Rogue: Savage Rats, a retro-themed dungeon crawler
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rogue-savage-rats/src/mightypork/gamecore/gui/constraints/Constraints.java

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package mightypork.gamecore.gui.constraints;
import mightypork.gamecore.control.timing.Poller;
import mightypork.gamecore.input.InputSystem;
import mightypork.gamecore.render.DisplaySystem;
import mightypork.utils.math.coord.Coord;
import mightypork.utils.math.coord.Rect;
/**
* Constraint factory.<br>
* Import statically for best experience.
*
* @author MightyPork
*/
public class Constraints {
/* ================= Variables ================= */
public static final NumberConstraint _mouseX = new NumberConstraint() {
@Override
public double getValue()
{
return InputSystem.getMousePos().x;
}
};
public static final NumberConstraint _mouseY = new NumberConstraint() {
@Override
public double getValue()
{
return InputSystem.getMousePos().y;
}
};
public static final NumberConstraint _screenW = new NumberConstraint() {
@Override
public double getValue()
{
return DisplaySystem.getWidth();
}
};
public static final NumberConstraint _screenH = new NumberConstraint() {
@Override
public double getValue()
{
return DisplaySystem.getHeight();
}
};
/* ================= Arithmetics ================= */
public static NumberConstraint _min(final Object a, final Object b)
{
return new NumberConstraint() {
@Override
public double getValue()
{
return Math.min(_nv(a), _nv(b));
}
};
}
public static NumberConstraint _max(final Object a, final Object b)
{
return new NumberConstraint() {
@Override
public double getValue()
{
return Math.max(_nv(a), _nv(b));
}
};
}
public static NumberConstraint _abs(final NumberConstraint a)
{
return new NumberConstraint() {
@Override
public double getValue()
{
return Math.abs(a.getValue());
}
};
}
public static NumberConstraint _half(final NumberConstraint a)
{
return new NumberConstraint() {
@Override
public double getValue()
{
return a.getValue() / 2;
}
};
}
public static NumberConstraint _round(final NumberConstraint a)
{
return new NumberConstraint() {
@Override
public double getValue()
{
return Math.round(a.getValue());
}
};
}
public static RectConstraint _round(final RectConstraint r)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
return r.getRect().round();
}
};
}
public static NumberConstraint _ceil(final NumberConstraint a)
{
return new NumberConstraint() {
@Override
public double getValue()
{
return Math.ceil(a.getValue());
}
};
}
public static NumberConstraint _floor(final NumberConstraint a)
{
return new NumberConstraint() {
@Override
public double getValue()
{
return Math.floor(a.getValue());
}
};
}
public static NumberConstraint _neg(final NumberConstraint a)
{
return new NumberConstraint() {
@Override
public double getValue()
{
return -a.getValue();
}
};
}
public static NumberConstraint _add(final Object a, final Object b)
{
return new NumberConstraint() {
@Override
public double getValue()
{
return _nv(a) + _nv(b);
}
};
}
public static NumberConstraint _sub(final Object a, final Object b)
{
return new NumberConstraint() {
@Override
public double getValue()
{
return _nv(a) - _nv(b);
}
};
}
public static NumberConstraint _mul(final Object a, final Object b)
{
return new NumberConstraint() {
@Override
public double getValue()
{
return _nv(a) * _nv(b);
}
};
}
public static NumberConstraint _div(final Object a, final Object b)
{
return new NumberConstraint() {
@Override
public double getValue()
{
return _nv(a) / _nv(b);
}
};
}
public static NumberConstraint _percent(final Object whole, final Object percent)
{
return new NumberConstraint() {
@Override
public double getValue()
{
return _nv(whole) * (_nv(percent) / 100);
}
};
}
public static NumberConstraint _width(final RectConstraint r)
{
return new NumberConstraint() {
@Override
public double getValue()
{
return r.getRect().getSize().x;
}
};
}
public static NumberConstraint _height(final RectConstraint r)
{
return new NumberConstraint() {
@Override
public double getValue()
{
return r.getRect().getSize().y;
}
};
}
/* ================= Layout utilities ================= */
public static RectConstraint _row(final RectConstraint r, final int rows, final int index)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
final double height = r.getRect().getSize().y;
final double perRow = height / rows;
final Coord origin = r.getRect().getOrigin().add(0, perRow * index);
final Coord size = r.getRect().getSize().setY(perRow);
return Rect.fromSize(origin, size);
}
};
}
