wuxu/balatro-gba-chinese-jocker-descriptions
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Add Chinese text rendering support

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Extend the bitmap font pipeline with the Chinese Joker glyph subset and encode supported UTF-8 text for Tonc TTE. Move the affine map clear of the expanded font, add a compile-time VRAM overlap guard, and cover every custom glyph with host tests.
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wuxu
2026-07-19 11:35:14 +08:00
parent 7a5a4a1276
commit c7ef3c0047
13 changed files with 583 additions and 15 deletions
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font/FUSION_PIXEL_FONT_OFL.txt
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Fusion Pixel Font
https://github.com/TakWolf/fusion-pixel-font
Copyright (c) 2022, TakWolf (https://takwolf.com).
This Font Software is licensed under the SIL Open Font License, Version 1.1.
This license is copied below, and is also available with a FAQ at:
https://openfontlicense.org
-----------------------------------------------------------
SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
-----------------------------------------------------------
PREAMBLE
The goals of the Open Font License (OFL) are to stimulate worldwide
development of collaborative font projects, to support the font creation
efforts of academic and linguistic communities, and to provide a free and
open framework in which fonts may be shared and improved in partnership
with others.
The OFL allows the licensed fonts to be used, studied, modified and
redistributed freely as long as they are not sold by themselves. The
fonts, including any derivative works, can be bundled, embedded,
redistributed and/or sold with any software provided that any reserved
names are not used by derivative works. The fonts and derivatives,
however, cannot be released under any other type of license. The
requirement for fonts to remain under this license does not apply
to any document created using the fonts or their derivatives.
DEFINITIONS
"Font Software" refers to the set of files released by the Copyright
Holder(s) under this license and clearly marked as such. This may
include source files, build scripts and documentation.
"Reserved Font Name" refers to any names specified as such after the
copyright statement(s).
"Original Version" refers to the collection of Font Software components as
distributed by the Copyright Holder(s).
"Modified Version" refers to any derivative made by adding to, deleting,
or substituting -- in part or in whole -- any of the components of the
Original Version, by changing formats or by porting the Font Software to a
new environment.
"Author" refers to any designer, engineer, programmer, technical
writer or other person who contributed to the Font Software.
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Permission is hereby granted, free of charge, to any person obtaining
a copy of the Font Software, to use, study, copy, merge, embed, modify,
redistribute, and sell modified and unmodified copies of the Font
Software, subject to the following conditions:
1) Neither the Font Software nor any of its individual components,
in Original or Modified Versions, may be sold by itself.
2) Original or Modified Versions of the Font Software may be bundled,
redistributed and/or sold with any software, provided that each copy
contains the above copyright notice and this license. These can be
included either as stand-alone text files, human-readable headers or
in the appropriate machine-readable metadata fields within text or
binary files as long as those fields can be easily viewed by the user.
3) No Modified Version of the Font Software may use the Reserved Font
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4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
Software shall not be used to promote, endorse or advertise any
Modified Version, except to acknowledge the contribution(s) of the
Copyright Holder(s) and the Author(s) or with their explicit written
permission.
5) The Font Software, modified or unmodified, in part or in whole,
must be distributed entirely under this license, and must not be
distributed under any other license. The requirement for fonts to
remain under this license does not apply to any document created using
the Font Software.
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This license becomes null and void if any of the above conditions are
not met.
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THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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font/gbalatro_sys8.png
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include/chinese_text.h
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/**
* @file chinese_text.h
* @brief UTF-8 conversion helpers for the extended TTE font.
*/
#ifndef CHINESE_TEXT_H
#define CHINESE_TEXT_H
#include <stddef.h>
/**
* @brief Map supported UTF-8 Chinese text to valid UTF-8 sequences for custom TTE glyphs.
*
* ASCII bytes, including TTE formatting tags, are copied unchanged. Unsupported Unicode
* characters are replaced with '?'. Custom glyph IDs are emitted as UTF-8 because Tonc TTE
* decodes every byte above 0x7F as part of a UTF-8 sequence.
*
* @return Number of encoded bytes, excluding the null terminator.
