Script ezy

assets/engine.js

@@ -0,0 +1,46 @@
+var Actions;
+var camera, cameraPosition;
+var cube, cubePosition, cubeRenderable, cubeMesh;
+
+// init() is called via scriptManagerCallGlobal(), which pumps the asset
+// system + job queue until any promise it returns settles - so it's safe
+// to await include() here even though this runs before the main loop.
+async function init() {
+  Actions = await include("input.js");
+
+  camera = new Entity();
+  cameraPosition = camera.add(POSITION);
+  camera.add(CAMERA);
+  cameraPosition.position = new Vec3(3, 3, -6);
+  cameraPosition.lookAt(new Vec3(0, 0, 0));
+
+  cube = new Entity();
+  cubePosition = cube.add(POSITION);
+  cubeRenderable = cube.add(RENDERABLE);
+  cubeMesh = Mesh.createCube();
+  cubeRenderable.mesh = cubeMesh;
+  cubeRenderable.color = Color.red();
+}
+
+// Runs every frame (including dynamic/interpolation frames) - use for
+// smooth, purely presentational animation.
+function update() {
+  cubePosition.rotation.y += TIME.delta * 1.5;
+  cubePosition.rotation.x += TIME.delta * 0.7;
+}
+
+// Runs once per fixed timestep only - use for gameplay logic that should
+// be deterministic and independent of display refresh rate.
+function fixedUpdate() {
+  var move = 3.0 * TIME.delta;
+  if(Input.isDown(Actions.LEFT))  cubePosition.position.x -= move;
+  if(Input.isDown(Actions.RIGHT)) cubePosition.position.x += move;
+  if(Input.isDown(Actions.UP))    cubePosition.position.z += move;
+  if(Input.isDown(Actions.DOWN))  cubePosition.position.z -= move;
+  if(Input.pressed(Actions.ACCEPT)) cubePosition.position = new Vec3(0, 0, 0);
+}
+
+function deinit() {
+  cube.dispose();
+  camera.dispose();
+}