package io.gitlab.jfronny.quickmeth.mixin;

import io.gitlab.jfronny.quickmeth.MathUtil;
import net.minecraft.util.math.MathHelper;
import net.minecraft.util.math.noise.PerlinNoiseSampler;
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(PerlinNoiseSampler.class)
public class MixinPerlinNoiseSampler {
    @Shadow @Final
    public double originX;
    @Shadow @Final
    public double originY;
    @Shadow @Final
    public double originZ;

    @Overwrite
    public double sample(double x, double y, double z, double d, double e) {
        x = MathUtil.BoxedInvert(x);
        y = MathUtil.BoxedInvert(y);
        z = MathUtil.BoxedInvert(z);

        double f = x + this.originX;
        double g = y + this.originY;
        double h = z + this.originZ;
        int i = MathHelper.floor(f);
        int j = MathHelper.floor(g);
        int k = MathHelper.floor(h);
        double l = f - (double)i;
        double m = g - (double)j;
        double n = h - (double)k;
        double o = MathHelper.perlinFade(l);
        double p = MathHelper.perlinFade(m);
        double q = MathHelper.perlinFade(n);
        double t;
        if (d != 0.0D) {
            double r = Math.min(e, m);
            t = (double)MathHelper.floor(r / d) * d;
        } else {
            t = 0.0D;
        }

        return MathUtil.BoxedInvert(((PerlinNoiseSampler)(Object)this).sample(i, j, k, l, m - t, n, o, p, q));
    }
}