*/
size_t chinese_text_encode(const char* utf8, char* output, size_t output_size);
#endif // CHINESE_TEXT_H
include/def_chinese_glyph_table.h
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// Ordered glyphs appended after ASCII code point 127 in gbalatro_sys8.png.
CHINESE_GLYPH(0x5C0F) // 小
CHINESE_GLYPH(0x4E11) // 丑
CHINESE_GLYPH(0x724C) // 牌
CHINESE_GLYPH(0x6C49) // 汉
CHINESE_GLYPH(0x5316) // 化
CHINESE_GLYPH(0x9884) // 预
CHINESE_GLYPH(0x89C8) // 览
CHINESE_GLYPH(0x534A) // 半
CHINESE_GLYPH(0x5F20) // 张
CHINESE_GLYPH(0x6050) // 恐
CHINESE_GLYPH(0x6016) // 怖
CHINESE_GLYPH(0x9762) // 面
CHINESE_GLYPH(0x5B54) // 孔
CHINESE_GLYPH(0x5982) // 如
CHINESE_GLYPH(0x679C) // 果
CHINESE_GLYPH(0x51FA) // 出
CHINESE_GLYPH(0x4E0D) // 不
CHINESE_GLYPH(0x8D85) // 超
CHINESE_GLYPH(0x8FC7) // 过
CHINESE_GLYPH(0x6253) // 打
CHINESE_GLYPH(0x7684) // 的
CHINESE_GLYPH(0x4EBA) // 人
CHINESE_GLYPH(0x5934) // 头
CHINESE_GLYPH(0x8BA1) // 计
CHINESE_GLYPH(0x5206) // 分
CHINESE_GLYPH(0x65F6) // 时
CHINESE_GLYPH(0x7ED9) // 给
CHINESE_GLYPH(0x4E88) // 予
CHINESE_GLYPH(0x500D) // 倍
CHINESE_GLYPH(0x7387) // 率
CHINESE_GLYPH(0x7B79) // 筹
CHINESE_GLYPH(0x7801) // 码
CHINESE_GLYPH(0x5DE6) // 左
CHINESE_GLYPH(0x53F3) // 右
CHINESE_GLYPH(0x5207) // 切
CHINESE_GLYPH(0x6362) // 换
CHINESE_GLYPH(0x52A8) // 动
CHINESE_GLYPH(0x753B) // 画
CHINESE_GLYPH(0x4E3B) // 主
CHINESE_GLYPH(0x83DC) // 菜
CHINESE_GLYPH(0x5355) // 单
CHINESE_GLYPH(0x4E00) // 一
CHINESE_GLYPH(0x4E09) // 三
CHINESE_GLYPH(0x4E0B) // 下
CHINESE_GLYPH(0x4E24) // 两
CHINESE_GLYPH(0x4E2A) // 个
CHINESE_GLYPH(0x4E2D) // 中
CHINESE_GLYPH(0x4E3A) // 为
CHINESE_GLYPH(0x4E8E) // 于
CHINESE_GLYPH(0x4F4D) // 位
CHINESE_GLYPH(0x4F4E) // 低
CHINESE_GLYPH(0x4F59) // 余
CHINESE_GLYPH(0x4F8B) // 例
CHINESE_GLYPH(0x4FA7) // 侧
CHINESE_GLYPH(0x5076) // 偶
CHINESE_GLYPH(0x518D) // 再
CHINESE_GLYPH(0x51E0) // 几
CHINESE_GLYPH(0x5230) // 到
CHINESE_GLYPH(0x5236) // 制
CHINESE_GLYPH(0x524D) // 前
CHINESE_GLYPH(0x5269) // 剩
CHINESE_GLYPH(0x529B) // 力
CHINESE_GLYPH(0x52A0) // 加
CHINESE_GLYPH(0x5305) // 包
CHINESE_GLYPH(0x53D1) // 发
CHINESE_GLYPH(0x53EF) // 可
CHINESE_GLYPH(0x5408) // 合
CHINESE_GLYPH(0x540C) // 同
CHINESE_GLYPH(0x540E) // 后
CHINESE_GLYPH(0x542B) // 含
CHINESE_GLYPH(0x548C) // 和
CHINESE_GLYPH(0x56DB) // 四
CHINESE_GLYPH(0x56DE) // 回
