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Add: [Script] Native priority queue; useful e.g. for pathfinders.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| /* | ||
| * This file is part of OpenTTD. | ||
| * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2. | ||
| * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | ||
| * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
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| /* THIS FILE IS AUTO-GENERATED; PLEASE DO NOT ALTER MANUALLY */ | ||
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| #include "../script_priorityqueue.hpp" | ||
| #include "../template/template_priorityqueue.hpp.sq" | ||
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| template <> const char *GetClassName<ScriptPriorityQueue, ST_AI>() { return "AIPriorityQueue"; } | ||
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| void SQAIPriorityQueue_Register(Squirrel *engine) | ||
| { | ||
| DefSQClass<ScriptPriorityQueue, ST_AI> SQAIPriorityQueue("AIPriorityQueue"); | ||
| SQAIPriorityQueue.PreRegister(engine); | ||
| SQAIPriorityQueue.AddConstructor<void (ScriptPriorityQueue::*)(), 1>(engine, "x"); | ||
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| SQAIPriorityQueue.DefSQAdvancedMethod(engine, &ScriptPriorityQueue::Insert, "Insert"); | ||
| SQAIPriorityQueue.DefSQAdvancedMethod(engine, &ScriptPriorityQueue::Pop, "Pop"); | ||
| SQAIPriorityQueue.DefSQAdvancedMethod(engine, &ScriptPriorityQueue::Peek, "Peek"); | ||
| SQAIPriorityQueue.DefSQAdvancedMethod(engine, &ScriptPriorityQueue::Exists, "Exists"); | ||
| SQAIPriorityQueue.DefSQAdvancedMethod(engine, &ScriptPriorityQueue::Clear, "Clear"); | ||
| SQAIPriorityQueue.DefSQMethod(engine, &ScriptPriorityQueue::IsEmpty, "IsEmpty", 1, "x"); | ||
| SQAIPriorityQueue.DefSQMethod(engine, &ScriptPriorityQueue::Count, "Count", 1, "x"); | ||
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| SQAIPriorityQueue.PostRegister(engine); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| /* | ||
| * This file is part of OpenTTD. | ||
| * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2. | ||
| * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | ||
| * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
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| /* THIS FILE IS AUTO-GENERATED; PLEASE DO NOT ALTER MANUALLY */ | ||
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| #include "../script_priorityqueue.hpp" | ||
| #include "../template/template_priorityqueue.hpp.sq" | ||
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| template <> const char *GetClassName<ScriptPriorityQueue, ST_GS>() { return "GSPriorityQueue"; } | ||
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| void SQGSPriorityQueue_Register(Squirrel *engine) | ||
| { | ||
| DefSQClass<ScriptPriorityQueue, ST_GS> SQGSPriorityQueue("GSPriorityQueue"); | ||
| SQGSPriorityQueue.PreRegister(engine); | ||
| SQGSPriorityQueue.AddConstructor<void (ScriptPriorityQueue::*)(), 1>(engine, "x"); | ||
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| SQGSPriorityQueue.DefSQAdvancedMethod(engine, &ScriptPriorityQueue::Insert, "Insert"); | ||
| SQGSPriorityQueue.DefSQAdvancedMethod(engine, &ScriptPriorityQueue::Pop, "Pop"); | ||
| SQGSPriorityQueue.DefSQAdvancedMethod(engine, &ScriptPriorityQueue::Peek, "Peek"); | ||
| SQGSPriorityQueue.DefSQAdvancedMethod(engine, &ScriptPriorityQueue::Exists, "Exists"); | ||
| SQGSPriorityQueue.DefSQAdvancedMethod(engine, &ScriptPriorityQueue::Clear, "Clear"); | ||
| SQGSPriorityQueue.DefSQMethod(engine, &ScriptPriorityQueue::IsEmpty, "IsEmpty", 1, "x"); | ||
| SQGSPriorityQueue.DefSQMethod(engine, &ScriptPriorityQueue::Count, "Count", 1, "x"); | ||
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| SQGSPriorityQueue.PostRegister(engine); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| /* | ||
| * This file is part of OpenTTD. | ||
| * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2. | ||
| * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | ||
| * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
