From a3608bc696de42ef8708b07da3147f042273d403 Mon Sep 17 00:00:00 2001
From: 13766800364 <13766800364@qq.com>
Date: Thu, 9 Oct 2025 16:11:44 +0800
Subject: [PATCH] Add File

---
 .../drinkjava2/frog/brain/organ/MoveLeft.java | 27 +++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 history/004_seasaw/src/main/java/com/github/drinkjava2/frog/brain/organ/MoveLeft.java

diff --git a/history/004_seasaw/src/main/java/com/github/drinkjava2/frog/brain/organ/MoveLeft.java b/history/004_seasaw/src/main/java/com/github/drinkjava2/frog/brain/organ/MoveLeft.java
new file mode 100644
index 0000000..04e5f2e
--- /dev/null
+++ b/history/004_seasaw/src/main/java/com/github/drinkjava2/frog/brain/organ/MoveLeft.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2018 the original author or authors. 
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by
+ * applicable law or agreed to in writing, software distributed under the
+ * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
+ * OF ANY KIND, either express or implied. See the License for the specific
+ * language governing permissions and limitations under the License.
+ */
+package com.github.drinkjava2.frog.brain.organ;
+
+import com.github.drinkjava2.frog.Frog;
+import com.github.drinkjava2.frog.brain.Organ;
+
+/**
+ * Move left frog 1 unit if outputs of nerve cells active in this zone
+ */
+public class MoveLeft extends Organ {
+	private static final long serialVersionUID = 1L;
+
+	@Override
+	public void active(Frog f) {
+		if (outputActive(f))
+			f.x--;
+	}
+}