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history/003b_simple/src/main/java/com/github/drinkjava2/frog/brain/organ/Eyes.java

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+/*
+ * 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.Env;
+import com.github.drinkjava2.frog.Frog;
+import com.github.drinkjava2.frog.brain.Organ;
+import com.github.drinkjava2.frog.util.RandomUtils;
+
+/**
+ * Eye can only see 4 direction
+ * 
+ * @author Yong Zhu
+ * @since 1.0
+ */
+public class Eyes {
+
+	public static class SeeUp extends Organ {// 只能看到上方食物
+		private static final long serialVersionUID = 1L;
+		public int seeDistance; // 眼睛能看到的距离
+
+		@Override
+		public void initFrog(Frog f) { // 仅在Frog生成时这个方法会调用一次
+			if (!initilized) {
+				initilized = true;
+				seeDistance = 8;
+			}
+		}
+
+		@Override
+		public Organ[] vary() {
+			seeDistance=RandomUtils.varyInLimit(seeDistance, 5, 20);
+			if (RandomUtils.percent(5)) { // 可视距离有5%的机率变异
+				seeDistance = seeDistance + 1 - 2 * RandomUtils.nextInt(2);
+				if (seeDistance < 1)
+					seeDistance = 1;
+				if (seeDistance > 50)
+					seeDistance = 50;
+			}
+			return new Organ[] { this };
+		}
+
+		@Override
+		public void active(Frog f) {
+			for (int i = 1; i < seeDistance; i++)
+				if (Env.foundAnyThing(f.x, f.y + i)) {
+					activeInput(f, 30);
+					return;
+				}
+		}
+	}
+
+	public static class SeeDown extends SeeUp {// 只能看到下方食物
+		private static final long serialVersionUID = 1L;
+
+		@Override
+		public void active(Frog f) {
+			for (int i = 1; i < seeDistance; i++)
+				if (Env.foundAnyThing(f.x, f.y - i)) {
+					activeInput(f, 30);
+					return;
+				}
+		}
+	}
+
+	public static class SeeLeft extends SeeUp {// 只能看到左方食物
+		private static final long serialVersionUID = 1L;
+
+		@Override
+		public void active(Frog f) {
+			for (int i = 1; i < seeDistance; i++)
+				if (Env.foundAnyThing(f.x - i, f.y)) {
+					activeInput(f, 30);
+					return;
+				}
+		}
+	}
+
+	public static class SeeRight extends SeeUp {// 只能看到右方食物
+		private static final long serialVersionUID = 1L;
+
+		@Override
+		public void active(Frog f) {
+			for (int i = 1; i < seeDistance; i++)
+				if (Env.foundAnyThing(f.x + i, f.y)) {
+					activeInput(f, 30);
+					return;
+				}
+		}
+	}
+
+}