Add browser-only editor export and 2.5D runtime presentation

engine/player-entry.ts

@@ -11,6 +11,24 @@ async function boot() {
   if (!response.ok) throw Error(`Project: HTTP ${response.status}`);
   const project: Project = await response.json();
   validateProject(project);
+  if (project.settings.presentation) {
+    ui.innerHTML = "";
+    const runtime = new FormaRuntime(canvas, {
+      log: (level, message) => {
+        if (level === "error") {
+          const error = document.createElement("div");
+          error.id = "error";
+          error.textContent = message;
+          ui.replaceChildren(error);
+        }
+      },
+    });
+    window.addEventListener("pagehide", () => runtime.dispose(), {
+      once: true,
+    });
+    await runtime.play(project);
+    return;
+  }
   ui.innerHTML = `<div class="hud"><div><strong id="title"></strong><small id="hint"></small></div><nav><button id="pause">Пауза</button><button id="restart">Перезапустить</button></nav></div><div class="touch"><div id="stick" aria-label="Джойстик"><i></i></div><div class="actions"><button id="jump" aria-label="Прыжок">↑</button><button id="action" aria-label="Действие">A</button></div></div><div id="error" hidden></div>`;
   document.getElementById("title")!.textContent = project.name;
   let firstPerson = false;