Featured Flash FLA 11303 Flash Movies | 7 New Flash Movies Added What's New | Top 100 Featured FLA » Author: Nitin Tikhe » Title: Cart » Description: This Animation Tut is a fun and useful for kids below 15 years. Watch the Flag, Doors, Stick and Horse movements. » More by Nitin Tikhe Random FLAs | Add Flash Movie Featured Flash Site 6008 Flash Sites | 0 New Flash Links What's New | Top 100 Flash Site Featured Site » Posted in the Flash Kit Links section » Title: Banana Swimwear » Description: This is a banana swim wear interactive catalog we designed and animated in Flash Random Links | Add your own Flash Related Links

1255 Tutorials 7 New Tutorials Added! What's New | Top100 » Make flash video player for broadcasting live streaming video / TV on website » How to convert the project file of Flash Demo Builder 2.0 into FLV file » FLV to PSP for Mac - How to convert YouTube video to PSP on mac » How to Convert FLV to MP4 for Playback on iPod » how to download and convert youtube video to AVI with Leawo Free FLV converter » Flash Multi-player Game Tutorial - TicTacToe » How to make Flash elearning tutorials with screen recorder? » Fader API:Slideshow with MovieClips on stage » How to convert MS PPT file into an FLV File » Unknown Tag: Title10 Random Tutorial | Add Site

Network Design Manager The Computer Merchant, Ltd US-VA-Hampton Post A Job | Post A Resume

Tutorials Home What's New Top Rated Submit myTutes Random!

Tutorials » Actionscripting

Detecting the Mouse Angle - Easily
Author: Jorian Cunliffe

Theory

Skip this if you want...

The basic concept is that the mouse angle will fall into 1 of the 4 quadrants, they are:

    0 -  90    (right and down)    +x +y
   90 - 180    (left and down)     -x +y
  180 - 270      (left and up)     -x -y
  270 - 360      (right and up)    +x -y

The "mouse coordinate" is the "coordinate of the mouse" minus the "coordinate of the origin"
ie. if origin(10,10) & mouse(20, -20), then the mouse coordinate becomes (10, -30). This is right and up or +x -y.

The angle is then APPROXIMATED using a simple algorithm. The algorithm will not be explained as approximations never really make "sense" - just look at the code. The movement for a bullet from the origin to the mouse is calculated EXACTLY. So for the purpose of games this is usually ok.

» Forums
	More help? Search our boards for quick answers!

Please rate this tutorial, 10 is the top rating, you can also click the comments link to read/write a review.

10 9 8 7 6 5 4 3 2 1