Groundwork for Galarian Bird event

This adds the first half of an event where you will find the Galarian Birds. It is not finished yet.

It currently bugs out when Galarian Zapdos tries to run away and I don't know why. Frame-by-frame, it seems to be when the player has to move. I've tried different things to make this less bad, but they don't work.

Here's how it's meant to go:
1) Articuno flies away (done)
2) Zapdos barges past the player like Silver does in GSC (bugs out)
3) Moltres moves in front of the player and engages (not done)

If anyone has a better way to do this, please let me know!

Minor changes;
- Connection for Brunswick-Citrine looks nicer
- Celeste has a few changes to make the event run easier.

constants/event_constants.asm

@@ -788,6 +788,7 @@
 	const_next $880
 	const EVENT_GOT_HM03
 	const EVENT_GOT_MELTAN
+	const EVENT_BIRDS_FOUND ; hehe
 
 ; Cerulean Cave events
 	const_next $8C0

constants/hide_show_constants.asm

@@ -35,9 +35,9 @@ DEF SHOW EQU $15
 	const HS_SAFFRON_CITY_E                ; 17
 	const HS_SAFFRON_CITY_F                ; 18
 	const HS_SAFFRON_CITY_UP_GRADE         ; 19
-	const HS_ROUTE_9_ITEM                  ; 1C X
+	const HS_CELESTE_ARTICUNO_G            ; 1C was unused HS_ROUTE_9_ITEM
 	const HS_ROUTE_12_SNORLAX              ; 1D
-	const HS_ROUTE_12_ITEM_1               ; 1E X
+	const HS_CELESTE_ZAPDOS_G              ; 1E X was unused HS_ROUTE_12_ITEM_1
 	const HS_ROUTE_12_ITEM_2               ; 1F X
 	const HS_ROUTE_15_ITEM                 ; 20 X
 	const HS_ROUTE_16_SNORLAX              ; 21

data/maps/hide_show_data.asm

@@ -24,7 +24,7 @@ MapHSPointers:
 	dw NoHS
 	dw NoHS
 	dw NoHS
-	dw Route9HS
+	dw NoHS ; Route9HS made unnecessary from replacements
 	dw NoHS
 	dw NoHS
 	dw Route12HS
@@ -80,7 +80,7 @@ MapHSPointers:
 	dw NoHS
 	dw NoHS
 	dw NoHS
-	dw NoHS
+	dw CelesteHillHS
 	dw NoHS
 	dw NoHS
 	dw NoHS
@@ -298,11 +298,9 @@ SaffronCityHS:
 	;db ROUTE_2, $02, SHOW
 ;Route4HS:
 	;db ROUTE_4, $03, SHOW
-Route9HS:
-	db ROUTE_9, $0A, SHOW
 Route12HS:
 	db ROUTE_12, $01, SHOW
-	db ROUTE_12, $09, SHOW
+	;db ROUTE_12, $09, SHOW
 	db ROUTE_12, $0A, SHOW
 Route15HS:
 	db ROUTE_15, $0B, SHOW
@@ -602,6 +600,9 @@ ViridianPreGymHS:
 	db VIRIDIAN_PRE_GYM, $02, HIDE ; Yujirou Rematch
 UnderwaterTunnelHS:
 	db UNDERWATER_TUNNEL, $01, SHOW
+CelesteHillHS:
+	db CELESTE_HILL, $02, SHOW ; Zapdos
+	db CELESTE_HILL, $03, SHOW ; Articuno
 
 	db $FF, $01, SHOW ; end
 

data/maps/objects/BrunswickTrail.asm

@@ -2,7 +2,7 @@ BrunswickTrail_Object:
 	db $43 ; border block
 
 	def_warp_events
-	warp_event 24, 11, CELESTE_HILL, 1
+	warp_event 24, 11, CELESTE_HILL, 2
 
