This map has always been broken. This variant makes it slightly less broken (although something changed on the ceiling might prevent hiding on pixels on the slope). What will finally fix it is either moving nets closer together or adding angle bounce to hedgehogs or some other layout that prevents hiding.
/*
* OpenAL Bridge - a simple portable library for OpenAL interface
* Copyright (c) 2009 Vittorio Giovara <vittorio.giovara@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; version 2 of the License
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include "loaders.h"
#ifdef __CPLUSPLUS
extern "C" {
#endif
int load_wavpcm (const char *filename, ALenum *format, char ** data, ALsizei *bitsize, ALsizei *freq) {
WAV_header_t WAVHeader;
FILE *wavfile;
int32_t t;
uint32_t n = 0;
uint8_t sub0, sub1, sub2, sub3;
wavfile = Fopen(filename, "rb");
fread(&WAVHeader.ChunkID, sizeof(uint32_t), 1, wavfile); /*RIFF*/
fread(&WAVHeader.ChunkSize, sizeof(uint32_t), 1, wavfile);
fread(&WAVHeader.Format, sizeof(uint32_t), 1, wavfile); /*WAVE*/
#ifdef DEBUG
fprintf(stderr, "ChunkID: %X\n", ENDIAN_BIG_32(WAVHeader.ChunkID));
fprintf(stderr, "ChunkSize: %d\n", ENDIAN_LITTLE_32(WAVHeader.ChunkSize));
fprintf(stderr, "Format: %X\n", ENDIAN_BIG_32(WAVHeader.Format));
#endif
fread(&WAVHeader.Subchunk1ID, sizeof(uint32_t), 1, wavfile); /*fmt */
fread(&WAVHeader.Subchunk1Size, sizeof(uint32_t), 1, wavfile);
fread(&WAVHeader.AudioFormat, sizeof(uint16_t), 1, wavfile);
fread(&WAVHeader.NumChannels, sizeof(uint16_t), 1, wavfile);
fread(&WAVHeader.SampleRate, sizeof(uint32_t), 1, wavfile);
fread(&WAVHeader.ByteRate, sizeof(uint32_t), 1, wavfile);
fread(&WAVHeader.BlockAlign, sizeof(uint16_t), 1, wavfile);
fread(&WAVHeader.BitsPerSample, sizeof(uint16_t), 1, wavfile);
#ifdef DEBUG
fprintf(stderr, "Subchunk1ID: %X\n", ENDIAN_BIG_32(WAVHeader.Subchunk1ID));
fprintf(stderr, "Subchunk1Size: %d\n", ENDIAN_LITTLE_32(WAVHeader.Subchunk1Size));
fprintf(stderr, "AudioFormat: %d\n", ENDIAN_LITTLE_16(WAVHeader.AudioFormat));
fprintf(stderr, "NumChannels: %d\n", ENDIAN_LITTLE_16(WAVHeader.NumChannels));
fprintf(stderr, "SampleRate: %d\n", ENDIAN_LITTLE_32(WAVHeader.SampleRate));
fprintf(stderr, "ByteRate: %d\n", ENDIAN_LITTLE_32(WAVHeader.ByteRate));
fprintf(stderr, "BlockAlign: %d\n", ENDIAN_LITTLE_16(WAVHeader.BlockAlign));
fprintf(stderr, "BitsPerSample: %d\n", ENDIAN_LITTLE_16(WAVHeader.BitsPerSample));
#endif
/*remove useless header chunks by looking for the WAV_HEADER_SUBCHUNK2ID integer */
do {
t = fread(&sub0, sizeof(uint8_t), 1, wavfile);
if(sub0 == 0x64) {
t = fread(&sub1, sizeof(uint8_t), 1, wavfile);
if(sub1 == 0x61) {
t = fread(&sub2, sizeof(uint8_t), 1, wavfile);
if(sub2 == 0x74) {
t = fread(&sub3, sizeof(uint8_t), 1, wavfile);
if(sub3 == 0x61) {
WAVHeader.Subchunk2ID = WAV_HEADER_SUBCHUNK2ID;
break;
}
}
}
}
if (t <= 0) {
/*eof*/
errno = EILSEQ;
err_ret("(%s) ERROR - wrong WAV header", prog);
return AL_FALSE;
}
} while (1);
fread(&WAVHeader.Subchunk2Size, sizeof(uint32_t), 1, wavfile);
#ifdef DEBUG
fprintf(stderr, "Subchunk2ID: %X\n", ENDIAN_LITTLE_32(WAVHeader.Subchunk2ID));
fprintf(stderr, "Subchunk2Size: %d\n", ENDIAN_LITTLE_32(WAVHeader.Subchunk2Size));
#endif
*data = (char*) Malloc (sizeof(char) * ENDIAN_LITTLE_32(WAVHeader.Subchunk2Size));
/*read the actual sound data*/
do {
n += fread(&((*data)[n]), sizeof(uint8_t), 4, wavfile);
} while (n < ENDIAN_LITTLE_32(WAVHeader.Subchunk2Size));
fclose(wavfile);
#ifdef DEBUG
err_msg("(%s) INFO - WAV data loaded", prog);
#endif
/*set parameters for OpenAL*/
/*Valid formats are AL_FORMAT_MONO8, AL_FORMAT_MONO16, AL_FORMAT_STEREO8, and AL_FORMAT_STEREO16*/
