Differential D1490 Diff 13116 source/simulation2/components/CCmpUnitMotionManager.cpp

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source/simulation2/components/CCmpUnitMotionManager.cpp

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				/* Copyright (C) 2020 Wildfire Games.
				* This file is part of 0 A.D.
				*
				* 0 A.D. 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, either version 2 of the License, or
				* (at your option) any later version.
				*
				* 0 A.D. 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 0 A.D. If not, see <http://www.gnu.org/licenses/>.
				*/

				#include "precompiled.h"

				#include "ICmpUnitMotionManager.h"

				#include "simulation2/MessageTypes.h"
				#include "simulation2/components/ICmpUnitMotion.h"
				#include "simulation2/helpers/Spatial.h"
				#include "simulation2/system/EntityMap.h"

				class CCmpUnitMotionManager : public ICmpUnitMotionManager
				{
				protected:
				using MotionState = ICmpUnitMotion::MotionState;
				EntityMap<MotionState> m_Units;
				EntityMap<MotionState> m_FormationControllers;

				public:
				static void ClassInit(CComponentManager& componentManager)
				{
				componentManager.SubscribeToMessageType(MT_Update_MotionUnit);
				componentManager.SubscribeToMessageType(MT_Update_MotionFormation);
				}

				DEFAULT_COMPONENT_ALLOCATOR(UnitMotionManager)

				virtual void Init(const CParamNode& UNUSED(paramNode))
				{
				}

				virtual void Deinit()
				{
				}

				virtual void Serialize(ISerializer& UNUSED(serialize))
				{
				}

				virtual void Deserialize(const CParamNode& paramNode, IDeserializer& UNUSED(deserialize))
				{
				Init(paramNode);
				}

				virtual void HandleMessage(const CMessage& msg, bool UNUSED(global))
				{
				switch (msg.GetType())
				{
				case MT_Update_MotionFormation:
				{
				fixed dt = static_cast<const CMessageUpdate_MotionFormation&> (msg).turnLength;
				MoveFormations(dt);
				break;
				}
				case MT_Update_MotionUnit:
				{
				fixed dt = static_cast<const CMessageUpdate_MotionUnit&> (msg).turnLength;
				MoveUnits(dt);
				break;
				}
				}
				}

				void Register(entity_id_t ent, bool formationController);
				void Unregister(entity_id_t ent);

				void MoveUnits(fixed dt);
				void MoveFormations(fixed dt);

				void Push(EntityMap<MotionState>::value_type& a, EntityMap<MotionState>::value_type& b);
				};

				void CCmpUnitMotionManager::Register(entity_id_t ent, bool formationController)
				{
				MotionState state = {
				CFixedVector2D(),
				CFixedVector2D(),
				CmpPtr<ICmpPosition>(GetSimContext(), ent),
				CmpPtr<ICmpUnitMotion>(GetSimContext(), ent),
				false,
				false
				};
				if (!formationController)
				m_Units.insert(ent, state);
				else
				m_FormationControllers.insert(ent, state);
				}

				void CCmpUnitMotionManager::Unregister(entity_id_t ent)
				{
				EntityMap<MotionState>::iterator it = m_Units.find(ent);
				if (it != m_Units.end())
				{
				m_Units.erase(it);
				return;
				}
				it = m_FormationControllers.find(ent);
				if (it != m_FormationControllers.end())
				m_FormationControllers.erase(it);
				}

				void CCmpUnitMotionManager::MoveUnits(fixed dt)
				{
				std::vector<entity_id_t> drop;
				for (EntityMap<MotionState>::value_type& data : m_Units)
				{
				// Check that cmpUnitMotion still exists
				CmpPtr<ICmpUnitMotion> cmpUnitMotion(GetSimContext(), data.first);
				if (!cmpUnitMotion)
				drop.push_back(data.first);
				else
				{
				data.second.cmpUnitMotion = cmpUnitMotion;
				data.second.cmpUnitMotion->PreMove(data.second, dt);
				if (!data.second.cmpPosition \|\| !data.second.cmpPosition->IsInWorld())
				drop.push_back(data.first);
				}
				}
				for (entity_id_t ent : drop)
				Unregister(ent);

				for (EntityMap<MotionState>::value_type& data : m_Units)
				data.second.cmpUnitMotion->Move(data.second, dt);

				for (EntityMap<MotionState>::value_type& data1 : m_Units)
				{
				if (data1.second.pos == data1.second.initialPos)
				continue;
				for (EntityMap<MotionState>::value_type& data2 : m_Units)
				if (data1.first < data2.first)
				Push(data1, data2);
				}

				for (EntityMap<MotionState>::value_type& data : m_Units)
				data.second.cmpUnitMotion->PostMove(data.second, dt);
				}

				void CCmpUnitMotionManager::MoveFormations(fixed dt)
				{

				}

				void CCmpUnitMotionManager::Push(EntityMap<MotionState>::value_type& a, EntityMap<MotionState>::value_type& b)
				{
				CFixedVector2D offset = a.second.pos - b.second.pos;
				if (offset.CompareLength(fixed::FromInt(3)))
				return;
				offset = offset.Multiply(std::max(fixed::Zero(), fixed::FromInt(2) - offset.Length()));
				a.second.pos += offset;
				b.second.pos -= offset;
				}


				REGISTER_COMPONENT_TYPE(UnitMotionManager)