diff options
| author | YamaArashi <shadow962@live.com> | 2012-01-25 05:45:33 -0800 |
|---|---|---|
| committer | YamaArashi <shadow962@live.com> | 2012-01-25 05:45:33 -0800 |
| commit | 8111b4e4ea0305fa39a9a744cfbfaa8f503144e7 (patch) | |
| tree | 37fc2983bdcfa6f97df16c4769478ab3b96135eb | |
| parent | c3f71abe64d628a33183c95919dc7b20495bf305 (diff) | |
disasm of another joypad polling function
hg-commit-id: f0306306b56f
| -rw-r--r-- | common.asm | 58 |
1 files changed, 57 insertions, 1 deletions
@@ -4765,7 +4765,63 @@ GetName: ; 376B ld [$2000],a ret -INCBIN "baserom.gbc",$37df,$3927 - $37df +INCBIN "baserom.gbc",$37df,$3831 - $37df + +; this function is used when lower button sensitivity is wanted (e.g. menus) +; OUTPUT: [$ffb5] = pressed buttons in usual format +; there are two flags that control its functionality, [$ffb6] and [$ffb7] +; there are esentially three modes of operation +; 1. Get newly pressed buttons only +; ([$ffb7] == 0, [$ffb6] == any) +; Just copies [$ffb3] to [$ffb5]. +; 2. Get currently pressed buttons at low sample rate with delay +; ([$ffb7] == 0, [$ffb6] != 0) +; If the user holds down buttons for more than half a second, +; report buttons as being pressed up to 12 times per second thereafter. +; If the user holds down buttons for less than half a second, +; report only one button press. +; 3. Same as 2, but report no buttons as pressed if A or B is held down. +; ([$ffb7] == 0, [$ffb6] == 0) +GetJoypadStateLowSensitivity: ; 3831 + call GetJoypadState + ld a,[$ffb7] ; flag + and a ; get all currently pressed buttons or only newly pressed buttons? + ld a,[$ffb3] ; newly pressed buttons + jr z,.storeButtonState\@ + ld a,[$ffb4] ; all currently pressed buttons +.storeButtonState\@ + ld [$ffb5],a + ld a,[$ffb3] ; newly pressed buttons + and a ; have any buttons been newly pressed since last check? + jr z,.noNewlyPressedButtons\@ +.newlyPressedButtons\@ + ld a,30 ; half a second delay + ld [$ffd5],a ; frame counter + ret +.noNewlyPressedButtons\@ + ld a,[$ffd5] ; frame counter + and a ; is the delay over? + jr z,.delayOver\@ +.delayNotOver\@ + xor a + ld [$ffb5],a ; report no buttons as pressed + ret +.delayOver\@ +; if [$ffb6] = 0 and A or B is pressed, report no buttons as pressed + ld a,[$ffb4] + and a,%00000011 ; A and B buttons + jr z,.setShortDelay\@ + ld a,[$ffb6] ; flag + and a + jr nz,.setShortDelay\@ + xor a + ld [$ffb5],a +.setShortDelay\@ + ld a,5 ; 1/12 of a second delay + ld [$ffd5],a ; frame counter + ret + +INCBIN "baserom.gbc",$3865,$3927 - $3865 AddPokemonToParty: ; 0x3927 push hl |