alttpr-gwaa-kiwi/alttpr-baserom
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
GKNew
alttpr-baserom/enemizer/bosses_moved.asm
codemann8 faadd1d7f1 Fixing boss behavior in Swamp Palace Arrghus' room
2025-06-05 19:50:49 -05:00

304 lines
11 KiB
NASM
Raw Permalink Blame History

;================================================================================
; Move the bosses to the right screen location depending on the room
;--------------------------------------------------------------------------------
boss_move:
{
; TODO: should probably double check that we don't need to preserve registers (A,X)...
JSL Dungeon_ResetSprites ; Restore the dungeon_resetsprites
LDA.b RoomIndex ; load room index (low byte)
LDX.b RoomIndex+1 ; (high byte)
CMP.b #7 : BNE + ; Is it Hera Tower Boss Room
CPX.b #$00 : BNE +
JSL Sprite_ResetAll ; reset sprites twice in that room for some reasons (fix bug with kholdstare)
JSL Dungeon_ResetSprites ; Restore the dungeon_resetsprites
BRL .move_to_middle
+
CMP.b #200 : BNE + ; Is it Eastern Palace Boss Room
JSL Sprite_ResetAll ; reset sprites twice in that room for some reasons (fix bug with kholdstare)
JSL Dungeon_ResetSprites ; Restore the dungeon_resetsprites
BRL .move_to_bottom_right
+
CMP.b #41 : BNE + ; Is it Skull Woods Boss Room
JSL Sprite_ResetAll ; reset sprites twice in that room for some reasons (fix bug with kholdstare)
JSL Dungeon_ResetSprites ; Restore the dungeon_resetsprites
LDA.w $0E20 : CMP.b #$92 : BNE ++ ; Is it Helmasuar King?
LDA.b #$07 : STA.w $0B00 ;Spawn the bugged moving floor sprite
STZ.w $0B28
INC.w OverlordXLow
++
BRL .move_to_bottom_right
+
CMP.b #51 : BNE + ; Is it Desert Palace Boss Room
JSL Sprite_ResetAll ; reset sprites twice in that room for some reasons (fix bug with kholdstare)
JSL Dungeon_ResetSprites ; Restore the dungeon_resetsprites
BRL .move_to_bottom_left
+
CMP.b #90 : BNE + ; Is it Palace of darkness Boss Room
JSL Sprite_ResetAll ; reset sprites twice in that room for some reasons (fix bug with kholdstare)
JSL Dungeon_ResetSprites ; Restore the dungeon_resetsprites
BRL .move_to_bottom_right
+
CMP.b #144 : BNE + ; Is it Misery Mire Boss Room
JSL Sprite_ResetAll ; reset sprites twice in that room for some reasons (fix bug with kholdstare)
JSL Dungeon_ResetSprites ; Restore the dungeon_resetsprites
BRL .move_to_bottom_left
+
CMP.b #172 : BNE + ; Is it Thieve Town Boss Room
; IF MAIDEN IS NOT RESCUED -> DO NOTHING
; IF MAIDEN IS ALREADY RESCUED -> spawn sprites normally
JSL Sprite_ResetAll ; removes sprites in thieve town boss room
JSL Dungeon_ResetSprites ; Restore the dungeon_resetsprites
;Close the door if !BLIND_DOOR_FLAG == 1
LDA.l !BLIND_DOOR_FLAG : BEQ .no_blind_door
INC.w TrapDoorFlag
STZ.w TileMapDoorPos
STZ.w DoorTimer
INC.w BossSpecialAction
; ;That must be called after the room load!
