ship collision

function Ship:crashShips()
    for s,sh in pairs(Ships) do
        if sh ~= nil and sh ~= self then
            self:collide(sh)
        end
    end
end

function Ship:collide(object)
    local dist = self.pos:dist(object.pos)
    if dist < 19 then
        print("ship ", self, self.name, object, object.name)
        local n = 0
        for s,sh in pairs(Ships) do
            n = n + 1
        end
        print(n, "ships")
        self:die()
        --object:die() -- other guy will do himself
    end
end

function Ship:die()
    table.insert(Adds,Explosion(self.pos, self.col))
    table.insert(Deletes, self)
end