Difference between revisions of "DistanceBasedCollision"

(Changed a few things)
m (EPIC FAIL... typed in "bu" instead of "by")
Line 2: Line 2:
 
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  
+
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">
function checkCircularCollision(ax, ay, bx, bu, ar, br)
+
function checkCircularCollision(ax, ay, bx, by, ar, br)
 
local dx = bx - ax
 
local dx = bx - ax
 
local dy = by - ay
 
local dy = by - ay

Revision as of 02:27, 2 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)
	if dist < ar + br then
		return true
	else
		return false
	end
end

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