Use macros to enforce "hidden object" constraints, and rename them to "hidden events" (#559)

1 files changed, 224 insertions, 0 deletions

diff --git a/engine/events/hidden_events/school_blackboard.asm b/engine/events/hidden_events/school_blackboard.asm
new file mode 100644
index 00000000..71e24ed0
--- /dev/null
+++ b/engine/events/hidden_events/school_blackboard.asm
@@ -0,0 +1,224 @@
+PrintBlackboardLinkCableText:
+	call EnableAutoTextBoxDrawing
+	ld a, $1
+	ld [wDoNotWaitForButtonPressAfterDisplayingText], a
+	ld a, [wHiddenEventFunctionArgument]
+	call PrintPredefTextID
+	ret
+
+LinkCableHelp::
+	text_asm
+	call SaveScreenTilesToBuffer1
+	ld hl, LinkCableHelpText1
+	call PrintText
+	xor a
+	ld [wMenuItemOffset], a ; not used
+	ld [wCurrentMenuItem], a
+	ld [wLastMenuItem], a
+	ld a, PAD_A | PAD_B
+	ld [wMenuWatchedKeys], a
+	ld a, 3
+	ld [wMaxMenuItem], a
+	ld a, 2
+	ld [wTopMenuItemY], a
+	ld a, 1
+	ld [wTopMenuItemX], a
+.linkHelpLoop
+	ld hl, wStatusFlags5
+	set BIT_NO_TEXT_DELAY, [hl]
+	hlcoord 0, 0
+	ld b, 8
+	ld c, 13
+	call TextBoxBorder
+	hlcoord 2, 2
+	ld de, HowToLinkText
+	call PlaceString
+	ld hl, LinkCableHelpText2
+	call PrintText
+	call HandleMenuInput
+	bit B_PAD_B, a
+	jr nz, .exit
+	ld a, [wCurrentMenuItem]
+	cp 3 ; pressed a on "STOP READING"
+	jr z, .exit
+	ld hl, wStatusFlags5
+	res BIT_NO_TEXT_DELAY, [hl]
+	ld hl, LinkCableInfoTexts
+	add a
+	ld d, 0
+	ld e, a
+	add hl, de
+	ld a, [hli]
+	ld h, [hl]
+	ld l, a
+	call PrintText
+	jp .linkHelpLoop
+.exit
+	ld hl, wStatusFlags5
+	res BIT_NO_TEXT_DELAY, [hl]
+	call LoadScreenTilesFromBuffer1
+	jp TextScriptEnd
+
+LinkCableHelpText1:
+	text_far _LinkCableHelpText1
+	text_end
+
+LinkCableHelpText2:
+	text_far _LinkCableHelpText2
+	text_end
+
+HowToLinkText:
+	db   "HOW TO LINK"
+	next "COLOSSEUM"
+	next "TRADE CENTER"
+	next "STOP READING@"
+
+LinkCableInfoTexts:
+	dw LinkCableInfoText1
+	dw LinkCableInfoText2
+	dw LinkCableInfoText3
+
+LinkCableInfoText1:
+	text_far _LinkCableInfoText1
+	text_end
+
+LinkCableInfoText2:
+	text_far _LinkCableInfoText2
+	text_end
+
+LinkCableInfoText3:
+	text_far _LinkCableInfoText3
+	text_end
+
+ViridianSchoolBlackboard::
+	text_asm
+	call SaveScreenTilesToBuffer1
+	ld hl, ViridianSchoolBlackboardText1
+	call PrintText
+	xor a
+	ld [wMenuItemOffset], a
+	ld [wCurrentMenuItem], a
+	ld [wLastMenuItem], a
+	ld a, PAD_LEFT | PAD_RIGHT | PAD_A | PAD_B
+	ld [wMenuWatchedKeys], a
+	ld a, 2
+	ld [wMaxMenuItem], a
+	ld a, 2
+	ld [wTopMenuItemY], a
+	ld a, 1
