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CameraTools.calculateScrollBounds

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This commit is contained in:
Nat Quayle Nelson
2022-06-28 04:52:04 +00:00
parent b4775cf531
commit d78104f1f2
2 changed files with 16 additions and 1 deletions
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3
src/kiss_flixel/CameraTools.hx
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@@ -10,6 +10,9 @@ import flixel.math.FlxPoint;
import flixel.FlxSprite; import flixel.FlxSprite;
import flixel.FlxG; import flixel.FlxG;
import flixel.util.FlxColor; import flixel.util.FlxColor;
import flixel.FlxObject;
import flixel.group.FlxGroup;
import kiss_flixel.GroupTools;
using Lambda; using Lambda;

12
src/kiss_flixel/CameraTools.kiss
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@@ -81,3 +81,15 @@
camera.zoom += (FlxG.mouse.wheel * elapsed * speed); camera.zoom += (FlxG.mouse.wheel * elapsed * speed);
} }
}#) }#)
(function calculateScrollBounds <>[:FlxObject T] [:FlxCamera camera :FlxTypedGroup<T> group &opt :Float margin]
(let [r (GroupTools.calculateBounds group margin)]
(camera.setScrollBoundsRect r.x r.y r.width r.height)))
(function extendScrollBounds [:FlxCamera camera :FlxObject object &opt :Float margin]
// if the given object is out of bounds, extend the bounds
(let [r (object.getRotatedBounds)]
(setMin camera.minScrollX (- r.left margin))
(setMin camera.minScrollY (- r.top margin))
(setMax camera.maxScrollX (+ r.right margin))
(setMax camera.maxScrollY (+ r.bottom margin))))