オリジナルの何かを作ってみる
前回、本の通りに作ってみたけど、なんとなく分かったような分かってないような･･･
てことで、今回から自分が思ったことを、勉強しながら少しづつ実現していこうと思います✊
先ずは「ファミコンゲーム製作入門」の本で習った範囲内で出来る事から。
今日は、画面の背景として文字を表示する を目標にします。
せっかくオリジナルで作るんだからあまり例にないものを・・
안녕하세요?（アンニョンハセヨ？） を表示してみようっと💡
ハングル文字の背景を作る
前回の記事でいうところの「① CHR（画像）を作る」で、
안녕하세요?
の6文字分の背景データを作ります。
ハングルフォントは8×8サイズだと文字が潰れて読めない感じなので･･･
ここの16×16？フォントを使わせてもらおう。
Copyright © 2017-2022, Eunbin Jeong (Dalgona.) <project-neodgm@dalgona.dev>
with reserved font name "Neo둥근모" and "NeoDunggeunmo".
8ドット×8ドットを1枚として、合計22枚必要かな？
これを見ながらテキストエディタにデータ化して行く✊
1枚目のデーターは一番左上のこの部分。（青枠部分）
ドットごとにどのパレット（色セット）を使用するか指定して行くんだけど、今回は白い部分を色1（透明）の00、黒い部分を色2の01とします。
で、この1枚分では8ドット×8ドット×2ビット（パレット情報）で128ビット（16バイト）。
本の通りCHR（キャラクター領域）を背景とキャラクター（スプライトという）で均等に扱うとすると、8KBのうち背景4KB（256枚分）、キャラクター（スプライトという）4KB（256枚分）となり、この背景の1枚目は0ビット目～128ビット目に格納される。
8KB=8192バイト=65536ビット
背景データが0～32767ビットめ
スプライトデータが32768~65536ビットめに入る。
左上から右下まで
00000000000000000000000101010100000001010000010100010100000000010001010000000001000101000000000100000101000001010000000101010100と128ビット分変換していけばいいかと思いきやそれはちがくて･･･
まず、1ドット目の00の頭の0が64ビットめに入り、後ろの0が1ビットめに入る。
2ドット目の頭の0が65ビットめに入り、後ろの0が2ビット目に入る。
というふうな順番で格納しなければいけないみたい（めんどくさい💧）
今回の場合は00か01のパレットしか使わないので64ビットめから128ビットめまでは全て0になって、
1ビットめから128ビットめまでは、白マスなら0、黒マスなら1という風になります。（今回は簡単）
つまり、
00000000000111100011001101100001011000010110000100110011000111100000000000000000000000000000000000000000000000000000000000000000となります。
っていう感じで22枚分全て変換すると（超絶めんどくさい💧）
00000000000111100011001101100001011000010110000100110011000111100000000000000000000000000000000000000000000000000000000000000000000000000001100000011000100110001001111110011000000110000001100000000000000000000000000000000000000000000000000000000000000000000000000001100000011000000110000001100000011000000110000000111111000000000000000000000000000000000000000000000000000000000000000000000000000011000000110001111100000011000111110000001100100011000000000000000000000000000000000000000000000000000000000000000000000000000000110001111111000000000001111000110011011000010110000100000000000000000000000000000000000000000000000000000000000000000000000000011000100110000001100000011000000110001001100010011111000000000000000000000000000000000000000000000000000000000000000000000000000000000000110000001100000011000000110000001100000011000000000000000000000000000000000000000000000000000000000000000000000000000011011000110110001101100011011000110110001101101111011000000000000000000000000000000000000000000000000000000000000000000000000000000000000001110001100000110000001100000011000000011000000000000000000000000000000000000000000000000000000000000000000000000000000000011111000000011000000011000000110000001100000110000000000000000000000000000000000000000000000000000000000000000000000000000000000001111100110001101100011000001100000110000001100000000000000000000000000000000000000000000000000000000000000000000000000000110000001100000011000000110000000111110000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001111100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000111100111000001100000011100000001111000000000000000000000000000000000000000000000000000000000000000000000000000000000000000011110000000111000000110000011100111100000000000000000000000000000000000000000000000000000000000000000000000000000000000001100001011000010110000100110011000111100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100110001001100010011000000110000001100000011000000000000000000000000000000000000000000000000000000000000000000000000000000000000000110000001100000111100011001101100001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000110110001101100011011000110110101101100011011000000000000000000000000000000000000000000000000000000000000000000000000000000000000011110000110000001100000011000111111100000000000000000000000000000000000000000000000000000000000000000000000000000000000000001111000000110000001100000011000011111110000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000011000000000000001100000011000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000のようになります。(´Д｀)ﾊｧ…
