Added some hash strats

LoliKingdom · Apr 26, 2021 · fd51093 · fd51093
1 parent 62cdeda
commit fd51093
Showing 1 changed file with 73 additions and 0 deletions.
diff --git a/src/main/java/zone/rong/loliasm/api/HashingStrategies.java b/src/main/java/zone/rong/loliasm/api/HashingStrategies.java
@@ -0,0 +1,73 @@
+package zone.rong.loliasm.api;
+
+import it.unimi.dsi.fastutil.Hash;
+import net.minecraft.client.renderer.block.model.ItemCameraTransforms;
+import net.minecraft.client.renderer.block.model.ItemTransformVec3f;
+
+import java.util.Arrays;
+import java.util.Objects;
+
+public class HashingStrategies {
+
+    public static final Hash.Strategy<Object> IDENTITY_OBJECT_HASH = new Hash.Strategy<Object>() {
+        @Override
+        public int hashCode(Object o) {
+            return System.identityHashCode(o);
+        }
+        @Override
+        public boolean equals(Object a, Object b) {
+            return a == b;
+        }
+    };
+
+    public static final Hash.Strategy<Object> GENERIC_OBJECT_HASH = new Hash.Strategy<Object>() {
+        @Override
+        public int hashCode(Object o) {
+            return Objects.hashCode(o);
+        }
+        @Override
+        public boolean equals(Object o1, Object o2) {
+            return Objects.equals(o1, o2);
+        }
+    };
+
+    public static final Hash.Strategy<float[][]> FLOAT_2D_ARRAY_HASH = new Hash.Strategy<float[][]>() {
+        @Override
+        public int hashCode(float[][] o) {
+            return Arrays.deepHashCode(o);
+        }
+        @Override
+        public boolean equals(float[][] a, float[][] b) {
+            return Arrays.deepEquals(a, b);
+        }
+    };
+
+    public static final Hash.Strategy<ItemCameraTransforms> ITEM_CAMERA_TRANSFORMS_HASH = new Hash.Strategy<ItemCameraTransforms>() {
+        @Override
+        public int hashCode(ItemCameraTransforms ict) {
+            int hash = vectorHash(ict.firstperson_left);
+            hash = hash * 31 + vectorHash(ict.firstperson_right);
+            hash = hash * 31 + vectorHash(ict.fixed);
+            hash = hash * 31 + vectorHash(ict.ground);
+            hash = hash * 31 + vectorHash(ict.gui);
+            hash = hash * 31 + vectorHash(ict.head);
+            hash = hash * 31 + vectorHash(ict.thirdperson_left);
+            return hash * 31 + vectorHash(ict.thirdperson_right);
+        }
+        @Override
+        public boolean equals(ItemCameraTransforms ict1, ItemCameraTransforms ict2) {
+            if (ict1 == null) {
+                return ict2 == null;
+            } else {
+                return Objects.equals(ict1.firstperson_left, ict2.firstperson_left) && Objects.equals(ict1.firstperson_right, ict2.firstperson_right) && Objects.equals(ict1.fixed, ict2.fixed) && Objects.equals(ict1.ground, ict2.ground) && Objects.equals(ict1.gui, ict2.gui) && Objects.equals(ict1.head, ict2.head) && Objects.equals(ict1.thirdperson_left, ict2.thirdperson_left) && Objects.equals(ict1.thirdperson_right, ict2.thirdperson_right);
+            }
+        }
+    };
+
+    private static int vectorHash(ItemTransformVec3f vector) {
+        int hash = ((Float.floatToIntBits(vector.rotation.getX())) * 31 + Float.floatToIntBits(vector.rotation.getY())) * 31 + Float.floatToIntBits(vector.rotation.getZ());
+        hash = hash * 31 + ((Float.floatToIntBits(vector.scale.getX())) * 31 + Float.floatToIntBits(vector.scale.getY())) * 31 + Float.floatToIntBits(vector.scale.getZ());
+        return hash * 31 + ((Float.floatToIntBits(vector.translation.getX())) * 31 + Float.floatToIntBits(vector.translation.getY())) * 31 + Float.floatToIntBits(vector.translation.getZ());
+    }
+
+}