【问题标题】:If condition is not executing如果条件未执行
【发布时间】:2015-11-05 04:53:59
【问题描述】:
我正在尝试确定我的对象是否被击中,稍微宽容一点。但它不起作用。这是我的代码:
public boolean isClicked(float x) {
if (Gdx.input.isTouched() && Gdx.graphics.getHeight() - Gdx.input.getY() >= this.getY() && Gdx.graphics.getHeight() - Gdx.input.getY() <= this.getY() + this.getHeight() && this.getWidth() >= Gdx.input.getX() && x < this.getY() + this.getHeight() * 1.2f && x > this.getY() - this.getHeight() * .2f) {
return true;
}
return false;
【问题讨论】:
标签:
java
function
if-statement
libgdx
intersection
【解决方案1】:
始终尝试以这种方式使用条件,并为多个条件使用括号:
if (Gdx.input.isTouched() && ((Gdx.graphics.getHeight() - Gdx.input.getY()) >= this.getY()) && ((Gdx.graphics.getHeight() - Gdx.input.getY()) <= (this.getY() + this.getHeight())) && (this.getWidth() >= Gdx.input.getX()) && (x < ((this.getY() + this.getHeight()) * 1.2f)) && (x > ((this.getY() - this.getHeight()) * .2f))) {
return true;
}
return false;
【解决方案2】:
您应该尝试格式化长行以提高可读性并使用括号。
if (Gdx.input.isTouched()
&& (Gdx.graphics.getHeight() - Gdx.input.getY()) >= this.getY()
&& (Gdx.graphics.getHeight() - Gdx.input.getY()) <= (this.getY() + this.getHeight())
&& this.getWidth() >= Gdx.input.getX()
&& x < (this.getY() + this.getHeight() * 1.2f )
&& x > (this.getY() - this.getHeight() * .2f )
) {
return true;
}
这还可以让您注释掉任何中间行的开头(例如,使用 //)以隔离问题。