diff options
Diffstat (limited to 'macros/event_macros.asm')
| -rwxr-xr-x | macros/event_macros.asm | 441 |
1 files changed, 441 insertions, 0 deletions
diff --git a/macros/event_macros.asm b/macros/event_macros.asm new file mode 100755 index 00000000..20027209 --- /dev/null +++ b/macros/event_macros.asm @@ -0,0 +1,441 @@ +;\1 = event index +;\2 = return result in carry instead of zero flag +CheckEvent: MACRO +event_byte = ((\1) / 8) + ld a, [wEventFlags + event_byte] + + IF _NARG > 1 + IF ((\1) % 8) == 7 + add a + ELSE + REPT ((\1) % 8) + 1 + rrca + ENDR + ENDC + ELSE + bit (\1) % 8, a + ENDC + ENDM + +;\1 = event index +CheckEventReuseA: MACRO + IF event_byte != ((\1) / 8) +event_byte = ((\1) / 8) + ld a, [wEventFlags + event_byte] + ENDC + + bit (\1) % 8, a + ENDM + +;\1 = event index +;\2 = event index of the last event used before the branch +CheckEventAfterBranchReuseA: MACRO +event_byte = ((\2) / 8) + IF event_byte != ((\1) / 8) +event_byte = ((\1) / 8) + ld a, [wEventFlags + event_byte] + ENDC + + bit (\1) % 8, a + ENDM + +;\1 = reg +;\2 = event index +;\3 = event index this event is relative to (optional, this is needed when there is a fixed flag address) +EventFlagBit: MACRO + IF _NARG > 2 + ld \1, ((\3) % 8) + ((\2) - (\3)) + ELSE + ld \1, (\2) % 8 + ENDC + ENDM + +;\1 = reg +;\2 = event index +EventFlagAddress: MACRO +event_byte = ((\2) / 8) + ld \1, wEventFlags + event_byte + ENDM + +;\1 = event index +CheckEventHL: MACRO +event_byte = ((\1) / 8) + ld hl, wEventFlags + event_byte + bit (\1) % 8, [hl] + ENDM + +;\1 = event index +CheckEventReuseHL: MACRO +IF event_byte != ((\1) / 8) +event_byte = ((\1) / 8) + ld hl, wEventFlags + event_byte + ENDC + + bit (\1) % 8, [hl] + ENDM + +; dangerous, only use when HL is guaranteed to be the desired value +;\1 = event index +CheckEventForceReuseHL: MACRO +event_byte = ((\1) / 8) + bit (\1) % 8, [hl] + ENDM + +;\1 = event index +;\2 = event index of the last event used before the branch +CheckEventAfterBranchReuseHL: MACRO +event_byte = ((\2) / 8) +IF event_byte != ((\1) / 8) +event_byte = ((\1) / 8) + ld hl, wEventFlags + event_byte + ENDC + + bit (\1) % 8, [hl] + ENDM + +;\1 = event index +CheckAndSetEvent: MACRO +event_byte = ((\1) / 8) + ld hl, wEventFlags + event_byte + bit (\1) % 8, [hl] + set (\1) % 8, [hl] + ENDM + +;\1 = event index +CheckAndResetEvent: MACRO +event_byte = ((\1) / 8) + ld hl, wEventFlags + event_byte + bit (\1) % 8, [hl] + res (\1) % 8, [hl] + ENDM + +;\1 = event index +CheckAndSetEventA: MACRO + ld a, [wEventFlags + ((\1) / 8)] + bit (\1) % 8, a + set (\1) % 8, a + ld [wEventFlags + ((\1) / 8)], a + ENDM + +;\1 = event index +CheckAndResetEventA: MACRO + ld a, [wEventFlags + ((\1) / 8)] + bit (\1) % 8, a + res (\1) % 8, a + ld [wEventFlags + ((\1) / 8)], a + ENDM + +;\1 = event index +SetEvent: MACRO +event_byte = ((\1) / 8) + ld hl, wEventFlags + event_byte + set (\1) % 8, [hl] + ENDM + +;\1 = event index +SetEventReuseHL: MACRO + IF event_byte != ((\1) / 8) +event_byte = ((\1) / 8) + ld hl, wEventFlags + event_byte + ENDC + + set (\1) % 8, [hl] + ENDM + +;\1 = event index +;\2 = event index of the last event used before the branch +SetEventAfterBranchReuseHL: