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-rw-r--r--engines/kyra/screen_hof.cpp279
1 files changed, 279 insertions, 0 deletions
diff --git a/engines/kyra/screen_hof.cpp b/engines/kyra/screen_hof.cpp
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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+
+#include "common/endian.h"
+
+#include "kyra/kyra_hof.h"
+#include "kyra/screen_hof.h"
+
+namespace Kyra {
+
+Screen_HoF::Screen_HoF(KyraEngine_HoF *vm, OSystem *system)
+ : Screen_v2(vm, system) {
+ _vm = vm;
+ _wsaFrameAnimBuffer = new uint8[1024];
+}
+
+Screen_HoF::~Screen_HoF() {
+ delete [] _wsaFrameAnimBuffer;
+}
+
+void Screen_HoF::setScreenDim(int dim) {
+ debugC(9, kDebugLevelScreen, "Screen_HoF::setScreenDim(%d)", dim);
+ assert(dim < _screenDimTableCount);
+ _curDim = &_screenDimTable[dim];
+}
+
+const ScreenDim *Screen_HoF::getScreenDim(int dim) {
+ debugC(9, kDebugLevelScreen, "Screen_HoF::getScreenDim(%d)", dim);
+ assert(dim < _screenDimTableCount);
+ return &_screenDimTable[dim];
+}
+
+void Screen_HoF::generateGrayOverlay(const uint8 *srcPal, uint8 *grayOverlay, int factor, int addR, int addG, int addB, int lastColor, bool flag) {
+ uint8 tmpPal[768];
+
+ for (int i = 0; i != lastColor; i++) {
+ if (flag) {
+ int v = ((((srcPal[3 * i] & 0x3f) + (srcPal[3 * i + 1] & 0x3f)
+ + (srcPal[3 * i + 2] & 0x3f)) / 3) * factor) / 0x40;
+ tmpPal[3 * i] = tmpPal[3 * i + 1] = tmpPal[3 * i + 2] = v & 0xff;
+ } else {
+ int v = (((srcPal[3 * i] & 0x3f) * factor) / 0x40) + addR;
+ tmpPal[3 * i] = (v > 0x3f) ? 0x3f : v & 0xff;
+ v = (((srcPal[3 * i + 1] & 0x3f) * factor) / 0x40) + addG;
+ tmpPal[3 * i + 1] = (v > 0x3f) ? 0x3f : v & 0xff;
+ v = (((srcPal[3 * i + 2] & 0x3f) * factor) / 0x40) + addB;
+ tmpPal[3 * i + 2] = (v > 0x3f) ? 0x3f : v & 0xff;
+ }
+ }
+
+ for (int i = 0; i < lastColor; i++)
+ grayOverlay[i] = findLeastDifferentColor(tmpPal + 3 * i, srcPal, lastColor);
+}
+
+void Screen_HoF::wsaFrameAnimationStep(int x1, int y1, int x2, int y2,
+ int w1, int h1, int w2, int h2, int srcPage, int dstPage, int dim) {
+
+ if (!(w1 || h1 || w2 || h2))
+ return;
+
+ ScreenDim cdm = _screenDimTable[dim];
+ cdm.sx <<= 3;
+ cdm.w <<= 3;
+
+ int na = 0, nb = 0, nc = w2;
+
+ if (!calcBounds(cdm.w, cdm.h, x2, y2, w2, h2, na, nb, nc))
+ return;
+
+ const uint8 *src = getPagePtr(srcPage) + y1 * 320;
+ uint8 *dst = getPagePtr(dstPage) + (y2 + cdm.sy) * 320;
+
+ int u = -1;
+
+ do {
+ int t = (nb * h1) / h2;
+ if (t != u) {
+ u = t;
+ const uint8 *s = src + (x1 + t) * 320;
+ uint8 *dt = (uint8*) _wsaFrameAnimBuffer;
+
+ t = w2 - w1;
+ if (!t) {
+ memcpy(dt, s, w2);
+ } else if (t > 0) {
+ if (w1 == 1) {
+ memset(dt, *s, w2);
+ } else {
+ t = ((((((w2 - w1 + 1) & 0xffff) << 8) / w1) + 0x100) & 0xffff) << 8;
+ int bp = 0;
+ for (int i = 0; i < w1; i++) {
+ int cnt = (t >> 16);
+ bp += (t & 0xffff);
+ if (bp > 0xffff) {
+ bp -= 0xffff;
+ cnt++;
+ }
+ memset(dt, *s++, cnt);
+ dt += cnt;
+ }
+ }
