From 13600537848fd7200c4a1d8839ef88bde79b2dec Mon Sep 17 00:00:00 2001
From: Evan Debenham <Evan@ShatteredPixel.com>
Date: Sun, 8 Sep 2024 14:59:37 -0400
Subject: [PATCH] v2.5.0: added a panning function to region backgrounds in
 portrait

---
 .../scenes/InterlevelScene.java               | 36 ++++++++++++++-----
 1 file changed, 28 insertions(+), 8 deletions(-)

diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/scenes/InterlevelScene.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/scenes/InterlevelScene.java
index 8ef0b2e8c..f9614440f 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/scenes/InterlevelScene.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/scenes/InterlevelScene.java
@@ -90,7 +90,9 @@ public class InterlevelScene extends PixelScene {
 	}
 	private Phase phase;
 	private float timeLeft;
-	
+
+	public Image background;
+
 	private RenderedTextBlock loadingText;
 
 	private RenderedTextBlock storyMessage;
@@ -213,7 +215,7 @@ public class InterlevelScene extends PixelScene {
 			fadeTime = 0f;
 		}
 
-		Image background = new Image(loadingAsset);
+		background = new Image(loadingAsset);
 		background.scale.set(Camera.main.height/background.height);
 
 		if (Camera.main.width >= background.width()){
@@ -274,7 +276,7 @@ public class InterlevelScene extends PixelScene {
 
 					storyBG = new ShadowBox();
 					storyBG.boxRect(storyMessage.left()-10, storyMessage.top()-10, storyMessage.width()+20, storyMessage.height()+20);
-					storyBG.alpha(0.75f);
+					storyBG.alpha(0.8f);
 					add(storyBG);
 					add(storyMessage);
 
@@ -304,7 +306,7 @@ public class InterlevelScene extends PixelScene {
 										protected void updateValues(float progress) {
 											float uiAlpha = progress;
 											btnContinue.alpha(uiAlpha);
-											storyBG.alpha(uiAlpha*0.75f);
+											storyBG.alpha(uiAlpha*0.8f);
 											storyMessage.alpha(uiAlpha);
 											btnHideStory.icon().alpha(uiAlpha);
 											loadingText.alpha(uiAlpha);
@@ -336,7 +338,7 @@ public class InterlevelScene extends PixelScene {
 									protected void updateValues(float progress) {
 										float uiAlpha = 1 - progress;
 										btnContinue.alpha(uiAlpha);
-										storyBG.alpha(uiAlpha * 0.75f);
+										storyBG.alpha(uiAlpha * 0.8f);
 										storyMessage.alpha(uiAlpha);
 										icon.alpha(uiAlpha);
 										loadingText.alpha(uiAlpha);
@@ -360,7 +362,7 @@ public class InterlevelScene extends PixelScene {
 									protected void updateValues(float progress) {
 										float uiAlpha = progress;
 										btnContinue.alpha(uiAlpha);
-										storyBG.alpha(uiAlpha*0.75f);
+										storyBG.alpha(uiAlpha*0.8f);
 										storyMessage.alpha(uiAlpha);
 										icon.alpha(uiAlpha);
 										loadingText.alpha(uiAlpha);
@@ -488,12 +490,15 @@ public class InterlevelScene extends PixelScene {
 			break;
 			
 		case FADE_OUT:
+			background.acc.set(0);
+			background.speed.set(0);
+
 			loadingText.alpha( Math.min(1, timeLeft+0.333f) );
 
 			if (btnContinue != null){
 				btnContinue.alpha((timeLeft/fadeTime));
 				storyMessage.alpha(btnContinue.alpha());
-				storyBG.alpha(btnContinue.alpha()*0.75f);
+				storyBG.alpha(btnContinue.alpha()*0.8f);
 				btnHideStory.icon().alpha(btnContinue.alpha());
 			}
 			
@@ -510,7 +515,7 @@ public class InterlevelScene extends PixelScene {
 			if (btnContinue != null && textFadingIn) {
 				btnContinue.alpha(Math.min(1, btnContinue.alpha() + Game.elapsed));
 				storyMessage.alpha(btnContinue.alpha());
-				storyBG.alpha(btnContinue.alpha()*0.75f);
+				storyBG.alpha(btnContinue.alpha()*0.8f);
 				btnHideStory.icon().alpha(btnContinue.alpha());
 
 				if (btnContinue.alpha() == 1){
@@ -525,6 +530,21 @@ public class InterlevelScene extends PixelScene {
 				}
 			}
 
+			//slowly pan the background side to side in portait mode, if story text is displayed
+			if (btnContinue != null && !textFadingIn && !landscape()){
+				if (background.speed.isZero() && background.acc.isZero()){
+					background.acc.x = background.center().x > Camera.main.width ? -1f : 1f;
+				} else {
+					background.speed.x = GameMath.gate(-10, background.speed.x, 10);
+					if (background.acc.x > 0 && background.x >= -25){
+						background.acc.x = -2.5f;
+					} else if (background.acc.x < 0 && background.x + background.width() <= Camera.main.width+25){
+						background.acc.x = 2.5f;
+					}
+				}
+
+			}
+
 			if (error != null) {
 				String errorMsg;
 				if (error instanceof FileNotFoundException)     errorMsg = Messages.get(this, "file_not_found");