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Diffstat (limited to 'src/player.s')
| -rw-r--r-- | src/player.s | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/player.s b/src/player.s index 5fe6d59..aac5dd0 100644 --- a/src/player.s +++ b/src/player.s @@ -236,6 +236,18 @@ ;; Updates the `zp_velocity_y` and the `zp_position_y` depending on whether ;; the player is throttling or gravity should just apply. .proc update_vertical_position + ;; Is the player airborne and asking to hover? If so we can just skip + ;; everything. + bit zp_state + bpl @check_thrust + lda #Joypad::BUTTON_DOWN + and Joypad::zp_buttons1 + beq @check_thrust + lda #0 + sta zp_velocity_y + rts + + @check_thrust: ;; Check if the player is asking to thrust, otherwise apply gravity. lda #(Joypad::BUTTON_UP | Joypad::BUTTON_A) and Joypad::zp_buttons1 |