The SHIP_CANISTER (Bank 1) variable

       Name: SHIP_CANISTER                                           [Show more]
       Type: Variable
   Category: Drawing ships
    Summary: Ship blueprint for a cargo canister
  Deep dive: Ship blueprints
    Context: See this variable in context in the source code
 References: This variable is used as follows:
             * XX21 uses SHIP_CANISTER


.SHIP_CANISTER

 EQUB 0                 ; Max. canisters on demise = 0
 EQUW 20 * 20           ; Targetable area          = 20 * 20

 EQUB LO(SHIP_CANISTER_EDGES - SHIP_CANISTER)      ; Edges data offset (low)
 EQUB LO(SHIP_CANISTER_FACES - SHIP_CANISTER)      ; Faces data offset (low)

 EQUB 53                ; Max. edge count          = (53 - 1) / 4 = 13
 EQUB 0                 ; Gun vertex               = 0
 EQUB 18                ; Explosion count          = 3, as (4 * n) + 6 = 18
 EQUB 60                ; Number of vertices       = 60 / 6 = 10
 EQUB 15                ; Number of edges          = 15
 EQUW 0                 ; Bounty                   = 0
 EQUB 28                ; Number of faces          = 28 / 4 = 7
 EQUB 12                ; Visibility distance      = 12
 EQUB 17                ; Max. energy              = 17
 EQUB 15                ; Max. speed               = 15

 EQUB HI(SHIP_CANISTER_EDGES - SHIP_CANISTER)      ; Edges data offset (high)
 EQUB HI(SHIP_CANISTER_FACES - SHIP_CANISTER)      ; Faces data offset (high)

 EQUB 2                 ; Normals are scaled by    = 2^2 = 4
 EQUB %00000000         ; Laser power              = 0
                        ; Missiles                 = 0

.SHIP_CANISTER_VERTICES

      ;    x,    y,    z, face1, face2, face3, face4, visibility
 VERTEX   24,   16,    0,     0,      1,    5,     5,         31    ; Vertex 0
 VERTEX   24,    5,   15,     0,      1,    2,     2,         31    ; Vertex 1
 VERTEX   24,  -13,    9,     0,      2,    3,     3,         31    ; Vertex 2
 VERTEX   24,  -13,   -9,     0,      3,    4,     4,         31    ; Vertex 3
 VERTEX   24,    5,  -15,     0,      4,    5,     5,         31    ; Vertex 4
 VERTEX  -24,   16,    0,     1,      5,    6,     6,         31    ; Vertex 5
 VERTEX  -24,    5,   15,     1,      2,    6,     6,         31    ; Vertex 6
 VERTEX  -24,  -13,    9,     2,      3,    6,     6,         31    ; Vertex 7
 VERTEX  -24,  -13,   -9,     3,      4,    6,     6,         31    ; Vertex 8
 VERTEX  -24,    5,  -15,     4,      5,    6,     6,         31    ; Vertex 9

.SHIP_CANISTER_EDGES

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

.SHIP_CANISTER_FACES

    ; normal_x, normal_y, normal_z, visibility
 FACE       96,        0,        0,         31      ; Face 0
 FACE        0,       41,       30,         31      ; Face 1
 FACE        0,      -18,       48,         31      ; Face 2
 FACE        0,      -51,        0,         31      ; Face 3
 FACE        0,      -18,      -48,         31      ; Face 4
 FACE        0,       41,      -30,         31      ; Face 5
 FACE      -96,        0,        0,         31      ; Face 6

[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_CANISTER (category: Drawing ships)

Ship blueprint for a cargo canister

[X]

Label SHIP_CANISTER_EDGES is local to this routine

[X]

Label SHIP_CANISTER_FACES is local to this routine

[X]

Macro VERTEX (category: Drawing ships)

Macro definition for adding vertices to ship blueprints

Drawing ships: SHIP_CANISTER

[NES version, Bank 1]