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Added the multi cart per room setup

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This commit is contained in:
Jared_Brian_
2025-01-21 22:44:26 -07:00
parent 002b8b7f33
commit 46e557e82e
3 changed files with 313 additions and 130 deletions
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1
.gitignore vendored
View File

@@ -21,3 +21,4 @@ oos165x.sfc
oos165x.smp.sym
oos165x.srm
buildJ.bat
oos165x.cht

16
Sprites/NPCs/followers.asm
View File

@@ -784,10 +784,10 @@ MinecartFollower_TransitionToSprite:
JSL Sprite_SpawnDynamically
TYX
JSL Sprite_SetSpawnedCoords
LDA.w !MinecartDirection : CMP.b #$00 : BEQ .vert_adjust
LDA.w !MinecartDirection, X : CMP.b #$00 : BEQ .vert_adjust
CMP.b #$02 : BEQ .vert_adjust
LDA.w POSY : CLC : ADC #$08 : STA.w SprY, X
LDA.w POSX : STA.w SprX, X
LDA.w POSX : STA.w SprX, X
JMP .finish_prep
.vert_adjust
LDA.w POSY : STA.w SprY, X
@@ -795,9 +795,11 @@ MinecartFollower_TransitionToSprite:
.finish_prep
LDA.w POSYH : STA.w SprYH, X
LDA.w POSXH : STA.w SprXH, X
LDA.w !MinecartDirection
CLC : ADC.b #$04
STA.w SprSubtype, X
LDA.w !MinecartDirection, X
CLC : ADC.b #$04 : STA.w SprMiscB, X
; Tell the newly spawned cart which track it is on.
LDA.w !MinecartTrackCache : STA.w SprSubtype, X
LDA Minecart_AnimDirection, X : STA $0D90, X
JSL Sprite_Minecart_Prep
@@ -810,7 +812,7 @@ DrawMinecartFollower:
{
JSL $099EFC ; Follower_Initialize
LDX !MinecartDirection
LDA.w !MinecartDirection, X : TAX
LDA Minecart_AnimDirection, X : STA $02CF
JSR FollowerDraw_CachePosition
@@ -951,7 +953,7 @@ LinkState_Minecart:
STZ.b $48
; Move Link based on the direction of the cart
LDA.w !MinecartDirection : BNE .not_north
LDA.w !MinecartDirection, X : BNE .not_north
LDY.b #$00
LDA.w .drag_y_low, Y : CLC : ADC.w $0B7E : STA.w $0B7E
LDA.w .drag_y_high, Y : ADC.w $0B7F : STA.w $0B7F

426
Sprites/Objects/minecart.asm
View File

@@ -7,7 +7,7 @@
;
; The cart begins in an inactive state, horizontal or vertical
; and is activated by the player when they stand on the hitbox
; and press the B button. Based on the subtype of the cart,
; and press the B button. Based on the SprMiscB of the cart,
; it will move in that direction until it encounters one of the
; following scenarions:
;
@@ -62,7 +62,7 @@
!MinecartSpeed = 20
!DoubleSpeed = 30
; SprSubtype and Minecart movement direction
; SprMiscB and Minecart movement direction
; nesw
; 0 - north
; 1 - east
@@ -72,7 +72,7 @@ North = $00
East = $01
South = $02
West = $03
!MinecartDirection = $012B
!MinecartDirection = $0DE0 ; = SprMiscC
; Sprite Facing Direction
; udlr
@@ -86,6 +86,34 @@ Left = $02
Right = $03
!SpriteDirection = $0DE0
; A "track" is one minecart that can exist in multiple different places.
; Allowing the player to leave a minecart in one room and then still find
; it in the same place upon returning to that room.
; There is a total possibility of 0x20 different subtypes that can be set.
; Therefore there can be a total of 0x20 different tracks.
; This value is used to keep track of which room the minecart was left
; in. Currently #$00 is reserved to keep track of new tracks that have
; not been used yet so tracks will not work when stopped in room 00. Up
; to $0768 used which is all free ram.
