orbit: fix planets not orbiting

skycraft/index.ts

@@ -363,7 +363,8 @@ async function main() {
     // [ ] landing
     // [ ] huge planets
     // [x] lighting
-    // [ ] better lighting
+    // [x] better lighting
+    // [ ] betterer lighting
     // [x] optimize geometry generation
 
     const modelPromise = loadObjModel('spaceship.obj');

skycraft/orbit.ts

@@ -181,7 +181,7 @@ export function getCartesianState(orbit: Orbit, mu: number, time: number) {
 
     // Newton's method
     var E2 = 0;
-    var E = orbit.lastE || M;
+    var E = M;
     let iterations = 0;
     // a clever guess? https://link.springer.com/article/10.1023/A:1008200607490
     // doesn't work at all.