我正在开发一款简单的游戏并面临一个问题。在屏幕分辨率低于游戏世界分辨率的设备上，移动不平滑且看起来非常恶心。
我的代码：
public float LAST_GROUND_LEVEL, CURRENT_GROUND_LEVEL, LAST_GROUND_LEVEL_PLANKS;
public int CURRENT_GROUND_INDEX, COUNTER_TO_NEXT_PLANK = 0;
private Ball ball;
private Array<Plank> planks;
private Array<GroundPlank> groundPlanks;
private Random random;
public PlayState(GameStateManager gsm) {
super(gsm);
orthographicCamera.setToOrtho(false, JumpingBall.WIDTH, JumpingBall.HEIGHT);
ball = new Ball(JumpingBall.WIDTH / 2, JumpingBall.HEIGHT / 2, gameStateManager);
planks = new Array<Plank>();
random = new Random();
groundPlanks = new Array<GroundPlank>();
for (int i = 0; i < 3; i++) {
if (i != 2) {
groundPlanks.add(new GroundPlank(i * orthographicCamera.viewportWidth / 2, 600 * JumpingBall.RATIO, orthographicCamera));
CURRENT_GROUND_INDEX = i;
CURRENT_GROUND_LEVEL = 600 * JumpingBall.RATIO;
} else {
boolean side = random.nextBoolean();
if (side == true) {
groundPlanks.add(new GroundPlank(i * orthographicCamera.viewportWidth / 2, 800 * JumpingBall.RATIO, orthographicCamera));
LAST_GROUND_LEVEL = 800 * JumpingBall.RATIO;
} else {
groundPlanks.add(new GroundPlank(i * orthographicCamera.viewportWidth / 2, 400 * JumpingBall.RATIO, orthographicCamera));
LAST_GROUND_LEVEL = 400 * JumpingBall.RATIO;
}
}
LAST_GROUND_LEVEL_PLANKS = LAST_GROUND_LEVEL;
COUNTER_TO_NEXT_PLANK++;
}
}
@Override
public void handleInput() {
if (Gdx.input.justTouched()) {
ball.jump();
}
}
@Override
public void update(float delta) {
if (delta > 0f) {
handleInput();
for (int i = 0; i < groundPlanks.size; i++) {
if ((ball.getPosition().x + ball.getBall().getWidth() / 30 * JumpingBall.RATIO / 2 > groundPlanks.get(i).getPosition().x) &(ball.getPosition().x + ball.getBall().getWidth() / 30 * JumpingBall.RATIO / 2 < groundPlanks.get(i).getPosition().x + orthographicCamera.viewportWidth / 2))
{
ball.update(delta, CURRENT_GROUND_LEVEL + groundPlanks.get(0).getGroundPlankTexture().getHeight() / 4 * JumpingBall.RATIO, groundPlanks.get(i).getPosition().x + orthographicCamera.viewportWidth / 2, CURRENT_GROUND_LEVEL + groundPlanks.get(0).getGroundPlankTexture().getHeight() / 4 * JumpingBall.RATIO, LAST_GROUND_LEVEL + groundPlanks.get(0).getGroundPlankTexture().getHeight() / 4 * JumpingBall.RATIO);
}
}
orthographicCamera.position.x = ball.getPosition().x + ball.getBall().getWidth() / 30 * JumpingBall.RATIO / 2;
boolean foundPlank = false;
for (int i = 0; i < groundPlanks.size; i++) {
if (foundPlank == false) {
GroundPlank groundPlank = groundPlanks.get(i);
GroundPlank RepositionPlank;
if ((orthographicCamera.position.x > groundPlank.getPosition().x) & ((groundPlank.getPosition().x + orthographicCamera.viewportWidth / 2) > orthographicCamera.position.x)) {
CURRENT_GROUND_LEVEL = groundPlank.getPosition().y;
if (i > 1) {
RepositionPlank = groundPlanks.get(0);
} else if (i == 1) {
RepositionPlank = groundPlanks.get(2);
} else {
RepositionPlank = groundPlanks.get(1);
}
if (i != CURRENT_GROUND_INDEX) {
boolean side = random.nextBoolean();
if (side == true) {
if (LAST_GROUND_LEVEL < GroundPlank.HIGHEST_OPENING) {
RepositionPlank.Reposition(groundPlank.getPosition().x + orthographicCamera.viewportWidth / 2, LAST_GROUND_LEVEL + 200 * JumpingBall.RATIO);
LAST_GROUND_LEVEL = LAST_GROUND_LEVEL + 200 * JumpingBall.RATIO;
} else {
RepositionPlank.Reposition(groundPlank.getPosition().x + orthographicCamera.viewportWidth / 2, LAST_GROUND_LEVEL - 200 * JumpingBall.RATIO);
LAST_GROUND_LEVEL = LAST_GROUND_LEVEL - 200 * JumpingBall.RATIO;
}
} else {
if (LAST_GROUND_LEVEL > GroundPlank.LOWEST_OPENING) {
RepositionPlank.Reposition(groundPlank.getPosition().x + orthographicCamera.viewportWidth / 2, LAST_GROUND_LEVEL - 200 * JumpingBall.RATIO);
LAST_GROUND_LEVEL = LAST_GROUND_LEVEL - 200 * JumpingBall.RATIO;
} else {
