[oden] Garbage assets, need to rewrite to IO

src/main.ts

@@ -1,12 +1,17 @@
-import { cls, print, spr } from "./graphics.ts";
+import { cls, print, spr, use_texture } from "./graphics.ts";
+import { load_texture } from "./assets.ts";
+
+let the_texture = 0;
 
 export function init() {
   print("Hello world!");
+  the_texture = load_texture("./src/happy-tree.png");
 }
 
 export function update() {}
 
 export function draw() {
   cls(0.1, 0.2, 0.3);
+  use_texture(the_texture);
   spr((320 - 256) / 2, 0, 256, 240, 0, 0);
 }