45、Super Jumper: A 2D OpenGL ES Game Development Guide

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于 2025-10-08 11:27:46 发布

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分类专栏：安卓游戏开发实战指南文章标签： Super Jumper OpenGL ES 2D game development

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Super Jumper: A 2D OpenGL ES Game Development Guide

1. Platform Class

The Platform class has two important methods: update() and pulverize() .

update() method :

public void update(float deltaTime) {
    if(type == PLATFORM_TYPE_MOVING) {
        position.add(velocity.x * deltaTime, 0);
        bounds.lowerLeft.set(position).sub(PLATFORM_WIDTH / 2, PLATFORM_HEIGHT / 2);
        if(position.x < PLATFORM_WIDTH / 2) {
            velocity.x = -velocity.x;
            position.x = PLATFORM_WIDTH / 2;
        }
        if(position.x > World.WORLD_WIDTH - PLATFORM_WIDTH / 2) {
            velocity.x = -velocity.x;
            position.x