From f155fec797de07faeab2992b9d77a347aa35d8b6 Mon Sep 17 00:00:00 2001
From: Taiyou06 <kaandindar21@gmail.com>
Date: Tue, 9 Jul 2024 00:45:05 +0300
Subject: [PATCH] math.MathHelperIntrinsicMixin, math.GenericFastMath

---
 .../math/general/GenericFastMathMixin.java    | 69 +++++++++++++++++++
 .../intrinsic/MathHelperIntrinsicMixin.java   | 54 +++++++++++++++
 src/main/resources/mixins.core.json           |  2 +
 3 files changed, 125 insertions(+)
 create mode 100644 src/main/java/net/gensokyoreimagined/nitori/mixin/math/general/GenericFastMathMixin.java
 create mode 100644 src/main/java/net/gensokyoreimagined/nitori/mixin/math/intrinsic/MathHelperIntrinsicMixin.java

diff --git a/src/main/java/net/gensokyoreimagined/nitori/mixin/math/general/GenericFastMathMixin.java b/src/main/java/net/gensokyoreimagined/nitori/mixin/math/general/GenericFastMathMixin.java
new file mode 100644
index 0000000..876f020
--- /dev/null
+++ b/src/main/java/net/gensokyoreimagined/nitori/mixin/math/general/GenericFastMathMixin.java
@@ -0,0 +1,69 @@
+package net.gensokyoreimagined.nitori.mixin.math.general;
+
+import net.minecraft.world.phys.AABB;
+import net.minecraft.util.Mth;
+import net.minecraft.world.phys.Vec3;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Overwrite;
+
+import java.util.stream.IntStream;
+
+@Mixin(Mth.class)
+public class GenericFastMathMixin {
+
+    /**
+     * @author QPCrummer
+     * @reason Slightly more optimized
+     */
+    @Overwrite
+    public static boolean rayIntersectsAABB(Vec3 origin, Vec3 direction, AABB box) {
+
+        double d = (box.minX + box.maxX) * 0.5;
+        double e = (box.maxX - box.minX) * 0.5;
+        double f = origin.x - d;
+        if (Math.abs(f) > e && f * direction.x > 0.0) {
+            return false;
+        }
+
+        double g = (box.minY + box.maxY) * 0.5;
+        double h = (box.maxY - box.minY) * 0.5;
+        double i = origin.y - g;
+        if (Math.abs(i) > h && i * direction.y >= 0.0) {
+            return false;
+        }
+
+        double j = (box.minZ + box.maxZ) * 0.5;
+        double k = (box.maxZ - box.minZ) * 0.5;
+        double l = origin.z - j;
+        if (Math.abs(l) > k && l * direction.z >= 0.0) {
+            return false;
+        }
+
+        double m = Math.abs(direction.x);
+        double n = Math.abs(direction.y);
+        double o = Math.abs(direction.z);
+        double p = direction.y * l - direction.z * i;
+        if (Math.abs(p) > h * o + k * n || Math.abs(direction.z * f - direction.x * l) > e * o + k * m) {
+            return false;
+        }
+
+        return Math.abs(direction.x * i - direction.y * f) < e * n + h * m;
+    }
+
+    /**
+     * @author QPCrummer
+     * @reason Slightly more optimized
+     */
+    @Overwrite
+    public static IntStream outFromOrigin(int seed, int lowerBound, int upperBound, int steps) {
+
+        if (steps < 1 || seed < lowerBound || seed > upperBound) {
+            return IntStream.empty();
+        }
+
+        return IntStream.iterate(seed, i -> {
+            int nextValue = i + (i <= seed ? steps : -steps);
+            return nextValue >= lowerBound && nextValue <= upperBound ? nextValue : i;
+        });
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/net/gensokyoreimagined/nitori/mixin/math/intrinsic/MathHelperIntrinsicMixin.java b/src/main/java/net/gensokyoreimagined/nitori/mixin/math/intrinsic/MathHelperIntrinsicMixin.java
new file mode 100644
index 0000000..eaff0f7
--- /dev/null
+++ b/src/main/java/net/gensokyoreimagined/nitori/mixin/math/intrinsic/MathHelperIntrinsicMixin.java
@@ -0,0 +1,54 @@
+package net.gensokyoreimagined.nitori.mixin.math.intrinsic;
+
+import net.minecraft.util.Mth;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Overwrite;
+
+// Credit to Gale patch #0018
+@Mixin(Mth.class)
+public class MathHelperIntrinsicMixin {
+    /**
+     * @author QPCrummer
+     * @reason Use Intrinsic instead
+     */
+    @Overwrite
+    public static int floor(float value) {
+        return (int) Math.floor(value);
+    }
+
+    /**
+     * @author QPCrummer
+     * @reason Use Intrinsic instead
+     */
+    @Overwrite
+    public static int floor(double value) {
+        return (int) Math.floor(value);
+    }
+
+    /**
+     * @author QPCrummer
+     * @reason Use Intrinsic instead
+     */
+    @Overwrite
+    public static int ceil(float value) {
+        return (int) Math.ceil(value);
+    }
+
+    /**
+     * @author QPCrummer
+     * @reason Use Intrinsic instead
+     */
+    @Overwrite
+    public static int ceil(double value) {
+        return (int) Math.ceil(value);
+    }
+
+    /**
+     * @author QPCrummer
+     * @reason Use Intrinsic instead
+     */
+    @Overwrite
+    public static double absMax(double a, double b) {
+        return Math.max(Math.abs(a), Math.abs(b));
+    }
+}
\ No newline at end of file
diff --git a/src/main/resources/mixins.core.json b/src/main/resources/mixins.core.json
index a5f0c81..da85d52 100755
--- a/src/main/resources/mixins.core.json
+++ b/src/main/resources/mixins.core.json
@@ -45,6 +45,8 @@
     "math.fast_util.AxisCycleDirectionMixin$BackwardMixin",
     "math.fast_util.DirectionMixin",
     "math.vec.FastMathVec3DMixin",
+    "math.general.GenericFastMathMixin",
+    "math.intrinsic.MathHelperIntrinsicMixin",
     "collections.entity_filtering.TypeFilterableListMixin",
     "collections.entity_by_type.TypeFilterableListMixin",
     "collections.chunk_tickets.SortedArraySetMixin",