+ } else {
+ if (w2 == 1) {
+ *dt = *s;
+ } else {
+ t = (((((w1 - w2) & 0xffff) << 8) / w2) & 0xffff) << 8;
+ int bp = 0;
+ for (int i = 0; i < w2; i++) {
+ *dt++ = *s++;
+ bp += (t & 0xffff);
+ if (bp > 0xffff) {
+ bp -= 0xffff;
+ s++;
+ }
+ s += (t >> 16);
+ }
+ }
+ }
+ }
+ memcpy(dst + x2 + cdm.sx, _wsaFrameAnimBuffer + na, w2);
+ dst += 320;
+ } while (++nb < h2);
+}
+
+void Screen_HoF::cmpFadeFrameStep(int srcPage, int srcW, int srcH, int srcX, int srcY, int dstPage, int dstW,
+ int dstH, int dstX, int dstY, int cmpW, int cmpH, int cmpPage) {
+
+ if (!(cmpW || cmpH ))
+ return;
+
+ int r1, r2, r3, r4, r5, r6;
+
+ int X1 = srcX;
+ int Y1 = srcY;
+ int W1 = cmpW;
+ int H1 = cmpH;
+
+ if (!calcBounds(srcW, srcH, X1, Y1, W1, H1, r1, r2, r3))
+ return;
+
+ int X2 = dstX;
+ int Y2 = dstY;
+ int W2 = W1;
+ int H2 = H1;
+
+ if (!calcBounds(dstW, dstH, X2, Y2, W2, H2, r4, r5, r6))
+ return;
+
+ const uint8 *src = getPagePtr(srcPage) + srcW * (Y1 + r5);
+ uint8 *dst = getPagePtr(dstPage) + dstW * (Y2 + r2);
+ const uint8 *cmp = getPagePtr(cmpPage);
+
+ while (H2--) {
+ const uint8 *s = src + r4 + X1;
+ uint8 *d = dst + r1 + X2;
+
+ for (int i = 0; i < W2; i++) {
+ int ix = (*s++ << 8) + *d;
+ *d++ = cmp[ix];
+ }
+
+ src += W1;
+ dst += W2;
+ }
+}
+
+void Screen_HoF::copyPageMemory(int srcPage, int srcPos, int dstPage, int dstPos, int numBytes) {
+ const uint8 *src = getPagePtr(srcPage) + srcPos;
+ uint8 *dst = getPagePtr(dstPage) + dstPos;
+ memcpy(dst, src, numBytes);
+}
+
+
+void Screen_HoF::copyRegionEx(int srcPage, int srcW, int srcH, int dstPage, int dstX,int dstY, int dstW, int dstH, const ScreenDim *dim, bool flag) {
+ int x0 = dim->sx << 3;
+ int y0 = dim->sy;
+ int w0 = dim->w << 3;
+ int h0 = dim->h;
+
+ int x1 = dstX;
+ int y1 = dstY;
+ int w1 = dstW;
+ int h1 = dstH;
+
+ int x2, y2, w2;
+
+ calcBounds(w0, h0, x1, y1, w1, h1, x2, y2, w2);
+
+ const uint8 *src = getPagePtr(srcPage) + (320 * srcH) + srcW;
+ uint8 *dst = getPagePtr(dstPage) + 320 * (y0 + y1);
+
+ for (int y = 0; y < h1; y++) {
+ const uint8 *s = src + x2;
+ uint8 *d = dst + x0 + x1;
+
+ if (flag)
+ d += (h1 >> 1);
+
+ for (int x = 0; x < w1; x++) {
+ if (*s)
+ *d = *s;
+ s++;
+ d++;
+ }
+ dst += 320;
+ src += 320;
+ }
+}
+
+bool Screen_HoF::calcBounds(int w0, int h0, int &x1, int &y1, int &w1, int &h1, int &x2, int &y2, int &w2) {
+ x2 = 0;
+ y2 = 0;
+ w2 = w1;
+
+ int t = x1 + w1;
+ if (t < 1) {
+ w1 = h1 = -1;
+ } else {
+ if (t <= x1) {
+ x2 = w1 - t;
+ w1 = t;
+ x1 = 0;
+ }
+ t = w0 - x1;
+ if (t < 1) {
+ w1 = h1 = -1;
+ } else {
+ if (t <= w1) {
+ w1 = t;
+ }
+ w2 -= w1;
+ t = h1 + y1;
+ if (t < 1) {
+ w1 = h1 = -1;
+ } else {
+ if (t <= y1) {
+ y2 = h1 - t;
+ h1 = t;
+ y1 = 0;
+ }
+ t = h0 - y1;
+ if (t < 1) {
+ w1 = h1 = -1;
+ } else {
+ if (t <= h1) {
+ h1 = t;
+ }
+ }
+ }
+ }
+ }
+
+ return (w1 == -1) ? false : true;
+}
+
+} // end of namespace Kyra
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-19 16:09:18 +0000