Added startup scripts

src/ScriptEngine.cpp

@@ -2,6 +2,7 @@
 #include "Game.h"
 #include <iostream>
 #include <stdexcept>
+#include <unordered_map>
 #include "Location.h"
 
 #define SOL_ALL_SAFETIES_ON 1
@@ -11,6 +12,8 @@ namespace ZL {
 
     struct ScriptEngine::Impl {
         sol::state lua;
+        std::unordered_map<std::string, sol::protected_function> triggerEnterCallbacks;
+        std::unordered_map<std::string, sol::protected_function> triggerExitCallbacks;
     };
 
     ScriptEngine::ScriptEngine() = default;
@@ -133,6 +136,24 @@ namespace ZL {
                 }
             });
 
+        api.set_function("switch_navigation",
+            [game](int index) {
+                if (!game->switchNavigation(index)) {
+                    std::cerr << "[script] switch_navigation: index " << index << " out of range\n";
+                }
+            });
+
+        // set_trigger_zone_callbacks(zone_id, on_enter, on_exit)
+        // on_enter and on_exit are optional Lua functions (pass nil to omit).
+        // Called when the player enters or exits the named trigger zone.
+        api.set_function("set_trigger_zone_callbacks",
+            [this_impl = impl.get()](const std::string& zoneId, sol::object onEnter, sol::object onExit) {
+                if (onEnter.is<sol::protected_function>())
+                    this_impl->triggerEnterCallbacks[zoneId] = onEnter.as<sol::protected_function>();
+                if (onExit.is<sol::protected_function>())
+                    this_impl->triggerExitCallbacks[zoneId] = onExit.as<sol::protected_function>();
+            });
+
         // receive_npc_gift(npc_index)
         api.set_function("receive_npc_gift", [game, inventory](int npcIndex) {
             std::cout << "[script] receive_npc_gift: npc index " << npcIndex << std::endl;
@@ -254,4 +275,26 @@ namespace ZL {
         }
     }
 
+    void ScriptEngine::callTriggerEnterCallback(const std::string& zoneId) {
+        if (!impl) return;
+        auto it = impl->triggerEnterCallbacks.find(zoneId);
+        if (it == impl->triggerEnterCallbacks.end()) return;
+        auto result = it->second();
+        if (!result.valid()) {
+            sol::error err = result;
+            std::cerr << "[SCRIPT] trigger enter callback error for '" << zoneId << "': " << err.what() << "\n";
+        }
+    }
+
+    void ScriptEngine::callTriggerExitCallback(const std::string& zoneId) {
+        if (!impl) return;
+        auto it = impl->triggerExitCallbacks.find(zoneId);
+        if (it == impl->triggerExitCallbacks.end()) return;
+        auto result = it->second();
+        if (!result.valid()) {
+            sol::error err = result;
+            std::cerr << "[SCRIPT] trigger exit callback error for '" << zoneId << "': " << err.what() << "\n";
+        }
+    }
+
 } // namespace ZL