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Old 11-02-2010, 03:58 PM   #1
cmt9000
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Join Date: Sep 2007
Posts: 44
Default line hitting moving target

I'm drawing a laser fired from a ship like this:

Code:
 //endPoint = ending X value of line(right edge of stage)
 //shipX & shipY = laser start coordinates(starts from ship location)
 this.graphics.lineStyle(1, 0X0000FF); 
 this.graphics.moveTo(shipX, shipY);   
 this.graphics.lineTo(endPoint, shipY);
It fires from left to right.

I also have moving targets on my stage that move from right to left.

Is there any property or method I could use to check the X & Y coordinates of my laser(line) to see if its "hit" a target?

Somehow, I need to get the X value of the laser, and see if it equals the first X value of the target that it encounters. If they equal, then I have a "hit".

Any thoughts or ideas on how to best accomplish this?

Thanks!
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Old 11-03-2010, 01:12 PM   #2
bluemagica
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Join Date: Feb 2008
Posts: 387
Default

Ways:
1) for each target in the array: check if laser.x==target[i].x
2) make the laser into a sprite, and simply hitTest that against the targets with shapeflag on.
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