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Elite on the BBC Micro

Charts: hm [Elite-A, Parasite]

Name: hm [Show more] Type: Subroutine Category: Charts Summary: Select the closest system and redraw the chart crosshairs
Context: See this subroutine in context in the source code References: This subroutine is called as follows: * TT102 calls hm * hyp calls hm

Set the system closest to galactic coordinates (QQ9, QQ10) as the selected system, redraw the crosshairs on the chart accordingly (if they are being shown), and, if this is not a space view, clear the bottom three text rows of the screen.
.hm JSR TT103 \ Draw small crosshairs at coordinates (QQ9, QQ10), \ which will erase the crosshairs currently there JSR TT111 \ Select the system closest to galactic coordinates \ (QQ9, QQ10) JSR TT103 \ Draw small crosshairs at coordinates (QQ9, QQ10), \ which will draw the crosshairs at our current home \ system JMP CLYNS \ Clear the bottom three text rows of the upper screen, \ and move the text cursor to column 1 on row 21, i.e. \ the start of the top row of the three bottom rows \ Return from the subroutine using a tail call