!MinecartTrackRoom = $0728
; Track X position. This is used to keep track of the possibility of
; there being more than one stop per track in the same room. Up to $07A8
; used which is all free ram.
!MinecartTrackX = $0768
; Track X position. This is used to keep track of the possibility of
; there being more than one stop per track in the same room. Up to $07E8
; used which is all free ram.
!MinecartTrackY = $07A8
; This is used to keep track of which track we are on while riding
; the cart. We can only use one cart at a time so this is only 1 byte.
!MinecartTrackCache = $07E8
; =========================================================
Sprite_Minecart_Long:
@@ -101,131 +129,157 @@ Sprite_Minecart_Long:
}
; =========================================================
; The subtype of the minecart determines the direction it
; will move in, so if the subtype is 0 the cart will move
; The SprMiscB of the minecart determines the direction it
; will move in, so if the SprMiscB is 0 the cart will move
; north and start in WaitVert mode.
Sprite_Minecart_Prep:
{
PHB : PHK : PLB
print "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa: ", pc
JSR UpdateCachedCoords
LDA.w SprSubtype, X : ASL : TAY
; If Link is in a cart AND he is on the same track as this cart's
; track, kill the cart.
CMP.w !MinecartTrackCache : BNE .notSameTrack
LDA.b !LinkInCart : BEQ .notInCart
BRA .killMinecart
.notInCart
.notSameTrack
REP #$20
; Check if the track has already been initialized. If not we need to
; tell the game where the cart on the track starts
LDA.w !MinecartTrackRoom, Y : BNE .trackAlreadySetUp
LDA.w .TrackStartingX, Y : STA.w !MinecartTrackX, Y
LDA.w .TrackStartingY, Y : STA.w !MinecartTrackY, Y
LDA.w .TrackStartingRooms, Y : STA.w !MinecartTrackRoom, Y
.trackAlreadySetUp
; Check if we are currently in the room where the track was left.
CMP.b $A0 : BEQ .inRoom
.killMinecart
SEP #$20
STZ.w SprState, X
PLB
RTL
.inRoom
; Check if the coordinates match, if not kill the sprite.
LDA.w !MinecartTrackX, Y : CMP.w SprCachedX : BNE .killMinecart
LDA.w !MinecartTrackY, Y : CMP.w SprCachedY : BNE .killMinecart
SEP #$20
STZ.w SprMiscF, X ; Clear the auto-move flag
STZ.w SprMiscG, X ; Clear the active tossing flag
; If the subtype is > 4, then it's an active cart
LDA.w SprSubtype, X : CMP.b #$04 : BCC +
LDA.w SprSubtype, X : SEC : SBC.b #$04 : STA.w SprSubtype, X
LDA.b #$01 : STA.w SprMiscF, X ; Set the auto-move flag
+
LDA.b #$04 : STA.w SprNbrOAM, X ; Nbr Oam Entries
LDA.b #$40 : STA.w SprGfxProps, X ; Impervious props
LDA.b #$E0 : STA.w SprHitbox, X ; Persist outside camera
STZ.w SprDefl, X ; Sprite persist in dungeon
STZ.w SprBump, X ; No bump damage
STZ.w SprTileDie, X ; Set interactive hitbox
STZ.w !MinecartDirection
STZ.w !MinecartDirection, X
STZ.w !SpriteDirection, X
LDA.w SprSubtype, X : CMP.b #$00 : BEQ .north
CMP.b #$01 : BEQ .east
CMP.b #$02 : BEQ .south
CMP.b #$03 : BEQ .west
; If the SprMiscB is > 4, then it's an active cart. This should only
; be the case when transitioning from a follower.
LDA.w SprMiscB, X : CMP.b #$04 : BCC .notActive
LDA.w SprMiscB, X : SEC : SBC.b #$04 : STA.w SprMiscB, X
LDA.b #$01 : STA.w SprMiscF, X ; Set the auto-move flag
BRA .active
.notActive
; Setup Minecart position to look for tile IDs
; We use AND #$F8 to clamp to a 8x8 grid.
