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#include "StarUtilityLuaBindings.hpp"
#include "StarJsonExtra.hpp"
#include "StarLuaGameConverters.hpp"
#include "StarUuid.hpp"
#include "StarRandom.hpp"
#include "StarPerlin.hpp"
#include "StarXXHash.hpp"
#include "StarLogging.hpp"
#include "StarInterpolation.hpp"
namespace Star {
template <>
struct LuaConverter<RandomSource> : LuaUserDataConverter<RandomSource> {};
template <>
struct LuaUserDataMethods<RandomSource> {
static LuaMethods<RandomSource> make() {
LuaMethods<RandomSource> methods;
methods.registerMethod("init",
[](RandomSource& randomSource, Maybe<uint64_t> seed) {
if (seed)
randomSource.init(*seed);
else
randomSource.init();
});
methods.registerMethod("addEntropy",
[](RandomSource& randomSource, Maybe<uint64_t> seed) {
if (seed)
randomSource.addEntropy(*seed);
else
randomSource.addEntropy();
});
methods.registerMethodWithSignature<uint32_t, RandomSource&>("randu32", mem_fn(&RandomSource::randu32));
methods.registerMethodWithSignature<uint64_t, RandomSource&>("randu64", mem_fn(&RandomSource::randu64));
methods.registerMethodWithSignature<int32_t, RandomSource&>("randi32", mem_fn(&RandomSource::randi32));
methods.registerMethodWithSignature<int64_t, RandomSource&>("randi64", mem_fn(&RandomSource::randi64));
methods.registerMethod("randf",
[](RandomSource& randomSource, Maybe<float> arg1, Maybe<float> arg2) {
if (arg1 && arg2)
return randomSource.randf(*arg1, *arg2);
else
return randomSource.randf();
});
methods.registerMethod("randd",
[](RandomSource& randomSource, Maybe<double> arg1, Maybe<double> arg2) {
if (arg1 && arg2)
return randomSource.randd(*arg1, *arg2);
else
return randomSource.randd();
});
methods.registerMethodWithSignature<bool, RandomSource&>("randb", mem_fn(&RandomSource::randb));
methods.registerMethod("randInt",
[](RandomSource& randomSource, int64_t arg1, Maybe<int64_t> arg2) {
if (arg2)
return randomSource.randInt(arg1, *arg2);
else
return randomSource.randInt(arg1);
});
methods.registerMethod("randUInt",
[](RandomSource& randomSource, uint64_t arg1, Maybe<uint64_t> arg2) {
if (arg2)
return randomSource.randUInt(arg1, *arg2);
else
return randomSource.randUInt(arg1);
});
return methods;
}
};
template <>
struct LuaConverter<PerlinF> : LuaUserDataConverter<PerlinF> {};
template <>
struct LuaUserDataMethods<PerlinF> {
static LuaMethods<PerlinF> make() {
LuaMethods<PerlinF> methods;
methods.registerMethod("get",
[](PerlinF& perlinF, float x, Maybe<float> y, Maybe<float> z) {
if (y && z)
return perlinF.get(x, *y, *z);
else if (y)
return perlinF.get(x, *y);
else
return perlinF.get(x);
});
return methods;
}
};
String LuaBindings::formatLua(String const& string, List<LuaValue> const& args) {
auto argsIt = args.begin();
auto argsEnd = args.end();
auto popArg = [&argsIt, &argsEnd]() -> LuaValue {
if (argsIt == argsEnd)
return LuaNil;
return *argsIt++;
};
auto stringIt = string.begin();
auto stringEnd = string.end();
String result;
while (stringIt != stringEnd) {
if (*stringIt == '%') {
auto next = stringIt;
++next;
if (next == stringEnd)
throw StarException("No specifier following '%'");
else if (*next == '%')
result += '%';
else if (*next == 's')
result += toString(popArg());
else
throw StarException::format("Improper lua log format specifier %%%c", *next);
++next;
stringIt = next;
} else {
result += *stringIt++;
}
}
return result;
}
LuaCallbacks LuaBindings::makeUtilityCallbacks() {
LuaCallbacks callbacks;
callbacks.registerCallback("nrand", UtilityCallbacks::nrand);
callbacks.registerCallback("makeUuid", UtilityCallbacks::makeUuid);
callbacks.registerCallback("logInfo", UtilityCallbacks::logInfo);
callbacks.registerCallback("logWarn", UtilityCallbacks::logWarn);
callbacks.registerCallback("logError", UtilityCallbacks::logError);
callbacks.registerCallback("setLogMap", UtilityCallbacks::setLogMap);
callbacks.registerCallback("printJson", UtilityCallbacks::printJson);
callbacks.registerCallback("print", UtilityCallbacks::print);
