UI Collision Detection

[830008x]

How do I detect if one GUIObject is touching another?

I’m not expecting a script to be written for me, but, I just need some advice on how I should do this.

Thanks ahead of time!

[Hqsuperlabgames (PieRat)]

You can get the absolute positions and sizes of both and do some math to calculate if they intersect on the x and y both, if so, they’re touching.

You should read this:

[Solved] How do I check if a ui is touching another ui

I am making space invaders for a project of mine. I have made the movement and the enemy’s move. The only part I’m struggling with is the bullet. I can make a bullet fire easily, but how would I detect if it’s touching another ui, the enemy. I want it just like the classic spacer invaders, please if you know the solution tell me. Thanks, MrOpScripter

[nicknickphoenix (RoughinIt_Dev)]

Here is a function I wrote for you. Just put the params in:

function isTouching(guiObject1, guiObject2)
    local pos1 = guiObject1.AbsolutePosition
    local size1 = guiObject1.AbsoluteSize
    local pos2 = guiObject2.AbsolutePosition
    local size2 = guiObject2.AbsoluteSize

    local x1, y1, x2, y2 = pos1.X, pos1.Y, pos1.X + size1.X, pos1.Y + size1.Y
    local x3, y3, x4, y4 = pos2.X, pos2.Y, pos2.X + size2.X, pos2.Y + size2.Y

    if x2 < x3 or x1 > x4 or y2 < y3 or y1 > y4 then
        -- They are not overlapping
        return false
    else
        -- They are overlapping
        return true
    end
end

Please let me know if it worked or not

[830008x]

@nicknickphoenix I will test your function out soon, thanks for the reply. @Hqsuperlabgames Your reply was also incredible helpful.
However, I wrote my own, with some inspiration from many Devforum posts.

local function detectGUIOverlap(object1, object2)
	local result = false
	local objectsAtPosition = game.Players.LocalPlayer.PlayerGui:GetGuiObjectsAtPosition(object1.AbsolutePosition.X, object1.AbsolutePosition.Y)
	for i,v in pairs(objectsAtPosition) do
		if(v.Name == object2.Name) then
			result = true
		end
	end
	return result
end