LDA.w SprY, X : AND #$F8 : STA.b $00
LDA.w SprYH, X : STA.b $01
LDA.w SprX, X : AND #$F8 : STA.b $02
LDA.w SprXH, X : STA.b $03
; Fetch tile attributes based on current coordinates
LDA.b #$00 : JSL Sprite_GetTileAttr
; Set our starting direction based on the stop tile we are on.
; This means minecarts should always be placed on top of a stop tile.
LDA.w SPRTILE
CMP.b #$B7 : BEQ .goSouth
CMP.b #$B8 : BEQ .goNorth
CMP.b #$B9 : BEQ .goEast
CMP.b #$BA : BEQ .goWest
.goNorth
LDA.b #North : STA.w SprMiscB, X
JMP .done2
.goEast
LDA.b #East : STA.w SprMiscB, X
JMP .done2
.goSouth
LDA.b #South : STA.w SprMiscB, X
JMP .done2
.goWest
LDA.b #West : STA.w SprMiscB, X
.done2
.active
LDA.w SprMiscB, X : CMP.b #$00 : BEQ .north
CMP.b #$01 : BEQ .east
CMP.b #$02 : BEQ .south
CMP.b #$03 : BEQ .west
.north
; Both !MinecartDirection and !SpriteDirection set to 0 earlier.
%GotoAction(1) ; Minecart_WaitVert
JMP .done
JMP .done
.east
LDA.b #East : STA !MinecartDirection
LDA.b #East : STA !MinecartDirection, X
LDA.b #Right : STA !SpriteDirection, X
%GotoAction(0) ; Minecart_WaitHoriz
JMP .done
.south
LDA.b #South : STA !MinecartDirection
LDA.b #Down : STA !SpriteDirection, X
LDA.b #South : STA !MinecartDirection, X
LDA.b #Down : STA !SpriteDirection, X
%GotoAction(1) ; Minecart_WaitVert
JMP .done
.west
LDA.b #West : STA !MinecartDirection
LDA.b #West : STA !MinecartDirection, X
LDA.b #Left : STA !SpriteDirection, X
%GotoAction(0) ; Minecart_WaitHoriz
.done
PLB
RTL
}
; =========================================================
; Handle the tossing of the cart
; Changes the subtype of the cart to indicate the direction
; the cart is facing and sets the velocity of the cart
; based on the direction it is facing.
; This is which room each track should start in if it hasn't already
; been given a track.
.TrackStartingRooms
dw $0089, $0089, $0089, $0089, $0089, $0089, $0089, $0089
dw $0089, $0089, $0089, $0089, $0089, $0089, $0089, $0089
dw $0089, $0089, $0089, $0089, $0089, $0089, $0089, $0089
dw $0089, $0089, $0089, $0089, $0089, $0089, $0089, $0089
Minecart_HandleToss:
{
LDA.b #$30 : STA.w SprTimerA, X
; Check links facing direction $2F and apply velocity
LDA $2F : CMP.b #$00 : BEQ .toss_north
CMP.b #$02 : BEQ .toss_south
CMP.b #$04 : BEQ .toss_east
CMP.b #$06 : BEQ .toss_west
.toss_north
LDA.b #-!DoubleSpeed : STA.w SprYSpeed, X
LDA #$00 : STA.w SprSubtype, X : STA !SpriteDirection, X
%GotoAction(1) ; Minecart_WaitVert
JMP .continue
.toss_south
LDA.b #!DoubleSpeed : STA.w SprYSpeed, X
LDA #$02 : STA.w SprSubtype, X
LDA #$01 : STA !SpriteDirection, X
%GotoAction(1) ; Minecart_WaitVert
JMP .continue
.toss_east
LDA.b #-!DoubleSpeed : STA.w SprXSpeed, X
LDA #$01 : STA.w SprSubtype, X
LDA #$03 : STA !SpriteDirection, X
%GotoAction(0) ; Minecart_WaitHoriz
JMP .continue
.toss_west
LDA.b #!DoubleSpeed : STA.w SprXSpeed, X
LDA #$03 : STA.w SprSubtype, X
LDA #$02 : STA !SpriteDirection, X
%GotoAction(0) ; Minecart_WaitHoriz
.continue
LDA #$01 : STA.w SprMiscG, X
LDA #$12 : STA.w SprTimerC, X
STA.w SprYRound, X : STA.w SprXRound, X
RTS
}
; This is where within the room each track should start in if it hasn't
; already been given a position. This is necessary to allow for more
; than one stopping point to be in one room.
