我对AS3很新，我正在创建一个基于文本的游戏，我很难从屏幕上清除文本。我正在使用FlxText和FlxButtons。当我使用clear（）时它会删除所有内容。 这就是它的样子（对不起，如果这比我应该放的更多，我匆忙而且代码工作也可能很糟糕。）：
public function DragonState()
{
FlxG.mouse.show();
menuButton = new FlxButton(240, 220, "Menu", menu);
add(menuButton);
swordButton = new FlxButton(0, 220, "Slash", sword);
add(swordButton)
shieldButton = new FlxButton(80, 220, "Sheild Bash", shield);
add(shieldButton)
bowButton = new FlxButton(160, 220, "Shoot", bow);
add(bowButton)
}
private function menu():void
{
FlxG.mouse.hide();
FlxG.switchState(new MenuState);
}
public function sword():void
{
playerAttack = Math.floor(Math.random() * (2 - 0 +2) * 7);
dragonAttack = Math.floor(Math.random() * (1 - 0 + 1) * 7);
add(new FlxText(0, 0, 320, "The Dragon hit you for " + String(dragonAttack)));
add(new FlxText(0, 10, 320, "You hit the Dragon for " + String(playerAttack)));
updateHealth()
}
public function shield():void
{
playerAttack = Math.floor(Math.random() * (2 - 0 +2) * 2);
dragonAttack = Math.floor(Math.random() * (1 - 0 + 1) * 2);
add(new FlxText(0, 0, 320, "The Dragon hit you for " + String(dragonAttack)));
add(new FlxText(0, 10, 320, "You hit the Dragon for " + String(playerAttack)));
updateHealth()
}
public function bow():void
{
playerAttack = Math.floor(Math.random() * (2 - 0 + 2) * 4);
dragonAttack = Math.floor(Math.random() * (2 - 0 + 2) * 4);
add(new FlxText(0, 0, 320, "The Dragon hit you for " + String(dragonAttack)));
add(new FlxText(0, 10, 320, "You hit the Dragon for " + String(playerAttack)));
updateHealth()
}
public function updateHealth():void
{
dragonHealth = dragonHealth - playerAttack
playerHealth = playerHealth - dragonAttack
add(new FlxText(0, 20, 320, "The Dragon has " + String(dragonHealth) + " health left."));
add(new FlxText(0, 30, 320, "You have " + String(playerHealth) + " health left."));
if (dragonHealth <= 0) {
add(new FlxText(0,0,320,"Good Job"));
}else if (playerHealth<=0) {
add(new FlxText(0,0,320,"Oh No!"));
} else {
add(new FlxText(0,0,320,"What will you do?"));
}
}
答案 0 :(得分：1)
使用Flixel时，最好在状态create()方法中实例化元素，而不是使用类构造函数。它将通过节省内存和避免额外的垃圾收集器运行来提高性能。
对于您在屏幕上呈现的任何元素都有一个引用/属性也是一个好主意，就像您使用按钮一样。这样，您就可以在状态的任何方法中访问它们，例如，这对于清除文本非常有用。
按照惯例，您应该在屏幕上为每个文本添加一个属性：
class DragonState {
// Properties for buttons
private var menuButton :FlxButton;
private var swordButton :FlxButton;
private var shieldButton :FlxButton;
// Properties for texts
private var enemyAttack :FlxText;
private var enemyHealth :FlxText;
private var playerAttack :FlxText;
private var playerHealth :FlxText;
override public function create():void {
// instantiate buttons
FlxG.mouse.show();
menuButton = new FlxButton(240, 220, "Menu", menu);
add(menuButton);
swordButton = new FlxButton(0, 220, "Slash", sword);
add(swordButton);
shieldButton = new FlxButton(80, 220, "Sheild Bash", shield);
add(shieldButton);
bowButton = new FlxButton(160, 220, "Shoot", bow);
add(bowButton);
// instantiate texts (they are empty by default)
enemyAttack = new FlxText(0, 0, 320);
enemyHealth = new FlxText(0, 20, 320,);
playerAttack = new FlxText(0, 10, 320);
playerHealth = new FlxText(0, 30, 320);
add(enemyAttack);
add(enemyHealth);
add(playerAttack);
add(playerHealth);
}
public function sword():void {
playerAttack = Math.floor(Math.random() * (2 - 0 +2) * 7);
dragonAttack = Math.floor(Math.random() * (1 - 0 + 1) * 7);
// Change the content of texts
enemyAttack.text = "The Dragon hit you for " + String(dragonAttack);
playerAttack.text = "You hit the Dragon for " + String(playerAttack);
updateHealth()
}
public function updateHealth():void {
dragonHealth = dragonHealth - playerAttack
playerHealth = playerHealth - dragonAttack
enemyHealth.text = "The Dragon has " + String(dragonHealth) + " health left.";
playerHealth.text = "You have " + String(playerHealth) + " health left.";
// (...)
}
public function clearTexts():void {
enemyAttack.text = "";
playerAttack.text = "";
enemyHealth.text = "";
playerHealth.text = "";
}
}
如果要隐藏所有文本，可以将它们添加到FlxGroup并隐藏该组。隐藏组将隐藏组中包含的所有内容。它可以实现为：
class DragonState {
// (...)
// Properties for texts
private var enemyAttack :FlxText;
private var enemyHealth :FlxText;
private var playerAttack :FlxText;
private var playerHealth :FlxText;
// Group containing all texts
private var texts :FlxGroup;
override public function create():void {
// (...)
// create the texts group
texts = new FlxGroup();
// instantiate texts (they are empty by default)
enemyAttack = new FlxText(0, 0, 320);
enemyHealth = new FlxText(0, 20, 320,);
playerAttack = new FlxText(0, 10, 320);
playerHealth = new FlxText(0, 30, 320);
// add all texts to the group
texts.add(enemyAttack);
texts.add(enemyHealth);
texts.add(playerAttack);
texts.add(playerHealth);
// Add the group to the state
add(texts);
}
public function sword():void {
// (...)
// Change the content of texts
enemyAttack.text = "The Dragon hit you for " + String(dragonAttack);
playerAttack.text = "You hit the Dragon for " + String(playerAttack);
updateHealth();
}
public function updateHealth():void {
// (...)
enemyHealth.text = "The Dragon has " + String(dragonHealth) + " health left.";
playerHealth.text = "You have " + String(playerHealth) + " health left.";
// (...)
}
public function hideTexts():void {
texts.visible = false;
}
public function showTexts():void {
texts.visible = true;
}
}
答案 1 :(得分：0)
首先，您要跟踪要添加到State对象的FlxText对象。您可以将每个变量作为单独的变量保存，也可以在类级别的数组中进行分组。
var flxTextObjs:Array;
在添加FlxText对象时，您应该拥有对它们的引用。
例如：
var fTxt = add(new FlxText(0, 0, 320, "The Dragon hit you for " + String(dragonAttack)));
flxTextObjs.push(fTxt);
现在您可以引用这些对象，您可以调用remove（）而不是clear（）。
for(var x:int; x < flxTextObjs.length; x ++){
remove(flxTextObjs[x]);
}
这是一个草率的例子，但我希望你能从中得到这个想法。