dan/TIC-80-guile
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bank id encoded directly to chunk

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This commit is contained in:
BADIM-PC\Vadim
2017-12-15 15:35:41 +03:00
parent 2edc203062
commit f87414d050
2 changed files with 30 additions and 44 deletions
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71
src/tic.c
View File

@@ -64,11 +64,13 @@ typedef enum
typedef struct
{
// TODO: add bank index here
ChunkType type:8;
u32 size:24;
ChunkType type:5;
u32 bank:TIC_BANK_BITS;
u32 size:16; // max chunk size is 64K
u32 temp:8;
} Chunk;
STATIC_ASSERT(tic_bank_bits, TIC_BANK_BITS == 3);
STATIC_ASSERT(tic_chunk_size, sizeof(Chunk) == 4);
STATIC_ASSERT(tic_map, sizeof(tic_map) < 1024*32);
STATIC_ASSERT(tic_sample, sizeof(tic_sample) == 66);
@@ -1598,18 +1600,6 @@ static void api_load(tic_cartridge* cart, const u8* buffer, s32 size, bool palet
#define LOAD_CHUNK(to) memcpy(&to, buffer, min(sizeof(to), chunk.size))
struct
{
s32 tiles;
s32 sprites;
s32 map;
s32 sfx;
s32 waves;
s32 tracks;
s32 patterns;
s32 code;
} bank = {0, 0, 0, 0, 0, 0, 0, 0};
while(buffer < end)
{
Chunk chunk;
@@ -1618,14 +1608,14 @@ static void api_load(tic_cartridge* cart, const u8* buffer, s32 size, bool palet
switch(chunk.type)
{
case CHUNK_TILES: LOAD_CHUNK(cart->banks[bank.tiles++].tiles); break;
case CHUNK_SPRITES: LOAD_CHUNK(cart->banks[bank.sprites++].sprites); break;
case CHUNK_MAP: LOAD_CHUNK(cart->banks[bank.map++].map); break;
case CHUNK_CODE: LOAD_CHUNK(cart->banks[bank.code++].code); break;
case CHUNK_SAMPLES: LOAD_CHUNK(cart->banks[bank.sfx++].sfx.samples); break;
case CHUNK_WAVEFORM: LOAD_CHUNK(cart->banks[bank.waves++].sfx.waveform); break;
case CHUNK_MUSIC: LOAD_CHUNK(cart->banks[bank.tracks++].music.tracks); break;
case CHUNK_PATTERNS: LOAD_CHUNK(cart->banks[bank.patterns++].music.patterns); break;
case CHUNK_TILES: LOAD_CHUNK(cart->banks[chunk.bank].tiles); break;
case CHUNK_SPRITES: LOAD_CHUNK(cart->banks[chunk.bank].sprites); break;
case CHUNK_MAP: LOAD_CHUNK(cart->banks[chunk.bank].map); break;
case CHUNK_CODE: LOAD_CHUNK(cart->banks[chunk.bank].code); break;
case CHUNK_SAMPLES: LOAD_CHUNK(cart->banks[chunk.bank].sfx.samples); break;
case CHUNK_WAVEFORM: LOAD_CHUNK(cart->banks[chunk.bank].sfx.waveform); break;
case CHUNK_MUSIC: LOAD_CHUNK(cart->banks[chunk.bank].music.tracks); break;
case CHUNK_PATTERNS: LOAD_CHUNK(cart->banks[chunk.bank].music.patterns); break;
case CHUNK_PALETTE:
if(palette)
LOAD_CHUNK(cart->palette);
@@ -1638,11 +1628,6 @@ static void api_load(tic_cartridge* cart, const u8* buffer, s32 size, bool palet
}
buffer += chunk.size;
// check banks overflow
for(s32 i = 0; i < sizeof bank / sizeof(s32); i++)
if(((s32*)&bank)[i] >= TIC_BANKS)
