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FREESCAPE: read data from Driller Amstrad CPC release directly from a edsk file

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This commit is contained in:
neuromancer 2022-12-29 10:52:38 -03:00
parent cd5dffdce8
commit b327ebf4eb
2 changed files with 51 additions and 7 deletions
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2
engines/freescape/detection.cpp
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@ -63,7 +63,7 @@ static const ADGameDescription gameDescriptions[] = {
"driller",
"",
{
{"DRILLER.CPC.EXTRACTED", 0, "4e4b2fa20f96cea9c19ea3940ae76956", 204032},
{"DRILLER.CPC.EDSK", 0, "05df84207b5373e145ef90a3e4b98ae0", 215073},
AD_LISTEND
},
Common::EN_ANY,

56
engines/freescape/games/driller.cpp
View File

@ -22,6 +22,7 @@
#include "common/config-manager.h"
#include "common/events.h"
#include "common/file.h"
#include "common/memstream.h"
#include "common/random.h"
#include "freescape/freescape.h"
@ -351,6 +352,53 @@ void DrillerEngine::loadAssetsDemo() {
_angleRotationIndex = 0;
}
Common::SeekableReadStream *parseEDSK(const Common::String filename) {
debugC(1, kFreescapeDebugParser, "Trying to parse edsk file: %s", filename.c_str());
Common::File file;
file.open(filename);
if (!file.isOpen())
error("Failed to open %s", filename.c_str());
int size = file.size();
byte *edskBuffer = (byte *)malloc(size);
file.read(edskBuffer, size);
file.close();
// We don't know the final size, but we allocate enough
byte *memBuffer = (byte *)malloc(size);
byte ntracks = edskBuffer[48] - 2;
byte nsides = edskBuffer[49];
assert(nsides == 1);
int i = 256;
int j = 0;
while (ntracks > 0) {
ntracks--;
byte ssize = edskBuffer[i + 0x14];
int start = i + 0x100;
if (ssize == 2) {
i = i + 9 * 512 + 256;
} else if (ssize == 5) {
i = i + 8 * 512 + 256;
} else if (ssize == 0) {
i = i + 0x8400;
} else {
assert(ntracks == 0);
}
int osize = i - start;
debugC(1, kFreescapeDebugParser, "copying start: %x size: %x", start, osize);
memcpy(memBuffer + j, edskBuffer + start, osize);
j = j + osize;
}
free(edskBuffer);
return (new Common::MemoryReadStream(memBuffer, size));
}
void DrillerEngine::loadAssetsFullGame() {
Common::File file;
if (isAmiga()) {
@ -453,17 +501,13 @@ void DrillerEngine::loadAssetsFullGame() {
else
error("Unknown ZX spectrum variant");
} else if (isCPC()) {
file.open("driller.cpc.extracted");
if (!file.isOpen())
error("Failed to open driller.cpc.extracted");
Common::SeekableReadStream *stream = parseEDSK("driller.cpc.edsk");
//loadMessagesFixedSize(&file, 0x20e4, 14, 20);
//loadFonts(&file, 0x62ca);
//loadGlobalObjects(&file, 0x1c93);
load8bitBinary(&file, 0xec76, 4);
load8bitBinary(stream, 0xec76, 4);
} else if (_renderMode == Common::kRenderEGA) {
loadBundledImages();
file.open("DRILLE.EXE");