mirror of
https://github.com/vcmi/vcmi.git
synced 2025-06-15 00:05:02 +02:00
Entities redesign and a few ERM features
* Made most Handlers derived from CHandlerBase and moved service API there. * Declared existing Entity APIs. * Added basic script context caching * Started Lua script module * Started Lua spell effect API * Started script state persistence * Started battle info callback binding * CommitPackage removed * Extracted spells::Caster to own header; Expanded Spell API. * implemented !!MC:S, !!FU:E, !!FU:P, !!MA, !!VR:H, !!VR:C * !!BU:C, !!BU:E, !!BU:G, !!BU:M implemented * Allow use of "MC:S@varName@" to declare normal variable (technically v-variable with string key) * Re-enabled VERM macros. * !?GM0 added * !?TM implemented * Added !!MF:N * Started !?OB, !!BM, !!HE, !!OW, !!UN * Added basic support of w-variables * Added support for ERM indirect variables * Made !?FU regular trigger * !!re (ERA loop receiver) implemented * Fixed ERM receivers with zero args.
This commit is contained in:
AlexVinS
AlexVinS
288
scripting/lua/LuaStack.h
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288
scripting/lua/LuaStack.h
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/*
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* LuaStack.h, part of VCMI engine
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*
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* Authors: listed in file AUTHORS in main folder
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*
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* License: GNU General Public License v2.0 or later
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* Full text of license available in license.txt file, in main folder
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*
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*/
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#pragma once
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#include "api/Registry.h"
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#include "../../lib/GameConstants.h"
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class JsonNode;
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class int3;
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namespace scripting
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{
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namespace detail
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{
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template<typename T>
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struct IsRegularClass
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{
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static constexpr auto value = std::is_class<T>::value && !std::is_base_of<IdTag, T>::value;
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};
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template<typename T>
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struct IsIdClass
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{
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static constexpr auto value = std::is_class<T>::value && std::is_base_of<IdTag, T>::value;
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};
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}
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class LuaStack
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{
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public:
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LuaStack(lua_State * L_);
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void balance();
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void clear();
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void pushByIndex(lua_Integer index);
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void pushNil();
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void pushInteger(lua_Integer value);
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void push(bool value);
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void push(const char * value);
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void push(const std::string & value);
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void push(const JsonNode & value);
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template<typename T>
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void push(const boost::optional<T> & value)
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{
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if(value.is_initialized())
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push(value.get());
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else
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pushNil();
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}
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template<typename T, typename std::enable_if< std::is_integral<T>::value && !std::is_same<T, bool>::value, int>::type = 0>
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void push(const T value)
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{
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pushInteger(static_cast<lua_Integer>(value));
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}
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template<typename T, typename std::enable_if< std::is_enum<T>::value, int>::type = 0>
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void push(const T value)
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{
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pushInteger(static_cast<lua_Integer>(value));
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}
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void push(const int3 & value);
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template<typename T, typename std::enable_if< detail::IsIdClass<T>::value, int>::type = 0>
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void push(const T & value)
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{
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pushInteger(static_cast<lua_Integer>(value.toEnum()));
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}
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template<typename T, typename std::enable_if<detail::IsRegularClass<T>::value, int>::type = 0>
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void push(T * value)
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{
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using UData = T *;
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static auto KEY = api::TypeRegistry::get()->getKey<UData>();
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if(!value)
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{
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pushNil();
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return;
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}
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void * raw = lua_newuserdata(L, sizeof(UData));
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if(!raw)
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{
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pushNil();
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return;
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}
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UData * ptr = static_cast<UData *>(raw);
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*ptr = value;
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luaL_getmetatable(L, KEY);
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lua_setmetatable(L, -2);
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}
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template<typename T, typename std::enable_if<detail::IsRegularClass<T>::value, int>::type = 0>
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void push(std::shared_ptr<T> value)
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{
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using UData = std::shared_ptr<T>;
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static auto KEY = api::TypeRegistry::get()->getKey<UData>();
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if(!value)
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{
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pushNil();
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return;
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}
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void * raw = lua_newuserdata(L, sizeof(UData));
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if(!raw)
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{
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pushNil();
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return;
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}
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new(raw) UData(value);
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luaL_getmetatable(L, KEY);
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lua_setmetatable(L, -2);
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}
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template<typename T, typename std::enable_if<detail::IsRegularClass<T>::value, int>::type = 0>
