325 lines
8.7 KiB
C
325 lines
8.7 KiB
C
|
|
#include "fileio.h"
|
|
#include "resource.h"
|
|
#include "sys.h"
|
|
#include "unpack.h"
|
|
#include "util.h"
|
|
|
|
struct resource_data_t g_res;
|
|
|
|
void res_init(int vga_size) {
|
|
static const int SQL_SIZE = 640 * 25;
|
|
g_res.sql = (uint8_t *)malloc(SQL_SIZE);
|
|
if (!g_res.sql) {
|
|
print_error("Failed to allocate sql buffer, %d bytes", SQL_SIZE);
|
|
}
|
|
static const int SPR_SQV_SIZE = 64000;
|
|
g_res.spr_sqv = (uint8_t *)malloc(SPR_SQV_SIZE);
|
|
if (!g_res.spr_sqv) {
|
|
print_error("Failed to allocate sprite buffer, %d bytes", SPR_SQV_SIZE);
|
|
}
|
|
static const int AVT_SQV_SIZE = 437 * 16;
|
|
g_res.avt_sqv = (uint8_t *)malloc(AVT_SQV_SIZE);
|
|
if (!g_res.avt_sqv) {
|
|
print_error("Failed to allocate avt buffer, %d bytes", AVT_SQV_SIZE);
|
|
}
|
|
const int tmp_size = 32000 + vga_size;
|
|
g_res.tmp = (uint8_t *)malloc(tmp_size);
|
|
if (!g_res.tmp) {
|
|
print_error("Failed to allocate tmp buffer, %d bytes", tmp_size);
|
|
}
|
|
g_res.vga = (uint8_t *)malloc(vga_size);
|
|
if (!g_res.vga) {
|
|
print_error("Failed to allocate vga buffer, %d bytes", vga_size);
|
|
}
|
|
static const int TILES_SIZE = 640 * 200;
|
|
g_res.tiles = (uint8_t *)malloc(TILES_SIZE);
|
|
if (!g_res.tiles) {
|
|
print_error("Failed to allocate tiles buffer, %d bytes", TILES_SIZE);
|
|
}
|
|
static const char *filename = "sound";
|
|
if (fio_exists(filename)) {
|
|
g_res.snd = (uint8_t *)malloc(SOUND_SIZE);
|
|
if (!g_res.snd) {
|
|
print_warning("Failed to allocate sound buffer, %d bytes", SOUND_SIZE);
|
|
} else {
|
|
read_file(filename, g_res.snd, SOUND_SIZE);
|
|
}
|
|
}
|
|
if (fio_exists("demomag.sql")) {
|
|
g_res.flags = RESOURCE_FLAGS_DEMO;
|
|
}
|
|
}
|
|
|
|
void res_fini() {
|
|
free(g_res.sql);
|
|
g_res.sql = 0;
|
|
free(g_res.spr_sqv);
|
|
g_res.spr_sqv = 0;
|
|
free(g_res.avt_sqv);
|
|
g_res.avt_sqv = 0;
|
|
free(g_res.tmp);
|
|
g_res.tmp = 0;
|
|
free(g_res.vga);
|
|
g_res.vga = 0;
|
|
free(g_res.tiles);
|
|
g_res.tiles = 0;
|
|
free(g_res.snd);
|
|
g_res.snd = 0;
|
|
}
|
|
|
|
int read_file(const char *filename, uint8_t *dst, int size) {
|
|
const int f = fio_open(filename, 1);
|
|
const int filesize = fio_size(f);
|
|
if (size > 0 && size != filesize) {
|
|
print_error("Unexpected '%s' file size %d (%d)", filename, filesize, size);
|
|
} else if (fio_read(f, dst, filesize) != filesize) {
|
|
print_error("Failed to read %d bytes from file '%s'", filesize, filename);
|
|
}
|
|
fio_close(f);
|
|
return filesize;
|
|
}
|
|
|
|
int read_compressed_file(const char *filename, uint8_t *dst) {
|
|
return unpack(filename, dst);
|
|
}
|
|
|
|
static void decode_bitplane_scanline(const uint8_t *src, int depth, int w, uint8_t *dst) {
|
|
const int plane_size = w / depth;
|
|
for (int x = 0; x < plane_size; ++x) {
|
|
for (int i = 0; i < 8; ++i) {
|
|
int color = 0;
|
|
const int mask = 1 << (7 - i);
|
|
for (int bit = 0; bit < depth; ++bit) {
|
|
if (src[bit * plane_size] & mask) {
|
|
color |= 1 << bit;
|
|
}
|
|
}
|
|
dst[i] = color;
|
|
}
|
|
++src;
|
|
dst += 8;
|
|
}
|
|
}
|
|
|
|
static void load_iff(const uint8_t *data, uint32_t size, uint8_t *dst, int dst_pitch) {
|
|
print_debug(DBG_RESOURCE, "load_iff size %d", size);