CHINESE_GLYPH(0x5747) // 均
CHINESE_GLYPH(0x590D) // 复
CHINESE_GLYPH(0x5916) // 外
CHINESE_GLYPH(0x5947) // 奇
CHINESE_GLYPH(0x5B50) // 子
CHINESE_GLYPH(0x5BF9) // 对
CHINESE_GLYPH(0x5C06) // 将
CHINESE_GLYPH(0x5F03) // 弃
CHINESE_GLYPH(0x5F53) // 当
CHINESE_GLYPH(0x6210) // 成
CHINESE_GLYPH(0x6216) // 或
CHINESE_GLYPH(0x6240) // 所
CHINESE_GLYPH(0x624B) // 手
CHINESE_GLYPH(0x62E5) // 拥
CHINESE_GLYPH(0x62EC) // 括
CHINESE_GLYPH(0x63A5) // 接
CHINESE_GLYPH(0x6570) // 数
CHINESE_GLYPH(0x65B9) // 方
CHINESE_GLYPH(0x65E0) // 无
CHINESE_GLYPH(0x6700) // 最
CHINESE_GLYPH(0x6709) // 有
CHINESE_GLYPH(0x672C) // 本
CHINESE_GLYPH(0x673A) // 机
CHINESE_GLYPH(0x6761) // 条
CHINESE_GLYPH(0x6765) // 来
CHINESE_GLYPH(0x6843) // 桃
CHINESE_GLYPH(0x6885) // 梅
CHINESE_GLYPH(0x69FD) // 槽
CHINESE_GLYPH(0x6B21) // 次
CHINESE_GLYPH(0x6BCF) // 每
CHINESE_GLYPH(0x70B9) // 点
CHINESE_GLYPH(0x7247) // 片
CHINESE_GLYPH(0x7528) // 用
CHINESE_GLYPH(0x7531) // 由
CHINESE_GLYPH(0x7A7A) // 空
CHINESE_GLYPH(0x7B2C) // 第
CHINESE_GLYPH(0x7EA2) // 红
CHINESE_GLYPH(0x7EC4) // 组
CHINESE_GLYPH(0x80FD) // 能
CHINESE_GLYPH(0x8272) // 色
CHINESE_GLYPH(0x82B1) // 花
CHINESE_GLYPH(0x89C6) // 视
CHINESE_GLYPH(0x89E6) // 触
CHINESE_GLYPH(0x95F4) // 间
CHINESE_GLYPH(0x968F) // 随
CHINESE_GLYPH(0x9694) // 隔
CHINESE_GLYPH(0x987A) // 顺
CHINESE_GLYPH(0x989D) // 额
CHINESE_GLYPH(0x9ED1) // 黑
CHINESE_GLYPH(0x3001) // 、
include/gbalatro_sys8.h
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@@ -1,9 +1,9 @@
#ifndef GBALATRO_SYS8_FONT_H
#define GBALATRO_SYS8_FONT_H
#include <tonc.h>
extern const TFont gbalatro_sys8Font;
extern const unsigned int gbalatro_sys8Glyphs[192];
#endif
#ifndef GBALATRO_SYS8_H
#define GBALATRO_SYS8_H
#include <tonc.h>
extern const TFont gbalatro_sys8Font;
extern const unsigned int gbalatro_sys8Glyphs[];
#endif
include/graphic_utils.h
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@@ -32,7 +32,7 @@
#define MAIN_BG_CBB 1
#define TTE_SBB 30
#define TTE_CBB 0
#define AFFINE_BG_SBB 2
#define AFFINE_BG_SBB 4
#define AFFINE_BG_CBB 2
#define PAL_ROW_LEN 16
#define NUM_PALETTES 16
scripts/generate_chinese_joker_font.py
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#!/usr/bin/env python3
"""Append the Chinese Joker-description glyph subset to the project's 8x8 ASCII font."""
