colobot/src/object/task/taskinfo.cpp

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/*
* This file is part of the Colobot: Gold Edition source code
* Copyright (C) 2001-2014, Daniel Roux, EPSITEC SA & TerranovaTeam
* http://epsiteс.ch; http://colobot.info; http://github.com/colobot
*
* This program 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 3 of the License, or
* (at your option) any later version.
*
* This program 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 this program. If not, see http://gnu.org/licenses
*/
#include "object/task/taskinfo.h"
#include "graphics/engine/particle.h"
#include "object/object_manager.h"
#include "object/subclass/exchange_post.h"
#include <string.h>
// Object's constructor.
CTaskInfo::CTaskInfo(COldObject* object) : CTask(object)
, m_progress(0.0f)
, m_speed(0.0f)
, m_time(0.0f)
, m_error(false)
{
}
// Object's destructor.
CTaskInfo::~CTaskInfo()
{
}
// Management of an event.
bool CTaskInfo::EventProcess(const Event &event)
{
if (m_engine->GetPause()) return true;
if (event.type != EVENT_FRAME) return true;
if (m_error) return false;
m_progress += event.rTime*m_speed; // other advance
m_time += event.rTime;
return true;
}
// Assigns the goal was achieved.
Error CTaskInfo::Start(const char *name, float value, float power, bool send)
{
m_error = true;
m_object->SetInfoReturn(NAN);
CExchangePost* exchangePost = FindExchangePost(power);
if (exchangePost == nullptr)
{
return ERR_INFO_NULL;
}
int op = 1; // transmission impossible
if (send) // send?
{
bool infoValueSet = exchangePost->SetInfo(name, value);
if (infoValueSet)
{
op = 2; // start of reception (for terminal)
}
}
else // receive?
{
auto infoValue = exchangePost->GetInfoValue(name);
if (infoValue != boost::none)
{
m_object->SetInfoReturn(*infoValue);
op = 0; // beginning of transmission (for terminal)
}
}
exchangePost->GetAuto()->Start(op);
Math::Vector pos, goal;
if (op == 0) // transmission?
{
pos = exchangePost->GetPosition();
pos.y += 9.5f;
goal = m_object->GetPosition();
goal.y += 4.0f;
m_particle->CreateRay(pos, goal, Gfx::PARTIRAY3, Math::Point(2.0f, 2.0f), 1.0f);
}
if (op == 2) // reception?
{
goal = exchangePost->GetPosition();
goal.y += 9.5f;
pos = m_object->GetPosition();
pos.y += 4.0f;
m_particle->CreateRay(pos, goal, Gfx::PARTIRAY3, Math::Point(2.0f, 2.0f), 1.0f);
}
m_progress = 0.0f;
m_speed = 1.0f;
m_time = 0.0f;
m_error = false; // ok
return ERR_OK;
}
// Indicates whether the action is finished.
Error CTaskInfo::IsEnded()
{
if (m_engine->GetPause()) return ERR_CONTINUE;
if (m_error) return ERR_STOP;
if (m_progress < 1.0f) return ERR_CONTINUE;
m_progress = 0.0f;
Abort();
return ERR_STOP;
}
// Suddenly ends the current action.
bool CTaskInfo::Abort()
{
return true;
}
// Seeks the nearest information terminal.
CExchangePost* CTaskInfo::FindExchangePost(float power)
{
return dynamic_cast<CExchangePost*>(
CObjectManager::GetInstancePointer()->FindNearest(m_object, OBJECT_INFO, power/g_unit));
}