.no_blind_door
BRL .move_to_bottom_right
+
CMP.b #6 : BNE + ; Is it Swamp Palace Boss Room
CPX.b #$00 : BNE +
JSL Sprite_ResetAll ; reset sprites twice in that room for some reasons (fix bug with kholdstare)
JSL Dungeon_ResetSprites ; Restore the dungeon_resetsprites
BRL .move_to_bottom_left
+
CMP.b #222 : BNE + ; Is it Ice Palace Boss Room
JSL Sprite_ResetAll ; reset sprites twice in that room for some reasons (fix bug with kholdstare)
JSL Dungeon_ResetSprites ; Restore the dungeon_resetsprites
BRL .move_to_top_right
+
CMP.b #164 : BNE + ; Is it Turtle Rock Boss Room
JSL Sprite_ResetAll ; reset sprites twice in that room for some reasons (fix bug with kholdstare)
JSL Dungeon_ResetSprites ; Restore the dungeon_resetsprites
BRL .move_to_bottom_left
+
CMP.b #28 : BNE + ; Is it Gtower (Armos2) Boss Room
CPX.b #$00 : BNE +
JSL Sprite_ResetAll ; reset sprites twice in that room for some reasons (fix bug with kholdstare)
JSL Dungeon_ResetSprites ; Restore the dungeon_resetsprites
BRL .move_to_bottom_right
+
CMP.b #108 : BNE + ; Is it Gtower (Lanmo2) Boss Room
JSL Sprite_ResetAll ; reset sprites twice in that room for some reasons (fix bug with kholdstare)
JSL Dungeon_ResetSprites ; Restore the dungeon_resetsprites
BRL .move_to_bottom_left
+
CMP.b #77 : BNE + ; Is it Gtower (Moldorm2) Boss Room
JSL Sprite_ResetAll ; reset sprites twice in that room for some reasons (fix bug with kholdstare)
JSL Dungeon_ResetSprites ; Restore the dungeon_resetsprites
BRL .move_to_middle
+
BRL .return
; $0D00[0x10] - The lower byte of a sprite's Y - coordinate.
; $0D10[0x10] - The lower byte of a sprite's X - coordinate.
; $0D20[0x10] - The high byte of a sprite's Y - coordinate.
; $0D30[0x10] - The high byte of a sprite's X - coordinate.
; $0B08[0x08] - (Overlord) X coordinate low byte.
; $0B18[0x08] - (Overlord) Y coordinate low byte.
; $0B10[0x08] - (Overlord) X coordinate high byte.
; $0B20[0x08] - (Overlord) Y coordinate high byte.
.move_to_middle
;load all sprite of that room and overlord
LDX.b #$00
.loop_middle ; move sprites
LDA.w SpriteTypeTable, X
JSR ShouldMoveSprite : BCC .no_change
LDA.w SpritePosXLow, X : !ADD.b #$68 : STA.w SpritePosXLow, X
LDA.w SpritePosYLow, X : !ADD.b #$68 : STA.w SpritePosYLow, X
.no_change
INX : CPX.b #$10 : BNE .loop_middle
LDX.b #$00
.loop_middle2 ; move overlords
LDA.w $0B00, X
CMP.b #$E3 : BNE + ;is it moving floor?
BRA .no_change_ov
+
LDA.w OverlordXLow, X : !ADD.b #$68 : STA.w OverlordXLow, X
LDA.w OverlordYLow, X : !ADD.b #$68 : STA.w OverlordYLow, X
.no_change_ov
INX : CPX.b #$08 : BNE .loop_middle2
BRL .return
.move_to_top_right
LDX.b #$00
.loop_top_right ; move sprites
LDA.w SpriteTypeTable, X
JSR ShouldMoveSprite : BCC .no_change2
LDA.w SpritePosYHigh, X : !ADD.b #$00 : STA.w SpritePosYHigh, X
LDA.w SpritePosXHigh, X : !ADD.b #$01 : STA.w SpritePosXHigh, X
.no_change2
INX : CPX.b #$10 : BNE .loop_top_right
LDX.b #$00
.loop_top_right2 ; move overlords
LDA.w $0B00, X
CMP.b #$E3 : BNE + ;is it moving floor?
BRA .no_change_ov2
+
LDA.w OverlordXHigh, X : !ADD.b #$01 : STA.w OverlordXHigh, X
LDA.w OverlordYHigh, X : !ADD.b #$00 : STA.w OverlordYHigh, X
.no_change_ov2
INX : CPX.b #$08 : BNE .loop_top_right2
BRL .return
.move_to_bottom_right
LDX.b #$00
.loop_bottom_right ; move sprites
LDA.w SpriteTypeTable, X
JSR ShouldMoveSprite : BCC .no_change3
LDA.w SpritePosYHigh, X : !ADD.b #$01 : STA.w SpritePosYHigh, X
LDA.w SpritePosXHigh, X : !ADD.b #$01 : STA.w SpritePosXHigh, X
.no_change3
INX : CPX.b #$10 : BNE .loop_bottom_right
LDX.b #$00
.loop_bottom_right2 ; move overlords
LDA.w $0B00, X
CMP.b #$E3 : BNE + ;is it moving floor?