.TrackStartingX
dw $1320, $12D0, $1300, $1300, $1300, $1300, $1300, $1300
dw $1300, $1300, $1300, $1300, $1300, $1300, $1300, $1300
dw $1300, $1300, $1300, $1300, $1300, $1300, $1300, $1300
dw $1300, $1300, $1300, $1300, $1300, $1300, $1300, $1300
Minecart_HandleTossedCart:
{
LDA.w SprMiscG, X : BEQ .not_tossed
LDA.w SprHeight, X : BEQ .low_enough
DEC.w SprHeight, X
RTS
.low_enough
.TrackStartingY
dw $11C0, $1120, $1100, $1100, $1100, $1100, $1100, $1100
dw $1100, $1100, $1100, $1100, $1100, $1100, $1100, $1100
dw $1100, $1100, $1100, $1100, $1100, $1100, $1100, $1100
dw $1100, $1100, $1100, $1100, $1100, $1100, $1100, $1100
LDA.w SprTimerC, X : BNE .not_tossed
LDA.w SprX, X : AND.b #$F8 : STA.w SprX, X
LDA.w SprY, X : AND.b #$F8 : STA.w SprY, X
STZ.w SprMiscG, X
STZ.w SprYSpeed, X
STZ.w SprXSpeed, X
STZ.w SprHeight, X
.not_tossed
RTS
}
Minecart_HandleLiftAndToss:
{
JSR CheckIfPlayerIsOn : BCC .not_tossing
LDA.w LinkCarryOrToss : CMP.b #$02 : BNE .not_tossing
JSR Minecart_HandleToss
.not_tossing
JSL Sprite_CheckIfLifted
JSL Sprite_Move
JSR Minecart_HandleTossedCart
JSL ThrownSprite_TileAndSpriteInteraction_long
RTS
; NOTE TO SCAWFUL: All of these values will need to be set when you
; place the carts within ZS. I set them all to spawn in the middle of
; room 0x89 just for testing purposes.
}
; =========================================================
@@ -248,6 +302,7 @@ Sprite_Minecart_Main:
Minecart_WaitHoriz:
{
%PlayAnimation(0,1,8)
LDA.w LinkCarryOrToss : AND #$03 : BNE .lifting
LDA.w SprTimerA, X : BNE .not_ready
JSR CheckIfPlayerIsOn : BCC .not_ready
@@ -257,14 +312,17 @@ Sprite_Minecart_Main:
LDA $F4 : AND.b #$80 : BEQ .not_ready
.active_cart
; Save what track we are currently riding.
LDA.w SprSubtype, X : STA.w !MinecartTrackCache
JSL Link_CancelDash
LDA #$02 : STA.w LinkSomaria
LDA #$01 : STA !LinkInCart
LDA.b #$02 : STA.w LinkSomaria
LDA.b #$01 : STA.w !LinkInCart
; Adjust player pos
LDA.w SprCachedY : SEC : SBC #$0B : STA $20
; Check if the cart is facing east or west
LDA.w SprSubtype, X : CMP.b #$03 : BNE +
LDA.w SprMiscB, X : CMP.b #$03 : BNE +
JSR Minecart_SetDirectionWest
%GotoAction(5) ; Minecart_MoveWest
RTS
@@ -274,6 +332,7 @@ Sprite_Minecart_Main:
RTS
.not_ready
.lifting
;JSR Minecart_HandleLiftAndToss
RTS
}
@@ -283,6 +342,7 @@ Sprite_Minecart_Main:
Minecart_WaitVert:
{
%PlayAnimation(2,3,8)
LDA.w LinkCarryOrToss : AND #$03 : BNE .lifting
LDA.w SprTimerA, X : BNE .not_ready
JSR CheckIfPlayerIsOn : BCC .not_ready
@@ -292,6 +352,9 @@ Sprite_Minecart_Main:
LDA $F4 : AND.b #$80 : BEQ .not_ready
.active_cart
; Save what track we are currently riding.
