local function IsVisible(targetHead, localHead, targetCharacter, localCharacter)
    local params = RaycastParams.new()
    params.FilterType = RaycastFilterType.Exclude
    params.FilterDescendantsInstances = { localCharacter, targetCharacter }
    params.IgnoreWater = true
    
    local origin = localHead.Position
    local direction = targetHead.Position - origin
    local result = workspace:Raycast(origin, direction, params)
    
    -- If ray hits no obstacles, player is directly visible
    return result == nil
end