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Lua: Add support for enum properties and some other primitives
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@praydog
praydog committed Jun 28, 2024
1 parent a16461a commit 21aaf9a
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Showing 2 changed files with 130 additions and 3 deletions.
4 changes: 3 additions & 1 deletion lua-api/lib/src/ScriptContext.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -428,7 +428,9 @@ int ScriptContext::setup_bindings() {
"static_class", &uevr::API::UStruct::static_class,
"get_super_struct", &uevr::API::UStruct::get_super_struct,
"get_super", &uevr::API::UStruct::get_super,
"find_function", &uevr::API::UStruct::find_function,
"find_function", [](uevr::API::UStruct& self, const std::wstring& name) {
return self.find_function(name);
},
"get_child_properties", &uevr::API::UStruct::get_child_properties,
"get_properties_size", &uevr::API::UStruct::get_properties_size
);
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129 changes: 127 additions & 2 deletions lua-api/lib/src/ScriptUtility.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -56,11 +56,66 @@ sol::object prop_to_object(sol::this_state s, void* self, uevr::API::FProperty*
return sol::make_object(s, *(float*)((uintptr_t)self + offset));
case L"DoubleProperty"_fnv:
return sol::make_object(s, *(double*)((uintptr_t)self + offset));
case L"ByteProperty"_fnv:
return sol::make_object(s, *(uint8_t*)((uintptr_t)self + offset));
case L"Int8Property"_fnv:
return sol::make_object(s, *(int8_t*)((uintptr_t)self + offset));
case L"Int16Property"_fnv:
return sol::make_object(s, *(int16_t*)((uintptr_t)self + offset));
case L"UInt16Property"_fnv:
return sol::make_object(s, *(uint16_t*)((uintptr_t)self + offset));
case L"IntProperty"_fnv:
return sol::make_object(s, *(int32_t*)((uintptr_t)self + offset));
case L"UIntProperty"_fnv:
case L"UInt32Property"_fnv:
return sol::make_object(s, *(uint32_t*)((uintptr_t)self + offset));
case L"UInt64Property"_fnv:
return sol::make_object(s, *(uint64_t*)((uintptr_t)self + offset));
case L"Int64Property"_fnv:
return sol::make_object(s, *(int64_t*)((uintptr_t)self + offset));
case L"EnumProperty"_fnv:
{
const auto ep = (uevr::API::FEnumProperty*)desc;
const auto np = ep->get_underlying_prop();

if (np == nullptr) {
return sol::make_object(s, sol::lua_nil);
}

const auto np_c = np->get_class();

if (np_c == nullptr) {
return sol::make_object(s, sol::lua_nil);
}

const auto np_name_hash = ::utility::hash(np_c->get_fname()->to_string());

switch (np_name_hash) {
case L"FloatProperty"_fnv:
return sol::make_object(s, *(float*)((uintptr_t)self + offset));
case L"DoubleProperty"_fnv:
return sol::make_object(s, *(double*)((uintptr_t)self + offset));
case L"ByteProperty"_fnv:
return sol::make_object(s, *(uint8_t*)((uintptr_t)self + offset));
case L"Int8Property"_fnv:
return sol::make_object(s, *(int8_t*)((uintptr_t)self + offset));
case L"Int16Property"_fnv:
return sol::make_object(s, *(int16_t*)((uintptr_t)self + offset));
case L"UInt16Property"_fnv:
return sol::make_object(s, *(uint16_t*)((uintptr_t)self + offset));
case L"IntProperty"_fnv:
return sol::make_object(s, *(int32_t*)((uintptr_t)self + offset));
case L"UIntProperty"_fnv:
case L"UInt32Property"_fnv:
return sol::make_object(s, *(uint32_t*)((uintptr_t)self + offset));
case L"UInt64Property"_fnv:
return sol::make_object(s, *(uint64_t*)((uintptr_t)self + offset));
case L"Int64Property"_fnv:
return sol::make_object(s, *(int64_t*)((uintptr_t)self + offset));
};

