some more cart infrastructure

sheet.ts

@@ -0,0 +1,38 @@
+import faux from "./builtins.ts";
+import { getCart } from "./cart.ts";
+
+export type SheetType = "code" | "spritesheet" | "map" | "sfx" | "patterns" | "fonts";
+
+const getSheet = (n: number) => {
+	return getCart()[n].value;
+}
+
+export const codeSheet = (sheet: number) => {
+	const code = getSheet(sheet);
+	try {
+		new Function(code);
+	} catch (err) {
+		throw err;
+	}
+	const fn = new Function("context", `
+		with (context) {
+			${code}
+		}
+	`);
+	return fn(context);
+}
+
+// deno-lint-ignore no-explicit-any
+const G: any = {...faux, faux, log: console.log, code_sheet: codeSheet};
+const context = new Proxy(G, {
+	get: (target, prop) => {
+		return target[prop];
+	},
+	set: (target, prop, value) => {
+		target[prop] = value;
+		return true;
+	},
+	has: () => {
+		return true;
+	},
+});