diff --git a/src/main/java/org/auioc/mcmod/arnicalib/game/input/KeyDownRule.java b/src/main/java/org/auioc/mcmod/arnicalib/game/input/KeyDownRule.java
new file mode 100644
index 00000000..e2ef18fc
--- /dev/null
+++ b/src/main/java/org/auioc/mcmod/arnicalib/game/input/KeyDownRule.java
@@ -0,0 +1,27 @@
+package org.auioc.mcmod.arnicalib.game.input;
+
+import org.auioc.mcmod.arnicalib.base.function.VoidPredicate;
+import net.minecraftforge.api.distmarker.Dist;
+import net.minecraftforge.api.distmarker.OnlyIn;
+
+@OnlyIn(Dist.CLIENT)
+public enum KeyDownRule implements VoidPredicate {
+
+    ALWAYS(() -> true), NEVER(() -> false), //
+    ON_SHIFT_KEY_DOWN(KeyboardUtils::isShiftKeyDown), //
+    ON_CTRL_KEY_DOWN(KeyboardUtils::isCtrlKeyDown), //
+    ON_ALT_KEY_DOWN(KeyboardUtils::isAltKeyDown), //
+    ON_SPACE_KEY_DOWN(KeyboardUtils::isSpaceKeyDown);
+
+    private final VoidPredicate predicate;
+
+    private KeyDownRule(VoidPredicate predicate) {
+        this.predicate = predicate;
+    }
+
+    @Override
+    public boolean test() {
+        return predicate.test();
+    }
+
+}
diff --git a/src/main/java/org/auioc/mcmod/arnicalib/game/input/KeyboardUtils.java b/src/main/java/org/auioc/mcmod/arnicalib/game/input/KeyboardUtils.java
new file mode 100644
index 00000000..86ac6eaf
--- /dev/null
+++ b/src/main/java/org/auioc/mcmod/arnicalib/game/input/KeyboardUtils.java
@@ -0,0 +1,34 @@
+package org.auioc.mcmod.arnicalib.game.input;
+
+import org.lwjgl.glfw.GLFW;
+import com.mojang.blaze3d.platform.InputConstants;
+import net.minecraft.client.Minecraft;
+import net.minecraftforge.api.distmarker.Dist;
+import net.minecraftforge.api.distmarker.OnlyIn;
+
+@OnlyIn(Dist.CLIENT)
+public class KeyboardUtils {
+
+    private static final Minecraft MC = Minecraft.getInstance();
+
+    public static boolean isKeyDown(int key) {
+        return InputConstants.isKeyDown(MC.getWindow().getWindow(), key);
+    }
+
+    public static boolean isShiftKeyDown() {
+        return isKeyDown(GLFW.GLFW_KEY_LEFT_SHIFT) || isKeyDown(GLFW.GLFW_KEY_RIGHT_SHIFT);
+    }
+
+    public static boolean isCtrlKeyDown() {
+        return isKeyDown(GLFW.GLFW_KEY_LEFT_CONTROL) || isKeyDown(GLFW.GLFW_KEY_RIGHT_CONTROL);
+    }
+
+    public static boolean isAltKeyDown() {
+        return isKeyDown(GLFW.GLFW_KEY_LEFT_ALT) || isKeyDown(GLFW.GLFW_KEY_RIGHT_ALT);
+    }
+
+    public static boolean isSpaceKeyDown() {
+        return isKeyDown(GLFW.GLFW_KEY_SPACE);
+    }
+
+}