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| /** @file script_priorityqueue.cpp Implementation of ScriptPriorityQueue. */ | ||
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| #include "../../stdafx.h" | ||
| #include "script_priorityqueue.hpp" | ||
| #include "script_error.hpp" | ||
| #include "../squirrel_helper.hpp" | ||
| #include "../script_instance.hpp" | ||
| #include "../../debug.h" | ||
| #include <algorithm> | ||
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| #include "../../safeguards.h" | ||
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| static bool operator==(const ScriptPriorityQueue::PriorityItem &lhs, const HSQOBJECT &rhs) | ||
| { | ||
| return lhs.second._type == rhs._type && lhs.second._unVal.raw == rhs._unVal.raw; | ||
| } | ||
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| ScriptPriorityQueue::~ScriptPriorityQueue() | ||
| { | ||
| /* Release reference to stored objects. */ | ||
| auto inst = ScriptObject::GetActiveInstance(); | ||
| if (!inst->InShutdown()) { | ||
| for (auto &i : this->queue) inst->ReleaseSQObject(const_cast<HSQOBJECT *>(&i.second)); | ||
| } | ||
| } | ||
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| SQInteger ScriptPriorityQueue::Insert(HSQUIRRELVM vm) | ||
| { | ||
| HSQOBJECT item; | ||
| int64 priority; | ||
| sq_resetobject(&item); | ||
| sq_getstackobj(vm, 2, &item); | ||
| sq_getinteger(vm, 3, &priority); | ||
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| sq_addref(vm, &item); // Keep object alive. | ||
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| this->queue.emplace_back(priority, item); | ||
| std::push_heap(this->queue.begin(), this->queue.end(), this->comp); | ||
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| return SQConvert::Return(vm, true); | ||
| } | ||
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| SQInteger ScriptPriorityQueue::Pop(HSQUIRRELVM vm) | ||
| { | ||
| if (this->IsEmpty()) { | ||
| ScriptObject::SetLastError(ScriptError::ERR_PRECONDITION_FAILED); | ||
| sq_pushnull(vm); | ||
| return 1; | ||
| } | ||
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| HSQOBJECT item = this->queue.front().second; | ||
| std::pop_heap(this->queue.begin(), this->queue.end(), this->comp); | ||
| this->queue.pop_back(); | ||
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| /* Store the object on the Squirrel stack before releasing it to make sure the ref count can't drop to zero. */ | ||
| auto ret = SQConvert::Return(vm, item); | ||
| sq_release(vm, &item); | ||
| return ret; | ||
| } | ||
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| SQInteger ScriptPriorityQueue::Peek(HSQUIRRELVM vm) | ||
| { | ||
| if (this->IsEmpty()) { | ||
| ScriptObject::SetLastError(ScriptError::ERR_PRECONDITION_FAILED); | ||
| sq_pushnull(vm); | ||
| return 1; | ||
| } | ||
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| return SQConvert::Return(vm, this->queue.front().second); | ||
| } | ||
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| SQInteger ScriptPriorityQueue::Exists(HSQUIRRELVM vm) | ||
| { | ||
| HSQOBJECT item; | ||
| sq_resetobject(&item); | ||
| sq_getstackobj(vm, 2, &item); | ||
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| return SQConvert::Return(vm, std::find(this->queue.cbegin(), this->queue.cend(), item) != this->queue.cend()); | ||
| } | ||
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| SQInteger ScriptPriorityQueue::Clear(HSQUIRRELVM vm) | ||
| { | ||
| /* Release reference to stored objects. */ | ||
| for (auto &i : this->queue) sq_release(vm, const_cast<HSQOBJECT *>(&i.second)); | ||
| this->queue.clear(); | ||
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| return 0; | ||
| } | ||
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| bool ScriptPriorityQueue::IsEmpty() | ||
| { | ||
| return this->queue.empty(); | ||
| } | ||
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| SQInteger ScriptPriorityQueue::Count() | ||
| { | ||
| return (SQInteger)this->queue.size(); | ||
| } |
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