diff options
| -rw-r--r-- | main.s | 67 | ||||
| -rw-r--r-- | sprites.chr | bin | 8192 -> 8192 bytes |
2 files changed, 67 insertions, 0 deletions
@@ -113,6 +113,25 @@ clrmem: LDA #$00 STA $0202 + LDA #$2D + STA $0204 + LDA #$00 + STA $0206 + LDA #$40 + STA $0207 + LDA #$2D + STA $0208 + LDA #$00 + STA $020A + LDA #$48 + STA $020B + LDA #$2D + STA $020C + LDA #$00 + STA $020E + LDA #$50 + STA $020F + ; Second wait for vblank, PPU is ready after this - BIT $2002 BPL - @@ -355,6 +374,7 @@ eat_apple: LDA speed.w, x STA frame_skip JSR new_apple + JSR draw_score draw_sprites: LDX #$00 @@ -423,6 +443,8 @@ start_game: ; {{{ JSR new_apple + JSR draw_score + - BIT $2002 BPL - @@ -625,6 +647,51 @@ draw_sprite_at_head: ; {{{ STX num_draws RTS ; }}} +draw_score: ; {{{ + LDA #$30 + STA $0205 + STA $0209 + STA $020D + + LDA length +hundreds: + CMP #100 + BMI tens + SEC + SBC #100 + LDX $0205 + INX + TAY + TXA + STA $0205 + TYA + JMP hundreds +tens: + CMP #10 + BMI ones + SEC + SBC #10 + LDX $0209 + INX + TAY + TXA + STA $0209 + TYA + JMP tens +ones: + CMP #1 + BMI end_draw_score + SEC + SBC #1 + LDX $020D + INX + TAY + TXA + STA $020D + TYA + JMP ones +end_draw_score: + RTS ; }}} test_body_collision ; {{{ LDA head_x PHA diff --git a/sprites.chr b/sprites.chr Binary files differindex 9f333de..a19ded5 100644 --- a/sprites.chr +++ b/sprites.chr |