/** 默认的Screen主线程中（非ShotLoop线程）事件 */
public final void alter(LTimerContext context) {
long elapsedTime = context.getTimeSinceLastUpdate();
if (touch != null) {
touch.update(elapsedTime);
}
if (scrollDelay.action(elapsedTime)) {
switch (backgroundMode) {
case BACK_STAR_MODE:
this.dot[this.count] = (int) (MathUtils.random() * this.getWidth());
++this.count;
this.count %= dot_size;
break;
case BACK_SCROLL_MODE:
if (scroll != null) {
scroll.update(context.getTimeSinceLastUpdate());
}
break;
case BACK_EMPTY_MODE:
emptyBackground();
break;
}
}
update(elapsedTime);
}
public final void alter(LTimerContext timer) {
for (int i = 0; i < keySize; i++) {
ActionKey act = (ActionKey) keyActions.get(i);
if (act.isPressed()) {
act.act(elapsedTime);
if (act.isReturn) {
return;
}
}
}
if (content.isVisible()) {
processEvents();
content.updateNode(timer.getMilliseconds());
}
if (follow != null) {
for (TileMap tile : tiles) {
float offsetX = getHalfWidth() - follow.getX();
offsetX = MathUtils.min(offsetX, 0);
offsetX = MathUtils.max(offsetX, getWidth() - tile.getWidth());
float offsetY = getHalfHeight() - follow.getY();
offsetY = MathUtils.min(offsetY, 0);
offsetY = MathUtils.max(offsetY, getHeight() - tile.getHeight());
setOffset(tile, offsetX, offsetY);
tile.update(elapsedTime);
}
}
for (SpriteBatchObject o : objects) {
o.update(elapsedTime);
if (updateListener != null) {
updateListener.act(o, elapsedTime);
}
}
update(elapsedTime);
commits();
}