napalm flowing logic fixes. also napalm burns the terrain surface particles.

index.html

@@ -17,6 +17,6 @@
   </style>
 </head>
 <body>
-  <script type="module" src="src/main.js?v=8"></script>
+  <script type="module" src="src/main.js?v=15"></script>
 </body>
 </html>