return sol::make_object(s, sol::lua_nil);
}
case L"NameProperty"_fnv:
return sol::make_object(s, *(uevr::API::FName*)((uintptr_t)self + offset));
case L"ObjectProperty"_fnv:
Expand Down Expand Up @@ -209,19 +264,89 @@ void set_property(sol::this_state s, void* self, uevr::API::UStruct* c, const st
return;
}
case L"FloatProperty"_fnv:
//self.get_property<float>(name) = value.as<float>();
*(float*)((uintptr_t)self + offset) = value.as<float>();
return;
case L"DoubleProperty"_fnv:
*(double*)((uintptr_t)self + offset) = value.as<double>();
return;
case L"ByteProperty"_fnv:
*(uint8_t*)((uintptr_t)self + offset) = value.as<uint8_t>();
return;
case L"Int8Property"_fnv:
*(int8_t*)((uintptr_t)self + offset) = value.as<int8_t>();
return;
case L"Int16Property"_fnv:
*(int16_t*)((uintptr_t)self + offset) = value.as<int16_t>();
return;
case L"UInt16Property"_fnv:
*(uint16_t*)((uintptr_t)self + offset) = value.as<uint16_t>();
return;
case L"IntProperty"_fnv:
*(int32_t*)((uintptr_t)self + offset) = value.as<int32_t>();
return;
return;
case L"UIntProperty"_fnv:
case L"UInt32Property"_fnv:
*(uint32_t*)((uintptr_t)self + offset) = value.as<uint32_t>();
return;
case L"UInt64Property"_fnv:
*(uint64_t*)((uintptr_t)self + offset) = value.as<uint64_t>();
return;
case L"Int64Property"_fnv:
*(int64_t*)((uintptr_t)self + offset) = value.as<int64_t>();
return;
case L"EnumProperty"_fnv:
{
const auto ep = (uevr::API::FEnumProperty*)desc;
const auto np = ep->get_underlying_prop();

if (np == nullptr) {
throw sol::error("Enum property has no underlying property");
}

const auto np_c = np->get_class();

if (np_c == nullptr) {
throw sol::error("Enum property's underlying property has no class");
}

const auto np_name_hash = ::utility::hash(np_c->get_fname()->to_string());

switch (np_name_hash) {
case L"FloatProperty"_fnv:
*(float*)((uintptr_t)self + offset) = value.as<float>();
return;
case L"DoubleProperty"_fnv:
*(double*)((uintptr_t)self + offset) = value.as<double>();
return;
case L"ByteProperty"_fnv:
*(uint8_t*)((uintptr_t)self + offset) = value.as<uint8_t>();
return;
case L"Int8Property"_fnv:
*(int8_t*)((uintptr_t)self + offset) = value.as<int8_t>();
return;
case L"Int16Property"_fnv:
*(int16_t*)((uintptr_t)self + offset) = value.as<int16_t>();
return;
case L"UInt16Property"_fnv:
*(uint16_t*)((uintptr_t)self + offset) = value.as<uint16_t>();
return;
case L"IntProperty"_fnv:
*(int32_t*)((uintptr_t)self + offset) = value.as<int32_t>();
return;
case L"UIntProperty"_fnv:
case L"UInt32Property"_fnv:
*(uint32_t*)((uintptr_t)self + offset) = value.as<uint32_t>();
return;
case L"UInt64Property"_fnv:
*(uint64_t*)((uintptr_t)self + offset) = value.as<uint64_t>();
return;
case L"Int64Property"_fnv:
*(int64_t*)((uintptr_t)self + offset) = value.as<int64_t>();
return;
};

throw sol::error("Could not set enum property");
}
case L"NameProperty"_fnv:
//return sol::make_object(s, self.get_property<uevr::API::FName>(name));
throw sol::error("Setting FName properties is not supported (yet)");
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