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Add support for LuaToken to the LuaCall unreal pipeline

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This commit is contained in:
jyelon
2025-02-05 16:08:34 -05:00
parent 07dbec4bef
commit 4023d19247
4 changed files with 59 additions and 13 deletions
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19
Source/Integration/LuaCall.cpp
View File

@@ -30,6 +30,13 @@ void UlxLuaCallLibrary::LuaCallAddStringParameter(UObject *context, const FStrin
sb.write_string(pstring);
}
void UlxLuaCallLibrary::LuaCallAddNameParameter(UObject *context, const FName &pname) {
AIntegrationGameModeBase *mode = AIntegrationGameModeBase::GetFromContext(context);
FlxStreamBuffer &sb = mode->LuaCallGetBuffer();
CheckNotEmpty(sb);
sb.write_simple_dynamic_tag(SimpleDynamicTag::STRING);
sb.write_fname(pname);
}
void UlxLuaCallLibrary::LuaCallAddFloatParameter(UObject *context, double pfloat) {
AIntegrationGameModeBase *mode = AIntegrationGameModeBase::GetFromContext(context);
@@ -98,6 +105,7 @@ ELpxSimpleDynamicTag UlxLuaCallLibrary::LuaCallNextResultType(UObject *context)
sb.unread_to(total_reads);
switch (tag) {
case SimpleDynamicTag::STRING: return ELpxSimpleDynamicTag::String;
case SimpleDynamicTag::TOKEN: return ELpxSimpleDynamicTag::Name;
case SimpleDynamicTag::NUMBER: return ELpxSimpleDynamicTag::Float;
case SimpleDynamicTag::VECTOR: return ELpxSimpleDynamicTag::Vector;
case SimpleDynamicTag::BOOLEAN: return ELpxSimpleDynamicTag::Boolean;
@@ -110,8 +118,15 @@ FString UlxLuaCallLibrary::LuaCallGetStringResult(UObject *context) {
FlxStreamBuffer &sb = mode->LuaCallGetResult();
SimpleDynamicTag tag = sb.read_simple_dynamic_tag();
if (tag != SimpleDynamicTag::STRING) FatalBlueprintError(TEXT("expected lua to return a string"));
std::string_view s = sb.read_string_view();
return FString(s.size(), (const UTF8CHAR *)s.data());
return sb.read_fstring();
}
FName UlxLuaCallLibrary::LuaCallGetNameResult(UObject *context) {
AIntegrationGameModeBase *mode = AIntegrationGameModeBase::GetFromContext(context);
FlxStreamBuffer &sb = mode->LuaCallGetResult();
SimpleDynamicTag tag = sb.read_simple_dynamic_tag();
if (tag != SimpleDynamicTag::TOKEN) FatalBlueprintError(TEXT("expected lua to return a name"));
return sb.read_fname();
}
double UlxLuaCallLibrary::LuaCallGetFloatResult(UObject *context) {

7
Source/Integration/LuaCall.h
View File

@@ -7,6 +7,7 @@ UENUM(BlueprintType)
enum class ELpxSimpleDynamicTag : uint8 {
None,
String,
Name,
Float,
Boolean,
Vector
@@ -32,6 +33,9 @@ public:
UFUNCTION(BlueprintCallable, meta = (WorldContext = "context"), Category = "Luprex|Call Lua Function")
static void LuaCallAddStringParameter(UObject *context, const FString &pstring);
UFUNCTION(BlueprintCallable, meta = (WorldContext = "context"), Category = "Luprex|Call Lua Function")
static void LuaCallAddNameParameter(UObject *context, const FName &pname);
UFUNCTION(BlueprintCallable, meta = (WorldContext = "context"), Category = "Luprex|Call Lua Function")
static void LuaCallAddFloatParameter(UObject *context, double pfloat);
@@ -56,6 +60,9 @@ public:
UFUNCTION(BlueprintCallable, meta = (WorldContext = "context"), Category = "Luprex|Call Lua Function")
static FString LuaCallGetStringResult(UObject *context);
UFUNCTION(BlueprintCallable, meta = (WorldContext = "context"), Category = "Luprex|Call Lua Function")
static FName LuaCallGetNameResult(UObject *context);
UFUNCTION(BlueprintCallable, meta = (WorldContext = "context"), Category = "Luprex|Call Lua Function")
static double LuaCallGetFloatResult(UObject *context);

15
Source/Integration/StringDecoder.h
View File

@@ -37,6 +37,11 @@ public:
write_string(std::string_view(utf8str.Get(), utf8str.Length()));
}
void write_fname(const FName &name) {
FTCHARToUTF8 utf8str(name.ToString());
write_string(std::string_view(utf8str.Get(), utf8str.Length()));
}
void write_string(const char *s) {
write_string(std::string_view(s));
}
@@ -53,5 +58,15 @@ public:
double z = read_double();
return FVector(x, y, z);
}
FString read_fstring() {
std::string_view s = read_string_view();
return FString(s.size(), (const UTF8CHAR *)s.data());
}
FName read_fname() {
std::string_view s = read_string_view();
return FName(s.size(), (const UTF8CHAR *)s.data(), FNAME_Add);
}
};

27
luprex/cpp/core/world-core.cpp
View File

@@ -13,6 +13,16 @@
void push_simple_dynamic(lua_State *L, StreamBuffer *sb) {
SimpleDynamicTag type = sb->read_simple_dynamic_tag();
switch (type) {
case SimpleDynamicTag::STRING: {
std::string_view s = sb->read_string_view();
lua_pushlstring(L, s.data(), s.size());
break;
}
case SimpleDynamicTag::TOKEN: {
LuaToken token(sb->read_string_view());
lua_pushlightuserdata(L, token.voidvalue());
break;
}
case SimpleDynamicTag::NUMBER: {
lua_pushnumber(L, sb->read_double());
break;
@@ -21,11 +31,6 @@ void push_simple_dynamic(lua_State *L, StreamBuffer *sb) {
lua_pushboolean(L, sb->read_bool() ? 1:0);
break;
}
case SimpleDynamicTag::STRING: {
std::string_view s = sb->read_string_view();
lua_pushlstring(L, s.data(), s.size());
break;
}
case SimpleDynamicTag::VECTOR: {
double x = sb->read_double();
double y = sb->read_double();
@@ -46,14 +51,18 @@ void push_simple_dynamic(lua_State *L, StreamBuffer *sb) {
// Given a lua value, try to pack it into the stream buffer as a simple dynamic.
bool encode_simple_dynamic(LuaCoreStack &LS, LuaSlot &slot, StreamBuffer *sb) {
switch (LS.type(slot)) {
case LUA_TNUMBER:
sb->write_simple_dynamic_tag(SimpleDynamicTag::NUMBER);
sb->write_double(LS.cknumber(slot));
return true;
case LUA_TSTRING:
sb->write_simple_dynamic_tag(SimpleDynamicTag::STRING);
sb->write_string(LS.ckstringview(slot));
return true;
case LUA_TLIGHTUSERDATA:
sb->write_simple_dynamic_tag(SimpleDynamicTag::TOKEN);
sb->write_string(LS.cktoken(slot).str());
return true;
case LUA_TNUMBER:
sb->write_simple_dynamic_tag(SimpleDynamicTag::NUMBER);
sb->write_double(LS.cknumber(slot));
return true;
case LUA_TBOOLEAN:
sb->write_simple_dynamic_tag(SimpleDynamicTag::BOOLEAN);
sb->write_bool(LS.ckboolean(slot));