Kayne Ruse
126 lines
3.6 KiB
C++
126 lines
3.6 KiB
C++
/* Copyright: (c) Kayne Ruse 2014
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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*
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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*
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* 3. This notice may not be removed or altered from any source
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* distribution.
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*/
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#include "region_pager_lua.hpp"
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#include "utility.hpp"
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#include <stdexcept>
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Region* RegionPagerLua::LoadRegion(int x, int y) {
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//load the region if possible
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//something to work on
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regionList.emplace_front(x, y);
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//API hook
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lua_getglobal(luaState, "region");
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lua_getfield(luaState, -1, "load");
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lua_pushlightuserdata(luaState, ®ionList.front());
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lua_pushstring(luaState, directory.c_str());
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if (lua_pcall(luaState, 2, 1, 0) != LUA_OK) {
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throw(std::runtime_error(std::string() + "Lua error: " + lua_tostring(luaState, -1) ));
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}
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//success or failure
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if (!lua_toboolean(luaState, -1)) {
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lua_pop(luaState, 2);
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regionList.pop_front();
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return nullptr;
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}
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lua_pop(luaState, 2);
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return ®ionList.front();
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}
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Region* RegionPagerLua::SaveRegion(int x, int y) {
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//find & save the region
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Region* ptr = FindRegion(x, y);
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if (ptr) {
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//API hook
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lua_getglobal(luaState, "region");
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lua_getfield(luaState, -1, "save");
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lua_pushlightuserdata(luaState, ptr);
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lua_pushstring(luaState, directory.c_str());
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if (lua_pcall(luaState, 2, 0, 0) != LUA_OK) {
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throw(std::runtime_error(std::string() + "Lua error: " + lua_tostring(luaState, -1) ));
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}
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lua_pop(luaState, 1);
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}
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return ptr;
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}
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Region* RegionPagerLua::CreateRegion(int x, int y) {
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if (FindRegion(x, y)) {
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throw(std::logic_error("Cannot overwrite an existing region"));
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}
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//something to work on
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regionList.emplace_front(x, y);
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//API hook
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lua_getglobal(luaState, "region");
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lua_getfield(luaState, -1, "create");
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lua_pushlightuserdata(luaState, ®ionList.front());
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//TODO: parameters
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if (lua_pcall(luaState, 1, 0, 0) != LUA_OK) {
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throw(std::runtime_error(std::string() + "Lua error: " + lua_tostring(luaState, -1) ));
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}
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lua_pop(luaState, 1);
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return ®ionList.front();;
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}
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void RegionPagerLua::UnloadRegion(int x, int y) {
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lua_getglobal(luaState, "region");
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regionList.remove_if([&](Region& region) -> bool {
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if (region.GetX() == x && region.GetY() == y) {
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//API hook
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lua_getfield(luaState, -1, "unload");
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lua_pushlightuserdata(luaState, ®ion);
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lua_pushstring(luaState, directory.c_str());
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if (lua_pcall(luaState, 2, 0, 0) != LUA_OK) {
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throw(std::runtime_error(std::string() + "Lua error: " + lua_tostring(luaState, -1) ));
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}
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return true;
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}
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return false;
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});
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lua_pop(luaState, 1);
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}
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void RegionPagerLua::UnloadAll() {
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lua_getglobal(luaState, "region");
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for (auto& it : regionList) {
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//API hook
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lua_getfield(luaState, -1, "unload");
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lua_pushlightuserdata(luaState, &it);
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lua_pushstring(luaState, directory.c_str());
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if (lua_pcall(luaState, 2, 0, 0) != LUA_OK) {
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throw(std::runtime_error(std::string() + "Lua error: " + lua_tostring(luaState, -1) ));
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}
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}
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lua_pop(luaState, 1);
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regionList.clear();
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} |