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/***************************************************************************
kbdiagonalshotstrategy.cpp
----------
Developers: (c) 2001 Kevin Krammer <kevin.krammer@gmx.at>
***************************************************************************/
/***************************************************************************
* *
* 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 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "kbdiagonalshotstrategy.h"
KBDiagonalShotStrategy::KBDiagonalShotStrategy(KBStrategy *tqparent) : KBStrategy(tqparent)
{
m_column = 0;
m_row = 0;
m_vertical = 0;
m_horizontal = 0;
}
const TQPoint KBDiagonalShotStrategy::nextShot()
{
if(hasMoreShots())
return TQPoint(m_column, m_row);
return TQPoint(0,0);
}
bool KBDiagonalShotStrategy::advance()
{
while (m_fieldRect.tqcontains(m_column, m_row))
{
if(enemyFieldStateAt(m_column, m_row) != KBStrategy::SHOT)
return true;
m_column += m_horizontal;
m_row += m_vertical;
}
return false;
}
bool KBDiagonalShotStrategy::hasMoreShots()
{
return advance();
}
void KBDiagonalShotStrategy::shotAt(const TQPoint &pos)
{
m_prevShots.append(pos);
}
void KBDiagonalShotStrategy::startAt(int col, int row, Direction dir)
{
m_column = col;
m_row = row;
switch(dir)
{
case LEFTUP:
m_vertical = -1;
m_horizontal = -1;
break;
case LEFTDOWN:
m_vertical = 1;
m_horizontal = -1;
break;
case RIGHTUP:
m_vertical = -1;
m_horizontal = 1;
break;
case RIGHTDOWN:
m_vertical = 1;
m_horizontal = 1;
break;
default:
m_vertical = 0;
m_horizontal = 0;
break;
}
}
TQPoint KBDiagonalShotStrategy::endPoint()
{
int row = m_row;
int col = m_column;
if(m_vertical == 0 || m_horizontal == 0)
return TQPoint(col, row);
while(m_fieldRect.tqcontains(col, row))
{
row += m_vertical;
col += m_horizontal;
}
row -= m_vertical;
col -= m_horizontal;
return TQPoint(col, row);
}
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