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history/006_snake/src/main/java/com/gitee/drinkjava2/frog/Frog.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.gitee.drinkjava2.frog;
+
+import java.awt.Graphics;
+import java.io.FileInputStream;
+
+import javax.imageio.ImageIO;
+
+import com.gitee.drinkjava2.frog.egg.Egg;
+import com.gitee.drinkjava2.frog.objects.Material;
+
+/**
+ * Snake has similar brain like Frog, snake eat frog <br>
+ * 蛇是青蛙的子类，区别是： 蛇只能看到青蛙，并将其当作一个单个象素点的食物， 青蛙能看到真的食物(Food)和蛇
+ * 
+ * @since 1.0
+ */
+public class Frog extends Animal {
+
+	public Frog(Egg egg) {
+		super(egg);
+		try {
+			animalImage = ImageIO.read(new FileInputStream(Application.CLASSPATH + "frog.png"));
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+	}
+
+	@Override
+	public void kill() {// 杀死蛙
+		this.alive = false;
+		Env.clearMaterial(x, y, Material.FROG_TAG);
+	}
+
+	@Override
+	public void show(Graphics g) {// 显示蛇的图象
+		if (!alive)
+			return;
+		g.drawImage(animalImage, x - 8, y - 8, 16, 16, null);// 减去坐标，保证蛇嘴巴显示在当前x,y处
+	}
+}