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author | Paul Gilbert | 2018-02-10 23:19:21 -0500 |
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committer | Paul Gilbert | 2018-02-10 23:19:21 -0500 |
commit | 678c320feba1390b7971b08fd8a92ece90cc00b0 (patch) | |
tree | 0f3198e4b9612eb8b30b462ccb13cc6add0d5379 /engines/xeen | |
parent | 0b484d51b838d740bbb1d6bc12c06c25d225c197 (diff) | |
download | scummvm-rg350-678c320feba1390b7971b08fd8a92ece90cc00b0.tar.gz scummvm-rg350-678c320feba1390b7971b08fd8a92ece90cc00b0.tar.bz2 scummvm-rg350-678c320feba1390b7971b08fd8a92ece90cc00b0.zip |
XEEN: Fix Clouds cutscene background decoder
Diffstat (limited to 'engines/xeen')
-rw-r--r-- | engines/xeen/worldofxeen/clouds_cutscenes.cpp | 64 |
1 files changed, 32 insertions, 32 deletions
diff --git a/engines/xeen/worldofxeen/clouds_cutscenes.cpp b/engines/xeen/worldofxeen/clouds_cutscenes.cpp index 56ffe96fa5..aa2fb14834 100644 --- a/engines/xeen/worldofxeen/clouds_cutscenes.cpp +++ b/engines/xeen/worldofxeen/clouds_cutscenes.cpp @@ -992,6 +992,7 @@ void CloudsCutscenes::loadScreen(const Common::String &name) { for (int byteIdx = 0; byteIdx < count; ) { assert(fSrc.pos() < fSrc.size()); + int vMin = array2[(ARRAY_SIZE - 1) * 2]; int vThreshold = ARRAY_SIZE * 4 - 2; while (vMin < vThreshold) { @@ -1045,34 +1046,33 @@ void CloudsCutscenes::loadScreen(const Common::String &name) { } } - for (int offset = array4[627 + vMin / 2]; offset; offset = array4[offset / 2]) { - uint *arrP = &array3[offset / 2]; - uint threshold = ++arrP[0]; - if (threshold <= arrP[1]) - continue; - - uint *currP = arrP + 2; - while (threshold > *currP) - ++currP; - --currP; - - *arrP = *currP; - *currP = threshold; - int offset4 = array2[offset / 2]; - int newIndex = currP - array3; - array4[offset4 / 2] = newIndex * 2; - if (offset4 < (ARRAY_SIZE * 4 - 2)) - array4[offset4 / 2 + 1] = newIndex * 2; - - int newIndex2 = array2[newIndex] / 2; - array2[newIndex] = offset4; - array4[newIndex2] = offset; - if ((newIndex2 * 2) <= (ARRAY_SIZE * 4 - 2)) - array4[newIndex2 + 1] = offset; - - array2[offset / 2] = newIndex2 * 2; - offset = newIndex * 2; - } + int offset = array4[627 + vMin / 2] / 2; + do { + int offset2 = offset; + uint val = ++array3[offset2]; + if (val > array3[offset2 + 1]) { + while (val > array3[++offset2]) + ; + --offset2; + + array3[offset] = array3[offset2]; + array3[offset2] = val; + + int offset3 = array2[offset] / 2; + array4[offset3] = offset2 * 2; + if ((offset3 * 2) < (ARRAY_SIZE * 4 - 2)) + array4[offset3 + 1] = offset2 * 2; + + int offset4 = array2[offset2] / 2; + array2[offset2] = offset3 * 2; + array4[offset4] = offset * 2; + if ((offset4 * 2) < (ARRAY_SIZE * 4 - 2)) + array4[offset4 + 1] = offset * 2; + + array2[offset] = offset4 * 2; + offset = offset2; + } + } while ((offset = array4[offset] / 2) != 0); vMin /= 2; if (vMin < 256) { @@ -1122,16 +1122,16 @@ void CloudsCutscenes::loadScreen(const Common::String &name) { } t2Val |= (bitsHigh & 0x3F); - int buffOffset = array2[ARRAY_LAST2] - t2Val - 1; + uint &last2 = array2[ARRAY_LAST2]; + int buffOffset = last2 - t2Val - 1; for (int ctr = 0; ctr < vMin - 253; ++ctr, ++buffOffset) { buffOffset &= 0xfff; byte b = buffer[buffOffset]; *destP++ = b; - uint &buffOffset2 = array2[ARRAY_LAST2]; - buffer[buffOffset2] = b; - buffOffset2 = (buffOffset2 + 1) & 0xfff; + buffer[last2] = b; + last2 = (last2 + 1) & 0xfff; ++byteIdx; } } |