from argparse import ArgumentParser
from pathlib import Path
import re
from PIL import Image, ImageDraw, ImageFont
ASCII_FONT_HEIGHT = 48
CELL_SIZE = 8
GLYPHS_PER_ROW = 16
def read_codepoints(table_path: Path) -> list[int]:
table = table_path.read_text(encoding="utf-8")
return [int(value, 16) for value in re.findall(r"CHINESE_GLYPH\(0x([0-9A-Fa-f]+)\)", table)]
def main() -> None:
parser = ArgumentParser()
parser.add_argument("--font", required=True, help="Fusion Pixel Font 8px zh_hans TTF")
parser.add_argument("--table", default="include/def_chinese_glyph_table.h")
parser.add_argument("--image", default="font/gbalatro_sys8.png")
args = parser.parse_args()
image_path = Path(args.image)
base = Image.open(image_path).convert("RGB").crop((0, 0, 128, ASCII_FONT_HEIGHT))
codepoints = read_codepoints(Path(args.table))
extra_rows = (len(codepoints) + GLYPHS_PER_ROW - 1) // GLYPHS_PER_ROW
output = Image.new("RGB", (128, ASCII_FONT_HEIGHT + extra_rows * CELL_SIZE), "white")
output.paste(base, (0, 0))
draw = ImageDraw.Draw(output)
font = ImageFont.truetype(args.font, CELL_SIZE)
for index, codepoint in enumerate(codepoints):
x = (index % GLYPHS_PER_ROW) * CELL_SIZE
y = ASCII_FONT_HEIGHT + (index // GLYPHS_PER_ROW) * CELL_SIZE
draw.text((x, y - 1), chr(codepoint), font=font, fill="black")
output.save(image_path, optimize=True)
print(f"Appended {len(codepoints)} Chinese glyphs to {image_path}")
if __name__ == "__main__":
main()
scripts/generate_font.py
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@@ -5,7 +5,6 @@ import argparse
CHAR_WIDTH = 8
CHAR_HEIGHT = 8
NUM_VERT_CHARS = 6
NUM_HORZ_CHARS = 16
WORD_SIZE = 32
@@ -48,8 +47,14 @@ img = img.convert("P")
img = img.convert('1')
img = ImageOps.invert(img)
if img.width != NUM_HORZ_CHARS * CHAR_WIDTH or img.height % CHAR_HEIGHT != 0:
raise ValueError("font image must be 128px wide and a multiple of 8px high")
num_vert_chars = img.height // CHAR_HEIGHT
num_chars = num_vert_chars * NUM_HORZ_CHARS
glyphs = []
for char_y in range(NUM_VERT_CHARS):
for char_y in range(num_vert_chars):
for char_x in range(NUM_HORZ_CHARS):
# Get the 8x8 crop area at our current character in the image
pix_x = char_x * CHAR_WIDTH
@@ -86,7 +91,7 @@ with open(out_path, "w") as out:
.global gbalatro_sys8Font
gbalatro_sys8Font:
.word gbalatro_sys8Glyphs, 0, 0
.hword 32, 96
.hword 32, %d
.byte 8, 8
.byte 8, 8
.hword 8
@@ -94,9 +99,9 @@ gbalatro_sys8Font:
.section .rodata
.align 2
.global gbalatro_sys8Glyphs @ 768 bytes (192 unsigned ints)
.global gbalatro_sys8Glyphs
gbalatro_sys8Glyphs:
""")
""" % num_chars)
for i, glyph in enumerate(glyphs):
if first:
source/chinese_text.c
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#include "chinese_text.h"
#include <stdint.h>
#define CHINESE_GLYPH_FIRST 128
static const uint32_t s_chinese_codepoints[] = {
#define CHINESE_GLYPH(codepoint) codepoint,
#include "def_chinese_glyph_table.h"
#undef CHINESE_GLYPH
};
_Static_assert(
sizeof(s_chinese_codepoints) / sizeof(s_chinese_codepoints[0]) <= 256 - CHINESE_GLYPH_FIRST,
"Chinese glyph table exceeds the single-byte encoding range"
);
static uint32_t decode_utf8_codepoint(const unsigned char** cursor)
{
