Rogue: Savage Rats, a retro-themed dungeon crawler
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rogue-savage-rats/src/mightypork/rogue/screens/main_menu/MenuButton.java

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1.7 KiB

package mightypork.rogue.screens.main_menu;
import mightypork.gamecore.gui.AlignX;
import mightypork.gamecore.gui.components.ClickableComponent;
import mightypork.gamecore.gui.components.painters.TextPainter;
import mightypork.gamecore.render.fonts.GLFont;
import mightypork.rogue.Res;
import mightypork.util.constraints.num.Num;
import mightypork.util.constraints.num.mutable.NumVar;
import mightypork.util.constraints.vect.Vect;
import mightypork.util.constraints.vect.mutable.VectVar;
import mightypork.util.math.color.Color;
class MenuButton extends ClickableComponent {
private static GLFont font = Res.getFont("main_menu_button");
private final TextPainter painter;
private final VectVar offset = Vect.makeVar();
private final Vect offsetActive = Vect.make(this.height().perc(-5), Num.ZERO);
private final Color color;
private final double ALPHA_OFF = 0.6;
private final double ALPHA_ON = 1;
private final double SH_ALPHA_OFF = 0.1;
private final double SH_ALPHA_ON = 0.5;
private final NumVar alphaMul = Num.makeVar(ALPHA_OFF);
private final NumVar alphaMulSh = Num.makeVar(SH_ALPHA_OFF);
public MenuButton(String text, Color color)
{
this.color = color.withAlpha(alphaMul);
this.painter = new TextPainter(font, AlignX.CENTER, this.color, text);
this.painter.setRect(this.shrink(this.height().perc(8)).move(offset));
this.painter.setShadow(Color.BLACK.withAlpha(alphaMulSh), height().div(24).toVectXY());
}
@Override
protected void renderComponent()
{
if (isMouseOver()) {
offset.setTo(offsetActive);
alphaMul.setTo(ALPHA_ON);
alphaMulSh.setTo(SH_ALPHA_ON);
} else {
offset.setTo(Vect.ZERO);
alphaMul.setTo(ALPHA_OFF);
alphaMulSh.setTo(SH_ALPHA_OFF);
}
painter.render();
}
}