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Elite on the BBC Micro

Maths (Geometry): MAS4 [Cassette version]

Name: MAS4 [Show more] Type: Subroutine Category: Maths (Geometry) Summary: Calculate a cap on the maximum distance to a ship
Context: See this subroutine in context in the source code References: This subroutine is called as follows: * Main flight loop (Part 7 of 16) calls MAS4 * TACTICS (Part 1 of 7) calls MAS4 * TACTICS (Part 6 of 7) calls MAS4

Logical OR the value in A with the high bytes of the ship's position (x_hi, y_hi and z_hi). Returns: A A OR x_hi OR y_hi OR z_hi
.MAS4 ORA INWK+1 \ OR A with x_hi, y_hi and z_hi ORA INWK+4 ORA INWK+7 RTS \ Return from the subroutine