|
|
if (data && memcmp(data, "FORM", 4) == 0) {
|
|
int offset = 12;
|
|
while (offset < size) {
|
|
const uint8_t *buf = data + offset;
|
|
const int len = (READ_BE_UINT32(buf + 4) + 1) & ~1;
|
|
print_debug(DBG_RESOURCE, "tag '%c%c%c%c' len %d", buf[0], buf[1], buf[2], buf[3], len);
|
|
if (memcmp(buf, "BMHD", 4) == 0) {
|
|
buf += 8;
|
|
const int w = READ_BE_UINT16(buf);
|
|
const int h = READ_BE_UINT16(buf + 2);
|
|
const int planes = buf[8];
|
|
const int compression = buf[10];
|
|
print_debug(DBG_RESOURCE, "w %d h %d planes %d compression %d", w, h, planes, compression);
|
|
if (w != 320 || h < 200) {
|
|
print_error("Unhandled LBM dimensions %d,%d", w, h);
|
|
return;
|
|
}
|
|
if (planes != 4) {
|
|
print_error("Unhandled LBM planes count %d", planes);
|
|
return;
|
|
}
|
|
if (compression != 1) {
|
|
print_error("Unhandled LBM compression %d", compression);
|
|
return;
|
|
}
|
|
} else if (memcmp(buf, "CMAP", 4) == 0) {
|
|
buf += 8;
|
|
for (int i = 0; i < len; ++i) {
|
|
g_res.palette[i] = buf[i];
|
|
}
|
|
} else if (memcmp(buf, "BODY", 4) == 0) {
|
|
buf += 8;
|
|
int offset = 0;
|
|
int i = 0;
|
|
int y = 0;
|
|
uint8_t scanline[160];
|
|
while (i < len && offset < 32000) {
|
|
int code = (int8_t)buf[i++];
|
|
if (code != -128) {
|
|
if (code < 0) {
|
|
code = 1 - code;
|
|
memset(scanline + offset % 160, buf[i], code);
|
|
++i;
|
|
} else {
|
|
++code;
|
|
memcpy(scanline + offset % 160, buf + i, code);
|
|
i += code;
|
|
}
|
|
offset += code;
|
|
if ((offset % 160) == 0) {
|
|
decode_bitplane_scanline(scanline, 4, 160, dst + y * dst_pitch);
|
|
++y;
|
|
}
|
|
}
|
|
|
|
}
|
|
print_debug(DBG_RESOURCE, "scanlines %d", y);
|
|
}
|
|
offset += 8 + len;
|
|
}
|
|
}
|
|
}
|
|
|
|
void load_avt(const char *filename, uint8_t *dst, int offset) {
|
|
read_compressed_file(filename, dst);
|
|
const uint8_t *ptr = dst;
|
|
const int count = READ_LE_UINT16(ptr); ptr += 6;
|
|
print_debug(DBG_RESOURCE, "avt count %d", count);
|
|
for (int i = 0; i < count; ++i) {
|
|
g_res.avt[offset + i] = ptr;
|
|
ptr += 132;
|
|
}
|
|
g_res.avt_count = count;
|
|
}
|
|
|
|
static const uint8_t *trigger_lookup_table1(uint8_t num) {
|
|
extern const uint8_t *level_triggersdata_3356[];
|
|
assert(num < 4);
|
|
return level_triggersdata_3356[num];
|
|
}
|
|
|
|
static const uint8_t *trigger_lookup_table2(uint8_t num) {
|
|
if (num == 255) {
|
|
return 0;
|
|
}
|
|
extern uint8_t *level_tilesdata_1e8c[];
|
|
if (num < 128) {
|
|
assert(num < 86);
|
|
return level_tilesdata_1e8c[num];
|
|
}
|
|
extern uint8_t *level_tilesdata_1fe8[];
|
|
num -= 128;
|
|
assert(num < 17);
|
|
return level_tilesdata_1fe8[num];
|
|
}
|
|
|
|
static const uint8_t *trigger_lookup_table3(uint8_t num) {
|
|
if (num == 255) {
|
|
return 0;
|
|
}
|
|
extern const uint8_t *level_triggersdata_2030[];
|
|
assert(num < 61);
|
|
return level_triggersdata_2030[num];
|
|
}
|
|
|
|
void load_bin(const char *filename) {
|
|
uint8_t bin[MAX_TRIGGERS * 10];
|
|
read_file(filename, bin, MAX_TRIGGERS * 10);
|
|
const uint8_t *p = bin;
|
|
for (int i = 0; i < MAX_TRIGGERS; ++i) {
|
|
struct trigger_t *t = &g_res.triggers[i];
|
|
t->tile_type = p[0];
|
|
t->tile_flags = p[1];
|
|
t->op_func = p[2];
|
|
