Able to eval js with my scope!

.gitignore

@@ -0,0 +1 @@
+build

builtins.ts

@@ -52,8 +52,10 @@ const drawText = (x: number, y: number, text: string) => {
 	});
 }
 
-export default {
+const faux = {
 	clearScreen,
 	drawSprite,
 	drawText,
-}
+};
+
+export default faux;

cart_tools.ts

@@ -0,0 +1,31 @@
+import faux from "./builtins.ts";
+
+export type SheetType = "code" | "spritesheet" | "map" | "sfx" | "patterns" | "fonts";
+
+export const parseCodeSheet = (sheet: string) => {
+	try {
+		new Function(sheet);
+	} catch (err) {
+		throw err;
+	}
+	// deno-lint-ignore no-explicit-any
+	const G: any = {...faux, faux, log: console.log};
+	const context = new Proxy(G, {
+		get: (target, prop) => {
+			return target[prop];
+		},
+		set: (target, prop, value) => {
+			target[prop] = value;
+			return true;
+		},
+		has: () => {
+			return true;
+		},
+	});
+	const fn = new Function("context", `
+		with (context) {
+			${sheet}
+		}
+	`);
+	return fn(context);
+}

cart_unpacked.json

@@ -0,0 +1,6 @@
+[
+	{
+		"sheet_type": "code",
+		"value": "return {init: () => {}, update: () => {}, draw: () => {clearScreen(); drawText(0, 0, 'hello world')}}"
+	}
+]

deno.json

@@ -1,5 +1,9 @@
 {
 	"fmt": {
 		"useTabs": true
+	},
+	"tasks": {
+		"run": "deno run -A --unstable index.ts",
+		"build": "deno compile --output build/faux -A --unstable index.ts"
 	}
 }

font.ts

@@ -1,3 +1,19 @@
+/**
+ * Perhaps fonts can be their own type of sheet. By the calculation below, we can fit ~4 fonts per fontsheet
+ * 
+ * 3 bits for height
+ * 5 more metadata bits
+ * = 1 byte
+ * 
+ * Per character:
+ * - 3 bits for width
+ * - 5 bits for metadata
+ * - 64 bits for pixels
+ * = 9 bytes per character
+ * 
+ * 96 chars * 9 bytes = 
+ */
+
 // deno-fmt-ignore
 export const font: {[key: string]: Array<number>} = {
 	"a": [

index.ts

@@ -2,11 +2,14 @@ import {
 	mainloop,
 	frame,
 } from "./window.ts";
-import game from "./game.ts";
+import cart from "./cart_unpacked.json" assert { type: "json" };
+import { parseCodeSheet } from "./cart_tools.ts";
+
+const game = parseCodeSheet(cart[0].value);
 
 game.init();
 
-await mainloop((t) => {
+await mainloop((_t) => {
 	// TODO: use t
 	game.update();
 	game.draw();