mirror of
https://github.com/libretro/scummvm.git
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294 lines
7.8 KiB
C++
294 lines
7.8 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2001 Ludvig Strigeus
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* Copyright (C) 2001-2006 The ScummVM project
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#include "common/stdafx.h"
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#include "scumm/he/floodfill_he.h"
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#include "scumm/he/intern_he.h"
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#include "scumm/resource.h"
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#include "scumm/scumm.h"
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namespace Scumm {
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static bool floodFillPixelCheck(int x, int y, const FloodFillState *ffs) {
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int diffColor = ffs->color1 - ffs->color2;
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if (x >= 0 && x < ffs->dst_w && y >= 0 && y < ffs->dst_h) {
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uint8 color = *(ffs->dst + y * ffs->dst_w + x);
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diffColor = color - ffs->color1;
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}
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return diffColor == 0;
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}
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static void floodFillProcessRect(FloodFillState *ffs, const Common::Rect *r) {
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Common::Rect *dr = &ffs->dstBox;
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if (dr->right >= dr->left && dr->top <= dr->bottom) {
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int rw = r->right - r->left + 1;
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int rh = r->bottom - r->top + 1;
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assert(r->top + rh <= ffs->dst_h);
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assert(r->left + rw <= ffs->dst_w);
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uint8 *dst = ffs->dst + r->top * ffs->dst_w + r->left;
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if (rw <= 1) {
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--rh;
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while (rh >= 0) {
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*dst = ffs->color2;
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dst += ffs->dst_w;
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--rh;
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}
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} else {
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--rh;
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while (rh >= 0) {
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memset(dst, ffs->color2, rw);
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dst += ffs->dst_w;
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--rh;
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}
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}
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dr->extend(*r);
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} else {
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*dr = *r;
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}
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}
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static void floodFillAddLine(FloodFillLine **ffl, int y, int x1, int x2, int dy) {
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(*ffl)->y = y;
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(*ffl)->x1 = x1;
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(*ffl)->x2 = x2;
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(*ffl)->inc = dy;
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(*ffl)++;
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}
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static void floodFillProcess(int x, int y, FloodFillState *ffs, FloodFillPixelCheckCallback pixelCheckCallback) {
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ffs->dstBox.left = ffs->dstBox.top = 12345;
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ffs->dstBox.right = ffs->dstBox.bottom = -12345;
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FloodFillLine **fillLineCur = &ffs->fillLineTableCur;
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FloodFillLine **fillLineEnd = &ffs->fillLineTableEnd;
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assert(*fillLineCur < *fillLineEnd);
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if (ffs->srcBox.top <= y + 1 && ffs->srcBox.bottom >= y + 1) {
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(*fillLineCur)->y = y;
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(*fillLineCur)->x1 = x;
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(*fillLineCur)->x2 = x;
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(*fillLineCur)->inc = 1;
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(*fillLineCur)++;
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}
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assert(*fillLineCur < *fillLineEnd);
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if (ffs->srcBox.top <= y && ffs->srcBox.bottom >= y) {
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(*fillLineCur)->y = y + 1;
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(*fillLineCur)->x1 = x;
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(*fillLineCur)->x2 = x;
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(*fillLineCur)->inc = -1;
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(*fillLineCur)++;
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}
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assert(ffs->fillLineTable <= *fillLineCur);
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FloodFillLine **fillLineStart = fillLineCur;
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while (ffs->fillLineTable < *fillLineStart) {
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Common::Rect r;
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int x_start;
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FloodFillLine *fflCur = --(*fillLineCur);
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int dy = fflCur->inc;
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int x_end = fflCur->x2;
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int x1 = fflCur->x1;
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int x2 = fflCur->x1 + 1;
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r.bottom = r.top = y = fflCur->y + fflCur->inc;
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r.left = x2;
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r.right = x1;
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x = x1;
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while (ffs->srcBox.left <= x) {
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if (!(*pixelCheckCallback)(x, y, ffs)) {
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break;
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}
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r.left = x;
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--x;
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}
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if (r.right >= r.left && r.top <= r.bottom) {
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floodFillProcessRect(ffs, &r);
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}
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if (x >= x1) goto skip;
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x_start = x + 1;
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if (x1 > x_start) {
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assert(*fillLineEnd > *fillLineCur);
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if (ffs->srcBox.top <= y - dy && ffs->srcBox.bottom >= y - dy) {
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--x1;
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floodFillAddLine(fillLineCur, y, x_start, x1, -dy);
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}
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}
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x = x2;
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while (x_start <= x_end) {
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r.left = x;
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r.top = y;
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r.right = x - 1;
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r.bottom = y;
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while (ffs->srcBox.right >= x) {
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if (!(*pixelCheckCallback)(x, y, ffs)) {
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break;
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}
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r.right = x;
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++x;
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}
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if (r.right >= r.left && r.top <= r.bottom) {
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floodFillProcessRect(ffs, &r);
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}
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assert(ffs->fillLineTableCur < ffs->fillLineTableEnd);
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if (ffs->srcBox.top <= y + dy && ffs->srcBox.bottom >= y + dy) {
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floodFillAddLine(&ffs->fillLineTableCur, y, x_start, x - 1, dy);