MACRO +event_byte = ((\2) / 8) +IF event_byte != ((\1) / 8) +event_byte = ((\1) / 8) + ld hl, wEventFlags + event_byte + ENDC + + set (\1) % 8, [hl] + ENDM + +; dangerous, only use when HL is guaranteed to be the desired value +;\1 = event index +SetEventForceReuseHL: MACRO +event_byte = ((\1) / 8) + set (\1) % 8, [hl] + ENDM + +;\1 = event index +;\2 = event index +;\3, \4, ... = additional (optional) event indices +SetEvents: MACRO + SetEvent \1 + rept (_NARG + -1) + SetEventReuseHL \2 + shift + endr + ENDM + +;\1 = event index +ResetEvent: MACRO +event_byte = ((\1) / 8) + ld hl, wEventFlags + event_byte + res (\1) % 8, [hl] + ENDM + +;\1 = event index +ResetEventReuseHL: MACRO + IF event_byte != ((\1) / 8) +event_byte = ((\1) / 8) + ld hl, wEventFlags + event_byte + ENDC + + res (\1) % 8, [hl] + ENDM + +;\1 = event index +;\2 = event index of the last event used before the branch +ResetEventAfterBranchReuseHL: MACRO +event_byte = ((\2) / 8) +IF event_byte != ((\1) / 8) +event_byte = ((\1) / 8) + ld hl, wEventFlags + event_byte + ENDC + + res (\1) % 8, [hl] + ENDM + +; dangerous, only use when HL is guaranteed to be the desired value +;\1 = event index +ResetEventForceReuseHL: MACRO +event_byte = ((\1) / 8) + res (\1) % 8, [hl] + ENDM + +;\1 = event index +;\2 = event index +;\3 = event index (optional) +ResetEvents: MACRO + ResetEvent \1 + rept (_NARG + -1) + ResetEventReuseHL \2 + shift + endr + ENDM + +;\1 = event index +;\2 = number of bytes away from the base address (optional, for matching the ROM) +dbEventFlagBit: MACRO + IF _NARG > 1 + db ((\1) % 8) + ((\2) * 8) + ELSE + db ((\1) % 8) + ENDC + ENDM + +;\1 = event index +;\2 = number of bytes away from the base address (optional, for matching the ROM) +dwEventFlagAddress: MACRO + IF _NARG > 1 + dw wEventFlags + ((\1) / 8) - (\2) + ELSE + dw wEventFlags + ((\1) / 8) + ENDC + ENDM + +;\1 = start +;\2 = end +SetEventRange: MACRO +event_start_byte = ((\1) / 8) +event_end_byte = ((\2) / 8) + + IF event_end_byte < event_start_byte + FAIL "Incorrect argument order in SetEventRange." + ENDC + + IF event_start_byte == event_end_byte + ld a, [wEventFlags + event_start_byte] + or (1 << (((\2) % 8) + 1)) - (1 << ((\1) % 8)) + ld [wEventFlags + event_start_byte], a + ELSE +event_fill_start = event_start_byte + 1 +event_fill_count = event_end_byte - event_start_byte - 1 + + IF ((\1) % 8) == 0 +event_fill_start = event_fill_start + -1 +event_fill_count = event_fill_count + 1 + ELSE + ld a, [wEventFlags + event_start_byte] + or $ff - ((1 << ((\1) % 8)) - 1) + ld [wEventFlags + event_start_byte], a + ENDC + + IF ((\2) % 8) == 7 +event_fill_count = event_fill_count + 1 + ENDC + + IF event_fill_count == 1 + ld hl, wEventFlags + event_fill_start + ld [hl], $ff + ENDC + + IF event_fill_count > 1 + ld a, $ff + ld hl, wEventFlags + event_fill_start + + REPT event_fill_count + -1 + ld [hli], a + ENDR + + ld [hl], a + ENDC + + IF ((\2) % 8) == 0 + ld hl, wEventFlags + event_end_byte + set 0, [hl] + ELSE + IF ((\2) % 8) != 7 + ld a, [wEventFlags + event_end_byte] + or (1 << (((\2) % 8) + 1)) - 1 + ld [wEventFlags + event_end_byte], a + ENDC + ENDC + ENDC + ENDM + +;\1 = start +;\2 = end +;\3 = assume a is 