diff options
Diffstat (limited to 'src-68k/core/menu.68k')
| -rw-r--r-- | src-68k/core/menu.68k | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/src-68k/core/menu.68k b/src-68k/core/menu.68k new file mode 100644 index 0000000..d5f7914 --- /dev/null +++ b/src-68k/core/menu.68k @@ -0,0 +1,141 @@ +;**************************************************************************** +; MainMenu +; Menu where you get to select the song and such +; The main screen, bah... +;**************************************************************************** + +MainMenu: + move.w #0, (RAM_CurrSong) ; Selected song + bsr UpdateMenu ; Show description of first song + + move.l #0, (RAM_LArrowAnim) ; Reset arrows anim + move.w #$8407, (RAM_BGAnim) ; Reset background anim + +@MainLoop: + move.b (RAM_JoyPress), d0 ; Get joypad input + + btst.l #2, d0 ; Previous song? + beq.s @NoLeft + + move.w (RAM_CurrSong), d7 ; Select previous song + bne.s @NotTooLeft + move.w #NumSongs, d7 +@NotTooLeft: + subq.w #1, d7 + move.w d7, (RAM_CurrSong) + + bsr UpdateMenu ; Update current song + move.w #28, (RAM_LArrowAnim) ; Animate left arrow + lea (SFX_Beep), a0 ; Beep! + bsr Echo_PlaySFX +@NoLeft: + + btst.l #3, d0 ; Next song? + beq.s @NoRight + + move.w (RAM_CurrSong), d7 ; Select next song + addq.w #1, d7 + cmp.w #NumSongs, d7 + blt.s @NotTooRight + moveq #0, d7 +@NotTooRight: + move.w d7, (RAM_CurrSong) + bsr UpdateMenu ; Update current song + + move.w #28, (RAM_RArrowAnim) ; Animate right arrow + lea (SFX_Beep), a0 ; Beep! + bsr Echo_PlaySFX +@NoRight: + + btst.l #5, d0 ; Play song? + bne.s @DoPlay + btst.l #6, d0 + beq.s @NoPlay +@DoPlay: + lea (SongList), a1 ; Get song address + move.w (RAM_CurrSong), d7 + lsl.w #4, d7 + lea (a1,d7.w), a1 + move.l (a1), a0 + bsr Echo_PlayBGM ; Play song +@NoPlay: + + btst.l #4, d0 ; Stop song? + beq.s @NoStop + bsr Echo_StopBGM +@NoStop: + + btst.l #7, d0 ; Debug key + beq.s @NoDebug + lea (BGM_Test), a0 ; Play test BGM + ;bsr Echo_PlayBGM + lea (SFX_Test), a0 ; Play test SFX + bsr Echo_PlaySFX +@NoDebug: + + lea (@ArrowPal), a0 + + move.w (RAM_LArrowAnim), d0 ; Animate left arrow + move.l (a0,d0.w), d1 + move.l #$C0060000, ($C00004) + move.l d1, ($C00000) + subq.w #2, d0 + bge.s @NoLArrowOver + moveq #0, d0 +@NoLArrowOver: + move.w d0, (RAM_LArrowAnim) + + move.w (RAM_RArrowAnim), d0 ; Animate right arrow + move.l (a0,d0.w), d1 + move.l #$C0260000, ($C00004) + move.l d1, ($C00000) + subq.w #2, d0 + bge.s @NoRArrowOver + moveq #0, d0 +@NoRArrowOver: + move.w d0, (RAM_RArrowAnim) + + move.w (RAM_BGAnim), d0 ; Animate background + bchg.l #1, d0 + move.w d0, (RAM_BGAnim) + move.w d0, ($C00004) + + bsr VSync ; Next frame + bsr ReadJoypad + bra @MainLoop + +;**************************************************************************** + +@ArrowPal: + dc.w $00E, $00E, $02E, $02E, $04E, $04E, $06E, $06E + dc.w $28E, $28E, $4AE, $4AE, $6CE, $6CE, $8EE, $8EE + +;**************************************************************************** +; UpdateMenu +; Shows the current option on screen +;**************************************************************************** + +UpdateMenu: + bsr ClearLines ; Clear lines + + lea (SongList), a1 ; Get address of song data + move.w (RAM_CurrSong), d0 + lsl.w #4, d0 + lea (a1,d0.w), a1 + addq.l #4, a1 + + moveq #7, d0 ; Write song title + moveq #9, d1 + move.w #$A000, d2 + move.l (a1)+, a0 + bsr WriteString + + addq.w #2, d1 ; Write song description + move.w #$C000, d2 + move.l (a1)+, a0 + bsr WriteString + addq.w #2, d1 + move.l (a1)+, a0 + bsr WriteString + + rts ; End of subroutine |