got basic as working

cart/as/README.md

@@ -1,5 +1,7 @@
 This is an example null0 cart written in [assemblyscript](https://www.assemblyscript.org/).
 
+You can make your own by editing files in [src/](src). `npm run build` will build your cart in `build/`. Change the package-name in package.json to change the name of the cart.
+
 ## TODO
 
-- look into [better build](https://github.com/notnullgames/null0-ideas/blob/main/projects/assemblyscript/tools/build.mjs)
+- look into [better cross-plaform build](https://github.com/notnullgames/null0-ideas/blob/main/projects/assemblyscript/tools/build.mjs)

cart/as/null0.ts

@@ -1,22 +1,2 @@
 // include this in your null0 cart
-// asc src/index.ts  --target release --use trace=_null0_trace --use abort=_null0_abort --use seed=_null0_seed --lib ./null0.ts
-
-// log a string
-@external("null0", "trace")
-declare function _null0_real_trace(text: ArrayBuffer): void
-
-// these are called by language
-// https://www.assemblyscript.org/concepts.html#special-imports
-// TODO: would WASI help with these?
-
-export function _null0_trace(message: String): void {
-  _null0_real_trace(String.UTF8.encode(message, true));
-}
-
-export function _null0_abort(message: String, fileName: String, line: u32, column: u32): void {
-  _null0_real_trace(String.UTF8.encode("ABORT: " + message, true));
-}
-
-export function _null0_seed(): f64 {
-  return 1.0;
-}
+// asc --config ./node_modules/@assemblyscript/wasi-shim/asconfig.json --lib ./null0.ts src/main.ts

cart/as/package.json

@@ -1,13 +1,16 @@
 {
-  "name": "@null0/example-as",
+  "name": "example-as",
+  "private": true,
   "version": "0.0.0",
   "scripts": {
-    "build": "asc src/index.ts --exportStart=_null0_init  --target release --use trace=_null0_trace --use abort=_null0_abort --use seed=_null0_seed --lib ./null0.ts && mkdir -p build/cart/assets && cp build/main.wasm build/cart && cp src/assets/* build/cart/assets && cd build/cart && zip -r ../example.null0 .",
-    "start": "../../build/host/null0  ./build/example.null0",
+    "build": "asc --config ./node_modules/@assemblyscript/wasi-shim/asconfig.json --lib ./null0.ts --optimizeLevel 3 --outFile build/cart/main.wasm src/main.ts",
+    "postbuild": "mkdir -p build/cart/assets && cp src/assets/* build/cart/assets && cd build/cart && zip -r ../${npm_package_name}.null0 . && cp ../${npm_package_name}.null0 ../../../../docs/cart/",
+    "start": "../../build/host/null0  ./build/${npm_package_name}.null0",
     "prestart": "npm run build"
   },
   "license": "MIT",
   "devDependencies": {
+    "@assemblyscript/wasi-shim": "^0.1.0",
     "assemblyscript": "^0.27.29"
   },
   "type": "module",

cart/as/src/index.ts → cart/as/src/main.ts

@@ -1,9 +1,9 @@
 // called when the cart is loaded
 export function load(): void {
-  trace("hello from AS");
+  console.log("hello from AS");
 }
 
 // called on every frame
 export function update(): void {
-  trace("update");
+  console.log("update");
 }

cart/as/src/tsconfig.json → cart/as/tsconfig.json

@@ -1,6 +1,4 @@
 {
   "extends": "assemblyscript/std/assembly.json",
-  "include": [
-    "./**/*.ts"
-  ]
-}
+  "include": ["./src/**/*.ts"]
+}

docs/null0.js

@@ -134,10 +134,6 @@ export async function setupCart(
 
   out.cart = cart;
 
-  if (cart._null0_init) {
-    cart._null0_init();
-  }
-
   if (cart._start) {
     cart._start();
   }

null0_api/src/null0_api_wamr.h

@@ -833,13 +833,13 @@ bool null0_init() {
   cart_keyUp = wasm_runtime_lookup_function(module_inst, "keyUp");
   cart_keyDown = wasm_runtime_lookup_function(module_inst, "keyDown");
 
-  // this is for AS, since it needs a seperate function called
+  // this is for hosts that seperate init
   wasm_function_inst_t cart_init = NULL;
-  cart_init = wasm_runtime_lookup_function(module_inst, "_null0_init");
+  cart_init = wasm_runtime_lookup_function(module_inst, "load");
   if (cart_init != NULL) {
     if (!wasm_runtime_call_wasm(exec_env, cart_init, 0, NULL)) {
       // not fatal, but this will help with troubleshooting
-      printf("init: %s\n", wasm_runtime_get_exception(module_inst));
+      printf("load: %s\n", wasm_runtime_get_exception(module_inst));
     }
   }