CSM/SSM: Add on_mods_loaded callback (#7411)

* CSM/SSM: Add on_mods_loaded callback

src/script/cpp_api/s_client.cpp

@@ -25,6 +25,17 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "common/c_content.h"
 #include "s_item.h"
 
+void ScriptApiClient::on_mods_loaded()
+{
+	SCRIPTAPI_PRECHECKHEADER
+
+	// Get registered shutdown hooks
+	lua_getglobal(L, "core");
+	lua_getfield(L, -1, "registered_on_mods_loaded");
+	// Call callbacks
+	runCallbacks(0, RUN_CALLBACKS_MODE_FIRST);
+}
+
 void ScriptApiClient::on_shutdown()
 {
 	SCRIPTAPI_PRECHECKHEADER

src/script/cpp_api/s_client.h

@@ -37,6 +37,9 @@ class ClientEnvironment;
 class ScriptApiClient : virtual public ScriptApiBase
 {
 public:
+	// Calls when mods are loaded
+	void on_mods_loaded();
+
 	// Calls on_shutdown handlers
 	void on_shutdown();
 

src/script/cpp_api/s_server.cpp

@@ -147,6 +147,17 @@ bool ScriptApiServer::on_chat_message(const std::string &name,
 	return ate;
 }
 
+void ScriptApiServer::on_mods_loaded()
+{
+	SCRIPTAPI_PRECHECKHEADER
+
+	// Get registered shutdown hooks
+	lua_getglobal(L, "core");
+	lua_getfield(L, -1, "registered_on_mods_loaded");
+	// Call callbacks
+	runCallbacks(0, RUN_CALLBACKS_MODE_FIRST);
+}
+
 void ScriptApiServer::on_shutdown()
 {
 	SCRIPTAPI_PRECHECKHEADER

src/script/cpp_api/s_server.h

@@ -30,6 +30,9 @@ public:
 	// Returns true if script handled message
 	bool on_chat_message(const std::string &name, const std::string &message);
 
+	// Calls when mods are loaded
+	void on_mods_loaded();
+
 	// Calls on_shutdown handlers
 	void on_shutdown();