+	ld [wTopMenuItemX], a
+.blackboardLoop
+	ld hl, wStatusFlags5
+	set BIT_NO_TEXT_DELAY, [hl]
+	hlcoord 0, 0
+	lb bc, 6, 10
+	call TextBoxBorder
+	hlcoord 1, 2
+	ld de, StatusAilmentText1
+	call PlaceString
+	hlcoord 6, 2
+	ld de, StatusAilmentText2
+	call PlaceString
+	ld hl, ViridianSchoolBlackboardText2
+	call PrintText
+	call HandleMenuInput ; pressing up and down is handled in here
+	bit B_PAD_B, a ; pressed b
+	jr nz, .exitBlackboard
+	bit B_PAD_RIGHT, a
+	jr z, .didNotPressRight
+	; move cursor to right column
+	ld a, 2
+	ld [wMaxMenuItem], a
+	ld a, 2
+	ld [wTopMenuItemY], a
+	ld a, 6
+	ld [wTopMenuItemX], a
+	ld a, 3 ; in the the right column, use an offset to prevent overlap
+	ld [wMenuItemOffset], a
+	jr .blackboardLoop
+.didNotPressRight
+	bit B_PAD_LEFT, a
+	jr z, .didNotPressLeftOrRight
+	; move cursor to left column
+	ld a, 2
+	ld [wMaxMenuItem], a
+	ld a, 2
+	ld [wTopMenuItemY], a
+	ld a, 1
+	ld [wTopMenuItemX], a
+	xor a
+	ld [wMenuItemOffset], a
+	jr .blackboardLoop
+.didNotPressLeftOrRight
+	ld a, [wCurrentMenuItem]
+	ld b, a
+	ld a, [wMenuItemOffset]
+	add b
+	cp 5 ; cursor is pointing to "QUIT"
+	jr z, .exitBlackboard
+	; we must have pressed a on a status condition
+	; so print the text
+	ld hl, wStatusFlags5
+	res BIT_NO_TEXT_DELAY, [hl]
+	ld hl, ViridianBlackboardStatusPointers
+	add a
+	ld d, 0
+	ld e, a
+	add hl, de
+	ld a, [hli]
+	ld h, [hl]
+	ld l, a
+	call PrintText
+	jp .blackboardLoop
+.exitBlackboard
+	ld hl, wStatusFlags5
+	res BIT_NO_TEXT_DELAY, [hl]
+	call LoadScreenTilesFromBuffer1
+	jp TextScriptEnd
+
+ViridianSchoolBlackboardText1:
+	text_far _ViridianSchoolBlackboardText1
+	text_end
+
+ViridianSchoolBlackboardText2:
+	text_far _ViridianSchoolBlackboardText2
+	text_end
+
+StatusAilmentText1:
+	db   " SLP"
+	next " PSN"
+	next " PAR@"
+
+StatusAilmentText2:
+	db   " BRN"
+	next " FRZ"
+	next " QUIT@"
+
+	db "@" ; unused
+
+ViridianBlackboardStatusPointers:
+	dw ViridianBlackboardSleepText
+	dw ViridianBlackboardPoisonText
+	dw ViridianBlackboardPrlzText
+	dw ViridianBlackboardBurnText
+	dw ViridianBlackboardFrozenText
+
+ViridianBlackboardSleepText:
+	text_far _ViridianBlackboardSleepText
+	text_end
+
+ViridianBlackboardPoisonText:
+	text_far _ViridianBlackboardPoisonText
+	text_end
+
+ViridianBlackboardPrlzText:
+	text_far _ViridianBlackboardPrlzText
+	text_end
+
+ViridianBlackboardBurnText:
+	text_far _ViridianBlackboardBurnText
+	text_end
+
+ViridianBlackboardFrozenText:
+	text_far _ViridianBlackboardFrozenText
+	text_end