const unsigned char* text = *cursor;
if (text[0] < 0x80)
{
*cursor += 1;
return text[0];
}
if ((text[0] & 0xE0) == 0xC0 && (text[1] & 0xC0) == 0x80)
{
*cursor += 2;
return ((uint32_t)(text[0] & 0x1F) << 6) | (text[1] & 0x3F);
}
if ((text[0] & 0xF0) == 0xE0 && (text[1] & 0xC0) == 0x80 && (text[2] & 0xC0) == 0x80)
{
*cursor += 3;
return ((uint32_t)(text[0] & 0x0F) << 12) | ((uint32_t)(text[1] & 0x3F) << 6) |
(text[2] & 0x3F);
}
*cursor += 1;
return '?';
}
static uint32_t codepoint_to_glyph(uint32_t codepoint)
{
for (size_t i = 0; i < sizeof(s_chinese_codepoints) / sizeof(s_chinese_codepoints[0]); i++)
{
if (s_chinese_codepoints[i] == codepoint)
{
return CHINESE_GLYPH_FIRST + i;
}
}
return '?';
}
static size_t encode_tte_codepoint(uint32_t codepoint, char* output, size_t output_size)
{
if (codepoint < 0x80)
{
if (output_size < 1)
{
return 0;
}
output[0] = (char)codepoint;
return 1;
}
if (codepoint <= 0x7FF)
{
if (output_size < 2)
{
return 0;
}
output[0] = (char)(0xC0 | (codepoint >> 6));
output[1] = (char)(0x80 | (codepoint & 0x3F));
return 2;
}
return 0;
}
size_t chinese_text_encode(const char* utf8, char* output, size_t output_size)
{
if (utf8 == NULL || output == NULL || output_size == 0)
{
return 0;
}
const unsigned char* cursor = (const unsigned char*)utf8;
size_t output_len = 0;
while (*cursor != '\0')
{
uint32_t codepoint = decode_utf8_codepoint(&cursor);
uint32_t tte_codepoint = codepoint < 0x80 ? codepoint : codepoint_to_glyph(codepoint);
size_t encoded_size =
encode_tte_codepoint(tte_codepoint, output + output_len, output_size - output_len - 1);
if (encoded_size == 0)
{
break;
}
output_len += encoded_size;
}
output[output_len] = '\0';
return output_len;
}
source/main.c
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@@ -25,6 +25,31 @@
#include "soundbank.h"
#include "soundbank_bin.h"
enum
{
TTE_ASCII_GLYPH_COUNT = 96,
FONT_TILES_PER_ROW = 16,
CHARBLOCK_4BPP_TILE_COUNT = 512,
SCREENBLOCK_4BPP_TILE_COUNT = 64,
CHINESE_GLYPH_COUNT = 0
#define CHINESE_GLYPH(codepoint) +1
#include "def_chinese_glyph_table.h"
#undef CHINESE_GLYPH
,
TTE_FONT_TILE_COUNT =
TTE_ASCII_GLYPH_COUNT +
((CHINESE_GLYPH_COUNT + FONT_TILES_PER_ROW - 1) / FONT_TILES_PER_ROW) * FONT_TILES_PER_ROW,
TTE_FONT_FIRST_TILE = TTE_CBB * CHARBLOCK_4BPP_TILE_COUNT,
TTE_FONT_END_TILE = TTE_FONT_FIRST_TILE + TTE_FONT_TILE_COUNT,
AFFINE_BG_MAP_FIRST_TILE = AFFINE_BG_SBB * SCREENBLOCK_4BPP_TILE_COUNT,
AFFINE_BG_MAP_END_TILE = AFFINE_BG_MAP_FIRST_TILE + SCREENBLOCK_4BPP_TILE_COUNT,
};
_Static_assert(
TTE_FONT_END_TILE <= AFFINE_BG_MAP_FIRST_TILE || AFFINE_BG_MAP_END_TILE <= TTE_FONT_FIRST_TILE,
"TTE font tiles overlap the affine background map"
);
void init()
{
rng_init();
tests/chinese_text/Makefile
+15
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@@ -0,0 +1,15 @@
CC := gcc
CFLAGS := -I../../include -I. \
-g -O3 -std=gnu23 -Wall -Werror
SRC := chinese_text_test.c \
../../source/chinese_text.c
OUT := build/chinese_text_test
$(OUT): $(SRC) | build
$(CC) $(CFLAGS) -o $@ $^
build:
mkdir -p build
clean:
rm -f $(OUT)
tests/chinese_text/chinese_text_test.c
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@@ -0,0 +1,120 @@
#include "chinese_text.h"
