Fix: refactoring appButton

src/game/lib/round_rect_button.js

@@ -79,7 +79,7 @@ RoundRectButtonSetting.DEFAULT_STROKE_WIDTH_PX		= 5;	// in pixel
 
 
 class RoundRectButton {
-	constructor(roundRectSetting, buttonText, clickEvent) {
+	constructor(roundRectSetting, iconName, buttonText, clickEvent) {
 		this.setting = roundRectSetting;
 		this.clickEvent = clickEvent;
 
@@ -88,10 +88,18 @@ class RoundRectButton {
 		this.buttonStroke.inputEnabled = true;
 		this.setEventMethod(this.buttonStroke);
 
-		this.text = this.makeText(buttonText);
-
 		this.button = this.makeButtonSprite();
-		this.button.addChild(this.text);
+
+		this.text = this.makeText(buttonText);
+		if(buttonText.length > 0) {
+			this.button.addChild(this.text);
+		}
+
+		if(iconName.length > 0) {
+			this.icon = this.makeIcon(iconName);
+			this.setIcon(this.icon);
+		}
+
 		// this.button.anchor.setTo(0.5, 0.5);
 		this.button.inputEnabled = true;
 		this.setEventMethod(this.button);
@@ -136,6 +144,14 @@ class RoundRectButton {
 		return game.add.sprite(0, 0, btnTexture);
 	}
 
+	makeIcon(iconName) {
+		let icon = game.add.sprite(0, 0, iconName);
+		icon.width = 80;
+		icon.height = 80;
+
+		return icon;
+	}
+
 	makeText(textContent) {
 		let width = this.setting.width - this.setting.strokeWidthPx * 2;
 		let height = this.setting.height - this.setting.strokeWidthPx * 2;
@@ -225,3 +241,5 @@ class RoundRectButton {
 	}
 }
 
+RoundRectButton.NONE_ICON			= "";
+RoundRectButton.NONE_BUTTON_TEXT	= "";