junglejourney

changeset 41:513dc8ee2a82

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Vary the emerge position depending on the player's position.
author David Boddie <david@boddie.org.uk>
date Sun Aug 21 16:02:00 2011 +0200
parents 3946b61beb36
children 99ef92fc83ae
files mapcode.oph
diffstat 1 files changed, 16 insertions(+), 4 deletions(-) [+]
line diff
     1.1 --- a/mapcode.oph	Sun Aug 21 15:56:33 2011 +0200
     1.2 +++ b/mapcode.oph	Sun Aug 21 16:02:00 2011 +0200
     1.3 @@ -1771,22 +1771,34 @@
     1.4      clc
     1.5      rts
     1.6  
     1.7 -emerge_position:                ; returns A=position
     1.8 +emerge_x_position:              ; returns A=position
     1.9      jsr unlimited_values
    1.10 -    lda $7d
    1.11 +    lda $3304
    1.12 +    and #2
    1.13 +    eor $7d
    1.14      and #7
    1.15      adc #1
    1.16      clc
    1.17      rts
    1.18  
    1.19 +emerge_y_position:              ; returns A=position
    1.20 +    jsr unlimited_values
    1.21 +    lda $3302
    1.22 +    and #2
    1.23 +    eor $7d
    1.24 +    and #7
    1.25 +    adc #1
    1.26 +    clc
    1.27 +    rts
    1.28 +
    1.29  emerge_character:           ; $74,$75=character address
    1.30  
    1.31      lda #63
    1.32      sta $33ff
    1.33  
    1.34 -    jsr emerge_position     ; obtain a y position
    1.35 +    jsr emerge_y_position     ; obtain a y position
    1.36      tax
    1.37 -    jsr emerge_position     ; obtain an x position
    1.38 +    jsr emerge_x_position     ; obtain an x position
    1.39      sta $80                 ; temporary
    1.40      tay
    1.41