Life counter

    local lives = 5
    local lifeIcons={}
        local maxLives = 5
        local i
        local function health(currentLives)
           for i = 1, currentLives do
            if lifeIcons[i] then
                lifeIcons[i].isVisible = true
            else
                lifeIcons[i] = display.newImage("heart.png")
                lifeIcons[i].x = 10 + (lifeIcons[i].contentWidth * (i - 1))
                lifeIcons[i].y = 30 -- start at 10,10
            end
            end
        for i = currentLives + 1, #lifeIcons do
            lifeIcons[i].isVisible = false
        end
        end
        health(maxLives)