Create more Vec implementations

src/main/java/net/minestom/server/utils/incubator/Vec.java

@@ -8,17 +8,22 @@ import java.util.function.DoubleUnaryOperator;
 import java.util.function.UnaryOperator;
 
 public interface Vec {
-    Vec ZERO = new VecImpl(0);
-    Vec ONE = new VecImpl(1);
+    Vec ZERO = vec(0);
+    Vec ONE = vec(1);
 
     @Contract(pure = true)
     static @NotNull Vec vec(double x, double y, double z) {
-        return new VecImpl(x, y, z);
+        return new VecImpl.Vec3(x, y, z);
+    }
+
+    @Contract(pure = true)
+    static @NotNull Vec vec(double x, double z) {
+        return new VecImpl.Tuple(x, z);
     }
 
     @Contract(pure = true)
     static @NotNull Vec vec(double value) {
-        return new VecImpl(value);
+        return new VecImpl.Single(value);
     }
 
     @Contract(pure = true)

src/main/java/net/minestom/server/utils/incubator/VecImpl.java

@@ -2,36 +2,96 @@ package net.minestom.server.utils.incubator;
 
 import org.jetbrains.annotations.NotNull;
 
-class VecImpl implements Vec {
-    private final double x, y, z;
+class VecImpl {
 
-    public VecImpl(double x, double y, double z) {
-        this.x = x;
-        this.y = y;
-        this.z = z;
+    static class Vec3 implements Vec {
+        private final double x, y, z;
+
+        Vec3(double x, double y, double z) {
+            this.x = x;
+            this.y = y;
+            this.z = z;
+        }
+
+        public Vec3(double value) {
+            this(value, value, value);
+        }
+
+        @Override
+        public @NotNull Vec with(double x, double y, double z) {
+            return new Vec3(x, y, z);
+        }
+
+        @Override
+        public double x() {
+            return x;
+        }
+
+        @Override
+        public double y() {
+            return y;
+        }
+
+        @Override
+        public double z() {
+            return z;
+        }
     }
 
-    public VecImpl(double value) {
-        this(value, value, value);
+    static class Tuple implements Vec {
+        private final double x, z;
+
+        Tuple(double x, double z) {
+            this.x = x;
+            this.z = z;
+        }
+
+        @Override
+        public @NotNull Vec with(double x, double y, double z) {
+            return new Vec3(x, y, z);
+        }
+
+        @Override
+        public double x() {
+            return x;
+        }
+
+        @Override
+        public double y() {
+            return 0;
+        }
+
+        @Override
+        public double z() {
+            return z;
+        }
     }
 
-    @Override
-    public @NotNull Vec with(double x, double y, double z) {
-        return new VecImpl(x, y, z);
-    }
+    static class Single implements Vec {
+        private final double value;
 
-    @Override
-    public double x() {
-        return x;
-    }
+        Single(double value) {
+            this.value = value;
+        }
 
-    @Override
-    public double y() {
-        return y;
-    }
+        @Override
+        public @NotNull Vec with(double x, double y, double z) {
+            return new Vec3(x, y, z);
+        }
 
-    @Override
-    public double z() {
-        return z;
+        @Override
+        public double x() {
+            return value;
+        }
+
+        @Override
+        public double y() {
+            return value;
+        }
+
+        @Override
+        public double z() {
+            return value;
+        }
     }
 }