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ignore alpha when point-selecting sprites #3184

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merged 2 commits into from
Jun 12, 2024
Merged

ignore alpha when point-selecting sprites #3184

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04adaf9
ignore alpha when point-selecting sprites
Geokureli Jun 12, 2024
d1cf85a
typo
Geokureli Jun 12, 2024
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33 changes: 30 additions & 3 deletions flixel/system/debug/interaction/Interaction.hx
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Original file line number Diff line number Diff line change
Expand Up @@ -679,6 +679,19 @@ class Interaction extends Window
addItemsWithinArea(cast items, members, area);
}

inline function isOverObject(object:FlxObject, area:FlxRect):Bool
{
return area.overlaps(object.getHitbox(FlxRect.weak()));
}

inline function isOverSprite(sprite:FlxSprite, area:FlxRect):Bool
{
// Ignore sprites' alpha when clicking a point
return (area.width <= 1 && area.height <= 1)
? sprite.pixelsOverlapPoint(flixelPointer, 0xEE)
: isOverObject(sprite, area);
}

/**
* Find all items within an area. In order to improve performance and reduce temporary allocations,
* the method has no return, you must pass an array where items will be placed. The method decides
Expand All @@ -703,11 +716,19 @@ class Interaction extends Window

final group = FlxTypedGroup.resolveSelectionGroup(member);
if (group != null)
{
addItemsWithinArea(items, group.members, area);
}
else if (member is FlxSprite)
{
final sprite:FlxSprite = cast member;
if (isOverSprite(sprite, area))
items.push(sprite);
}
else if (member is FlxObject)
{
final object:FlxObject = cast member;
if (area.overlaps(object.getHitbox()))
if (isOverObject(object, area))
items.push(object);
}
}
Expand Down Expand Up @@ -737,10 +758,16 @@ class Interaction extends Window
if (group != null)
return getTopItemWithinArea(group.members, area);

if (member is FlxObject)
if (member is FlxSprite)
{
final sprite:FlxSprite = cast member;
if (isOverSprite(sprite, area))
return sprite;
}
else if (member is FlxObject)
{
final object:FlxObject = cast member;
if (area.overlaps(object.getHitbox()))
if (isOverObject(object, area))
return object;
}
}
Expand Down
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