 	def_bg_events
 

data/maps/objects/CelesteHill.asm

@@ -6,7 +6,12 @@ CelesteHill_Object:
 	warp_event 13, 23, BRUNSWICK_TRAIL, 1
 
 	def_bg_events
+	bg_event 12, 20, 2
+	bg_event 12,  8, 3
 
 	def_object_events
+	object_event 12,  7, SPRITE_BIRD, STAY, DOWN, 1 ; person
+	object_event 13,  6, SPRITE_BIRD, STAY, DOWN, 1 ; person
+	object_event 11,  6, SPRITE_BIRD, STAY, DOWN, 1, MOLTRES_G, 70 | OW_POKEMON ; person
 
 	def_warps_to CELESTE_HILL

engine/overworld/auto_movement.asm

@@ -290,3 +290,8 @@ RivalIDs:
 	db OPP_RIVAL2
 	db OPP_RIVAL3
 	db -1 ; end
+
+RLEList_PlayerGZapMovement::
+	db D_DOWN, 1
+	db D_LEFT, 1
+	db -1 ; end

engine/overworld/player_animations.asm

@@ -252,7 +252,7 @@ DoFlyAnimation:
 	jr nz, DoFlyAnimation
 	ret
 
-LoadBirdSpriteGraphics:
+LoadBirdSpriteGraphics:: ; Made this farcallable for the Galarian Articuno animation.
 	ld de, BirdSprite
 	ld hl, vNPCSprites
 	lb bc, BANK(BirdSprite), 12

maps/CelesteHill.blk

@@ -1 +1 @@
-<@B>@@BB@@nU_U_oBB@@%"#$BB@@qZ

qBB@D<>rUZ%_r<5F>FB@<1D>anoa<6F>B@<1D>iU((_i<5F>B@<1D>j<EFBFBD><6A><EFBFBD><EFBFBD><EFBFBD><EFBFBD>B@<1D><><EFBFBD>s.<2E><><EFBFBD>B@B@BDEEEEFYDEEEF
+<@B>@@BB@@U_U_BB@@%"#$BB@@|}}BB@D‚rU

_„FB@ƒa%a…B@ƒiU.)_i…B@ƒj<C692><6A>€<EFBFBD>ˆ…B@†<><E280A0>s.†<>‡B@B@BDEEEEFYDEEEF

maps/CitrineCity.blk

@@ -33,4 +33,4 @@ D#####"
 
 
 
-n'meCTTTTTF-1eCxxxxxxc>>>>>>>1>>>>>>>>
+n'meCTTTTTF-'eCxxxxxxc>>>>>>>'>>>>>>>>

ram/wram.asm

@@ -412,7 +412,7 @@ wRelearnableMoves::
 ; Try not to use this stack. 
 ; A good amount of space is needed to store data for the move relearner.
 ; If it's like, 2, it'll lag like crazy and show garbage from elsewhere.
-	
+
 wLuckySlotHiddenObjectIndex:: db
 
 NEXTU
@@ -2074,7 +2074,7 @@ wMtMoonCraterCurScript:: db
 wSilphGauntlet1FCurScript:: db
 wSilphCo10FCurScript:: db
 wSilphCo11FCurScript:: db
-	ds 1
+wCelesteHillCurScript:: db
 wFuchsiaGymCurScript:: db
 wSaffronGymCurScript:: db
 wBrunswickTrailCurScript:: db

scripts/BrunswickTrail.asm

@@ -38,8 +38,8 @@ FakeTreePrompt:
 	text_end
 
 ; Ok, so here's how it is.
-; So look, I tried to make the text work more efficiently with FakeTreeEvent. 
-; But one bug literally took me back to the fucking title screen and at that point I gave up and decided to do it this hacky way.
+; I tried to make the text work more efficiently here, but nothing worked.
+; One bug literally took me back to the fucking title screen and at that point I gave up.
 ; I wanted to have some text before the CUT check. It did not work. It was terrifying.
 ; So instead I have two different versions of the same text, despite some being the same.
 ; It is inefficient, but it works. There's a lot to see in this life, and I'm not wasting it in Notepad++.

