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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.
*
*/
#include "scumm/he/intern_he.h"
#include "engines/scumm/he/moonbase/moonbase.h"
namespace Scumm {
enum {
kBptHeaderSize = 8,
kReflectionClipped = 0,
kNotClipped = 1,
kSpecializedNotClipped = 2
};
static void blitDistortionCore(
Graphics::Surface *dstBitmap,
const int x, const int y,
const Graphics::Surface *distortionBitmap,
const Common::Rect *optionalclipRectPtr,
int transferOp,
const Graphics::Surface *srcBitmap,
Common::Rect *srcClipRect
) {
Common::Rect clipRect(dstBitmap->w, dstBitmap->h);
if (optionalclipRectPtr)
if (!clipRect.intersects(*optionalclipRectPtr))
return;
clipRect.clip(*optionalclipRectPtr);
Common::Rect distortionRect(distortionBitmap->w, distortionBitmap->h);
Common::Rect dstRect(x, y, x + distortionRect.width(), y + distortionRect.height());
if (!dstRect.intersects(clipRect))
return;
dstRect.clip(clipRect);
distortionRect.moveTo(dstRect.left - x, dstRect.top - y);
const byte *distortionPtr = (const byte *)distortionBitmap->getBasePtr(distortionRect.left, distortionRect.top);
byte *dstPtr = (byte *)dstBitmap->getBasePtr(dstRect.left, dstRect.top);
int cw = dstRect.width();
int ch = dstRect.height();
int idx = dstRect.left;
int dy = dstRect.top;
int baseX, baseY;
const byte *srcData = (const byte *)srcBitmap->getBasePtr(0, 0);
int srcPitch = srcBitmap->pitch;
switch (transferOp) {
case kReflectionClipped:
case kNotClipped:
baseX = -(0x1f / 2); // Half range
baseY = -(0x1f / 2);
break;
case kSpecializedNotClipped:
default:
baseX = 0;
baseY = 0;
}
while (--ch >= 0) {
uint16 *d = (uint16 *)dstPtr;
const uint16 *is = (const uint16 *)distortionPtr;
int dx = idx;
for (int i = cw; --i >= 0;) {
uint16 p = READ_LE_UINT16(is);
int sx = baseX + dx + ((p >> 5) & 0x1f); // G color
int sy = baseY + dy + (p & 0x1f); // B color;
if (transferOp == kReflectionClipped) {
if (sx < srcClipRect->left)
sx -= (srcClipRect->left - sx);
if (sx > srcClipRect->right)
sx -= (sx - srcClipRect->right);
sx = MAX<int>(srcClipRect->left, MIN<int>(sx, srcClipRect->right));
if (sy < srcClipRect->top)
sy -= (srcClipRect->top - sy);
if (sy > srcClipRect->bottom)
sy -= (sy - srcClipRect->bottom);
sy = MAX<int>(srcClipRect->top, MIN<int>(sy, srcClipRect->bottom));
}
*d = *((const uint16 *)(srcData + sy * srcPitch + sx * 2));
++d;
++is;
++dx;
}
dstPtr += dstBitmap->pitch;
distortionPtr += distortionBitmap->pitch;
++dy;
}
}
void Moonbase::blitDistortion(byte *bufferData, const int bufferWidth, const int bufferHeight, const int bufferPitch,
const Common::Rect *optionalClippingRect, byte *dataStream, const int x, const int y, byte *altSourceBuffer) {
byte *sourcePixels = (altSourceBuffer) ? altSourceBuffer : bufferData;
Common::Rect dstLimitsRect(bufferWidth, bufferHeight);
Common::Rect clippedDstRect = dstLimitsRect;
if (optionalClippingRect) {
if (!dstLimitsRect.intersects(*optionalClippingRect))
return;
dstLimitsRect.clip(*optionalClippingRect);
} else {
clippedDstRect = dstLimitsRect;
}
int w = READ_LE_UINT16(dataStream + kBptHeaderSize + 0);
int h = READ_LE_UINT16(dataStream + kBptHeaderSize + 2);
Common::Rect srcLimitsRect(w, h);
Common::Rect clippedSrcRect = srcLimitsRect;
Common::Rect dstOperation(x, y, x + clippedSrcRect.width(), y + clippedSrcRect.height());
if (!clippedDstRect.intersects(dstOperation))
return;
clippedDstRect.clip(dstOperation);
int subBlockCount = READ_LE_UINT16(dataStream + kBptHeaderSize + 4);
byte *subBlockStream = dataStream + kBptHeaderSize + READ_LE_UINT32(dataStream + 4);
int cx1 = clippedDstRect.left;
int cy1 = clippedDstRect.top;
int cx2 = clippedDstRect.right - 1;
int cy2 = clippedDstRect.bottom - 1;
for (int i = 0; i < subBlockCount; i++) {
byte *blockData = subBlockStream;
uint32 blockSize = READ_LE_UINT32(blockData); blockData += 4;
subBlockStream += blockSize;
int xOffset = READ_LE_UINT16(blockData); blockData += 2;
int yOffset = READ_LE_UINT16(blockData); blockData += 2;
int width = READ_LE_UINT16(blockData); blockData += 2;
int height = READ_LE_UINT16(blockData); blockData += 2;
int l_reach = READ_LE_UINT16(blockData); blockData += 2;
int r_reach = READ_LE_UINT16(blockData); blockData += 2;
int t_reach = READ_LE_UINT16(blockData); blockData += 2;
int b_reach = READ_LE_UINT16(blockData); blockData += 2;
int distortionPitch = ((width * 2 + 7) / 8); // 2 for 555
if (width == 0 && height == 0)
continue;
Graphics::Surface dstBitmap;
dstBitmap.init(bufferWidth, bufferHeight, bufferPitch, bufferData, Graphics::PixelFormat(2, 5, 5, 5, 0, 10, 5, 0, 0));
Graphics::Surface srcBitmap;
srcBitmap.init(bufferWidth, bufferHeight, bufferPitch, sourcePixels, Graphics::PixelFormat(2, 5, 5, 5, 0, 10, 5, 0, 0));
Graphics::Surface distortionBitmap;
distortionBitmap.init(width, height, distortionPitch, blockData, Graphics::PixelFormat(2, 5, 5, 5, 0, 10, 5, 0, 0));
Common::Rect srcClipRect(cx1, cy1, cx2, cy2);
Common::Rect dstClipRect(cx1, cy1, cx2, cy2);
int src_x = (x + xOffset);
int src_y = (y + yOffset);
Common::Rect srcReach((src_x - l_reach), (src_y - t_reach), (src_x + r_reach), (src_y + b_reach));
Common::Rect srcLimits(srcBitmap.w, srcBitmap.h);
if (!srcLimits.intersects(srcClipRect))
return;
srcLimits.clip(srcClipRect);
if (!srcReach.intersects(srcLimits))
return;
srcReach.clip(srcLimits);
if (srcLimits.contains(srcReach)) {
if (srcBitmap.pitch == 1280) {
blitDistortionCore(&dstBitmap, src_x, src_y, &distortionBitmap, &dstClipRect, kSpecializedNotClipped, &srcBitmap, 0);
} else {
blitDistortionCore(&dstBitmap, src_x, src_y, &distortionBitmap, &dstClipRect, kNotClipped, &srcBitmap, 0);
}
} else {
blitDistortionCore(&dstBitmap, src_x, src_y, &distortionBitmap, &dstClipRect, kReflectionClipped, &srcBitmap, &srcLimits);
}
}
}
}
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