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history/007_earthquake/src/main/java/com/gitee/drinkjava2/frog/objects/Trap.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 com.gitee.drinkjava2.frog.Env;
+import com.gitee.drinkjava2.frog.Frog;
+
+/**
+ * Trap will kill all frogs inside of it, if frog's position has material and
+ * it's not food, frog will die
+ * 
+ * @author Yong Zhu
+ * @since 2019-08-05
+ */
+@SuppressWarnings("all")
+public class Trap implements EnvObject {
+	private static final int X1 = Env.ENV_WIDTH / 2 - 2; // 陷阱左上角
+	private static final int Y1 = 0; // 陷阱左上角
+	private static final int X2 = Env.ENV_WIDTH / 2 +2; // 陷阱右下角
+	private static final int Y2 = Env.ENV_HEIGHT -1; // 陷阱右下角
+
+	@Override
+	public void build() {
+		for (int x = X1; x <= X2; x++)
+			for (int y = Y1; y <= Y2; y++)
+				Env.setMaterial(x, y, Material.TRAP);
+	}
+
+	@Override
+	public void destory() {
+		for (int x = X1; x <= X2; x++)
+			for (int y = Y1; y <= Y2; y++)
+				Env.clearMaterial(x, y, Material.TRAP);
+	}
+
+	@Override
+	public void active() {
+
+	}
+	
+	@Override
+	public void display() {  
+	}
+
+	public static boolean inTrap(Frog f) {
+		return f.x >= X1 && f.x <= X2 && f.y >= Y1 && f.y <= Y2;
+	}
+ 
+}