package coffee.liz.ecs.math;

import static java.lang.Math.sqrt;

import lombok.Builder;
import lombok.Data;
import lombok.Getter;
import lombok.RequiredArgsConstructor;

import java.util.function.Function;

/** Float impl of {@link Vec2}. */
@Getter
@RequiredArgsConstructor
@Data
@Builder
public final class Vec2f implements Vec2<Float> {
	/** X coordinate. */
	private final Float x;

	/** Y coordinate. */
	private final Float y;

	@Override
	public Vec2<Float> plus(final Vec2<Float> other) {
		return new Vec2f(x + other.getX(), y + other.getY());
	}

	@Override
	public Vec2<Float> minus(final Vec2<Float> other) {
		return new Vec2f(x - other.getX(), y - other.getY());
	}

	@Override
	public Vec2<Float> scale(final Float scaleX, final Float scaleY) {
		return new Vec2f(x * scaleX, y * scaleY);
	}

	@Override
	public float length() {
		return (float) sqrt(x * x + y * y);
	}

	@Override
	public Vec2<Float> floatValue() {
		return this;
	}

	@Override
	public Vec2<Float> transform(final Function<Float, Float> xTransform, final Function<Float, Float> yTransform) {
		return new Vec2f(xTransform.apply(getX()), yTransform.apply(getY()));
	}

	@Override
	public Vec2<Integer> intValue() {
		return Vec2i.builder().x(this.x.intValue()).y(this.y.intValue()).build();
	}

	/** Zero float vec */
	public static Vec2<Float> ZERO = Vec2f.builder().x(0f).y(0f).build();
}