Difference between revisions of "DistanceBasedCollision"
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Another way of detecting collisions. This type works perfectly with circles. | 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.) | 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 | ||
<source lang="lua"> | <source lang="lua"> | ||
− | function | + | function checkCircularCollision(ax, ay, bx, bu, ar, br) |
local dx = bx - ax | local dx = bx - ax | ||
local dy = by - ay | local dy = by - ay |
Revision as of 06:32, 28 September 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, bu, 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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