added commands to check offsets for ascii/write ascii at an offset

Author: Tim Winchester

cmd/check-ascii-cmd.js

@@ -0,0 +1,24 @@
+const offsetChecker = require('../lib/offset-checker.js');
+const saveFileUtils = require('../util/save-file-utils.js');
+const CONFIG = require('../config.json');
+
+const offset = parseInt(process.argv[2]);
+const length = parseInt(process.argv[3]);
+const offsets = Array.apply(0, new Array(length)).map((e, i) => i * 8 + offset);
+const saveFilepath = `${CONFIG.savepath}game_data.sav`;
+
+const values = offsets.map((offset) => offsetChecker(offset, saveFilepath));
+const hexStrings = values.map((value) => saveFileUtils.toHexString(value));
+const codes = [];
+hexStrings.forEach((hexString) => {
+    hexString.split('').reduce((prev, next) => {
+        if (prev && next) {
+            codes.push(`0x${prev}${next}`);
+            return undefined;
+        } else {
+            return next;
+        }
+    }, undefined)
+});
+const chars = codes.map((code) => String.fromCharCode(code));
+console.log(chars.join(''));

cmd/set-ascii-cmd.js

@@ -0,0 +1,39 @@
+const offsetSetter = require('../lib/offset-setter.js');
+const saveFileUtils = require('../util/save-file-utils.js');
+const CONFIG = require('../config.json');
+
+const offset = parseInt(process.argv[2]);
+const words = parseInt(process.argv[3]);
+const text = process.argv[4];
+const offsets = Array.apply(0, new Array(words)).map((e, i) => i * 8 + offset);
+const codes = text.split('').map((char) => {
+    const code = char.charCodeAt(0);
+    const hexCode = code.toString(16);
+    return hexCode;
+});
+const saveFilepath = `${CONFIG.savepath}game_data.sav`;
+
+const entries = [];
+const remainder = codes.reduce((acc, next) => {
+    if (acc.length === 6) {
+        const entry = acc + next;
+        entries.push(entry);
+        return '';
+    } else {
+        return acc + next;
+    }
+}, '');
+if (remainder.length > 0) {
+    const padCount = 8 - remainder.length;
+    const pad = new Array(padCount + 1).join('0');
+    const entry = remainder + pad;
+    entries.push(entry);
+}
+
+// ensure offsets are clean in case the new string is shorter than the previous one
+offsets.forEach((offset) => offsetSetter(offset, 0, saveFilepath));
+
+entries.forEach((entry, i) => {
+    const offset = offsets[i];
+    offsetSetter(offset, parseInt(entry, 16), saveFilepath);
+});

package.json

@@ -23,6 +23,7 @@
     "build-raw-changes-from-snapshots": "node cmd/build-raw-changes-from-snapshots-cmd.js",
     "build-hex-view": "node cmd/build-hex-view.js",
     "check-all-item-slots": "node cmd/check-all-item-slots-cmd.js",
+    "check-ascii-at-offset": "node cmd/check-ascii-cmd.js",
     "check-offset": "node cmd/offset-checker-cmd.js",
     "check-item-slot": "node cmd/check-item-slot-cmd.js",
     "create-blank-snapshot": "node cmd/create-blank-snapshot-cmd.js",
@@ -45,6 +46,7 @@
     "quest-analyzer": "node cmd/quest-analyzer-cmd.js",
     "read-changes": "node cmd/read-changes-cmd.js",
     "restore-backup": "node cmd/restore-backup-cmd.js",
+    "set-ascii-at-offset": "node cmd/set-ascii-cmd.js",
     "set-hearts": "node cmd/set-hearts-cmd.js",
     "set-rupees": "node cmd/set-rupees-cmd.js",
     "set-stamina": "node cmd/set-stamina-cmd.js",