Collision Detection

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Collision Detection
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hitTest()

• Gets sent a movie clip
• Checks the movie clip it was called from and the
  movie clip it was sent for collisions
• Returns a true or a false

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if (square.hitTest(circle)) // something
important happens here
Returns true Something important happens
Returns false Nothing happens
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Nothings Easy

• Computers are not fast enough to calculate
  collisions between complex shapes
• State of the art 3-d games use hitboxes
• Square characters are boring

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(No Transcript)
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_root.guy.head_root.guy.leftHand_root.guy.rightH
and_root.guy.body_root.guy.leftFoot_root.guy.ri
ghtFoot
_root.guy
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• hitTest would be written in onClipEvent(enter)Fram
  e

• 6 6 36

• 6 6 46656

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if (guy.hitTest(enemy)) if ((guy.head.hitTest(en
emy)) (guy.leftHand.hitTest(enemy))
(guy.rightHand.hitTest(enemy))
(guy.body.hitTest(enemy)) (guy.leftFoot.hi
tTest(enemy )) (guy.rightFoot.hitTest(enemy))
) // something important