Difference between revisions of "DistanceBasedCollision"

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It checks if the distance of one object to the other is less than the sum of their radii(plural of radius.)
 
It checks if the distance of one object to the other is less than the sum of their radii(plural of radius.)
  
Variable Definitions : ax, ay = circleA's coordinates; bx, by = circleB's coordinates; ar, br = circleA's, and circleB's radii, respectively  
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Variable Definitions : ax, ay = circleA's coordinates; bx, by = circleB's coordinates; ar, br = circleA's and circleB's radii, respectively  
  
 
<source lang="lua">
 
<source lang="lua">

Revision as of 03:56, 8 October 2012

Another way of detecting collisions. This type works perfectly with circles. It checks if the distance of one object to the other is less than the sum of their radii(plural of radius.)

Variable Definitions : ax, ay = circleA's coordinates; bx, by = circleB's coordinates; ar, br = circleA's and circleB's radii, respectively

function checkCircularCollision(ax, ay, bx, by, ar, br)
	local dx = bx - ax
	local dy = by - ay
	local dist = math.sqrt(dx * dx + dy * dy)
	return dist < ar + br
end

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