add vec2.rotate

src/logic/scripting/lua/libs/libvecn.cpp

@@ -183,6 +183,18 @@ static int l_vec2_angle(lua::State* L) {
     }
 }
 
+static int l_vec2_rotate(lua::State* L) {
+    uint argc = lua::check_argc(L, 2, 3);
+    auto vec = lua::tovec<2, number_t>(L, 1);
+    auto angle = glm::radians(lua::tonumber(L, 2));
+
+    if (argc == 2) {
+        return lua::pushvec(L, glm::rotate(vec, angle));
+    } else {
+        return lua::setvec(L, 3, glm::rotate(vec, angle));
+    }
+}
+
 template <int n>
 static int l_tostring(lua::State* L) {
     lua::check_argc(L, 1);
@@ -215,6 +227,7 @@ const luaL_Reg vec2lib[] = {
     {"dot", lua::wrap<l_dot<2>>},
     {"angle", lua::wrap<l_vec2_angle>},
     {"mix", lua::wrap<l_mix<2>>},
+    {"rotate", lua::wrap<l_vec2_rotate>},
     {NULL, NULL}};
 
 const luaL_Reg vec3lib[] = {