0 if present +ResetEventRange: MACRO +event_start_byte = ((\1) / 8) +event_end_byte = ((\2) / 8) + + IF event_end_byte < event_start_byte + FAIL "Incorrect argument order in ResetEventRange." + ENDC + + IF event_start_byte == event_end_byte + ld a, [wEventFlags + event_start_byte] + and ~((1 << (((\2) % 8) + 1)) - (1 << ((\1) % 8))) & $ff + ld [wEventFlags + event_start_byte], a + ELSE +event_fill_start = event_start_byte + 1 +event_fill_count = event_end_byte - event_start_byte - 1 + + IF ((\1) % 8) == 0 +event_fill_start = event_fill_start + -1 +event_fill_count = event_fill_count + 1 + ELSE + ld a, [wEventFlags + event_start_byte] + and ~($ff - ((1 << ((\1) % 8)) - 1)) & $ff + ld [wEventFlags + event_start_byte], a + ENDC + + IF ((\2) % 8) == 7 +event_fill_count = event_fill_count + 1 + ENDC + + IF event_fill_count == 1 + ld hl, wEventFlags + event_fill_start + ld [hl], 0 + ENDC + + IF event_fill_count > 1 + ld hl, wEventFlags + event_fill_start + + ; force xor a if we just to wrote to it above + IF (_NARG < 3) || (((\1) % 8) != 0) + xor a + ENDC + + REPT event_fill_count + -1 + ld [hli], a + ENDR + + ld [hl], a + ENDC + + IF ((\2) % 8) == 0 + ld hl, wEventFlags + event_end_byte + res 0, [hl] + ELSE + IF ((\2) % 8) != 7 + ld a, [wEventFlags + event_end_byte] + and ~((1 << (((\2) % 8) + 1)) - 1) & $ff + ld [wEventFlags + event_end_byte], a + ENDC + ENDC + ENDC + ENDM + +; returns whether both events are set in Z flag +; This is counter-intuitive because the other event checks set the Z flag when +; the event is not set, but this sets the Z flag when the event is set. +;\1 = event index 1 +;\2 = event index 2 +;\3 = try to reuse a (optional) +CheckBothEventsSet: MACRO + IF ((\1) / 8) == ((\2) / 8) + IF (_NARG < 3) || (((\1) / 8) != event_byte) +event_byte = ((\1) / 8) + ld a, [wEventFlags + ((\1) / 8)] + ENDC + and (1 << ((\1) % 8)) | (1 << ((\2) % 8)) + cp (1 << ((\1) % 8)) | (1 << ((\2) % 8)) + ELSE + ; This case doesn't happen in the original ROM. + IF ((\1) % 8) == ((\2) % 8) + push hl + ld a, [wEventFlags + ((\1) / 8)] + ld hl, wEventFlags + ((\2) / 8) + and [hl] + cpl + bit ((\1) % 8), a + pop hl + ELSE + push bc + ld a, [wEventFlags + ((\1) / 8)] + and (1 << ((\1) % 8)) + ld b, a + ld a, [wEventFlags + ((\2) / 8)] + and (1 << ((\2) % 8)) + or b + cp (1 << ((\1) % 8)) | (1 << ((\2) % 8)) + pop bc + ENDC + ENDC + ENDM + +; returns the complement of whether either event is set in Z flag +;\1 = event index 1 +;\2 = event index 2 +CheckEitherEventSet: MACRO + IF ((\1) / 8) == ((\2) / 8) + ld a, [wEventFlags + ((\1) / 8)] + and (1 << ((\1) % 8)) | (1 << ((\2) % 8)) + ELSE + ; This case doesn't happen in the original ROM. + IF ((\1) % 8) == ((\2) % 8) + push hl + ld a, [wEventFlags + ((\1) / 8)] + ld hl, wEventFlags + ((\2) / 8) + or [hl] + bit ((\1) % 8), a + pop hl + ELSE + push bc + ld a, [wEventFlags + ((\1) / 8)] + and (1 << ((\1) % 8)) + ld b, a + ld a, [wEventFlags + ((\2) / 8)] + and (1 << ((\2) % 8)) + or b + pop bc + ENDC + ENDC + ENDM + +; for handling fixed event bits when events are inserted/removed +;\1 = event index +;\2 = fixed flag bit +AdjustEventBit: MACRO + IF ((\1) % 8) != (\2) + add ((\1) % 8) - (\2) + ENDC + ENDM |