callbacks.registerCallback("interpolateSinEase", UtilityCallbacks::interpolateSinEase);
callbacks.registerCallback("replaceTags", UtilityCallbacks::replaceTags);
callbacks.registerCallback("jsonMerge", [](Json const& a, Json const& b) { return jsonMerge(a, b); });
callbacks.registerCallback("jsonQuery", [](Json const& json, String const& path, Json const& def) { return json.query(path, def); });
callbacks.registerCallback("makeRandomSource",
[](Maybe<uint64_t> seed) {
if (seed)
return RandomSource(*seed);
else
return RandomSource();
});
callbacks.registerCallback("makePerlinSource", [](Json const& config) { return PerlinF(config); });
auto hash64LuaValues = [](LuaVariadic<LuaValue> const& values) -> uint64_t {
XXHash64 hash;
for (auto const& value : values) {
if (auto b = value.ptr<LuaBoolean>())
xxHash64Push(hash, *b);
else if (auto i = value.ptr<LuaInt>())
xxHash64Push(hash, *i);
else if (auto f = value.ptr<LuaFloat>())
xxHash64Push(hash, *f);
else if (auto s = value.ptr<LuaString>())
xxHash64Push(hash, s->ptr());
else
throw LuaException("Unhashable lua type passed to staticRandomXX binding");
}
return hash.digest();
};
callbacks.registerCallback("staticRandomI32",
[hash64LuaValues](LuaVariadic<LuaValue> const& hashValues) { return (int32_t)hash64LuaValues(hashValues); });
callbacks.registerCallback("staticRandomI32Range",
[hash64LuaValues](int32_t min, int32_t max, LuaVariadic<LuaValue> const& hashValues) {
if (max < min)
throw LuaException("Maximum bound in staticRandomI32Range must be >= minimum bound!");
uint64_t denom = (uint64_t)(-1) / ((uint64_t)(max - min) + 1);
return (int32_t)(hash64LuaValues(hashValues) / denom + min);
});
callbacks.registerCallback("staticRandomDouble",
[hash64LuaValues](LuaVariadic<LuaValue> const& hashValues) {
return (hash64LuaValues(hashValues) & 0x7fffffffffffffff) / 9223372036854775808.0;
});
callbacks.registerCallback("staticRandomDoubleRange",
[hash64LuaValues](double min, double max, LuaVariadic<LuaValue> const& hashValues) {
if (max < min)
throw LuaException("Maximum bound in staticRandomDoubleRange must be >= minimum bound!");
return (hash64LuaValues(hashValues) & 0x7fffffffffffffff) / 9223372036854775808.0 * (max - min) + min;
});
return callbacks;
}
double LuaBindings::UtilityCallbacks::nrand(Maybe<double> const& stdev, Maybe<double> const& mean) {
return Random::nrandd(stdev.value(1.0), mean.value(0));
}
String LuaBindings::UtilityCallbacks::makeUuid() {
return Uuid().hex();
}
void LuaBindings::UtilityCallbacks::logInfo(String const& str, LuaVariadic<LuaValue> const& args) {
Logger::log(LogLevel::Info, formatLua(str, args).utf8Ptr());
}
void LuaBindings::UtilityCallbacks::logWarn(String const& str, LuaVariadic<LuaValue> const& args) {
Logger::log(LogLevel::Warn, formatLua(str, args).utf8Ptr());
}
void LuaBindings::UtilityCallbacks::logError(String const& str, LuaVariadic<LuaValue> const& args) {
Logger::log(LogLevel::Error, formatLua(str, args).utf8Ptr());
}
void LuaBindings::UtilityCallbacks::setLogMap(String const& key, String const& value, LuaVariadic<LuaValue> const& args) {
LogMap::set(key, formatLua(value, args));
}
String LuaBindings::UtilityCallbacks::printJson(Json const& arg, Maybe<int> pretty) {
return arg.repr(pretty.value());
}
String LuaBindings::UtilityCallbacks::print(LuaValue const& value) {
return toString(value);
}
LuaValue LuaBindings::UtilityCallbacks::interpolateSinEase(LuaEngine& engine, double offset, LuaValue const& value1, LuaValue const& value2) {
if (auto floatValue1 = engine.luaMaybeTo<double>(value1)) {
auto floatValue2 = engine.luaMaybeTo<double>(value2);
return sinEase(offset, *floatValue1, *floatValue2);
} else {
return engine.luaFrom<Vec2F>(sinEase(offset, engine.luaTo<Vec2F>(value1), engine.luaTo<Vec2F>(value2)));
}
}
String LuaBindings::UtilityCallbacks::replaceTags(String const& str, StringMap<String> const& tags) {
return str.replaceTags(tags);
}
}
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