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}
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x_start = x_end + 1;
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if (x > x_start) {
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assert(ffs->fillLineTableCur < ffs->fillLineTableEnd);
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if (ffs->srcBox.top <= y - dy && ffs->srcBox.bottom >= y - dy) {
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floodFillAddLine(&ffs->fillLineTableCur, y, x_start, x - 1, -dy);
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}
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}
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skip:
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++x;
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while (x <= x_end) {
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if ((*pixelCheckCallback)(x, y, ffs)) {
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break;
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}
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++x;
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}
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x_start = x;
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}
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}
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}
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void floodFill(FloodFillParameters *ffp, ScummEngine_v90he *vm) {
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uint8 *dst;
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VirtScreen *vs = &vm->virtscr[kMainVirtScreen];
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if (ffp->flags & 0x8000) {
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dst = vs->getBackPixels(0, vs->topline);
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} else {
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dst = vs->getPixels(0, vs->topline);
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}
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uint8 color = ffp->flags & 0xFF;
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Common::Rect r;
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r.left = r.top = 12345;
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r.right = r.bottom = -12345;
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FloodFillState *ffs = new FloodFillState;
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ffs->fillLineTableCount = vs->h * 2;
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ffs->fillLineTable = new FloodFillLine[ffs->fillLineTableCount];
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ffs->color2 = color;
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ffs->dst = dst;
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ffs->dst_w = vs->w;
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ffs->dst_h = vs->h;
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ffs->srcBox = ffp->box;
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ffs->fillLineTableCur = &ffs->fillLineTable[0];
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ffs->fillLineTableEnd = &ffs->fillLineTable[ffs->fillLineTableCount];
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if (ffp->x < 0 || ffp->y < 0 || ffp->x >= vs->w || ffp->y >= vs->h) {
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ffs->color1 = color;
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} else {
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ffs->color1 = *(dst + ffp->y * vs->w + ffp->x);
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}
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debug(5, "floodFill() x=%d y=%d color1=%d ffp->flags=0x%X", ffp->x, ffp->y, ffs->color1, ffp->flags);
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if (ffs->color1 != color) {
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floodFillProcess(ffp->x, ffp->y, ffs, floodFillPixelCheck);
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r = ffs->dstBox;
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}
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r.debugPrint(5, "floodFill() dirty_rect");
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delete[] ffs->fillLineTable;
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delete ffs;
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vm->VAR(119) = 1;
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if (r.left <= r.right && r.top <= r.bottom) {
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if (ffp->flags & 0x8000) {
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vm->restoreBackgroundHE(r);
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} else {
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++r.bottom;
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vm->markRectAsDirty(kMainVirtScreen, r);
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}
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}
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}
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void Wiz::fillWizFlood(const WizParameters *params) {
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if (params->processFlags & kWPFClipBox2) {
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int px = params->box2.left;
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int py = params->box2.top;
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uint8 *dataPtr = _vm->getResourceAddress(rtImage, params->img.resNum);
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if (dataPtr) {
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int state = 0;
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if (params->processFlags & kWPFNewState) {
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state = params->img.state;
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}
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uint8 *wizh = _vm->findWrappedBlock(MKID_BE('WIZH'), dataPtr, state, 0);
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assert(wizh);
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int c = READ_LE_UINT32(wizh + 0x0);
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int w = READ_LE_UINT32(wizh + 0x4);
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int h = READ_LE_UINT32(wizh + 0x8);
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assert(c == 0);
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Common::Rect imageRect(w, h);
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if (params->processFlags & kWPFClipBox) {
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if (!imageRect.intersects(params->box)) {
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return;
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}
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imageRect.clip(params->box);
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}
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uint8 color = _vm->VAR(93);
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if (params->processFlags & kWPFFillColor) {
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color = params->fillColor;
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}
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if (imageRect.contains(px, py)) {
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uint8 *wizd = _vm->findWrappedBlock(MKID_BE('WIZD'), dataPtr, state, 0);
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assert(wizd);
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FloodFillState *ffs = new FloodFillState;
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ffs->fillLineTableCount = h * 2;
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ffs->fillLineTable = new FloodFillLine[ffs->fillLineTableCount];
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ffs->color2 = color;
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ffs->dst = wizd;
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ffs->dst_w = w;
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ffs->dst_h = h;
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ffs->srcBox = imageRect;
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ffs->fillLineTableCur = &ffs->fillLineTable[0];
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ffs->fillLineTableEnd = &ffs->fillLineTable[ffs->fillLineTableCount];
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if (px < 0 || py < 0 || px >= w || py >= h) {
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ffs->color1 = color;
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} else {
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ffs->color1 = *(wizd + py * w + px);
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}
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debug(0, "floodFill() x=%d y=%d color1=%d", px, py, ffs->color1);
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if (ffs->color1 != color) {
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floodFillProcess(px, py, ffs, floodFillPixelCheck);
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}
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delete[] ffs->fillLineTable;
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delete ffs;
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}
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}
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}
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_vm->_res->setModified(rtImage, params->img.resNum);
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}
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} // End of namespace Scumm
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