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history/005_letter_test/src/main/java/com/github/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.github.drinkjava2.frog.objects;
+
+import static com.github.drinkjava2.frog.Env.ENV_HEIGHT;
+import static com.github.drinkjava2.frog.Env.ENV_WIDTH;
+import static com.github.drinkjava2.frog.Env.FOOD_QTY;
+import static com.github.drinkjava2.frog.Env.bricks;
+
+import com.github.drinkjava2.frog.util.RandomUtils;
+
+/**
+ * Food randomly scatter on Env
+ * 
+ * @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
+			bricks[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++)
+				if (bricks[i][j] == Material.FOOD)
+					bricks[i][j] = 0;
+		}
+	}
+
+	@Override
+	public void active(int screen) {
+		// Food do not have any active
+	}
+
+}