lua: audio.play_sound(name, x, y, z, volume, pitch, channel)

src/logic/scripting/lua/LuaState.cpp

@@ -6,6 +6,7 @@
 #include "libgui.h"
 #include "libplayer.h"
 #include "libinventory.h"
+#include "libaudio.h"
 #include "../../../util/stringutil.h"
 
 lua::luaerror::luaerror(const std::string& message) : std::runtime_error(message) {
@@ -124,6 +125,7 @@ void lua::LuaState::createLibs() {
     openlib("time", timelib, 0);
     openlib("file", filelib, 0);
     openlib("gui", guilib, 0);
+    openlib("audio", audiolib, 0);
 
     addfunc("print", lua_wrap_errors<l_print>);
 

src/logic/scripting/lua/libaudio.cpp

@@ -0,0 +1,40 @@
+#include "libaudio.h"
+
+#include "../../../audio/audio.h"
+#include "../../../engine.h"
+#include "../scripting.h"
+
+inline const char* DEFAULT_CHANNEL = "regular";
+
+static int l_audio_play_sound(lua_State* L) {
+    const char* name = lua_tostring(L, 1);
+    lua::luanumber x = lua_tonumber(L, 2);
+    lua::luanumber y = lua_tonumber(L, 3);
+    lua::luanumber z = lua_tonumber(L, 4);
+    lua::luanumber volume = lua_tonumber(L, 5);
+    lua::luanumber pitch = lua_tonumber(L, 6);
+    const char* channel = DEFAULT_CHANNEL;
+    if (!lua_isnoneornil(L, 7)) {
+        channel = lua_tostring(L, 7);
+    }
+    int channel_index = audio::get_channel_index(channel);
+    if (channel_index == -1) {
+        return 0;
+    }
+    
+    auto assets = scripting::engine->getAssets();
+    auto sound = assets->getSound(name);
+    if (sound == nullptr) {
+        return 0;
+    }
+    audio::speakerid_t id = audio::play(
+        sound, glm::vec3(x, y, z), false, volume, pitch, false, audio::PRIORITY_NORMAL, channel_index
+    );
+    lua_pushinteger(L, static_cast<lua::luaint>(id));
+    return 1;
+}
+
+const luaL_Reg audiolib [] = {
+    {"play_sound", lua_wrap_errors<l_audio_play_sound>},
+    {NULL, NULL}
+};

src/logic/scripting/lua/libaudio.h

@@ -0,0 +1,8 @@
+#ifndef LOGIC_SCRIPTING_LUA_LIBAUDIO_H_
+#define LOGIC_SCRIPTING_LUA_LIBAUDIO_H_
+
+#include "lua_commons.h"
+
+extern const luaL_Reg audiolib[];
+
+#endif // LOGIC_SCRIPTING_LUA_LIBAUDIO_H_