LDA.w SprSubtype, X : STA.w !MinecartTrackCache
JSL Link_CancelDash
LDA.b #$02 : STA.w LinkSomaria
LDA.b #$01 : STA.w !LinkInCart
@@ -299,7 +362,7 @@ Sprite_Minecart_Main:
LDA.w SprCachedY : SEC : SBC #$0B : STA $20
; Check if the cart is facing north or south
LDA.w SprSubtype, X : BEQ +
LDA.w SprMiscB, X : BEQ +
JSR Minecart_SetDirectionSouth
%GotoAction(4) ; Minecart_MoveSouth
RTS
@@ -309,6 +372,7 @@ Sprite_Minecart_Main:
RTS
.not_ready
.lifting
;JSR Minecart_HandleLiftAndToss
RTS
}
@@ -443,7 +507,7 @@ Sprite_Minecart_Main:
%GotoAction(1) ; Minecart_WaitVert
RTS
.horiz
%GotoAction(0)
%GotoAction(0) ; Minecart_WaitHoriz
.not_ready
RTS
}
@@ -471,6 +535,17 @@ StopCart:
STZ.w SprYSpeed, X
STZ.w SprXSpeed, X
STZ.w !LinkInCart
JSR RoundCoords
LDA.w SprSubtype, X : ASL : TAY
REP #$20
LDA.w SprCachedX : STA.w !MinecartTrackX, Y
LDA.w SprCachedY : STA.w !MinecartTrackY, Y
LDA.w $A0 : STA.w !MinecartTrackRoom, Y
SEP #$20
RTS
}
@@ -485,28 +560,28 @@ InitMovement:
Minecart_SetDirectionNorth:
{
LDA.b #North : STA.w SprSubtype, X : STZ.w !MinecartDirection
LDA.b #Up : STA !SpriteDirection, X
LDA.b #North : STA.w SprMiscB, X : STZ.w !MinecartDirection, X
LDA.b #Up : STA !SpriteDirection, X
RTS
}
Minecart_SetDirectionEast:
{
LDA.b #East : STA.w SprSubtype, X : STA.w !MinecartDirection
LDA.b #Right : STA !SpriteDirection, X
LDA.b #East : STA.w SprMiscB, X : STA.w !MinecartDirection, X
LDA.b #Right : STA !SpriteDirection, X
RTS
}
Minecart_SetDirectionSouth:
{
LDA.b #South : STA.w SprSubtype, X : STA.w !MinecartDirection
LDA.b #Down : STA.w !SpriteDirection, X
LDA.b #South : STA.w SprMiscB, X : STA.w !MinecartDirection, X
LDA.b #Down : STA.w !SpriteDirection, X
RTS
}
Minecart_SetDirectionWest:
{
LDA.b #West : STA.w SprSubtype, X : STA.w !MinecartDirection
LDA.b #West : STA.w SprMiscB, X : STA.w !MinecartDirection, X
LDA.b #Left : STA.w !SpriteDirection, X
RTS
}
@@ -541,7 +616,7 @@ CheckForStopTiles:
RTS
.check_direction
LDA.w SprSubtype, X
LDA.w SprMiscB, X
ASL #2 ; Multiply by 4 to offset rows in the lookup table
STA $07 ; Store the action index in $07
@@ -626,7 +701,7 @@ CheckForCornerTiles:
CLC
RTS
.check_direction
LDA.w SprSubtype, X
LDA.w SprMiscB, X
ASL #2 ; Multiply by 4 to offset rows in the lookup table
STA $07 ; Store the action index in $07
@@ -691,17 +766,17 @@ CheckForTrackTiles:
.horiz
; Are we moving left or right?
