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| author | Jesse Luehrs <doy@tozt.net> | 2014-10-08 15:53:31 -0400 |
|---|---|---|
| committer | Jesse Luehrs <doy@tozt.net> | 2014-10-08 15:53:31 -0400 |
| commit | 010b3e9b73793b5eec2672e095062da29da907fd (patch) | |
| tree | 7d5617811c9a379503f2ee7e42f2bbce546472ad | |
| parent | fe156a97d5373cd9a7b093ab1c40bda403ad93fb (diff) | |
| download | nes-snake-010b3e9b73793b5eec2672e095062da29da907fd.tar.gz nes-snake-010b3e9b73793b5eec2672e095062da29da907fd.zip | |
don't draw the snake when on the title screen
| -rw-r--r-- | main.s | 13 |
1 files changed, 12 insertions, 1 deletions
@@ -147,9 +147,13 @@ NMI: PHA LDA game_state + BEQ reset_sprites CMP #$01 - BNE end_nmi + BEQ draw_head + CMP #$02 + BEQ end_nmi +draw_head: LDA head_y STA $0200 LDA #$00 @@ -158,7 +162,14 @@ NMI: STA $0202 LDA head_x STA $0203 + JMP do_dmi +reset_sprites: + LDA #$FE + STA $0200 + STA $0203 + +do_dmi: LDA #$00 STA $2003 LDA #$02 |