scripts/CelesteHill.asm

@@ -1,7 +1,192 @@
 CelesteHill_Script:
-	jp EnableAutoTextBoxDrawing
+	call EnableAutoTextBoxDrawing
+	ld hl, CelesteHill_ScriptPointers
+	ld a, [wCelesteHillCurScript]
+	jp CallFunctionInTable
+
+CelesteHill_ScriptPointers:
+	dw GalarianBirdScript1
+
+CelesteHillCoords1:
+	dbmapcoord 13,  8
+	db -1 ; end
+
+GalarianBirdScript1:
+;	CheckEvent EVENT_BIRDS_FOUND
+;	jr z, .cont
+;	jr nz, .done
+;.cont - This code is unfinished and bad.
+; If you have any ideas lmk :3
+	ld hl, CelesteHillCoords1
+	call ArePlayerCoordsInArray
+	jp nc, .done
+	
+	ld [wJoyIgnore], a
+	SetEvent EVENT_BIRDS_FOUND
+	ld a, $1
+	ldh [hSpriteIndexOrTextID], a
+	call DisplayTextID
+	
+	ld a, ARTICUNO_G
+	call PlayCry
+	call WaitForSoundToFinish
+	pop hl
+	ld de, BirdSprite
+	ld hl, vNPCSprites
+	lb bc, BANK(BirdSprite), $0c
+	call CopyVideoData
+	farcall LoadBirdSpriteGraphics
+	ld a, SFX_FLY
+	call PlaySound
+	ld hl, wFlyAnimUsingCoordList
+	xor a ; is using coord list
+	ld [hli], a ; wFlyAnimUsingCoordList
+	ld a, 12
+	ld [hli], a ; wFlyAnimCounter
+	ld [hl], $8 ; wFlyAnimBirdSpriteImageIndex (facing right)
+	xor a ; is using coord list
+	ld [hli], a ; wFlyAnimUsingCoordList
+	ld a, $c
+	ld [hli], a ; wFlyAnimCounter
+	ld [hl], $c ; wFlyAnimBirdSpriteImageIndex (facing right)
+	ld de, GalarianArticunoFlyScreenCoords1
+	call GalarianArticunoFlyLoop
+	ld c, 40
+	call DelayFrames
+	ld hl, wFlyAnimCounter
+	ld a, 11
+	ld [hli], a ; wFlyAnimCounter
+	ld [hl], $8 ; wFlyAnimBirdSpriteImageIndex (facing left)
+	ld de, GalarianArticunoFlyScreenCoords2
+	call GalarianArticunoFlyLoop
+	
+	ld a, HS_CELESTE_ARTICUNO_G
+	ld [wMissableObjectIndex], a
+	predef ShowObject
+	
+	ld a, ZAPDOS_G
+	call PlayCry
+	call ZapdosRunThrough
+	
+	ld a, HS_CELESTE_ZAPDOS_G
+	ld [wMissableObjectIndex], a
+	predef ShowObject
+	
+	ld a, $1
+	ldh [hSpriteIndex], a
+	call SetSpriteMovementBytesToFF
+	ld a, [wXCoord]
+	
+	jr .done
+.done
+	ret
+
+	; DoFlyAnimation clone, but for Articuno.
+GalarianArticunoFlyLoop:
+	ld a, [wFlyAnimBirdSpriteImageIndex]
+	xor $1 ; make the bird flap its wings
+	ld [wFlyAnimBirdSpriteImageIndex], a
+	ld [wSprite03StateData1ImageIndex], a
+	call Delay3
+	ld a, [wFlyAnimUsingCoordList]
+	cp $ff
+	jr z, .skipCopyingCoords ; if the bird is flapping its wings in place
+	ld hl, wSprite03StateData1YPixels
+	ld a, [de]
+	inc de
+	ld [hli], a ; y
+	inc hl
+	ld a, [de]
+	inc de
+	ld [hl], a ; x
+.skipCopyingCoords
+	ld a, [wFlyAnimCounter]
+	dec a
+	ld [wFlyAnimCounter], a
+	jr nz, GalarianArticunoFlyLoop
+	ret
+
+; Clones of the initial part of the Fly animation.
+GalarianArticunoFlyScreenCoords1:
+; y, x pairs
+	db $06, $0B ; 6, 11 $3C, $48
+	db $3C, $50
+	db $3B, $58
+	db $3A, $60
+	db $39, $68
+	db $37, $70
+	db $37, $78
+	db $33, $80
+	db $30, $88
+	db $2D, $90
+	db $2A, $98
+	db $27, $A0
+
+GalarianArticunoFlyScreenCoords2:
+	db $1A, $90
+	db $19, $80
+	db $17, $70
+	db $15, $60
+	db $12, $50
+	db $0F, $40
+	db $0C, $30
+	db $09, $20
+	db $05, $10
+	db $00, $00
+
+	db $F0, $00
+
+ZapdosRunThrough:
+	call Delay3
+	ld a, $2
+	ldh [hSpriteIndex], a
+	ld de, GalarianZapdosMovement1
+	call MoveSprite
+	
+	ld hl, wSimulatedJoypadStatesEnd
+	ld de, RLEList_PlayerGZapMovement
+	call DecodeRLEList
+	dec a
+	ld [wSimulatedJoypadStatesIndex], a
+	call StartSimulatingJoypadStates
+	ld a, $1
+	ldh [hSpriteIndex], a
+	xor a
+	ldh [hSpriteFacingDirection], a
+	call SetSpriteFacingDirectionAndDelay
+	
+	ld a, $2
+	ldh [hSpriteIndex], a
+	ld de, GalarianZapdosMovement2
+	call MoveSprite
+	ret
+
+GalarianZapdosMovement1:
+	db NPC_MOVEMENT_DOWN
+	db -1
+
+GalarianZapdosMovement2:
+	db NPC_MOVEMENT_DOWN
+	db NPC_MOVEMENT_DOWN
+	db NPC_MOVEMENT_DOWN
+	db -1
 
