Add animation error logging

assets/index.html

@@ -255,26 +255,32 @@
 
         try {
             const landscape = new Landscape();
+            addLog('Landscape created, triangles: ' + landscape.triangles.length);
+
             const airplane = new Airplane();
-            addLog('Objects created');
+            addLog('Airplane created, vertices: ' + airplane.vertices.length);
 
             function animate() {
-                ctx.fillStyle = '#000';
-                ctx.fillRect(0, 0, width, height);
+                try {
+                        ctx.fillStyle = '#000';
+                        ctx.fillRect(0, 0, width, height);
 
-                landscape.update();
-                landscape.draw();
-
-                airplane.update();
-                airplane.render();
+                        landscape.update();
+                        landscape.draw();
 
+                        airplane.update();
+                        airplane.render();
+                    } catch (err) {
+                        addLog('ANIM ERR: ' + err.message + ' at line ' + (err.lineNumber || '?'));
+                        return;
+                    }
                 requestAnimationFrame(animate);
             }
 
             animate();
             addLog('Animation started');
         } catch (e) {
-            addLog('CATCH: ' + e.message);
+            addLog('CATCH: ' + e.message + ' at line ' + (e.lineNumber || '?'));
         }
     </script>
 </body>