Checkpoint 2: integrate native Editor, MCP, gameplay builds and standalone export

examples/tutorials/moving/Gameplay.cpp

@@ -0,0 +1,31 @@
+#include "Gameplay.hpp"
+
+namespace faset::gameplay {
+void registerGameplay(runtime::Runtime& world) {
+    runtime::Behavior mover;
+    mover.update = [](runtime::Runtime& game, runtime::EntityHandle self, double delta) {
+        // fields() returns a configuration copy. transform() returns a live pose copy.
+        const auto settings = game.fields(self, "tutorial.move_x");
+        const float speed = settings.value("speed", 2.0f); // metres per second
+        auto pose = game.transform(self);
+        pose.position[0] += speed * static_cast<float>(delta);
+        game.setTransform(self, pose); // This object has no rigid body.
+    };
+    world.registerBehavior("tutorial.move_x", std::move(mover));
+}
+
+nlohmann::json schema() {
+    // The FieldId is the map key. Keep it stable if you change a display name.
+    return nlohmann::json::array({{{"id", "tutorial.move_x"},
+                                   {"version", 1},
+                                   {"name", "Move along X"},
+                                   {"fields",
+                                    {{"speed",
+                                      {{"id", "speed"},
+                                       {"type", "number"},
+                                       {"default", 2.0},
+                                       {"min", -20.0},
+                                       {"max", 20.0},
+                                       {"units", "m/s"}}}}}}});
+}
+} // namespace faset::gameplay