t->op_table1 = trigger_lookup_table1(p[3]);
|
|
t->op_table2 = trigger_lookup_table2(p[4]);
|
|
t->unk10 = p[5];
|
|
t->op_table3 = trigger_lookup_table3(p[6]);
|
|
t->unk16 = p[7];
|
|
t->tile_index = p[8];
|
|
t->foreground_tile_num = p[9];
|
|
p += 10;
|
|
}
|
|
}
|
|
|
|
void load_blk(const char *filename) {
|
|
read_file(filename, g_res.tiles, 256 * 16 * 8);
|
|
}
|
|
|
|
void load_ck(const char *filename, uint16_t offset) {
|
|
const int size = read_compressed_file(filename, g_res.tmp);
|
|
switch (offset) {
|
|
case 0x6000: // page3
|
|
offset = 0;
|
|
break;
|
|
case 0x8000: // page4
|
|
offset = 320;
|
|
break;
|
|
default:
|
|
print_error("Unexpected offset 0x%x in load_ck()", offset);
|
|
break;
|
|
}
|
|
load_iff(g_res.tmp, size, g_res.tiles + offset, 640);
|
|
g_sys.set_screen_palette(g_res.palette, 16);
|
|
}
|
|
|
|
void load_img(const char *filename, int screen_w) {
|
|
int size;
|
|
const char *ext = strrchr(filename, '.');
|
|
if (ext && strcmp(ext + 1, "lbm") == 0) {
|
|
size = read_file(filename, g_res.tmp, 0);
|
|
} else {
|
|
size = read_compressed_file(filename, g_res.tmp);
|
|
}
|
|
assert(size <= 32000);
|
|
load_iff(g_res.tmp, size, g_res.tmp + 32000, screen_w);
|
|
g_sys.set_screen_palette(g_res.palette, 16);
|
|
g_sys.update_screen(g_res.tmp + 32000, 0);
|
|
memcpy(g_res.vga, g_res.tmp + 32000, 64000);
|
|
}
|
|
|
|
void load_m(const char *filename) {
|
|
const int filesize = read_file(filename, g_res.tmp, 0);
|
|
const int count = READ_BE_UINT16(g_res.tmp);
|
|
assert(filesize == 2 + count * 32);
|
|
// 1-bit 16x16 mask
|
|
}
|
|
|
|
static int load_spr_helper(int offset, const uint8_t *ptr, uint16_t (*read16)(const uint8_t *), int depth) {
|
|
const int count = read16(ptr); ptr += 6;
|
|
print_debug(DBG_RESOURCE, "spr count %d", count);
|
|
assert(offset + count <= MAX_SPR_FRAMES);
|
|
for (int i = 0; i < count; ++i) {
|
|
g_res.spr_frames[offset + i] = ptr;
|
|
const int h = read16(ptr - 4);
|
|
const int w = read16(ptr - 2);
|
|
assert((w & 3) == 0);
|
|
const int size = h * w * depth / 8;
|
|
print_debug(DBG_RESOURCE, "sprite %d, dim %d,%d size %d", i, w, h, size);
|
|
ptr += size + 4;
|
|
}
|
|
return count;
|
|
}
|
|
|
|
void load_spr(const char *filename, uint8_t *dst, int offset) {
|
|
read_file(filename, dst, 0);
|
|
// player sprites use 8 colors
|
|
const int depth = (offset == 0) ? 3 : 4;
|
|
const int count = load_spr_helper(offset, dst, READ_BE_UINT16, depth);
|
|
g_res.spr_count = offset + count;
|
|
// convert to little endian
|
|
uint8_t *ptr = dst;
|
|
for (int i = 0; i < count; ++i) {
|
|
const int h = READ_BE_UINT16(ptr + 2);
|
|
ptr[2] = h;
|
|
ptr[3] = 0;
|
|
const int w = READ_BE_UINT16(ptr + 4);
|
|
ptr[4] = w;
|
|
ptr[5] = 0;
|
|
assert((w & 3) == 0);
|
|
const int size = h * w * depth / 8;
|
|
ptr += size + 4;
|
|
}
|
|
}
|
|
|
|
void load_sqv(const char *filename, uint8_t *dst, int offset) {
|
|
read_compressed_file(filename, dst);
|
|
const int count = load_spr_helper(offset, dst, READ_LE_UINT16, 4);
|
|
g_res.spr_count = offset + count;
|
|
}
|
|
|
|
void load_sql(const char *filename) {
|
|
read_compressed_file(filename, g_res.sql);
|
|
}
|
|
|
|
uint8_t *lookup_sql(int x, int y) {
|
|
return g_res.sql + y * 128 + x;
|
|
}
|