package io.gitlab.jfronny.slyde.mixin;

import net.minecraft.client.options.DoubleOption;
import net.minecraft.util.math.MathHelper;
import org.spongepowered.asm.mixin.Final;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.Overwrite;
import org.spongepowered.asm.mixin.Shadow;

@Mixin(DoubleOption.class)
public class DoubleOptionMixin {
    @Shadow @Final protected float step;

    @Shadow @Final protected double min;

    @Shadow protected double max;

    /**
     * @author JFronny
     */
    @Overwrite
    public double getRatio(double value) {
        return (this.adjust(value) - this.min) / (this.max - this.min);
    }
    /**
     * @author JFronny
     */
    @Overwrite
    public double getValue(double ratio) {
        return this.adjust(MathHelper.lerp(ratio, this.min, this.max));
    }
    /**
     * @author JFronny
     */
    @Overwrite
    private double adjust(double value) {
        if (this.step > 0.0F) {
            value = this.step * (float)Math.round(value / (double)this.step);
        }
        return value;
    }
}