Collision Detection

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Topic Summary: This topic will show you how to write code that detects when two Movie clip objects occupy the same space at the same time and create a collision. When a collision is detected, you can add a resulting action, such as your character scoring points or losing a life. Note: Collision Detection is also referred to as "Hit Test."


Prerequisites Needed

Topic Assignments

Read this tutorial on Hit Test (Collision Detection)

Adjust the hit area on the frog's tongue in the Fly Catcher Tutorial.


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  • Upload the assets (.SWF and .FLA) you created to your Team page if you are working on a Team game, or to your "My Projects" page if you are working alone.


Update the Blog

  • Write a Blog post about this topic, share your learning experience!


Related Links and Tutorials


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Image:Icons-mini-icon_user.gifImage:Icons-mini-icon_user.gifImage:Icons-mini-icon_user.gif Students Contributions

Here are examples of what other students did in this topic. Please add your work to this section.

Here is an example of ball falling and landing on a platform:

Download the source code (FLA file) of this example to learn from it.


Here is an example of creating walls around the stage area so the character can't move off the stage:
Download the source code (FLA file) of this example to learn from it.

Here is an example of adding obstacles to the stage so that character can't move through them:
Download the source code (FLA file) of this example to learn from it.

Tiffany (tnt2010)

Austin (ArchlordoftheZ.S.)

Wolf The Lycan


bryan kycoo

Media:Collision_detedtion.fla

Anna (baby gurl)

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