LÖVE

Code: Select all

local function checkCollision(img_data1,x1,y1,w1,h1, img_data2,x2,y2,w2,h2)

    -- Calculate the coordinates of the corners of the two objects
    local left1, top1, right1, bottom1 = x1, y1, x1 + w1, y1 + h1
    local left2, top2, right2, bottom2 = x2, y2, x2 + w2, y2 + h2

    -- Check if there is an intersection between the two objects

    if right1 > left2 and left1 < right2 and bottom1 > top2 and top1 < bottom2 then

        -- Calculate the intersection area between the two objects
        local intersectionLeft = math.max(left1, left2)
        local intersectionTop = math.max(top1, top2)
        local intersectionRight = math.min(right1, right2)
        local intersectionBottom = math.min(bottom1, bottom2)

        local floor = math.floor

        -- Iterate through all pixels in the intersection area
        for x = intersectionLeft, intersectionRight-1 do
            for y = intersectionTop, intersectionBottom-1 do

                -- Calculate pixel coordinates in both images
                local playerPixelX, playerPixelY = floor(x-x1), floor(y - y1)
                local obstaclePixelX, obstaclePixelY = floor(x-x2), floor(y-y2)

                -- Check if both pixels are opaque
                local _,_,_,a1 = img_data1:getPixel(playerPixelX, playerPixelY)
                local _,_,_,a2 = img_data2:getPixel(obstaclePixelX, obstaclePixelY)

                if a1 > 0 and a2 > 0 then return true end

            end
        end

    end

    return false

end