さらにこの2進数を4桁づつ、16進数に変換します。
| 2進数 | 16進数 |
|---|---|
| 0000 | 0 |
| 0001 | 1 |
| 0010 | 2 |
| 0011 | 3 |
| 0100 | 4 |
| 0101 | 5 |
| 0110 | 6 |
| 0111 | 7 |
| 1000 | 8 |
| 1001 | 9 |
| 1010 | A |
| 1011 | B |
| 1100 | C |
| 1101 | D |
| 1110 | E |
| 1111 | F |
2つ変換したら半角スペース1個空けて、を繰り返します。
すると、こうなりました。
00 1E 33 61 61 00 00 00 00 00 00 00 00 00 18 98 18 18 18 98 9F 00 00 00 00 00 00 00 00 00 00 0C 0C 0C 0C 0C 0C 00 00 00 00 00 00 00 00 00 36 36 36 36 36 36 F6 00 00 00 00 00 00 00 00 00 00 0F 18 30 30 30 18 00 00 00 00 00 00 00 00 00 00 F0 18 0C 0C 0C 18 00 00 00 00 00 00 00 00 00 00 7C C6 C6 0C 18 18 00 00 00 00 00 00 00 00 00 30 30 30 30 1F 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 F8 00 00 00 00 00 00 00 00 00 00 00 0F 38 30 38 0F 00 00 00 00 00 00 00 00 00 00 00 F0 1C 0C 1C F0 00 00 00 00 00 00 00 00 00 00 61 61 61 33 1E 00 00 00 00 00 00 00 00 00 00 00 98 98 98 18 18 18 00 00 00 00 00 00 00 00 00 00 0C 0C 1E 33 61 00 00 00 00 00 00 00 00 00 00 00 36 36 36 36 B6 36 00 00 00 00 00 00 00 00 00 00 0F 0C 0C 0C 7F 00 00 00 00 00 00 00 00 00 00 00 F0 30 30 30 FE 00 00 00 00 00 00 00 00 00 00 00 18 00 18 18 00 00 00 00 00 00 00 00 00 00 00 00続けて、使用しない残り490枚分 "00"で埋めます。
（" 00 00 00 00 00 00 00 00" x 490回） ← 間違えてました！
（" 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00" ×490回）
00 1E 33 61 61 61 33 1E 00 00 00 00 00 00 00 00 00 18 18 98 9F 98 18 18 00 00 00 00 00 00 00 00 00 60 60 60 60 60 60 3F 00 00 00 00 00 00 00 00 00 0C 0C 7C 0C 7C 0C 8C 00 00 00 00 00 00 00 00 00 0C 7F 00 1E 33 61 61 00 00 00 00 00 00 00 00 00 18 98 18 18 18 98 9F 00 00 00 00 00 00 00 00 00 00 0C 0C 0C 0C 0C 0C 00 00 00 00 00 00 00 00 00 36 36 36 36 36 36 F6 00 00 00 00 00 00 00 00 00 00 0F 18 30 30 30 18 00 00 00 00 00 00 00 00 00 00 F0 18 0C 0C 0C 18 00 00 00 00 00 00 00 00 00 00 7C C6 C6 0C 18 18 00 00 00 00 00 00 00 00 00 30 30 30 30 1F 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 F8 00 00 00 00 00 00 00 00 00 00 00 0F 38 30 38 0F 00 00 00 00 00 00 00 00 00 00 00 F0 1C 0C 1C F0 00 00 00 00 00 00 00 00 00 00 61 61 61 33 1E 00 00 00 00 00 00 00 00 00 00 00 98 98 98 18 18 18 00 00 00 00 00 00 00 00 00 00 0C 0C 1E 33 61 00 00 00 00 00 00 00 00 00 00 00 36 36 36 36 B6 36 00 00 00 00 00 00 00 00 00 00 0F 0C 0C 0C 7F 00 00 00 00 00 00 00 00 00 00 00 F0 30 30 30 FE 00 00 00 00 00 00 00 00 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00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 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00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00のようになります。(´Д｀)ﾊｧ…
で、このテキストファイルを「original.txt」「chr.txt」という名前で保存します。
コマンドプロンプトを開き、「original.txt」「chr.txt」のあるディレクトリに移動（cdコマンド）してから、
C:\Users\taro>cd /d A:\Dev\NES\originalA:\Dev\NES\original>certutil -f -decodehex original.txt original.chrA:\Dev\NES\original>certutil -f -decodehex chr.txt original.chr
でバイナリファイル「original.chr」に変換。
これでCHRデータの完成です。
（コマンドプロンプト、cdコマンドでほかのドライブへ移動する時は「/d」が必要なんでした。全然移動されなくて･･･ 忘れてました💧）
作成したCHRデータを確認
CHRデータを編集できるツール「YY-CHR」をここからダウンロードして
このツールでバイナリファイル「original.chr」を開くとちゃんと表示されます。
ていうか最初からこのツールでCHRデータを作れば早かったんだけど💦まぁ勉強ということで･･･
気が向いたらエクセル（は持ってないからLibreOfficeのCalc）とかで簡易ツール作ろうかな(;^_^A
次回からCHRデータはこのツールで製作しようっと。
まだデータを作っただけで表示するところまで行ってないけど･･･
疲れたので表示はまた次回~✋
※ "요"の左上がドット欠けしていたため、関連箇所を修正しました。（2023.2.1）
※ 今後の都合上、ファイル名を「original.txt」➝「chr.txt」に変更しました（2023.2.4）
参考文献
AnayaSoft.“ファミコンゲーム製作入門(SPECIAL版）“.書籍