if (ENDIAN_LITTLE_16(WAVHeader.NumChannels) == 1) {
if (ENDIAN_LITTLE_16(WAVHeader.BitsPerSample) == 8)
*format = AL_FORMAT_MONO8;
else {
if (ENDIAN_LITTLE_16(WAVHeader.BitsPerSample) == 16)
*format = AL_FORMAT_MONO16;
else {
errno = EILSEQ;
err_ret("(%s) ERROR - wrong WAV header [bitsample value]", prog);
return AL_FALSE;
}
}
} else {
if (ENDIAN_LITTLE_16(WAVHeader.NumChannels) == 2) {
if (ENDIAN_LITTLE_16(WAVHeader.BitsPerSample) == 8)
*format = AL_FORMAT_STEREO8;
else {
if (ENDIAN_LITTLE_16(WAVHeader.BitsPerSample) == 16)
*format = AL_FORMAT_STEREO16;
else {
errno = EILSEQ;
err_ret("(%s) ERROR - wrong WAV header [bitsample value]", prog);
return AL_FALSE;
}
}
} else {
errno = EILSEQ;
err_ret("(%s) ERROR - wrong WAV header [format value]", prog);
return AL_FALSE;
}
}
*bitsize = ENDIAN_LITTLE_32(WAVHeader.Subchunk2Size);
*freq = ENDIAN_LITTLE_32(WAVHeader.SampleRate);
return AL_TRUE;
}
int load_oggvorbis (const char *filename, ALenum *format, char **data, ALsizei *bitsize, ALsizei *freq) {
/*implementation inspired from http://www.devmaster.net/forums/showthread.php?t=1153 */
/*stream handle*/
OggVorbis_File oggStream;
/*some formatting data*/
vorbis_info *vorbisInfo;
/*length of the decoded data*/
int64_t pcm_length;
/*other vars*/
int section, result, size, endianness;
#ifdef DEBUG
int i;
/*other less useful data*/
vorbis_comment *vorbisComment;
#endif
result = ov_fopen((char*) filename, &oggStream);
if (result < 0) {
errno = EINVAL;
err_ret("(%s) ERROR - ov_fopen() failed with %X", prog, result);
ov_clear(&oggStream);
return AL_FALSE;
}
/*load OGG header and determine the decoded data size*/
vorbisInfo = ov_info(&oggStream, -1);
pcm_length = ov_pcm_total(&oggStream, -1) << vorbisInfo->channels;
#ifdef DEBUG
vorbisComment = ov_comment(&oggStream, -1);
fprintf(stderr, "Version: %d\n", vorbisInfo->version);
fprintf(stderr, "Channels: %d\n", vorbisInfo->channels);
fprintf(stderr, "Rate (Hz): %ld\n", vorbisInfo->rate);
fprintf(stderr, "Bitrate Upper: %ld\n", vorbisInfo->bitrate_upper);
fprintf(stderr, "Bitrate Nominal: %ld\n", vorbisInfo->bitrate_nominal);
fprintf(stderr, "Bitrate Lower: %ld\n", vorbisInfo->bitrate_lower);
fprintf(stderr, "Bitrate Windows: %ld\n", vorbisInfo->bitrate_window);
fprintf(stderr, "Vendor: %s\n", vorbisComment->vendor);
fprintf(stderr, "PCM data size: %lld\n", pcm_length);
fprintf(stderr, "# comment: %d\n", vorbisComment->comments);
for (i = 0; i < vorbisComment->comments; i++)
fprintf(stderr, "\tComment %d: %s\n", i, vorbisComment->user_comments[i]);
#endif
/*allocates enough room for the decoded data*/
*data = (char*) Malloc (sizeof(char) * pcm_length);
/*there *should* not be ogg at 8 bits*/
if (vorbisInfo->channels == 1)
*format = AL_FORMAT_MONO16;
else {
if (vorbisInfo->channels == 2)
*format = AL_FORMAT_STEREO16;
else {
errno = EILSEQ;
err_ret("(%s) ERROR - wrong OGG header [channel %d]", prog, vorbisInfo->channels);
ov_clear(&oggStream);
return AL_FALSE;
}
}
size = 0;
#ifdef __LITTLE_ENDIAN__
endianness = 0;
#elif __BIG_ENDIAN__
endianness = 1;
#endif
while (size < pcm_length) {
/*ov_read decodes the ogg stream and storse the pcm in data*/
result = ov_read (&oggStream, *data + size, pcm_length - size, endianness, 2, 1, §ion);
if (result > 0) {
size += result;
} else {
if (result == 0)
break;
else {
errno = EILSEQ;
err_ret("(%s) ERROR - End of file from OGG stream", prog);
ov_clear(&oggStream);
return AL_FALSE;
}
}
}
/*set the last fields*/
*bitsize = size;
*freq = vorbisInfo->rate;
/*cleaning time*/
ov_clear(&oggStream);
return AL_TRUE;
}
#ifdef __CPLUSPLUS
}
#endif