Scripting Tutorial-05

<source lang="lsl"> /*

 Fu's basic light switch

   v0.1
   - basic on/off toggle

• /

integer DEBUG = TRUE;

integer LINK_LAMP = 3; // named like this to match LSL's LINK_ROOT constant used below

default {

   state_entry() {

       state unlit;
   }

}

state unlit {

   state_entry() {

       if(DEBUG){ llOwnerSay("state: unlit"); }

       llSetLinkPrimitiveParamsFast(LINK_ROOT, 

           [ PRIM_FULLBRIGHT, ALL_SIDES, FALSE ]
       );

       llSetLinkPrimitiveParamsFast(LINK_LAMP, 

           // the UUID here is the OSgrid specific one for 'Blank Texture'

           [ PRIM_FULLBRIGHT,  ALL_SIDES, FALSE,
             PRIM_TEXTURE,     ALL_SIDES, "5748decc-f629-461c-9a36-a35a221fe21f", <1,1,0>, <0,0,0>, 0 ]
       );
   }

   touch_end(integer num_touches) {

       if(llDetectedLinkNumber(0) == LINK_ROOT) {

           state lit;
       }
   }

}

state lit {

   state_entry() {

       if(DEBUG){ llOwnerSay("state: lit"); }

       llSetLinkPrimitiveParamsFast(LINK_ROOT, 
       
           [ PRIM_FULLBRIGHT, ALL_SIDES, TRUE ]
       );

       llSetLinkPrimitiveParamsFast(LINK_LAMP, 

           // like in the 'unlit' state, the UUID here is the OSgrid specific one for 'Blank Texture'

           [ PRIM_FULLBRIGHT,  ALL_SIDES, TRUE,
             PRIM_TEXTURE,     ALL_SIDES, "5748decc-f629-461c-9a36-a35a221fe21f", <1,1,0>, <0,0,0>, 0 ]
       );
   }

   touch_end(integer num_touches) {
       
       if(llDetectedLinkNumber(0) == LINK_ROOT) {

           state unlit;
       }
   }

} </source>