 CelesteHill_TextPointers:
+	dw CelesteHillGalarianBirdScreech
+	dw CelesteHillSign1
+	dw CelesteHillSign2
 
+CelesteHillGalarianBirdScreech:
+	text_far _CelesteHillGalarianBirdScreech
+	text_end
+
+CelesteHillSign1:
+	text_far _CelesteHillSign1
+	text_end
+	
+CelesteHillSign2:
+	text_far _CelesteHillSign2
+	text_end
+	
 	text_end ; unused
 	

text.asm

@@ -283,6 +283,7 @@ SECTION "Text 12", ROMX
 INCLUDE "text/CitrineRocketHouse.asm"
 INCLUDE "text/CitrineTradebackHouse.asm"
 INCLUDE "text/tradeback_move_tutor.asm"
+INCLUDE "text/CelesteHill.asm"
 INCLUDE "text/BrunswickTrail.asm"
 INCLUDE "text/SilphGauntlet1F.asm"
 INCLUDE "text/SilphGauntlet7F.asm"

text/BrunswickTrail.asm

@@ -34,7 +34,7 @@ _FakeTreeAttack::
 	prompt
 
 _GalarianZapdosBattleText::
-	text "Gyaoo!"	; making the cries consistent with the other legendary birds
+	text "Gyaoo!"
 	prompt
 
 ; Martha can do the text for her things...

text/CelesteHill.asm

@@ -0,0 +1,19 @@
+_CelesteHillGalarianBirdScreech:: ; I think others should be made a single text_7 thing but this is different as it needs a "done"
+	text "Gyaoo!"
+	done
+
+_CelesteHillSign1::
+	text "SOUTH: BRUNSWICK"
+	line "TRAIL"
+	done
+
+_CelesteHillSign2::
+	text "When the sun"
+	line "shines upon this"
+	cont "HILL, the cruel"
+	cont "pretenders to"
+	cont "the winged"
+	cont "mirages will"
+	cont "come to roost."
+	done
+