package jaze.gdx;
import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
import com.badlogic.gdx.backends.lwjgl.LwjglApplicationConfiguration;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.math.MathUtils;
import com.badlogic.gdx.scenes.scene2d.Actor;
import com.badlogic.gdx.scenes.scene2d.Stage;
import com.badlogic.gdx.scenes.scene2d.ui.Image;
import com.badlogic.gdx.utils.Align;
import com.jicent.ui.button.Button;
import com.jicent.ui.button.Button.InputListenerEx;
import com.jicent.ui.button.ScaleChangeBtn;
public class Test_ZhuanPan extends ApplicationAdapter implements InputListenerEx{
private Stage st;
//背景
Image imgBg;
//
boolean c , f = false;
private float rotateStep;
private float keepTime=120;
private float keepCount;
private boolean start;
private int state;
private static final int acc=0;
private static final int keep=1;
private static final int reduce=2;
private int itemNum=8;//奖品数量
private float resultRotation;
@Override
public void create() {
//初始化
st = new Stage();
//添加 按钮 点击事件
Gdx.input.setInputProcessor(st); //给舞台 注册 点击事件的 监听
//背景 图
imgBg = new Image(new Texture(Gdx.files.internal("image/cjBg.png")));
imgBg.setPosition(280, 445,Align.center).addTo(st);
imgBg.setOrigin(Align.center);
//抽奖 按钮
Button bt = new ScaleChangeBtn(new Texture(Gdx.files.internal("image/cj.png")));
bt.setPosition(280, 441,Align.center);
bt.addListener(this);
st.addActor(bt);
}
/**
* 每帧 刷新
*/
@Override
public void render() {
// 清除 界面
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
//清除 后界面的背景色
Gdx.gl.glClearColor(0.5f, 0.8f, 0.5f, 0.8f);
st.act();
st.draw();
if (start) {
switch (state) {
case acc://加速过程
rotateStep+=0.1f;
if (rotateStep>10) {
rotateStep=10;
state=keep;
}
break;
case keep://保持旋转
keepCount++;
if (keepCount>keepTime) {
keepCount=0;
state=reduce;
//计算从10->0时，每帧减少0.1，累计减少的角度是多少
float allRotation=add(rotateStep);
imgBg.setRotation(resultRotation+allRotation);
}
break;
case reduce://减速
rotateStep-=0.1f;
if (rotateStep<0) {
rotateStep=0;
state=-1;
start=false;
}
break;
default:
break;
}
imgBg.rotateBy(-rotateStep);
}
}
public float add(float num){
if (num<0) {
return 0;
}else {
float b=add(num-0.1f);
return num+b;
}
}
/**
* 程序入口
* @param args
*/
public static void main(String[] args){
LwjglApplicationConfiguration lcf = new LwjglApplicationConfiguration();
lcf.width = 540;
lcf.height = 960;
new LwjglApplication(new Test_ZhuanPan(), lcf);
}
@Override
public boolean touchDown(Actor actor, float x, float y, int pointer) {
return true;
}
@Override
public void touchUp(Actor actor, float x, float y, int pointer) {
start=true;
state=acc;
float result=MathUtils.perc();
float startPerc=0;
float gap=1f/itemNum;
int resultItem=1;
while (result>startPerc+gap) {//计算出最终结果在哪个item的范围内部
startPerc+=gap;
resultItem++;
}
System.out.println(resultItem);
resultRotation = (resultItem-1)*360f/itemNum;
}
}
