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// * This file is part of the COLOBOT source code
// * Copyright (C) 2001-2008, Daniel ROUX & EPSITEC SA, www.epsitec.ch
// *
// * 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://www.gnu.org/licenses/.
#include "object/task/taskgungoal.h"
#include "object/object.h"
// Object's constructor.
CTaskGunGoal::CTaskGunGoal(CObject* object) : CTask(object)
{
m_aimImpossible = false;
}
// Object's destructor.
CTaskGunGoal::~CTaskGunGoal()
{
}
// Management of an event.
bool CTaskGunGoal::EventProcess(const Event &event)
{
float dir;
if ( m_engine->GetPause() ) return true;
if ( event.type != EVENT_FRAME ) return true;
m_progress += event.rTime*m_speed;
if ( m_progress < 1.0f )
{
dir = m_initialDirV + (m_finalDirV-m_initialDirV)*m_progress;
}
else
{
dir = m_finalDirV;
}
m_object->SetGunGoalV(dir);
if ( m_progress < 1.0f )
{
dir = m_initialDirH + (m_finalDirH-m_initialDirH)*m_progress;
}
else
{
dir = m_finalDirH;
}
m_object->SetGunGoalH(dir);
return true;
}
// Assigns the goal was achieved.
Error CTaskGunGoal::Start(float dirV, float dirH)
{
float speedV, speedH;
int i;
m_initialDirV = m_object->GetGunGoalV();
m_object->SetGunGoalV(dirV);
m_finalDirV = m_object->GetGunGoalV(); // possible direction
m_object->SetGunGoalV(m_initialDirV); // gives initial direction
if ( m_finalDirV == m_initialDirV )
{
speedV = 100.0f;
}
else
{
speedV = 1.0f/(fabs(m_finalDirV-m_initialDirV)*1.0f);
}
m_initialDirH = m_object->GetGunGoalH();
m_object->SetGunGoalH(dirH);
m_finalDirH = m_object->GetGunGoalH(); // possible direction
m_object->SetGunGoalH(m_initialDirH); // gives initial direction
if ( m_finalDirH == m_initialDirH )
{
speedH = 100.0f;
}
else
{
speedH = 1.0f/(fabs(m_finalDirH-m_initialDirH)*1.0f);
}
m_speed = Math::Min(speedV, speedH);
if ( m_finalDirV != m_initialDirV ||
m_finalDirH != m_initialDirH )
{
i = m_sound->Play(SOUND_MANIP, m_object->GetPosition(0), 0.3f, 1.5f, true);
m_sound->AddEnvelope(i, 0.3f, 1.5f, 1.0f/m_speed, SOPER_STOP);
}
m_progress = 0.0f;
// direction was constrainted, hence resulting in impossible move
if (dirV != m_finalDirV || dirH != m_finalDirH)
{
m_aimImpossible = true;
}
return ERR_OK;
}
// Indicates whether the action is finished.
Error CTaskGunGoal::IsEnded()
{
if ( m_engine->GetPause() ) return ERR_CONTINUE;
if ( m_initialDirV == m_finalDirV &&
m_initialDirH == m_finalDirH )
{
if ( m_aimImpossible )
return ERR_AIM_IMPOSSIBLE;
else
return ERR_STOP;
}
if ( m_progress < 1.0f ) return ERR_CONTINUE;
m_object->SetGunGoalV(m_finalDirV);
m_object->SetGunGoalH(m_finalDirH);
Abort();
if ( m_aimImpossible )
{
return ERR_AIM_IMPOSSIBLE;
}
return ERR_STOP;
}
// Suddenly ends the current action.
bool CTaskGunGoal::Abort()
{
return true;
}
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