首页 > 解决方案 > 在 libGDX 中进行平滑跳转

问题描述

我想创建我的播放器的平滑跳跃

我试过等待并通过使用很多步骤使跳跃变慢,但我无法弄清楚

播放器控制类:

package com.mygdx.game;

import java.lang.Thread.State;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input.Keys;
import com.badlogic.gdx.graphics.g2d.Sprite;
import com.badlogic.gdx.graphics.g2d.TextureRegion;
import com.badlogic.gdx.math.Vector2;


@SuppressWarnings("unused")
public class PlayerController {
    static int speed = 1;
    public static int jump = 0;

    static void keyInput() {
        jump++;
        if (Gdx.input.isKeyPressed(Keys.A)) {
            main.playerX += speed;
            main.backgroundSpriteX += speed;
        }
        if (Gdx.input.isKeyPressed(Keys.D)) {
            main.playerX -= speed;
            main.backgroundSpriteX -= speed;
        }
        if (Gdx.input.isKeyPressed(Keys.W)) {
             //this is where i want to be able to jump
        }
    }  
    static void Controller() {


        main.player = new Sprite(main.texture);
        main.playerX = (main.canvisWidth * 0);
        main.playerY = (main.canvisHeight * 0); //can be 0
    }
}

主类:

package com.mygdx.game;

import com.badlogic.gdx.ApplicationListener;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.Sprite;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;


public class main implements ApplicationListener {
    public static final int backgroundSpriteY = 0;
    public static final int backgroundSprite2Y = 0;
    public static int canvisWidth = 800;
    public static int canvisHeight = 480;
    public static int backgroundSpriteX = 0;
    public static Texture texture;
    public static int backgroundSprite2X = -canvisWidth;
    public static Sprite player;
    public static int playerX;
    public static int playerY;
    static SpriteBatch spriteBatch;
    static int Jumpframes = 0;
    private double playerSize = .4;

    public void create() {
        WorldObjects.shapeRender.setAutoShapeType(true);
        spriteBatch = new SpriteBatch();
        texture = new Texture(Gdx.files.internal("imageedit_3_3813241913.png"));
        PlayerController.Controller();
        WorldSetup.start();
        player.setSize((float) (player.getWidth() * playerSize), (float) (player.getHeight() * playerSize));
    }

    public void render() {
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
        PlayerController.keyInput();
        WorldController.Scroll();
        spriteBatch.begin();
        spriteBatch.draw(WorldSetup.backgroundTexture, backgroundSpriteX, backgroundSpriteY);
        spriteBatch.draw(WorldSetup.backgroundTexture2, backgroundSprite2X, backgroundSprite2Y);
        spriteBatch.draw(texture, playerX, playerY, player.getWidth(), player.getHeight());
        spriteBatch.end();
        WorldSetup.WorldRender();
        //Jumpframes++;
    }


    public void resize(int width, int height) {
    }

    public void pause() {
    }

    public void resume() {
    }

    public void dispose() {
    }

}

我想要像马里奥那样的慢跳,但我似乎无法创建慢/平滑的跳跃

我想要 20 帧跳跃上升 30 像素开始快速和减速

标签: javalibgdx

解决方案


我认为你需要的是一个用于游戏的 2D 物理引擎,流行的是Box2D

很多关于这方面的教程,比如 Brent Aureli 的作品,要跳跃你的角色,你只需对它施加力量

player.b2body.applyForceToCenter(0, 80f, true);

希望这可以帮助


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