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⌂ ∞ ▽ Elite on the 6502

Version analysis of SHIP_PYTHON_P

This code appears in the following versions (click to see it in the source code):

Code variations between these versions are shown below.

       Name: SHIP_PYTHON_P
       Type: Variable
   Category: Drawing ships
    Summary: Ship blueprint for a Python (pirate)
  Deep dive: Ship blueprints
             Comparing ship specifications

Code variation 1 of 5A variation in the comments only

This variation is blank in the Disc (flight) and 6502 Second Processor versions.

Master
 The ship blueprint for the pirate Python reuses the edges and faces data from
 the non-pirate Python, so the edges and faces data offsets are negative.


.SHIP_PYTHON_P

 EQUB 2                 \ Max. canisters on demise = 2
 EQUW 80 * 80           \ Targetable area          = 80 * 80

Code variation 2 of 5Specific to an individual platform

Tap on a block to expand it, and tap it again to revert.

Flight, 6502SP
Master
 EQUB LO(SHIP_PYTHON_P_EDGES - SHIP_PYTHON_P)      \ Edges data offset (low)
 EQUB LO(SHIP_PYTHON_P_FACES - SHIP_PYTHON_P)      \ Faces data offset (low)

 EQUB LO(SHIP_PYTHON_EDGES - SHIP_PYTHON_P)        \ Edges from Python
 EQUB LO(SHIP_PYTHON_FACES - SHIP_PYTHON_P)        \ Faces from Python

Code variation 3 of 5Related to an advanced feature

The advanced versions of Elite have an extra edge count for the ship colour; Python pirates are shown in cyan.

Tap on a block to expand it, and tap it again to revert.

Flight
6502SP, Master
 EQUB 85                \ Max. edge count          = (85 - 1) / 4 = 21

 EQUB 89                \ Max. edge count          = (89 - 1) / 4 = 22

 EQUB 0                 \ Gun vertex               = 0
 EQUB 42                \ Explosion count          = 9, as (4 * n) + 6 = 42
 EQUB 66                \ Number of vertices       = 66 / 6 = 11
 EQUB 26                \ Number of edges          = 26
 EQUW 200               \ Bounty                   = 200
 EQUB 52                \ Number of faces          = 52 / 4 = 13
 EQUB 40                \ Visibility distance      = 40
 EQUB 250               \ Max. energy              = 250
 EQUB 20                \ Max. speed               = 20

Code variation 4 of 5Specific to an individual platform

Tap on a block to expand it, and tap it again to revert.

Flight, 6502SP
Master
 EQUB HI(SHIP_PYTHON_P_EDGES - SHIP_PYTHON_P)      \ Edges data offset (high)
 EQUB HI(SHIP_PYTHON_P_FACES - SHIP_PYTHON_P)      \ Faces data offset (high)

 EQUB HI(SHIP_PYTHON_EDGES - SHIP_PYTHON_P)        \ Edges from Python
 EQUB HI(SHIP_PYTHON_FACES - SHIP_PYTHON_P)        \ Faces from Python

 EQUB 0                 \ Normals are scaled by    = 2^0 = 1
 EQUB %00011011         \ Laser power              = 3
                        \ Missiles                 = 3

.SHIP_PYTHON_P_VERTICES

      \    x,    y,    z, face1, face2, face3, face4, visibility
 VERTEX    0,    0,  224,     0,      1,    2,     3,         31    \ Vertex 0
 VERTEX    0,   48,   48,     0,      1,    4,     5,         31    \ Vertex 1
 VERTEX   96,    0,  -16,    15,     15,   15,    15,         31    \ Vertex 2
 VERTEX  -96,    0,  -16,    15,     15,   15,    15,         31    \ Vertex 3
 VERTEX    0,   48,  -32,     4,      5,    8,     9,         31    \ Vertex 4
 VERTEX    0,   24, -112,     9,      8,   12,    12,         31    \ Vertex 5
 VERTEX  -48,    0, -112,     8,     11,   12,    12,         31    \ Vertex 6
 VERTEX   48,    0, -112,     9,     10,   12,    12,         31    \ Vertex 7
 VERTEX    0,  -48,   48,     2,      3,    6,     7,         31    \ Vertex 8
 VERTEX    0,  -48,  -32,     6,      7,   10,    11,         31    \ Vertex 9
 VERTEX    0,  -24, -112,    10,     11,   12,    12,         31    \ Vertex 10

Code variation 5 of 5Specific to an individual platform

This variation is blank in the Master version.

Flight, 6502SP
.SHIP_PYTHON_P_EDGES

    \ vertex1, vertex2, face1, face2, visibility
 EDGE       0,       8,     2,     3,         31    \ Edge 0
 EDGE       0,       3,     0,     2,         31    \ Edge 1
 EDGE       0,       2,     1,     3,         31    \ Edge 2
 EDGE       0,       1,     0,     1,         31    \ Edge 3
 EDGE       2,       4,     9,     5,         31    \ Edge 4
 EDGE       1,       2,     1,     5,         31    \ Edge 5
 EDGE       2,       8,     7,     3,         31    \ Edge 6
 EDGE       1,       3,     0,     4,         31    \ Edge 7
 EDGE       3,       8,     2,     6,         31    \ Edge 8
 EDGE       2,       9,     7,    10,         31    \ Edge 9
 EDGE       3,       4,     4,     8,         31    \ Edge 10
 EDGE       3,       9,     6,    11,         31    \ Edge 11
 EDGE       3,       5,     8,     8,          7    \ Edge 12
 EDGE       3,      10,    11,    11,          7    \ Edge 13
 EDGE       2,       5,     9,     9,          7    \ Edge 14
 EDGE       2,      10,    10,    10,          7    \ Edge 15
 EDGE       2,       7,     9,    10,         31    \ Edge 16
 EDGE       3,       6,     8,    11,         31    \ Edge 17
 EDGE       5,       6,     8,    12,         31    \ Edge 18
 EDGE       5,       7,     9,    12,         31    \ Edge 19
 EDGE       7,      10,    12,    10,         31    \ Edge 20
 EDGE       6,      10,    11,    12,         31    \ Edge 21
 EDGE       4,       5,     8,     9,         31    \ Edge 22
 EDGE       9,      10,    10,    11,         31    \ Edge 23
 EDGE       1,       4,     4,     5,         31    \ Edge 24
 EDGE       8,       9,     6,     7,         31    \ Edge 25

.SHIP_PYTHON_P_FACES

    \ normal_x, normal_y, normal_z, visibility
 FACE      -27,       40,       11,         31      \ Face 0
 FACE       27,       40,       11,         31      \ Face 1
 FACE      -27,      -40,       11,         31      \ Face 2
 FACE       27,      -40,       11,         31      \ Face 3
 FACE      -19,       38,        0,         31      \ Face 4
 FACE       19,       38,        0,         31      \ Face 5
 FACE      -19,      -38,        0,         31      \ Face 6
 FACE       19,      -38,        0,         31      \ Face 7
 FACE      -25,       37,      -11,         31      \ Face 8
 FACE       25,       37,      -11,         31      \ Face 9
 FACE       25,      -37,      -11,         31      \ Face 10
 FACE      -25,      -37,      -11,         31      \ Face 11
 FACE        0,        0,     -112,         31      \ Face 12