The SHIP_COBRA_MK_1 (Bank 1) variable - Elite on the BBC Micro and NES

       Name: SHIP_COBRA_MK_1                                         [Show more]
       Type: Variable
   Category: Drawing ships
    Summary: Ship blueprint for a Cobra Mk I
  Deep dive: Ship blueprints
    Context: See this variable in context in the source code
 References: This variable is used as follows:
             * Unused copy of XX21 uses SHIP_COBRA_MK_1
             * XX21 uses SHIP_COBRA_MK_1


.SHIP_COBRA_MK_1

 EQUB 3                 ; Max. canisters on demise = 3
 EQUW 99 * 99           ; Targetable area          = 99 * 99

 EQUB LO(SHIP_COBRA_MK_1_EDGES - SHIP_COBRA_MK_1)  ; Edges data offset (low)
 EQUB LO(SHIP_COBRA_MK_1_FACES - SHIP_COBRA_MK_1)  ; Faces data offset (low)

 EQUB 73                ; Max. edge count          = (73 - 1) / 4 = 18
 EQUB 40                ; Gun vertex               = 40 / 4 = 10
 EQUB 26                ; Explosion count          = 5, as (4 * n) + 6 = 26
 EQUB 66                ; Number of vertices       = 66 / 6 = 11
 EQUB 18                ; Number of edges          = 18
 EQUW 75                ; Bounty                   = 75
 EQUB 40                ; Number of faces          = 40 / 4 = 10
 EQUB 19                ; Visibility distance      = 19
 EQUB 90                ; Max. energy              = 90
 EQUB 26                ; Max. speed               = 26

 EQUB HI(SHIP_COBRA_MK_1_EDGES - SHIP_COBRA_MK_1)  ; Edges data offset (high)
 EQUB HI(SHIP_COBRA_MK_1_FACES - SHIP_COBRA_MK_1)  ; Faces data offset (high)

 EQUB 2                 ; Normals are scaled by    = 2^2 = 4
 EQUB %00010010         ; Laser power              = 2
                        ; Missiles                 = 2

.SHIP_COBRA_MK_1_VERTICES

      ;    x,    y,    z, face1, face2, face3, face4, visibility
 VERTEX  -18,   -1,   50,     1,      0,    3,     2,         31    ; Vertex 0
 VERTEX   18,   -1,   50,     1,      0,    5,     4,         31    ; Vertex 1
 VERTEX  -66,    0,    7,     3,      2,    8,     8,         31    ; Vertex 2
 VERTEX   66,    0,    7,     5,      4,    9,     9,         31    ; Vertex 3
 VERTEX  -32,   12,  -38,     6,      2,    8,     7,         31    ; Vertex 4
 VERTEX   32,   12,  -38,     6,      4,    9,     7,         31    ; Vertex 5
 VERTEX  -54,  -12,  -38,     3,      1,    8,     7,         31    ; Vertex 6
 VERTEX   54,  -12,  -38,     5,      1,    9,     7,         31    ; Vertex 7
 VERTEX    0,   12,   -6,     2,      0,    6,     4,         20    ; Vertex 8
 VERTEX    0,   -1,   50,     1,      0,    1,     1,          2    ; Vertex 9
 VERTEX    0,   -1,   60,     1,      0,    1,     1,         31    ; Vertex 10

.SHIP_COBRA_MK_1_EDGES

    ; vertex1, vertex2, face1, face2, visibility
 EDGE       1,       0,     1,     0,         31    ; Edge 0
 EDGE       0,       2,     3,     2,         31    ; Edge 1
 EDGE       2,       6,     8,     3,         31    ; Edge 2
 EDGE       6,       7,     7,     1,         31    ; Edge 3
 EDGE       7,       3,     9,     5,         31    ; Edge 4
 EDGE       3,       1,     5,     4,         31    ; Edge 5
 EDGE       2,       4,     8,     2,         31    ; Edge 6
 EDGE       4,       5,     7,     6,         31    ; Edge 7
 EDGE       5,       3,     9,     4,         31    ; Edge 8
 EDGE       0,       8,     2,     0,         20    ; Edge 9
 EDGE       8,       1,     4,     0,         20    ; Edge 10
 EDGE       4,       8,     6,     2,         16    ; Edge 11
 EDGE       8,       5,     6,     4,         16    ; Edge 12
 EDGE       4,       6,     8,     7,         31    ; Edge 13
 EDGE       5,       7,     9,     7,         31    ; Edge 14
 EDGE       0,       6,     3,     1,         20    ; Edge 15
 EDGE       1,       7,     5,     1,         20    ; Edge 16
 EDGE      10,       9,     1,     0,          2    ; Edge 17

.SHIP_COBRA_MK_1_FACES

    ; normal_x, normal_y, normal_z, visibility
 FACE        0,       41,       10,         31    ; Face 0
 FACE        0,      -27,        3,         31    ; Face 1
 FACE       -8,       46,        8,         31    ; Face 2
 FACE      -12,      -57,       12,         31    ; Face 3
 FACE        8,       46,        8,         31    ; Face 4
 FACE       12,      -57,       12,         31    ; Face 5
 FACE        0,       49,        0,         31    ; Face 6
 FACE        0,        0,     -154,         31    ; Face 7
 FACE     -121,      111,      -62,         31    ; Face 8
 FACE      121,      111,      -62,         31    ; Face 9

[X]

Macro EDGE (category: Drawing ships)

Macro definition for adding edges to ship blueprints

[X]

Macro FACE (category: Drawing ships)

Macro definition for adding faces to ship blueprints

[X]

Variable SHIP_COBRA_MK_1 (category: Drawing ships)

Ship blueprint for a Cobra Mk I

[X]

Label SHIP_COBRA_MK_1_EDGES is local to this routine

[X]

Label SHIP_COBRA_MK_1_FACES is local to this routine

[X]

Macro VERTEX (category: Drawing ships)

Macro definition for adding vertices to ship blueprints

Drawing ships: SHIP_COBRA_MK_1

[NES version, Bank 1]