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void push(std::unique_ptr<T> && value)
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{
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using UData = std::unique_ptr<T>;
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static auto KEY = api::TypeRegistry::get()->getKey<UData>();
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if(!value)
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{
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pushNil();
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return;
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}
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void * raw = lua_newuserdata(L, sizeof(UData));
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if(!raw)
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{
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pushNil();
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return;
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}
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new(raw) UData(std::move(value));
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luaL_getmetatable(L, KEY);
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lua_setmetatable(L, -2);
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}
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bool tryGetInteger(int position, lua_Integer & value);
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bool tryGet(int position, bool & value);
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template<typename T, typename std::enable_if< std::is_integral<T>::value && !std::is_same<T, bool>::value, int>::type = 0>
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bool tryGet(int position, T & value)
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{
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lua_Integer temp;
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if(tryGetInteger(position, temp))
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{
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value = static_cast<T>(temp);
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return true;
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}
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else
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{
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return false;
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}
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}
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template<typename T, typename std::enable_if<detail::IsIdClass<T>::value, int>::type = 0>
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bool tryGet(int position, T & value)
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{
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lua_Integer temp;
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if(tryGetInteger(position, temp))
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{
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value = T(temp);
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return true;
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}
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else
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{
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return false;
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}
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}
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template<typename T, typename std::enable_if< std::is_enum<T>::value, int>::type = 0>
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bool tryGet(int position, T & value)
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{
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lua_Integer temp;
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if(tryGetInteger(position, temp))
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{
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value = static_cast<T>(temp);
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return true;
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}
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else
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{
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return false;
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}
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}
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bool tryGet(int position, int3 & value);
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bool tryGet(int position, double & value);
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bool tryGet(int position, std::string & value);
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template<typename T, typename std::enable_if<detail::IsRegularClass<T>::value, int>::type = 0>
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bool tryGet(int position, T * & value)
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{
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return tryGetUData(position, value);
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}
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template<typename T, typename std::enable_if<detail::IsRegularClass<T>::value, int>::type = 0>
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bool tryGet(int position, std::shared_ptr<T> & value)
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{
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return tryGetUData(position, value);
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}
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template<typename U>
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bool tryGetUData(int position, U & value)
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{
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static auto KEY = api::TypeRegistry::get()->getKey<U>();
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void * raw = luaL_checkudata(L, position, KEY);
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if(!raw)
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return false;
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value = *(static_cast<U *>(raw));
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return true;
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}
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bool tryGet(int position, JsonNode & value);
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int retNil();
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int retVoid();
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STRONG_INLINE
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int retPushed()
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{
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return lua_gettop(L);
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}
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inline bool isFunction(int position)
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{
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return lua_isfunction(L, position);
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}
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inline bool isNumber(int position)
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{
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return lua_isnumber(L, position);
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}
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static int quickRetBool(lua_State * L, bool value)
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{
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lua_settop(L, 0);
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lua_pushboolean(L, value);
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return 1;
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}
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template<typename T>
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static int quickRetInt(lua_State * L, const T & value)
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{
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lua_settop(L, 0);
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lua_pushinteger(L, static_cast<int32_t>(value));
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return 1;
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}
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static int quickRetStr(lua_State * L, const std::string & value)
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{
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lua_settop(L, 0);
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lua_pushlstring(L, value.c_str(), value.size());
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return 1;
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}
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private:
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lua_State * L;
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int initialTop;
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};
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}
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