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

examples/tutorials/physics/Gameplay.cpp

@@ -0,0 +1,43 @@
+#include "Gameplay.hpp"
+#include <iostream>
+
+namespace faset::gameplay {
+void registerGameplay(runtime::Runtime& world) {
+    runtime::Behavior character;
+    character.fixedUpdate = [](runtime::Runtime& game, runtime::EntityHandle self, double) {
+        const auto settings = game.fields(self, "tutorial.character");
+        const auto input = game.input();
+        auto velocity = game.velocity(self); // Metres per second; preserve the Y component.
+        velocity[0] = input.horizontal * settings.value("speed", 4.0f);
+        if (input.jumpPressed && game.grounded(self))
+            velocity[1] = settings.value("jump_speed", 5.0f);
+        // Do not multiply velocity by delta. The physics solver integrates it.
+        game.setVelocity(self, velocity);
+    };
+    character.onCollision = [](runtime::Runtime&, runtime::EntityHandle,
+                               const runtime::CollisionEvent& event) {
+        if (event.began)
+            std::cout << "Character contact began\n";
+    };
+    world.registerBehavior("tutorial.character", std::move(character));
+}
+
+nlohmann::json schema() {
+    return nlohmann::json::array({{{"id", "tutorial.character"},
+                                   {"version", 1},
+                                   {"name", "Physics character"},
+                                   {"fields",
+                                    {{"speed",
+                                      {{"id", "speed"},
+                                       {"type", "number"},
+                                       {"default", 4.0},
+                                       {"min", 0.0},
+                                       {"units", "m/s"}}},
+                                     {"jump_speed",
+                                      {{"id", "jump_speed"},
+                                       {"type", "number"},
+                                       {"default", 5.0},
+                                       {"min", 0.0},
+                                       {"units", "m/s"}}}}}}});
+}
+} // namespace faset::gameplay