LDA.w SprSubtype, X : CMP.b #$03 : BEQ .inverse_horiz_velocity
LDA.w SprMiscB, X : CMP.b #$03 : BEQ .inverse_horiz_velocity
LDA.b #!MinecartSpeed : STA.w SprXSpeed, X
LDA.b #East : STA !MinecartDirection
LDA.b #East : STA !MinecartDirection, X
JMP .done
.inverse_horiz_velocity
LDA.b #-!MinecartSpeed : STA.w SprXSpeed, X
LDA.b #West : STA !MinecartDirection
LDA.b #West : STA !MinecartDirection, X
JMP .done
.vert
; Are we moving up or down?
LDA.w SprSubtype, X : CMP.b #$00 : BEQ .inverse_vert_velocity
LDA.w SprMiscB, X : CMP.b #$00 : BEQ .inverse_vert_velocity
LDA.b #!MinecartSpeed : STA.w SprYSpeed, X
JMP .done
.inverse_vert_velocity
@@ -723,12 +798,12 @@ HandleTileDirections:
.player_on_cart
; Setup Minecart position to look for tile IDs
; We use AND #$F8 to clamp to a 16x16 grid.
; We use AND #$F8 to clamp to a 8x8 grid.
LDA.w SprY, X : AND #$F8 : STA.b $00
LDA.w SprYH, X : STA.b $01
LDA.w SprYH, X : STA.b $01
LDA.w SprX, X : AND #$F8 : STA.b $02
LDA.w SprXH, X : STA.b $03
LDA.w SprXH, X : STA.b $03
; Fetch tile attributes based on current coordinates
LDA.b #$00 : JSL Sprite_GetTileAttr
@@ -737,8 +812,6 @@ HandleTileDirections:
STA.l $7EF362 : STA.l $7EF360
LDA.b #$00 : STA.l $7EF363 : STA.l $7EF361
print "adfsddddddddddddddddddddddddddddddddddddddddddddddddd: ", pc
LDA.w SPRTILE
JSR CheckForOutOfBounds : BCC .notOutOfBounds
JSR RoundCoords
@@ -760,13 +833,45 @@ HandleTileDirections:
RTS
}
; NOTE TO SCAWFUL: This function could really go in a generic sprite
; functions file but I'll leave that up to you.
UpdateCachedCoords:
{
LDA.w SprY, X : STA.w SprCachedY+0
LDA.w SprX, X : STA.w SprCachedX+0
LDA.w SprYH, X : STA.w SprCachedY+1
LDA.w SprXH, X : STA.w SprCachedX+1
RTS
}
; NOTE TO SCAWFUL: This function could really go in a generic sprite
; functions file but I'll leave that up to you.
RoundCoords:
{
; Clamp the Y coord to the nearest multiple of 8.
LDA.b $00 : CLC : ADC.b #$04 : AND.b #$F8 : STA.b $00 : STA.w SprY, x
LDA.b $00 : CLC : ADC.b #$04 : AND.b #$F8 : STA.b $00 : STA.w SprY, X
; Clamp the X coord to the nearest multiple of 8.
LDA.b $02 : CLC : ADC.b #$04 : AND.b #$F8 : STA.b $02 : STA.w SprX, x
LDA.b $02 : CLC : ADC.b #$04 : AND.b #$F8 : STA.b $02 : STA.w SprX, X
JSR UpdateCachedCoords
RTS
}
; TODO: Hook this up to a dungeon loading routine
; mask_routines or gbc_form maybe.
