In　wireless　sensor　and　actor　networks　(WSAN),　the　sensor　node　that　detects　an　event　always　uses　flooding　algorithm　to　discover　the　path　to　the　mobile　actor.　Although　the　flooding　algorithm　has　many　advantages　such　as　its　simplicity　and　reliability,　it　performs　poorly　in　energy　efficiency　and　scalability,　especially　in　a　dense　deployed　network.　In　this　paper,　we　propose　to　consider　the　flooding　algorithm　design　as　the　coverage　and　connectivity　problem:　the　data　packet　has　to　be　broadcast　by　a　set　of　connected　nodes,　while　their　transmission　range　has　to　cover　the　whole　network　to　ensure　that　the　mobile　actor　can　receive　the　data　packet.　Based　on　this　idea,　we　propose　a　new　algorithm　called　Striped-Flooding　based　on　the　strip-based　deployment　pattern　which　has　been　proved　to　provide　coverage　and　connectivity　with　minimum　number　of　nodes.　The　Striped-Flooding　uses　the　parameters　of　line　spacing　scaling　factor　and　deviation　to　control　the　flooding　process　such　that　the　deliver　rate　can　be　guaranteed.　The　analytical　and　numerical　results　prove　that　the　Striped-Flooding　algorithm　has　greatly　improvement　on　the　energy　efficiency　and　scalability,　especially　in　the　dense　deployed　WSAN.