Drawing ships: EDGE

       Name: EDGE                                                    [Show more]
       Type: Macro
   Category: Drawing ships
    Summary: Macro definition for adding edges to ship blueprints
  Deep dive: Ship blueprints
             Drawing ships
    Context: See this macro in context in the source code
 References: This macro is used as follows:
             * SHIP_ADDER uses EDGE
             * SHIP_ASTEROID uses EDGE
             * SHIP_BOULDER uses EDGE
             * SHIP_CANISTER uses EDGE
             * SHIP_COBRA_MK_1 uses EDGE
             * SHIP_CORIOLIS uses EDGE
             * SHIP_ESCAPE_POD uses EDGE
             * SHIP_MORAY uses EDGE
             * SHIP_PYTHON uses EDGE
             * SHIP_SHUTTLE_MK_2 uses EDGE
             * SHIP_VIPER uses EDGE


 The following macro is used to build the ship blueprints:

   EDGE vertex1, vertex2, face1, face2, visibility


 Arguments:

   vertex1              The number of the vertex at the start of the edge

   vertex1              The number of the vertex at the end of the edge

   face1                The number of face 1 associated with this edge

   face2                The number of face 2 associated with this edge

   visibility           The visibility distance, beyond which the edge is not
                        shown


MACRO EDGE vertex1, vertex2, face1, face2, visibility

 f = face1 + (face2 << 4)
 EQUB visibility, f, vertex1 << 2, vertex2 << 2

ENDMACRO