Rayman Pirate-Community

Cairnie wrote:There probably was one for use in gaming conventions before the game came out, I remember IGN or similar play one and uploaded a small realplayer clip of it (which is now gone of course).

#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>
#include <string.h>
#define BITS 4

int CompareWith(char *name, unsigned char *buffer1, int bytes, unsigned long stopAfter) {
	FILE *file;
	unsigned char *buffer2;
	unsigned long fileLen;

	//Open file
	file = fopen(name, "rb");
	if (!file)
	{
		fprintf(stderr, "Unable to open file %s\n", name);
		return -1;
	}
	
	//Get file length
	fseek(file, 0, SEEK_END);
	fileLen=ftell(file);
	fseek(file, 0, SEEK_SET);

	//Allocate memory
	buffer2=(unsigned char *)malloc(fileLen+1);
	if (!buffer2)
	{
		fprintf(stderr, "Memory error!\n");
                                fclose(file);
		return -1;
	}

	//Read file contents into buffer2
	fread(buffer2, fileLen, 1, file);
	fclose(file);
	
	int i;
	int j;
	unsigned long long number1;
	unsigned long long number2;
	unsigned long long diff;
	for(i=0;i<stopAfter;i+=bytes) {
		number1 = number2 = 0;
		for(j=0;j<bytes;j++) {
			number1 += (unsigned long long)(buffer1[i+j]) << j*8;
			number2 += (unsigned long long)(buffer2[i+j]) << j*8;
		}
		diff = (number1>number2) ? (number1-number2) : (number2-number1);
		printf("%i: %llu\n", i/bytes + 1, diff);
	}

	free(buffer1);
	free(buffer2);
	return i/bytes;
}

int main(int argc, char **argv)
{
	if(argc < 2)
	{
		printf("Error! No filename specified!\n");
		return 1;
	}
	
	int bytes = BITS;
	if(argc > 2) {
		int ai = 0;
		for(ai=0;ai<argc;ai++) {
			if(!strcmp("--bytes", argv[ai]) && argc > ai) {
				bytes = atoi(argv[ai+1]);
			}
		}
	}
	int maxBytes = sizeof(long long);
	if(bytes > maxBytes) {
		printf("Too many bytes!\nAutosetting to %i...\n", maxBytes);
		bytes = maxBytes;
	}
	
	FILE *file;
	unsigned char *buffer;
	unsigned long fileLen;

	//Open file
	file = fopen(argv[1], "rb");
	if (!file)
	{
		fprintf(stderr, "Unable to open file %s\n", argv[1]);
		return 1;
	}
	
	//Get file length
	fseek(file, 0, SEEK_END);
	fileLen=ftell(file);
	fseek(file, 0, SEEK_SET);

	//Allocate memory
	buffer=(unsigned char *)malloc(fileLen+1);
	if (!buffer)
	{
		fprintf(stderr, "Memory error!\n");
                                fclose(file);
		return 1;
	}

	//Read file contents into buffer
	fread(buffer, fileLen, 1, file);
	fclose(file);
	
	unsigned long stopAfter = fileLen;
	if(argc > 2) {
		int aj = 0;
		for(aj=0;aj<argc;aj++) {
			if(!strcmp("--numbers", argv[aj]) && argc > aj) {
				stopAfter = atoi(argv[aj+1]) * bytes;
			}
		}
	}
	if(stopAfter > fileLen) {
		stopAfter = fileLen;
	}
	
	int signalsOnly = 0;
	if(argc > 2) {
		int ak = 0;
		for(ak=0;ak<argc;ak++) {
			if(!strcmp("--compare", argv[ak]) && argc > ak) {
				int bytesCompared = CompareWith(argv[ak+1], buffer, bytes, stopAfter);
				if(bytesCompared > 0) {
					printf("\nCompared %i %i-bit numbers from %s and %s\n", bytesCompared, bytes * 8, argv[1], argv[ak+1]);
					return 0;
				} else {
					return 1;
				}
			} else if(!strcmp("--signals", argv[ak])) {
				signalsOnly = 1;
			}
		}
	}

