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XEEN: Fix Clouds cutscene background decoder

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This commit is contained in:
Paul Gilbert 2018-02-10 23:19:21 -05:00
parent 0b484d51b8
commit 678c320feb
1 changed files with 28 additions and 28 deletions
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56
engines/xeen/worldofxeen/clouds_cutscenes.cpp
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@ -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;
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;
uint *currP = arrP + 2;
while (threshold > *currP)
++currP;
--currP;
array3[offset] = array3[offset2];
array3[offset2] = val;
*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 offset3 = array2[offset] / 2;
array4[offset3] = offset2 * 2;
if ((offset3 * 2) < (ARRAY_SIZE * 4 - 2))
array4[offset3 + 1] = offset2 * 2;
int newIndex2 = array2[newIndex] / 2;
array2[newIndex] = offset4;
array4[newIndex2] = offset;
if ((newIndex2 * 2) <= (ARRAY_SIZE * 4 - 2))
array4[newIndex2 + 1] = offset;
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 / 2] = newIndex2 * 2;
offset = newIndex * 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;
}
}