init

js/save_load.js

@@ -0,0 +1,113 @@
+/*
+    Code for saving and loading data.
+
+    Features a somewhat efficient compression algorithm.
+*/
+
+function save() {
+    let jason = {
+        'pal': [],
+        'data': [],
+        'width': canvas.width,
+        'height': canvas.height
+    };
+
+    for (let item of mainTiles.tiles) {
+        jason.pal.push([
+            item.namespace,
+            item.id
+        ])
+    }
+
+    let json = jason.data;
+
+    for (let i = 0; i < canvas.blocks.length; i += 128) {
+        let arr = canvas.blocks.slice(i, i + 128);
+
+        let pal = Object.values(arr.filter((v, i, a) => a.findIndex(v2 => (v2 === v)) === i).sort());
+        let otherArray;
+        if (pal.length < 9 && pal.length > 1) {
+            otherArray = new Uint8Array(64);
+
+            for (let i in otherArray) {
+                otherArray[i] = (((pal.indexOf(arr[i*2]) * 8) + pal.indexOf(arr[i*2+1])) + 'A'.charCodeAt()) % 128;
+            }
+
+        } else if (pal.length > 8) {
+            otherArray = new Uint8Array(128);
+
+            for (let i in otherArray) {
+                otherArray[i] = (pal.indexOf(arr[i]) + 'A'.charCodeAt()) % 128;
+            }
+
+        }
+
+
+        json[i / 128] = {
+            'pal': pal,
+            'dat': otherArray ? new TextDecoder('ascii').decode(otherArray) : undefined
+        };
+    }
+
+    document.querySelector('#code').value = JSON.stringify(jason);
+}
+
+function load() {
+    let jason = JSON.parse(document.querySelector('#code').value);
+
+    let json = jason.data;
+
+    canvas.width = jason.width;
+    canvas.height = jason.height;
+    canvas.resize();
+    
+    let mainPal = jason.pal.map(x => mainTiles.resolveID(x[0],x[1]));
+
+    console.log(mainPal);
+
+    for (let i in json) {
+        let data = json[i];
+        let pal = data.pal;
+        let dat = new TextEncoder('ascii').encode(data.dat);
+
+        let otherArray = new Uint16Array(128);
+
+        if (pal.length < 2) {
+            for (let i in otherArray) {
+                otherArray[i] =  mainPal[(pal[0])];
+            }
+            
+        } else if (pal.length < 9) {
+            for (let i in dat) {
+                otherArray[i*2] = mainPal[pal[((dat[i] - 'A'.charCodeAt()) & 0x38) / 8]];
+                otherArray[i*2+1] =  mainPal[pal[(dat[i] - 'A'.charCodeAt()) & 0x7]];
+            }
+            
+        } else {
+            for (let i in dat) {
+                otherArray[i] =  mainPal[pal[(dat[i] - 'A'.charCodeAt()) & 0x7F]];
+            }
+        }
+
+        canvas.blocks.set(otherArray,Math.min(i*128,canvas.blocks.length - 128));
+    }
+
+    for (let i in canvas.temp) {
+        canvas.temp[i] = mainTiles.tiles[canvas.blocks[i]].attributes.temperature;
+    }
+}
+
+var loc3 = new URL(window.location).searchParams;
+let loc = loc3.get("embed");
+if (loc3.get('oops') == 'true') {
+    alert('Oh no!');
+}
+var loc2;
+
+if (loc) {
+    (async function() {
+        document.querySelector('#code').value = await fetch(loc).then(x => x.text());
+        load();
+        loc2 = loc3;
+    })()
+}