	int i;
	int j;
	unsigned long long number;
	int skippingList;
	for(i=0;i<stopAfter;i+=bytes) {
		if( i>1416 && i<3496 ) {
			if(!skippingList) {
				printf("(Skipped maplist)\n");
				skippingList = 1;
			}
		} else {
			skippingList = 0;
			number = 0;
			for(j=0;j<bytes;j++) {
				number += (unsigned long long)(buffer[i+j]) << j*8;
			}
			if(bytes == 4 && number == ('C' + ('A'<<8) + ('C'<<16) + ('A'<<24))) {
				//CACA seems to change it :P
				printf("Found possible signaling number %llu @ %i\n", number, i/bytes);
				i -= 2; //Offset slightly
				bytes = 6;
			}
			if(bytes == 6 && number == (0xA0UL + (0xBDUL<<8) + (0xE5UL<<16) + (0x07UL<<24) + (0x07UL<<32))) {
				printf("Found possible signaling number %llu @ %i\n", number, i/bytes);
				bytes = 8;
			}
			if( !signalsOnly ) {
				printf("%i: %llu (%i-bit)\n", i/bytes + 1, number, bytes * 8);
			}
		}
	}
	printf("\nRead %i %i-bit numbers from %s\n", i/bytes, bytes * 8, argv[1]);

	free(buffer);
	return 0;
}

• --bytes <number> Read the numbers as being <number> bytes wide (defaults to 4)
• --numbers <number> Stop after reading <number> numbers from the file (defaults to reading the whole file)
• --compare <filename> Compare the file specified as the first argument with <filename> by showing the differences between the numbers
• --signals Don't show every number, just those that have been programmed in as "signalling numbers" to change the number width

PluMGMK wrote:Maybe they planned a demo but never released it?

That other texture looks like a very frustrated developer tried to get his message across to early testers by actually scanning in a post-it!

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
As for my C programme to read the patterns, here's what I have so far:

Code: Select all

#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>
#include <string.h>
#define BITS 4

int CompareWith(char *name, unsigned char *buffer1, int bytes, unsigned long stopAfter) {
	FILE *file;
	unsigned char *buffer2;
	unsigned long fileLen;

	//Open file
	file = fopen(name, "rb");
	if (!file)
	{
		fprintf(stderr, "Unable to open file %s\n", name);
		return -1;
	}
	
	//Get file length
	fseek(file, 0, SEEK_END);
	fileLen=ftell(file);
	fseek(file, 0, SEEK_SET);

	//Allocate memory
	buffer2=(unsigned char *)malloc(fileLen+1);
	if (!buffer2)
	{
		fprintf(stderr, "Memory error!\n");
                                fclose(file);
		return -1;
	}

	//Read file contents into buffer2
	fread(buffer2, fileLen, 1, file);
	fclose(file);
	
	int i;
	int j;
	unsigned long long number1;
	unsigned long long number2;
	unsigned long long diff;
	for(i=0;i<stopAfter;i+=bytes) {
		number1 = number2 = 0;
		for(j=0;j<bytes;j++) {
			number1 += (unsigned long long)(buffer1[i+j]) << j*8;
			number2 += (unsigned long long)(buffer2[i+j]) << j*8;
		}
		diff = (number1>number2) ? (number1-number2) : (number2-number1);
		printf("%i: %llu\n", i/bytes + 1, diff);
	}

	free(buffer1);
	free(buffer2);
	return i/bytes;
}

int main(int argc, char **argv)
{
	if(argc < 2)
	{
		printf("Error! No filename specified!\n");
		return 1;
	}
	
	int bytes = BITS;
	if(argc > 2) {
		int ai = 0;
		for(ai=0;ai<argc;ai++) {
			if(!strcmp("--bytes", argv[ai]) && argc > ai) {
				bytes = atoi(argv[ai+1]);
			}
		}
	}
	int maxBytes = sizeof(long long);
	if(bytes > maxBytes) {
		printf("Too many bytes!\nAutosetting to %i...\n", maxBytes);
		bytes = maxBytes;
	}
	
	FILE *file;
	unsigned char *buffer;
	unsigned long fileLen;

	//Open file
	file = fopen(argv[1], "rb");
	if (!file)
	{
		fprintf(stderr, "Unable to open file %s\n", argv[1]);
		return 1;
	}
	