ResetTrackVars:
{
LDA.b #$00 : STA.w !MinecartTrackCache
LDX.b #$41
.loop
DEX
STA.w !MinecartTrackRoom, X
STA.w !MinecartTrackX, X
STA.w !MinecartTrackY, X
CPX.b #$00 : BNE .loop
RTS
}
@@ -785,10 +890,10 @@ HandleDynamicSwitchTileDirections:
JSL Sprite_SetupHitBox ; X is now the ID of the sprite $B0
PLX
JSL CheckIfHitBoxesOverlap : BCC .no_b0
LDA !MinecartDirection : CMP.b #$00 : BEQ .east_or_west
CMP.b #$01 : BEQ .north_or_south
CMP.b #$02 : BEQ .east_or_west
CMP.b #$03 : BEQ .north_or_south
LDA !MinecartDirection, X : CMP.b #$00 : BEQ .east_or_west
CMP.b #$01 : BEQ .north_or_south
CMP.b #$02 : BEQ .east_or_west
CMP.b #$03 : BEQ .north_or_south
.no_b0
RTS
@@ -827,12 +932,12 @@ CheckSpritePresence:
.y_loop
DEY
LDA $0E20, X : CMP.b #$B0 : BEQ .set_flag
BRA .not_b0
BRA .not_b0
.set_flag
SEC ; Set flag indicating sprite ID $B0 is present
STX.w $02
BRA .done
BRA .done
.not_b0
CPY.b #$00 : BNE .y_loop
@@ -911,6 +1016,81 @@ CheckIfPlayerIsOn:
RTS ; Return with carry cleared
}
; =========================================================
; Handle the tossing of the cart
; Changes the SprMiscB of the cart to indicate the direction
; the cart is facing and sets the velocity of the cart
; based on the direction it is facing.
Minecart_HandleToss:
{
LDA.b #$30 : STA.w SprTimerA, X
; Check links facing direction $2F and apply velocity
LDA $2F : CMP.b #$00 : BEQ .toss_north
CMP.b #$02 : BEQ .toss_south
CMP.b #$04 : BEQ .toss_east
CMP.b #$06 : BEQ .toss_west
.toss_north
LDA.b #-!DoubleSpeed : STA.w SprYSpeed, X
LDA #$00 : STA.w SprMiscB, X : STA !SpriteDirection, X
%GotoAction(1) ; Minecart_WaitVert
JMP .continue
.toss_south
LDA.b #!DoubleSpeed : STA.w SprYSpeed, X
LDA #$02 : STA.w SprMiscB, X
LDA #$01 : STA !SpriteDirection, X
%GotoAction(1) ; Minecart_WaitVert
JMP .continue
.toss_east
LDA.b #-!DoubleSpeed : STA.w SprXSpeed, X
LDA #$01 : STA.w SprMiscB, X
LDA #$03 : STA !SpriteDirection, X
%GotoAction(0) ; Minecart_WaitHoriz
JMP .continue
.toss_west
LDA.b #!DoubleSpeed : STA.w SprXSpeed, X
LDA #$03 : STA.w SprMiscB, X
LDA #$02 : STA !SpriteDirection, X
%GotoAction(0) ; Minecart_WaitHoriz
.continue
LDA #$01 : STA.w SprMiscG, X
LDA #$12 : STA.w SprTimerC, X
STA.w SprYRound, X : STA.w SprXRound, X
RTS
}
Minecart_HandleTossedCart:
{
LDA.w SprMiscG, X : BEQ .not_tossed
LDA.w SprHeight, X : BEQ .low_enough
DEC.w SprHeight, X
RTS
.low_enough
LDA.w SprTimerC, X : BNE .not_tossed
LDA.w SprX, X : AND.b #$F8 : STA.w SprX, X
LDA.w SprY, X : AND.b #$F8 : STA.w SprY, X
STZ.w SprMiscG, X
STZ.w SprYSpeed, X
STZ.w SprXSpeed, X
STZ.w SprHeight, X
.not_tossed
RTS
}
Minecart_HandleLiftAndToss:
{
JSR CheckIfPlayerIsOn : BCC .not_tossing
LDA.w LinkCarryOrToss : CMP.b #$02 : BNE .not_tossing
JSR Minecart_HandleToss
.not_tossing
JSL Sprite_CheckIfLifted
JSL Sprite_Move
JSR Minecart_HandleTossedCart
JSL ThrownSprite_TileAndSpriteInteraction_long
RTS
}
; =========================================================
; Draw the portion of the cart which is behind the player