From 87e39c258a7390f01d9d6e024dd85d826ddc8d2d Mon Sep 17 00:00:00 2001
From: ppz6le8u7 <3580438051@qq.com>
Date: Sun, 25 Jun 2023 15:27:21 +0800
Subject: [PATCH] ADD file via upload

---
 Bird.java | 76 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100644 Bird.java

diff --git a/Bird.java b/Bird.java
new file mode 100644
index 0000000..2c3d22f
--- /dev/null
+++ b/Bird.java
@@ -0,0 +1,76 @@
+package com;
+
+import javax.imageio.ImageIO;
+import java.awt.image.BufferedImage;
+import java.io.IOException;
+
+public class Bird {
+	int x, y;
+	int width, height;
+	BufferedImage bird_image; // 小鸟图片
+
+	BufferedImage[] images; // 小鸟所有状态的图片
+
+	public Bird() {
+		images = new BufferedImage[8];
+		// 循环将小鸟所有图片存入数组
+		for (int i = 0; i < images.length; i++) {
+			try {
+				images[i] = ImageIO.read(Bird.class.getResourceAsStream(i + ".png"));
+			} catch (IOException e) {
+				throw new RuntimeException(e);
+			}
+		}
+
+		bird_image = BirdGame.bird_img;
+		width = BirdGame.bird_img.getWidth();
+		height = BirdGame.bird_img.getHeight();
+		x = 110;
+		y = 240;
+	}
+
+	int index;
+
+	// 小鸟飞的方法
+	public void fly() {
+		bird_image = images[index % images.length];
+		index++;
+	}
+
+	int g = 6; // 重力加速度
+	double t = 0.15; // 下落时间0.18
+	double v = 0; // 初速度
+	double h = 0; // 下落的距离
+
+	// 小鸟下落一次
+	public void down() {
+		h = v * t + g * t * t / 2; // 下落的距离
+		v = v + g * t; // 末速度
+		y = y + (int) h;
+	}
+
+	// 小鸟向上飞
+	public void up() {
+		v = -26; // 向上飞给一个初速度
+	}
+
+	// 小鸟撞地面的方法
+	public boolean hitGround(Ground ground) {
+		boolean isHit = this.y + this.height >= ground.y + 30;
+		return isHit;
+	}
+
+	// 小鸟撞柱子的方法
+	public boolean hitColumn(Column column) {
+		// 撞水平方向的柱子
+		boolean b1 = this.x + this.width >= column.x;
+		boolean b2 = this.x <= column.x + column.width;
+		// 撞垂直方向的柱子
+		boolean b3 = this.y + 25 <= column.y + column.height / 2 - column.gap / 2;
+		boolean b4 = this.y - 30 + this.height >= column.y + column.height / 2 + column.gap / 2;
+		// 满足b1,b2 证明水平方向与柱子相撞
+		// b1 b2 b3 同时满足 撞的是上面的柱子
+		// b1 b2 b4 同时满足 撞的是下面的柱子
+		return b1 && b2 && (b3 || b4);
+	}
+}