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history/005_letter_test/src/main/java/com/github/drinkjava2/frog/objects/EnvObject.java

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+/* Copyright 2018-2020 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.objects;
+
+/**
+ * EnvObject means some virtual object in Env
+ * 
+ * @author Yong Zhu
+ * @since 1.0
+ */
+public interface EnvObject {
+
+	public void build(); // 在Env中创建本身物体，指改变Env.bricks数组元素为本身物体的组成材料。只在每屏测试前调用一次
+
+	public void destory();// 从Env中清除本身物体，只在每屏测试完成后调用一次
+
+	public void active(int screen); // 每个步长都会调用一次这个方法
+}