	//Get file length
	fseek(file, 0, SEEK_END);
	fileLen=ftell(file);
	fseek(file, 0, SEEK_SET);

	//Allocate memory
	buffer=(unsigned char *)malloc(fileLen+1);
	if (!buffer)
	{
		fprintf(stderr, "Memory error!\n");
                                fclose(file);
		return 1;
	}

	//Read file contents into buffer
	fread(buffer, fileLen, 1, file);
	fclose(file);
	
	unsigned long stopAfter = fileLen;
	if(argc > 2) {
		int aj = 0;
		for(aj=0;aj<argc;aj++) {
			if(!strcmp("--numbers", argv[aj]) && argc > aj) {
				stopAfter = atoi(argv[aj+1]) * bytes;
			}
		}
	}
	if(stopAfter > fileLen) {
		stopAfter = fileLen;
	}
	
	int signalsOnly = 0;
	if(argc > 2) {
		int ak = 0;
		for(ak=0;ak<argc;ak++) {
			if(!strcmp("--compare", argv[ak]) && argc > ak) {
				int bytesCompared = CompareWith(argv[ak+1], buffer, bytes, stopAfter);
				if(bytesCompared > 0) {
					printf("\nCompared %i %i-bit numbers from %s and %s\n", bytesCompared, bytes * 8, argv[1], argv[ak+1]);
					return 0;
				} else {
					return 1;
				}
			} else if(!strcmp("--signals", argv[ak])) {
				signalsOnly = 1;
			}
		}
	}

	int i;
	int j;
	unsigned long long number;
	int skippingList;
	for(i=0;i<stopAfter;i+=bytes) {
		if( i>1416 && i<3496 ) {
			if(!skippingList) {
				printf("(Skipped maplist)\n");
				skippingList = 1;
			}
		} else {
			skippingList = 0;
			number = 0;
			for(j=0;j<bytes;j++) {
				number += (unsigned long long)(buffer[i+j]) << j*8;
			}
			if(bytes == 4 && number == ('C' + ('A'<<8) + ('C'<<16) + ('A'<<24))) {
				//CACA seems to change it :P
				printf("Found possible signaling number %llu @ %i\n", number, i/bytes);
				i -= 2; //Offset slightly
				bytes = 6;
			}
			if(bytes == 6 && number == (0xA0UL + (0xBDUL<<8) + (0xE5UL<<16) + (0x07UL<<24) + (0x07UL<<32))) {
				printf("Found possible signaling number %llu @ %i\n", number, i/bytes);
				bytes = 8;
			}
			if( !signalsOnly ) {
				printf("%i: %llu (%i-bit)\n", i/bytes + 1, number, bytes * 8);
			}
		}
	}
	printf("\nRead %i %i-bit numbers from %s\n", i/bytes, bytes * 8, argv[1]);

	free(buffer);
	return 0;
}

If anyone's interested in compiling and running it, here's what you should know:
It can compare two different files, or take one individually. The first argument must be the name of a file. Other acceptable arguments (all optional) are:

• --bytes <number> Read the numbers as being <number> bytes wide (defaults to 4)
• --numbers <number> Stop after reading <number> numbers from the file (defaults to reading the whole file)
• --compare <filename> Compare the file specified as the first argument with <filename> by showing the differences between the numbers
• --signals Don't show every number, just those that have been programmed in as "signalling numbers" to change the number width

At the moment, the only two signalling numbers are "CACA" (1094926659) to switch from four-byte numbers to six-byte and 30197267872 to switch from six-byte to eight-byte. The former works in every file, but the latter works only in Whale_05.gpt, meaning that the files use some other way to signal a change in number size.

I was looking back through the archives and noticed CheatCat and LunaVorax were discussing the use of a disassembler on Rayman 2 back in 2009. I think that could still be a viable option, unless it gets us into trouble (of which there is a slim chance).

EDIT: Here's what I got from Whale_05.gpt. I feel I may be on a wild goose chase here.

Cairnie wrote:Well that certainly looks thrown together in an hour or so doesn't it? Otherwise very nice find!

Master wrote:Not sure I follow, are you saying that there's some GT3 code within Rayman 3?