实现下雪、雪花效果
package effect;
import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
import com.badlogic.gdx.backends.lwjgl3.Lwjgl3ApplicationConfiguration;
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.Sprite;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.utils.ScreenUtils;
import org.junit.jupiter.api.Test;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Random;
/**
* @author lingkang
* created by 2023/11/14
*/
public class SnowflakeDemo extends ApplicationAdapter {
@Test
public void test() {
Lwjgl3ApplicationConfiguration config = new Lwjgl3ApplicationConfiguration();
config.setForegroundFPS(30);
config.setTitle("yzcy");
config.setWindowedMode(800, 600);
new Lwjgl3Application(this, config);
}
protected SpriteBatch batch;
protected Texture texture;
Random random = new Random();
protected List<SnowflakeSprite> sprites = new ArrayList<>(300);
protected long count = 0;
@Override
public void create() {
batch = new SpriteBatch();
// 雪花图片, 20x20大小
texture = new Texture(Gdx.files.classpath("img/bg/xh.png"));
}
@Override
public void render() {
ScreenUtils.clear(Color.WHITE);
batch.begin();
Iterator<SnowflakeSprite> iterator = sprites.iterator();
while (iterator.hasNext()) {
SnowflakeSprite sprite = iterator.next();
batch.draw(sprite, sprite.x, sprite.y, sprite.getWidth(), sprite.getHeight());
sprite.y = sprite.y - sprite.speed;// 下落
sprite.x = sprite.x + sprite.move;
if (sprite.y < -20) {
iterator.remove();
}
}
batch.end();
// 控制生成速度
if (count > 2)
generate();
else
count++;
}
private void generate() {
count = 0;
SnowflakeSprite sprite = new SnowflakeSprite(texture);
float size = random.nextFloat(5f, 22f);
sprite.setSize(size, size);
sprite.x = random.nextInt(800);
sprite.y = 630;
sprite.speed = random.nextInt(3, 7);
sprite.move = random.nextInt(-1, 1);
// 设置模糊
// sprite.setColor(1,0,0,random.nextFloat(0.01f,1f));
sprites.add(sprite);
}
class SnowflakeSprite extends Sprite {
public SnowflakeSprite(Texture texture) {
super(texture);
}
public int x;
public int y;
public int move;
public int speed;
}
@Override
public void dispose() {
batch.dispose();
texture.dispose();
}
}
依赖
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>top.lingkang</groupId>
<artifactId>yzcy</artifactId>
<packaging>jar</packaging>
<version>1.0.0</version>
<properties>
<maven.compiler.source>17</maven.compiler.source>
<maven.compiler.target>17</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<gdx.version>1.12.0</gdx.version>
</properties>
<dependencies>
<!-- https://mvnrepository.com/artifact/com.badlogicgames.gdx/gdx -->
<dependency>
<groupId>com.badlogicgames.gdx</groupId>
<artifactId>gdx</artifactId>
<version>${gdx.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.badlogicgames.gdx/gdx-backend-lwjgl3 -->
<dependency>
<groupId>com.badlogicgames.gdx</groupId>
<artifactId>gdx-backend-lwjgl3</artifactId>
<version>${gdx.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.badlogicgames.gdx/gdx-platform -->
<dependency>
<groupId>com.badlogicgames.gdx</groupId>
<artifactId>gdx-platform</artifactId>
<version>${gdx.version}</version>
<classifier>natives-desktop</classifier>
</dependency>
<!-- https://mvnrepository.com/artifact/com.badlogicgames.gdx/gdx-freetype -->
<dependency>
<groupId>com.badlogicgames.gdx</groupId>
<artifactId>gdx-freetype</artifactId>
<version>${gdx.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.badlogicgames.gdx/gdx-freetype-platform -->
<dependency>
<groupId>com.badlogicgames.gdx</groupId>
<artifactId>gdx-freetype-platform</artifactId>
<version>${gdx.version}</version>
<classifier>natives-desktop</classifier>
</dependency>
<!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-api -->
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<version>5.10.1</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>2.0.9</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-simple -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-simple</artifactId>
<version>2.0.9</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.30</version>
<scope>provided</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/com.alibaba.fastjson2/fastjson2 -->
<dependency>
<groupId>com.alibaba.fastjson2</groupId>
<artifactId>fastjson2</artifactId>
<version>2.0.42</version>
</dependency>
<!-- https://mvnrepository.com/artifact/cn.hutool/hutool-core -->
<dependency>
<groupId>cn.hutool</groupId>
<artifactId>hutool-core</artifactId>
<version>5.8.22</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<source>17</source>
<target>17</target>
<!-- 编译后保持方法形参名称不变 -->
<!--<compilerArgs>
<arg>-parameters</arg>
</compilerArgs>-->
</configuration>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>tencent</id>
<name>tencent</name>
<layout>default</layout>
<url>http://mirrors.cloud.tencent.com/nexus/repository/maven-public/</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
<releases>
<enabled>true</enabled>
</releases>
</repository>
<repository>
<id>nexus1</id>
<name>Nexus1</name>
<layout>default</layout>
<url>https://oss.sonatype.org/content/repositories/snapshots</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
<releases>
<enabled>false</enabled>
</releases>
</repository>
<repository>
<id>nexus</id>
<name>Nexus</name>
<layout>default</layout>
<url>https://s01.oss.sonatype.org/content/repositories/snapshots</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
<releases>
<enabled>false</enabled>
</releases>
</repository>
<repository>
<id>aliyunmaven</id>
<url>https://maven.aliyun.com/repository/public</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
</project>