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author | Johannes Schickel | 2008-05-02 14:46:30 +0000 |
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committer | Johannes Schickel | 2008-05-02 14:46:30 +0000 |
commit | 4b5f3266cffa778b52f51a5a8cc39b16bac89584 (patch) | |
tree | 833f91d6f643e8d6b3b4c14ec18883a58cde28ac /engines/kyra/screen_hof.cpp | |
parent | 3f44977885d33ea694df399a83cf198dd85b5fed (diff) | |
download | scummvm-rg350-4b5f3266cffa778b52f51a5a8cc39b16bac89584.tar.gz scummvm-rg350-4b5f3266cffa778b52f51a5a8cc39b16bac89584.tar.bz2 scummvm-rg350-4b5f3266cffa778b52f51a5a8cc39b16bac89584.zip |
Started to refactor kyra2/kyra3 code to a common base. (regressions possible, compiling currently broken)
svn-id: r31817
Diffstat (limited to 'engines/kyra/screen_hof.cpp')
-rw-r--r-- | engines/kyra/screen_hof.cpp | 279 |
1 files changed, 279 insertions, 0 deletions
diff --git a/engines/kyra/screen_hof.cpp b/engines/kyra/screen_hof.cpp new file mode 100644 index 0000000000..9192626159 --- /dev/null +++ b/engines/kyra/screen_hof.cpp @@ -0,0 +1,279 @@ +/* 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 + |