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history/009a_fish3d/src/main/java/com/gitee/drinkjava2/frog/objects/Food.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.gitee.drinkjava2.frog.objects;
+
+import static com.gitee.drinkjava2.frog.Env.ENV_HEIGHT;
+import static com.gitee.drinkjava2.frog.Env.ENV_WIDTH;
+import static com.gitee.drinkjava2.frog.Env.FOOD_QTY;
+
+import com.gitee.drinkjava2.frog.Env;
+import com.gitee.drinkjava2.frog.util.RandomUtils;
+
+/**
+ * Food randomly scatter on Env
+ * 生成食物（静态食物或苍蝇，苍蝇如果Env中FOOD_CAN_MOVE=true,会向四个方向移动)
+ * 
+ * @author Yong Zhu
+ * @since 1.0
+ */
+public class Food implements EnvObject {
+
+    @Override
+    public void build() {
+        for (int i = 0; i < FOOD_QTY; i++) // 生成食物
+            Env.setMaterial(RandomUtils.nextInt(ENV_WIDTH), RandomUtils.nextInt(ENV_HEIGHT), Material.FOOD);
+    }
+
+    @Override
+    public void destory() {
+        for (int i = 0; i < ENV_WIDTH; i++) {// 清除食物
+            for (int j = 0; j < ENV_HEIGHT; j++)
+                Env.clearMaterial(i, j, Material.FOOD);
+        }
+    }
+
+    @Override
+    public void active() {
+    }
+
+}