public static RectConstraint _column(final RectConstraint r, final int columns, final int index)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
final double width = r.getRect().getSize().x;
final double perCol = width / columns;
final Coord origin = r.getRect().getOrigin().add(perCol * index, 0);
final Coord size = r.getRect().getSize().setX(perCol);
return Rect.fromSize(origin, size);
}
};
}
public static RectConstraint _tile(final RectConstraint r, final int rows, final int cols, final int left, final int top)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
final double height = r.getRect().getSize().y;
final double width = r.getRect().getSize().y;
final double perRow = height / rows;
final double perCol = width / cols;
final Coord origin = r.getRect().getOrigin().add(perCol * left, perRow * (rows - top - 1));
return Rect.fromSize(origin, perCol, perRow);
}
};
}
/* ================= Rect manipulation ================= */
public static RectConstraint _shrink(RectConstraint r, Object shrink)
{
final NumberConstraint n = _n(shrink);
return _shrink(r, n, n, n, n);
}
public static RectConstraint _shrink(RectConstraint context, Object horiz, Object vert)
{
return _shrink(context, horiz, vert, horiz, vert);
}
public static RectConstraint _shrink(final RectConstraint r, final Object xmin, final Object ymin, final Object xmax, final Object ymax)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
return r.getRect().shrink(_nv(xmin), _nv(ymin), _nv(xmax), _nv(ymax));
}
};
}
public static RectConstraint _shrink_top(final RectConstraint r, final Object shrink)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
return r.getRect().shrink(0, _nv(shrink), 0, 0);
}
};
}
public static RectConstraint _shrink_bottom(final RectConstraint r, final Object shrink)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
return r.getRect().shrink(0, 0, 0, _nv(shrink));
}
};
}
public static RectConstraint _shrink_left(final RectConstraint r, final Object shrink)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
return r.getRect().shrink(_nv(shrink), 0, 0, 0);
}
};
}
public static RectConstraint _shrink_right(final RectConstraint r, final Object shrink)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
return r.getRect().shrink(0, 0, _nv(shrink), 0);
}
};
}
public static RectConstraint _grow(RectConstraint r, Object grow)
{
final NumberConstraint n = _n(grow);
return _grow(r, n, n, n, n);
}
public static RectConstraint _grow(RectConstraint r, Object horiz, Object vert)
{
return _grow(r, horiz, vert, horiz, vert);
}
public static RectConstraint _grow(final RectConstraint r, final Object xmin, final Object ymin, final Object xmax, final Object ymax)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
return r.getRect().grow(_nv(xmin), _nv(ymin), _nv(xmax), _nv(ymax));
}
};
}
public static RectConstraint _grow_up(final RectConstraint r, final Object grow)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
return r.getRect().grow(0, _nv(grow), 0, 0);
}
};
}
public static RectConstraint _grow_down(final RectConstraint r, final Object grow)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
return r.getRect().grow(0, 0, 0, _nv(grow));
}
};
}
public static RectConstraint _grow_left(final RectConstraint r, final Object grow)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
return r.getRect().grow(_nv(grow), 0, 0, 0);
}
};
}
public static RectConstraint _grow_right(final RectConstraint r, final Object grow)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
return r.getRect().grow(0, 0, _nv(grow), 0);
}
};
}
/* ================= Box creation ================= */
public static RectConstraint _box(final Object side)
{
return _box(side, side);
}
public static RectConstraint _box(final Object width, final Object height)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
//@formatter:off
return Rect.fromSize(
0,
0,
_nv(width),
_nv(height)
);
//@formatter:on
}
};
}
public static RectConstraint _box(final RectConstraint r, final Object width, final Object height)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
final Coord origin = r.getRect().getOrigin();
//@formatter:off
return Rect.fromSize(
origin.x,
origin.y,
_nv(width),
_nv(height)
);
//@formatter:on
}
};
}
public static RectConstraint _box(final RectConstraint r, final Object x, final Object y, final Object width, final Object height)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
final Coord origin = r.getRect().getOrigin();
//@formatter:off
return Rect.fromSize(
origin.x + _nv(x),
origin.y + _nv(y),
_nv(width),
_nv(height)
);
//@formatter:on
}
};
}
