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  rotating arm  (Read 1437 times)
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Offline Jimmt
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JGO Kernel


Medals: 167
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Exp: 6 years



« Posted 2012-05-03 00:38:04 »

hello, I'm trying to make the arm of the player sprite rotate to follow the mouse. However, I have no idea how to start about doing this. I am using mouseListener and mouseMotionListener, and I am rotating the arm using this:
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 AffineTransform tx = AffineTransform.getRotateInstance(rotationRequired, player.weapon.img.getWidth(null) / 2, player.weapon.img.getHeight(null) / 2);
       AffineTransformOp op = new AffineTransformOp(tx, AffineTransformOp.TYPE_BILINEAR);
       g2d.drawImage(op.filter((BufferedImage)player.weapon.img, null), player.weapon.x, player.weapon.y, null);
Offline ra4king

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« Reply #1 - Posted 2012-05-03 02:50:03 »

Well....you have no idea how to do this...but you have code.....does it work?

Online Roquen
« Reply #2 - Posted 2012-05-03 08:44:30 »

Assuming that the arm pivots at the shoulder, the you simply have a direction vector between the point of the shoulder to the point of the mouse.  Normalize.  Done.
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Offline Jimmt
« League of Dukes »

JGO Kernel


Medals: 167
Projects: 5
Exp: 6 years



« Reply #3 - Posted 2012-05-04 03:55:21 »

I'm googling it...but I'm only in middle school, so I may not be able to understand this...
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