#include <assert.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
static const uint32_t CHINESE_CODEPOINTS[] = {
#define CHINESE_GLYPH(codepoint) codepoint,
#include "def_chinese_glyph_table.h"
#undef CHINESE_GLYPH
};
static size_t encode_utf8_codepoint(uint32_t codepoint, char output[4])
{
if (codepoint <= 0x7F)
{
output[0] = (char)codepoint;
return 1;
}
if (codepoint <= 0x7FF)
{
output[0] = (char)(0xC0 | (codepoint >> 6));
output[1] = (char)(0x80 | (codepoint & 0x3F));
return 2;
}
output[0] = (char)(0xE0 | (codepoint >> 12));
output[1] = (char)(0x80 | ((codepoint >> 6) & 0x3F));
output[2] = (char)(0x80 | (codepoint & 0x3F));
return 3;
}
static uint32_t decode_like_tonc(const unsigned char encoded[2])
{
return ((uint32_t)(encoded[0] & 0x1F) << 6) | (encoded[1] & 0x3F);
}
static void test_ascii_is_unchanged(void)
{
char output[32];
size_t output_len = chinese_text_encode("A: +20", output, sizeof(output));
assert(output_len == strlen("A: +20"));
assert(strcmp(output, "A: +20") == 0);
}
static void test_supported_chinese_uses_extended_glyphs(void)
{
char output[8];
size_t output_len = chinese_text_encode("小丑牌", output, sizeof(output));
assert(output_len == 6);
assert((unsigned char)output[0] == 0xC2);
assert((unsigned char)output[1] == 0x80);
assert((unsigned char)output[2] == 0xC2);
assert((unsigned char)output[3] == 0x81);
assert((unsigned char)output[4] == 0xC2);
assert((unsigned char)output[5] == 0x82);
assert(output[6] == '\0');
}
static void test_unsupported_unicode_becomes_question_mark(void)
{
char output[8];
size_t output_len = chinese_text_encode("龘", output, sizeof(output));
assert(output_len == 1);
assert(strcmp(output, "?") == 0);
}
static void test_all_custom_glyphs_round_trip_through_tonc_utf8(void)
{
size_t glyph_count = sizeof(CHINESE_CODEPOINTS) / sizeof(CHINESE_CODEPOINTS[0]);
assert(glyph_count <= 128);
for (size_t i = 0; i < glyph_count; i++)
{
char input[4] = {'\0'};
size_t input_len = encode_utf8_codepoint(CHINESE_CODEPOINTS[i], input);
input[input_len] = '\0';
char output[4] = {'\0'};
size_t output_len = chinese_text_encode(input, output, sizeof(output));
uint32_t expected_glyph_codepoint = 128 + i;
assert(output_len == 2);
assert(((unsigned char)output[0] & 0xE0) == 0xC0);
assert(((unsigned char)output[1] & 0xC0) == 0x80);
assert(decode_like_tonc((const unsigned char*)output) == expected_glyph_codepoint);
assert(output[2] == '\0');
}
}
static void test_small_buffer_does_not_split_utf8_sequence(void)
{
char output[4] = {'x', 'x', 'x', 'x'};
size_t output_len = chinese_text_encode("小丑牌", output, sizeof(output));
assert(output_len == 2);
assert((unsigned char)output[0] == 0xC2);
assert((unsigned char)output[1] == 0x80);
assert(output[2] == '\0');
}
int main(void)
{
test_ascii_is_unchanged();
test_supported_chinese_uses_extended_glyphs();
test_unsupported_unicode_becomes_question_mark();
test_all_custom_glyphs_round_trip_through_tonc_utf8();
test_small_buffer_does_not_split_utf8_sequence();
printf("Chinese text tests passed.\n");
return 0;
}
tests/run_tests.sh
+1
View File
@@ -17,6 +17,7 @@ run_test() {
}
run_test bitset
run_test chinese_text
run_test list
run_test pool
run_test util