[CSM] Add method that display chat to client-sided lua. (#5089) (#5091)

* squashed: [Client-sided scripting] Don't register functions that don't work. (#5091)

src/script/lua_api/l_base.cpp

@@ -37,6 +37,12 @@ Server *ModApiBase::getServer(lua_State *L)
 	return getScriptApiBase(L)->getServer();
 }
 
+#ifndef SERVER
+Client *ModApiBase::getClient(lua_State *L)
+{
+	return getScriptApiBase(L)->getClient();
+}
+#endif
 Environment *ModApiBase::getEnv(lua_State *L)
 {
 	return getScriptApiBase(L)->getEnv();

src/script/lua_api/l_base.h

@@ -28,6 +28,10 @@ extern "C" {
 #include <lauxlib.h>
 }
 
+#ifndef SERVER
+#include "client.h"
+#endif
+
 class ScriptApiBase;
 class Server;
 class Environment;
@@ -38,6 +42,10 @@ class ModApiBase {
 public:
 	static ScriptApiBase*   getScriptApiBase(lua_State *L);
 	static Server*          getServer(lua_State *L);
+	#ifndef SERVER
+	static Client*          getClient(lua_State *L);
+	#endif // !SERVER
+
 	static Environment*     getEnv(lua_State *L);
 	static GUIEngine*       getGuiEngine(lua_State *L);
 	// When we are not loading the mod, this function returns "."

src/script/lua_api/l_client.cpp

@@ -20,6 +20,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #include "l_client.h"
 #include "l_internal.h"
+#include "util/string.h"
 
 int ModApiClient::l_get_current_modname(lua_State *L)
 {
@@ -27,7 +28,18 @@ int ModApiClient::l_get_current_modname(lua_State *L)
 	return 1;
 }
 
+// display_chat_message(message)
+int ModApiClient::l_display_chat_message(lua_State *L)
+{
+	NO_MAP_LOCK_REQUIRED;
+
+	std::string message = luaL_checkstring(L, 1);
+	getClient(L)->pushToChatQueue(utf8_to_wide(message));
+	return 1;
+}
+
 void ModApiClient::Initialize(lua_State *L, int top)
 {
 	API_FCT(get_current_modname);
+	API_FCT(display_chat_message);
 }

src/script/lua_api/l_client.h

@@ -28,6 +28,7 @@ class ModApiClient : public ModApiBase
 private:
 	// get_current_modname()
 	static int l_get_current_modname(lua_State *L);
+	static int l_display_chat_message(lua_State *L);
 
 public:
 	static void Initialize(lua_State *L, int top);

src/script/lua_api/l_util.cpp

@@ -526,6 +526,32 @@ void ModApiUtil::Initialize(lua_State *L, int top)
 	API_FCT(get_version);
 }
 
+void ModApiUtil::InitializeClient(lua_State *L, int top)
+{
+	API_FCT(log);
+
+	API_FCT(setting_set);
+	API_FCT(setting_get);
+	API_FCT(setting_setbool);
+	API_FCT(setting_getbool);
+	API_FCT(setting_save);
+
+	API_FCT(parse_json);
+	API_FCT(write_json);
+
+	API_FCT(is_yes);
+
+	API_FCT(get_builtin_path);
+
+	API_FCT(compress);
+	API_FCT(decompress);
+
+	API_FCT(encode_base64);
+	API_FCT(decode_base64);
+
+	API_FCT(get_version);
+}
+
 void ModApiUtil::InitializeAsync(AsyncEngine& engine)
 {
 	ASYNC_API_FCT(log);

src/script/lua_api/l_util.h

@@ -110,6 +110,8 @@ private:
 public:
 	static void Initialize(lua_State *L, int top);
 
+	static void InitializeClient(lua_State *L, int top);
+
 	static void InitializeAsync(AsyncEngine& engine);
 
 };