public static RectConstraint _box_abs(final RectConstraint r, final Object xmin, final Object ymin, final Object xmax, final Object ymax)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
final Coord origin = r.getRect().getOrigin();
//@formatter:off
return new Rect(origin.add(_nv(xmin), _nv(ymin)), origin.add(_nv(xmax), _nv(ymax)));
//@formatter:on
}
};
}
public static RectConstraint _centered(final RectConstraint r, final RectConstraint centerTo)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
final Coord size = r.getRect().getSize();
final Coord center = centerTo.getRect().getCenter();
return Rect.fromSize(center.x - size.x / 2D, center.y - size.y / 2D, size.x, size.y);
}
};
}
/**
* Center rect around given coords
*
* @param r rect
* @param x
* @param y
* @return centered
*/
public static RectConstraint _centered(final RectConstraint r, final Object x, final Object y)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
final Coord size = r.getRect().getSize();
return Rect.fromSize(_nv(x) - size.x / 2D, _nv(y) - size.y / 2D, size.x, size.y);
}
};
}
public static RectConstraint _move(final RectConstraint r, final Object x, final Object y)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
return r.getRect().add(_nv(x), _nv(y));
}
};
}
/* ================= Rect bounds ================= */
/**
* Get zero-sized rect at the center
*
* @param r context
* @return center
*/
public static RectConstraint _center(final RectConstraint r)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
return Rect.fromSize(r.getRect().getCenter(), 0, 0);
}
};
}
public static RectConstraint _left_edge(final RectConstraint r)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
return r.getRect().shrink(0, 0, r.getRect().getWidth(), 0);
}
};
}
public static RectConstraint _top_edge(final RectConstraint r)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
return r.getRect().shrink(0, 0, 0, r.getRect().getHeight());
}
};
}
public static RectConstraint _right_edge(final RectConstraint r)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
return r.getRect().shrink(r.getRect().getWidth(), 0, 0, 0);
}
};
}
public static RectConstraint _bottom_edge(final RectConstraint r)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
return r.getRect().shrink(0, r.getRect().getHeight(), 0, 0);
}
};
}
public static RectConstraint _left_top(final RectConstraint r)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
return Rect.fromSize(r.getRect().getHMinVMin(), 0, 0);
}
};
}
public static RectConstraint _left_bottom(final RectConstraint r)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
return Rect.fromSize(r.getRect().getHMinVMax(), 0, 0);
}
};
}
public static RectConstraint _right_top(final RectConstraint r)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
return Rect.fromSize(r.getRect().getHMaxVMin(), 0, 0);
}
};
}
public static RectConstraint _right_bottom(final RectConstraint r)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
return Rect.fromSize(r.getRect().getHMaxVMax(), 0, 0);
}
};
}
public static RectConstraint _center_top(final RectConstraint r)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
return Rect.fromSize(r.getRect().getCenterVMin(), 0, 0);
}
};
}
public static RectConstraint _center_bottom(final RectConstraint r)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
return Rect.fromSize(r.getRect().getCenterVMax(), 0, 0);
}
};
}
public static RectConstraint _center_left(final RectConstraint r)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
return Rect.fromSize(r.getRect().getCenterHMin(), 0, 0);
}
};
}
public static RectConstraint _center_right(final RectConstraint r)
{
return new RectConstraint() {
@Override
public Rect getRect()
{
return Rect.fromSize(r.getRect().getCenterHMax(), 0, 0);
}
};
}
/* ================= Helpers ================= */
public static RectCache _cache(final RectConstraint rc)
{
return new RectCache(rc);
}
public static RectCache _cache(final Poller poller, final RectConstraint rc)
{
return new RectCache(poller, rc);
}
/**
* Convert {@link Number} to {@link NumberConstraint} if needed
*
* @param o unknown numeric value
* @return converted
*/
public static NumberConstraint _n(final Object o)
{
if (o instanceof NumberConstraint) return (NumberConstraint) o;
if (o instanceof Number) return new NumberConstraint() {
@Override
public double getValue()
{
return ((Number) o).doubleValue();
}
};
throw new IllegalArgumentException("Invalid numeric type.");
}
/**
* Convert {@link Number} or {@link NumberConstraint} to double (current
* value)
*
* @param o unknown numeric value
* @return double value
*/
public static double _nv(final Object o)
{
return _n(o).getValue();
}
}