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AVALANCHE: Repair writing off the boundaries in loadPictureGraphic().

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This commit is contained in:
uruk 2014-02-18 15:42:31 +01:00
parent 1b5cf54ced
commit 72c40dbd47
1 changed files with 4 additions and 1 deletions
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5
engines/avalanche/graphics.cpp
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@ -790,7 +790,10 @@ Graphics::Surface GraphicManager::loadPictureGraphic(Common::File &file) {
byte pixel = file.readByte();
for (int bit = 0; bit < 8; bit++) {
byte pixelBit = (pixel >> bit) & 1;
*(byte *)picture.getBasePtr(x + 7 - bit, y) += (pixelBit << plane);
// If the picture's width is not a multiple of 8, and we get over the boundary with the 'x' cycle, pixelBit is surely == 0.
// Otherwise, it doesn't cause trouble, since addign 0 doesn't have an effect at all.
if (pixelBit != 0)
*(byte *)picture.getBasePtr(x + 7 - bit, y) += (pixelBit << plane);
}
}
}