Fix bug in Chapter2/BGSpriteComponent.cpp

HarIgo23 · web-flow · commit 8e931a0c13cf · 2024-03-09T19:46:58.000+03:00
diff --git a/Chapter02/BGSpriteComponent.cpp b/Chapter02/BGSpriteComponent.cpp
@@ -21,12 +21,12 @@ void BGSpriteComponent::Update(float deltaTime)
 	for (auto& bg : mBGTextures)
 	{
 		// Update the x offset
-		bg.mOffset.x += mScrollSpeed * deltaTime;
+		bg.mOffset.x -= mScrollSpeed * deltaTime;
 		// If this is completely off the screen, reset offset to
 		// the right of the last bg texture
 		if (bg.mOffset.x < -mScreenSize.x)
 		{
-			bg.mOffset.x = (mBGTextures.size() - 1) * mScreenSize.x - 1;
+			bg.mOffset.x += mScreenSize.x * mBGTextures.size();
 		}
 	}
 }

Original file line number	Diff line number	Diff line change
`@@ -21,12 +21,12 @@ void BGSpriteComponent::Update(float deltaTime)`
`21`	`21`	`for (auto& bg : mBGTextures)`
`22`	`22`	`{`
`23`	`23`	`// Update the x offset`
`24`		`- bg.mOffset.x += mScrollSpeed * deltaTime;`
	`24`	`+ bg.mOffset.x -= mScrollSpeed * deltaTime;`
`25`	`25`	`// If this is completely off the screen, reset offset to`
`26`	`26`	`// the right of the last bg texture`
`27`	`27`	`if (bg.mOffset.x < -mScreenSize.x)`
`28`	`28`	`{`
`29`		`- bg.mOffset.x = (mBGTextures.size() - 1) * mScreenSize.x - 1;`
	`29`	`+ bg.mOffset.x += mScreenSize.x * mBGTextures.size();`
`30`	`30`	`}`
`31`	`31`	`}`
`32`	`32`	`}`