateNum(st_number_t* n, doom_boolean refresh)
{
    if (*n->on) STlib_drawNum(n, refresh);
}

//
void STlib_initPercent(st_percent_t* p, int x, int y, patch_t** pl, int* num, doom_boolean* on, patch_t* percent)
{
    STlib_initNum(&p->n, x, y, pl, num, on, 3);
    p->p = percent;
}

void STlib_updatePercent(st_percent_t* per, int refresh)
{
    if (refresh && *per->n.on)
        V_DrawPatch(per->n.x, per->n.y, STLIB_FG, per->p);

    STlib_updateNum(&per->n, refresh);
}

void STlib_initMultIcon(st_multicon_t* i, int x, int y, patch_t** il, int* inum, doom_boolean* on)
{
    i->x = x;
    i->y = y;
    i->oldinum = -1;
    i->inum = inum;
    i->on = on;
    i->p = il;
}

void STlib_updateMultIcon(st_multicon_t* mi, doom_boolean refresh)
{
    int w;
    int h;
    int x;
    int y;

    if (*mi->on
        && (mi->oldinum != *mi->inum || refresh)
        && (*mi->inum != -1))
    {
        if (mi->oldinum != -1)
        {
            x = mi->x - SHORT(mi->p[mi->oldinum]->leftoffset);
            y = mi->y - SHORT(mi->p[mi->oldinum]->topoffset);
            w = SHORT(mi->p[mi->oldinum]->width);
            h = SHORT(mi->p[mi->oldinum]->height);

            if (y - ST_Y < 0)
                I_Error("Error: updateMultIcon: y - ST_Y < 0");

            V_CopyRect(x, y - ST_Y, STLIB_BG, w, h, x, y, STLIB_FG);
        }
        V_DrawPatch(mi->x, mi->y, STLIB_FG, mi->p[*mi->inum]);
        mi->oldinum = *mi->inum;
    }
}

void STlib_initBinIcon(st_binicon_t* b, int x, int y, patch_t* i, doom_boolean* val, doom_boolean* on)
{
    b->x = x;
    b->y = y;
    b->oldval = 0;
    b->val = val;
    b->on = on;
    b->p = i;
}

void STlib_updateBinIcon(st_binicon_t* bi, doom_boolean refresh)
{
    int x;
    int y;
    int w;
    int h;

    if (*bi->on && (bi->oldval != *bi->val || refresh))
    {
        x = bi->x - SHORT(bi->p->leftoffset);
        y = bi->y - SHORT(bi->p->topoffset);
        w = SHORT(bi->p->width);
        h = SHORT(bi->p->height);

        if (y - ST_Y < 0)
            I_Error("Error: updateBinIcon: y - ST_Y < 0");

        if (*bi->val)
            V_DrawPatch(bi->x, bi->y, STLIB_FG, bi->p);
        else
            V_CopyRect(x, y - ST_Y, STLIB_BG, w, h, x, y, STLIB_FG);

        bi->oldval = *bi->val;
    }
}