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//-----------------------------------------------------------------------------
/** @file libpentobi_base/GembloQGeometry.cpp
@author Markus Enzenberger
@copyright GNU General Public License version 3 or later */
//-----------------------------------------------------------------------------
#include "GembloQGeometry.h"
#include <map>
#include <memory>
#include "libboardgame_base/MathUtil.h"
namespace libpentobi_base {
using namespace std;
using libboardgame_base::mod;
//-----------------------------------------------------------------------------
GembloQGeometry::GembloQGeometry(unsigned nu_players)
{
unsigned height;
if (nu_players == 2)
{
height = 22;
m_edge = 4;
}
else if (nu_players == 3)
{
height = 26;
m_edge = 6;
}
else
{
LIBBOARDGAME_ASSERT(nu_players == 4);
height = 28;
m_edge = 13;
}
Geometry::init(2 * height, height);
}
const GembloQGeometry& GembloQGeometry::get(unsigned nu_players)
{
static map<unsigned, shared_ptr<GembloQGeometry>> s_geometry;
auto pos = s_geometry.find(nu_players);
if (pos != s_geometry.end())
return *pos->second;
auto geometry = make_shared<GembloQGeometry>(nu_players);
s_geometry.insert({nu_players, geometry});
return *geometry;
}
auto GembloQGeometry::get_adj_coord(int x, int y) const -> AdjCoordList
{
AdjCoordList l;
l.push_back({x + 1, y});
l.push_back({x - 1, y});
switch (get_point_type(x, y))
{
case 0:
case 3:
l.push_back({x, y - 1});
break;
case 1:
case 2:
l.push_back({x, y + 1});
break;
}
return l;
}
auto GembloQGeometry::get_diag_coord(int x, int y) const -> DiagCoordList
{
// See Geometry::get_diag_coord() about advantageous ordering of the list
DiagCoordList l;
switch (get_point_type(x, y))
{
case 0:
l.push_back({x + 2, y - 1});
l.push_back({x - 1, y + 1});
l.push_back({x - 1, y - 1});
l.push_back({x, y + 1});
l.push_back({x + 3, y});
l.push_back({x - 2, y + 1});
l.push_back({x + 1, y + 1});
l.push_back({x + 3, y - 1});
l.push_back({x - 2, y});
l.push_back({x + 2, y});
l.push_back({x + 1, y - 1});
break;
case 1:
l.push_back({x - 2, y + 1});
l.push_back({x + 1, y - 1});
l.push_back({x + 1, y + 1});
l.push_back({x, y - 1});
l.push_back({x - 3, y});
l.push_back({x + 2, y - 1});
l.push_back({x - 1, y - 1});
l.push_back({x - 3, y + 1});
l.push_back({x + 2, y});
l.push_back({x - 2, y});
l.push_back({x - 1, y + 1});
break;
case 2:
l.push_back({x - 2, y - 1});
l.push_back({x + 3, y + 1});
l.push_back({x - 1, y + 1});
l.push_back({x, y - 1});
l.push_back({x + 3, y});
l.push_back({x + 2, y + 1});
l.push_back({x + 1, y - 1});
l.push_back({x - 2, y});
l.push_back({x + 2, y});
l.push_back({x - 1, y - 1});
l.push_back({x + 1, y + 1});
break;
case 3:
l.push_back({x - 3, y - 1});
l.push_back({x + 2, y + 1});
l.push_back({x + 1, y - 1});
l.push_back({x, y + 1});
l.push_back({x - 3, y});
l.push_back({x - 2, y - 1});
l.push_back({x - 1, y + 1});
l.push_back({x + 2, y});
l.push_back({x - 2, y});
l.push_back({x + 1, y + 1});
l.push_back({x - 1, y - 1});
break;
}
return l;
}
unsigned GembloQGeometry::get_period_x() const
{
return 4;
}
unsigned GembloQGeometry::get_period_y() const
{
return 2;
}
unsigned GembloQGeometry::get_point_type(int x, int y) const
{
return mod(x + 2 * static_cast<int>(y % 2 != 0), 4);
}
bool GembloQGeometry::init_is_onboard(unsigned x, unsigned y) const
{
auto width = get_width();
auto height = get_height();
unsigned dy = min(y, height - y - 1);
unsigned min_x = (width - 4 * m_edge) / 2 - 1 > 2 * dy ?
(width - 4 * m_edge) / 2 - 1 - 2 * dy : 0;
unsigned max_x = width - min_x - 1;
return x >= min_x && x <= max_x;
}
//-----------------------------------------------------------------------------
} // namespace libpentobi_base
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