RepositionPlank.Reposition(groundPlank.getPosition().x + orthographicCamera.viewportWidth / 2, LAST_GROUND_LEVEL + 200 * JumpingBall.RATIO);
LAST_GROUND_LEVEL = LAST_GROUND_LEVEL + 200 * JumpingBall.RATIO;
}
}
CURRENT_GROUND_INDEX = i;
for (int j = 0; j < groundPlanks.size; j++) {
if (orthographicCamera.position.x < groundPlanks.get(j).getPosition().x) {
LAST_GROUND_LEVEL_PLANKS = groundPlanks.get(j).getPosition().y;
}
}
COUNTER_TO_NEXT_PLANK++;
if (COUNTER_TO_NEXT_PLANK == 4) {
if (planks.size != 0) {
Plank plank = planks.get(0);
plank.reposition(RepositionPlank.getPosition().x, LAST_GROUND_LEVEL_PLANKS + 20 * JumpingBall.RATIO + RepositionPlank.getGroundPlankTexture().getHeight() / 4 * JumpingBall.RATIO, RepositionPlank.getGroundPlankTexture().getHeight() / 4 * JumpingBall.RATIO + LAST_GROUND_LEVEL_PLANKS + 150 * JumpingBall.RATIO);
} else {
planks.add(new Plank(RepositionPlank.getPosition().x, LAST_GROUND_LEVEL_PLANKS + 20 * JumpingBall.RATIO + RepositionPlank.getGroundPlankTexture().getHeight() / 4 * JumpingBall.RATIO, RepositionPlank.getGroundPlankTexture().getHeight() / 4 * JumpingBall.RATIO + LAST_GROUND_LEVEL_PLANKS + 150 * JumpingBall.RATIO));
}
COUNTER_TO_NEXT_PLANK = 0;
}
}
foundPlank = true;
}
}
}
if (planks.size != 0){
if (planks.get(0).Collides(ball.getBounds())){
gameStateManager.set(new MenuState(gameStateManager));
}
}
}
orthographicCamera.update();
}
@Override
public void render(SpriteBatch spriteBatch) {
spriteBatch.setProjectionMatrix(orthographicCamera.combined);
spriteBatch.begin();
spriteBatch.draw(ball.getBall(), ball.getPosition().x, ball.getPosition().y, ball.getBall().getWidth() / 30 * JumpingBall.RATIO, ball.getBall().getHeight() / 30 * JumpingBall.RATIO);
for (Plank plank : planks) {
spriteBatch.draw(plank.getPlank(), plank.getPosTopPlank().x, plank.getPosTopPlank().y, plank.getPlank().getWidth() * JumpingBall.RATIO / 4, plank.getPlank().getHeight() * JumpingBall.RATIO);
spriteBatch.draw(plank.getPlank(), plank.getPosBotPlank().x, plank.getPosBotPlank().y, plank.getPlank().getWidth() * JumpingBall.RATIO / 4, plank.getPlank().getHeight() * JumpingBall.RATIO);
}
for (GroundPlank groundPlank : groundPlanks) {
spriteBatch.draw(groundPlank.getGroundPlankTexture(), groundPlank.getPosition().x, groundPlank.getPosition().y, orthographicCamera.viewportWidth / 2, groundPlank.getGroundPlankTexture().getHeight() * JumpingBall.RATIO / 4);
}
spriteBatch.end();
}
@Override
public void dispose() {
for (Plank plank : planks) {
plank.dispose();
}
ball.getBall().dispose();
for (GroundPlank groundPlank : groundPlanks) {
groundPlank.getGroundPlankTexture().dispose();
}
}
编辑：
public void update(float delta, float groundlevel, float cur_x_end, float cur_y, float next_y){
GROUND_LEVEL = groundlevel;
if (position.y > GROUND_LEVEL){
velocity.add(0, GRAVITY, 0);
}
velocity.scl(delta);
position.add(MOVEMENT * delta, velocity.y, 0);
if ((position.y <= GROUND_LEVEL) & (position.x + getBall().getWidth() / 30 * JumpingBall.RATIO < cur_x_end)){
if (Down == false) {
position.y = GROUND_LEVEL;
}
} else if (position.x + getBall().getWidth() / 30 * JumpingBall.RATIO > cur_x_end){
if (next_y > cur_y){
if (position.y < next_y){
Down = true;
}
}
}
if (position.y + getBall().getHeight() / 30 * JumpingBall.RATIO < 0){
gameStateManager.set(new MenuState(gameStateManager));
}
if (position.y >= JumpingBall.WORLD_HEIGHT * JumpingBall.RATIO - BallTexture.getHeight() / 30 * JumpingBall.RATIO){
position.y = JumpingBall.WORLD_HEIGHT * JumpingBall.RATIO - BallTexture.getHeight() / 30 * JumpingBall.RATIO;
}
velocity.scl(1/delta);
bounds.setPosition(position.x, position.y);
}
答案 0 :(得分：0)
请使用scene2d进行平滑移动和旋转。 Read wiki page for implementation
答案 1 :(得分：-1)
可能是你正在以平均不均匀的像素移动球。如果你以1.6像素的平均速度移动pr。框架，球将移动1个像素的一些帧和2个像素的其他帧。这会导致口吃。
没有半像素，所以你应该确保你的速度让每一帧的球移动相同的像素数。