return;
}
#undef LOAD_CHUNK
@@ -1665,11 +1650,11 @@ static s32 calcBufferSize(const void* buffer, s32 size)
return size;
}
static u8* saveFixedChunk(u8* buffer, ChunkType type, const void* from, s32 size)
static u8* saveFixedChunk(u8* buffer, ChunkType type, const void* from, s32 size, s32 bank)
{
if(size)
{
Chunk chunk = {type, size};
Chunk chunk = {.type = type, .bank = bank, .size = size};
memcpy(buffer, &chunk, sizeof(Chunk));
buffer += sizeof(Chunk);
memcpy(buffer, from, size);
@@ -1679,33 +1664,33 @@ static u8* saveFixedChunk(u8* buffer, ChunkType type, const void* from, s32 size
return buffer;
}
static u8* saveChunk(u8* buffer, ChunkType type, const void* from, s32 size)
static u8* saveChunk(u8* buffer, ChunkType type, const void* from, s32 size, s32 bank)
{
s32 chunkSize = calcBufferSize(from, size);
return saveFixedChunk(buffer, type, from, chunkSize);
return saveFixedChunk(buffer, type, from, chunkSize, bank);
}
static s32 api_save(const tic_cartridge* cart, u8* buffer)
{
u8* start = buffer;
#define SAVE_CHUNK(id, from) saveChunk(buffer, id, &from, sizeof(from))
#define SAVE_CHUNK(ID, FROM, BANK) saveChunk(buffer, ID, &FROM, sizeof(FROM), BANK)
for(s32 i = 0; i < TIC_BANKS; i++)
{
buffer = SAVE_CHUNK(CHUNK_TILES, cart->banks[i].tiles);
buffer = SAVE_CHUNK(CHUNK_SPRITES, cart->banks[i].sprites);
buffer = SAVE_CHUNK(CHUNK_MAP, cart->banks[i].map);
buffer = SAVE_CHUNK(CHUNK_CODE, cart->banks[i].code);
buffer = SAVE_CHUNK(CHUNK_SAMPLES, cart->banks[i].sfx.samples);
buffer = SAVE_CHUNK(CHUNK_WAVEFORM, cart->banks[i].sfx.waveform);
buffer = SAVE_CHUNK(CHUNK_PATTERNS, cart->banks[i].music.patterns);
buffer = SAVE_CHUNK(CHUNK_MUSIC, cart->banks[i].music.tracks);
buffer = SAVE_CHUNK(CHUNK_TILES, cart->banks[i].tiles, i);
buffer = SAVE_CHUNK(CHUNK_SPRITES, cart->banks[i].sprites, i);
buffer = SAVE_CHUNK(CHUNK_MAP, cart->banks[i].map, i);
buffer = SAVE_CHUNK(CHUNK_CODE, cart->banks[i].code, i);
buffer = SAVE_CHUNK(CHUNK_SAMPLES, cart->banks[i].sfx.samples, i);
buffer = SAVE_CHUNK(CHUNK_WAVEFORM, cart->banks[i].sfx.waveform, i);
buffer = SAVE_CHUNK(CHUNK_PATTERNS, cart->banks[i].music.patterns, i);
buffer = SAVE_CHUNK(CHUNK_MUSIC, cart->banks[i].music.tracks, i);
}
buffer = SAVE_CHUNK(CHUNK_PALETTE, cart->palette);
buffer = saveFixedChunk(buffer, CHUNK_COVER, cart->cover.data, cart->cover.size);
buffer = SAVE_CHUNK(CHUNK_PALETTE, cart->palette, 0);
buffer = saveFixedChunk(buffer, CHUNK_COVER, cart->cover.data, cart->cover.size, 0);
#undef SAVE_CHUNK

3
src/tic.h
View File

@@ -107,7 +107,8 @@
#define TIC_CODE_SIZE (0x10000)
#define TIC_BANKS 8
#define TIC_BANK_BITS 3
#define TIC_BANKS (1 << TIC_BANK_BITS)
#define SFX_NOTES {"C-", "C#", "D-", "D#", "E-", "F-", "F#", "G-", "G#", "A-", "A#", "B-"}