integer Handle;

default {
    state_entry() {
        Handle = llListen(5, "", NULL_KEY, ""); // start listening

    }

    touch_start(integer total_number) {
        // when touched...
        llListenControl(Handle, TRUE); // ...enable listen
    }
    
    listen(integer channel, string name, key id, string message) {
        // when told "off"...
        if (message == "off") {
            llListenControl(Handle, FALSE);
        }
        else {
            if (message == "black" || message == "blackwalls")
            llSetPrimitiveParams([
            PRIM_COLOR, ALL_SIDES, <0, 0, 0>, 1.0, 
            PRIM_TEXTURE, ALL_SIDES, "5748decc-f629-461c-9a36-a35a221fe21f", <1,1,0>, <0.0,0.0,0>, 0.0]);
            if (message == "grid" || message == "gridwalls")
            llSetPrimitiveParams([
            PRIM_COLOR, ALL_SIDES, <255, 255, 255>, 1.0, 
            PRIM_TEXTURE, ALL_SIDES, "aebd4b83-6aea-b0ec-734c-f2c5e16c661a", <1,1,0>, <0.0,0.0,0>, 0.0]);
            if (message == "glass" || message == "glasswalls")
            llSetPrimitiveParams([
            PRIM_COLOR, ALL_SIDES, <255, 255, 255>, 1.0, 
            PRIM_TEXTURE, ALL_SIDES, "5b2eb7d3-2e83-7a3e-d944-8baa3f971fec", <1,1,0>, <0.0,0.0,0>, 0.0]);
            if (message == "wood" || message == "woodwalls")
            llSetPrimitiveParams([
            PRIM_COLOR, ALL_SIDES, <255, 255, 255>, 1.0, 
            PRIM_TEXTURE, ALL_SIDES, "89556747-24cb-43ed-920b-47caed15465f", <1,1,0>, <0.0,0.0,0>, 0.0]);
            if (message == "dirt" || message == "dirtwalls")
            llSetPrimitiveParams([
            PRIM_COLOR, ALL_SIDES, <255, 255, 255>, 1.0, 
            PRIM_TEXTURE, ALL_SIDES, "0bc58228-74a0-7e83-89bc-5c23464bcec5", <1,1,0>, <0.0,0.0,0>, 0.0]);
            if (message == "grass" || message == "grasswalls")
            llSetPrimitiveParams([
            PRIM_COLOR, ALL_SIDES, <255, 255, 255>, 1.0, 
            PRIM_TEXTURE, ALL_SIDES, "63338ede-0037-c4fd-855b-015d77112fc8", <1,1,0>, <0.0,0.0,0>, 0.0]);
            if (message == "white" || message == "whitewalls")
            llSetPrimitiveParams([
            PRIM_COLOR, ALL_SIDES, <255, 255, 255>, 1.0, 
            PRIM_TEXTURE, ALL_SIDES, "5748decc-f629-461c-9a36-a35a221fe21f", <1,1,0>, <0.0,0.0,0>, 0.0]);
            if (message == "rock" || message == "rockwalls")
            llSetPrimitiveParams([
            PRIM_COLOR, ALL_SIDES, <255, 255, 255>, 1.0, 
            PRIM_TEXTURE, ALL_SIDES, "53a2f406-4895-1d13-d541-d2e3b86bc19c", <1,1,0>, <0.0,0.0,0>, 0.0]);
            if (message == "mountain" || message == "mountainwalls")
            llSetPrimitiveParams([
            PRIM_COLOR, ALL_SIDES, <255, 255, 255>, 1.0, 
            PRIM_TEXTURE, ALL_SIDES, "303cd381-8560-7579-23f1-f0a880799740", <1,1,0>, <0.0,0.0,0>, 0.0]);
            if (message == "video" || message == "videowalls")
            llSetPrimitiveParams([
            PRIM_COLOR, ALL_SIDES, <255, 255, 255>, 1.0, 
            PRIM_TEXTURE, ALL_SIDES, "6e0f05ad-1809-4edc-df29-fae3d2a6c9b8", <1,1,0>, <0.0,0.0,0>, 0.0]);
            if (message == "light" || message == "lightwalls")
            llSetPrimitiveParams([
            PRIM_MATERIAL, PRIM_MATERIAL_LIGHT]);
            if (message == "dark" || message == "darkwalls")
            llSetPrimitiveParams([
            PRIM_MATERIAL, PRIM_MATERIAL_WOOD]);
            if (message == "phantom" || message == "phantomwalls")
            llSetPrimitiveParams([
            PRIM_PHANTOM, TRUE]);
            if (message == "solid" || message == "solidwalls")
            llSetPrimitiveParams([
            PRIM_PHANTOM, FALSE]);
            if (message == "hide" || message == "hidewalls")
            llSetPrimitiveParams([
            PRIM_COLOR, ALL_SIDES, <255, 255, 255>, 0.0]);
                    
    }
    }
}