BRA .no_change_ov3
+
LDA.w OverlordXHigh, X : !ADD.b #$01 : STA.w OverlordXHigh, X
LDA.w OverlordYHigh, X : !ADD.b #$01 : STA.w OverlordYHigh, X
.no_change_ov3
INX : CPX.b #$08 : BNE .loop_bottom_right2
BRL .return
.move_to_bottom_left
LDX.b #$00
.loop_bottom_left ; move sprites
LDA.w SpriteTypeTable, X
JSR ShouldMoveSprite : BCC .no_change4
LDA.w SpritePosYHigh, X : !ADD.b #$01 : STA.w SpritePosYHigh, X
LDA.w SpritePosXHigh, X : !ADD.b #$00 : STA.w SpritePosXHigh, X
.no_change4
INX : CPX.b #$10 : BNE .loop_bottom_left
LDX.b #$00
.loop_bottom_left2 ; move overlords
LDA.w $0B00, X
CMP.b #$E3 : BNE + ;is it moving floor?
BRA .no_change_ov4
+
LDA.w OverlordXHigh, X : !ADD.b #$00 : STA.w OverlordXHigh, X
LDA.w OverlordYHigh, X : !ADD.b #$01 : STA.w OverlordYHigh, X
.no_change_ov4
INX : CPX.b #$08 : BNE .loop_bottom_left2
BRL .return
.return
RTL
}
; A - sprite id from E20, X
; X - sprite index - should be preserved
; sets or clears carry flag, set if sprite should be moved
ShouldMoveSprite:
PHX
LDX.b #$FF
- INX : CPX.b #$0F : BCS .done
CMP.l BossIds, X : BNE -
; match found, move it
PLX : SEC : RTS
.done ; don't move it
PLX : CLC : RTS
BossIds:
db $53, $54, $09, $92, $8c, $8d, $88, $ce
db $a2, $a3, $a4, $bd, $cb, $cc, $cd, $ff
;================================================================================
; Fix the gibdo key drop in skull woods before the boss room - USELESS CODE
;--------------------------------------------------------------------------------
;gibdo_drop_key:
; LDA.b RoomIndex : CMP.b #$39 : BNE .no_key_drop ; Check if the room id is skullwoods before boss
; LDA.w SpriteAITable, X : CMP.b #$09 : BNE .no_key_drop ; Check if the sprite is alive
; LDA.b #$01 : STA.w SpriteForceDrop, X;set key
;
;.no_key_drop
; JSL $86DC5C ;Restore draw shadow
; RTL
;--------------------------------------------------------------------------------
;================================================================================
; Set a flag to draw kholdstare shell on next NMI
;--------------------------------------------------------------------------------
new_kholdstare_code:
LDA.w SpriteForceDrop : BNE .already_iced
LDA.b #$01 : STA.w SpriteForceDrop
LDA.b #$01 : STA.l !SHELL_DMA_FLAG ; tell our NMI to draw the shell
.already_iced
; restore code
JSL Kholdstare_Draw ; sprite_kholdstare.asm (154) : JSL Kholdstare_Draw
RTL
;--------------------------------------------------------------------------------
;================================================================================
; Set a flag to draw trinexx shell on next NMI
;--------------------------------------------------------------------------------
new_trinexx_code:
LDA.w SpriteForceDrop : BNE .already_rocked
LDA.b #$01 : STA.w SpriteForceDrop
LDA.b #$02 : STA.l !SHELL_DMA_FLAG ; tell our NMI to draw the shell
.already_rocked
; restore code
LDA.b #$03 : STA.w SpriteGFXControl, X ; sprite_trinexx.asm (62) : LDA.b #$03 : STA $0DC0, X
RTL
;--------------------------------------------------------------------------------
;================================================================================
; Check if water tile in Swamp boss room, skip interaction
;--------------------------------------------------------------------------------
swamp_boss_tile_interaction:
LDA.l Sprite_ReducedTileInteractionTable, X : BEQ .return
CPX.b #$09 : BNE .return ; return if non-water tile
LDX.b IndoorsFlag : BEQ .return ; return if overworld
LDX.b RoomIndex : CPX.b #$06 : BNE .return ; return if not swamp boss room
LDA.b #$00
.return
RTL
;--------------------------------------------------------------------------------
Reference in New Issue View Git Blame Copy Permalink