1471 lines
37 KiB
NASM
1471 lines
37 KiB
NASM
; =========================================================
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; Minecart Sprite
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;
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; Used in Goron Mines along with the SwitchTrack and
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; Mineswitch sprite. Makes use of custom collision with
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; somaria track corner tiles.
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;
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; The cart begins in an inactive state, horizontal or vertical
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; and is activated by the player when they stand on the hitbox
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; and press the B button. Based on the SprMiscB of the cart,
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; it will move in that direction until it encounters one of the
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; following scenarions:
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;
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; Somaria Stop Tile - Halt the cart and set its next direction
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; Somaria Corner Track - Switch directions based on cart direction
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; and corner tiletype.
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; Somaria Any Track - Switch direction based on player input
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; Dungeon Transition - Switch to Minecart follower and transition
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; to the next room in a dungeon, spawning
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; a new minecart sprite in the room at Link's
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; location and configuring the direction to move
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; in automatically (no B button to activate)
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;
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; NOTE: Current implementation forbades any two carts from co-existing
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; as the !MinecartDirection variable will be overrode by the prep of
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; the other cart and invalidate the current movement.
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!SPRID = Sprite_Minecart
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!NbrTiles = 08 ; Number of tiles used in a frame
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!Harmless = 01 ; 00 = Sprite is Harmful, 01 = Sprite is Harmless
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!HVelocity = 00 ; Is your sprite going super fast? put 01 if it is
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!Health = 00 ; Number of Health the sprite have
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!Damage = 00 ; (08 is a whole heart), 04 is half heart
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!DeathAnimation = 00 ; 00 = normal death, 01 = no death animation
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!ImperviousAll = 01 ; 00 = Can be attack, 01 = attack will clink on it
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!SmallShadow = 00 ; 01 = small shadow, 00 = no shadow
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!Shadow = 00 ; 00 = don't draw shadow, 01 = draw a shadow
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!Palette = 00 ; Unused in this template (can be 0 to 7)
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!Hitbox = 14 ; 00 to 31, can be viewed in sprite draw tool
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!Persist = 01 ; 01 = your sprite continue to live offscreen
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!Statis = 00 ; 00 = is sprite is alive?, (kill all enemies room)
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!CollisionLayer = 00 ; 01 = will check both layer for collision
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!CanFall = 00 ; 01 sprite can fall in hole, 01 = can't fall
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!DeflectArrow = 00 ; 01 = deflect arrows
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!WaterSprite = 00 ; 01 = can only walk shallow water
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!Blockable = 00 ; 01 = can be blocked by link's shield?
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!Prize = 00 ; 00-15 = the prize pack the sprite will drop from
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!Sound = 00 ; 01 = Play different sound when taking damage
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!Interaction = 00 ; ?? No documentation
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!Statue = 00 ; 01 = Sprite is statue
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!DeflectProjectiles = 00 ; 01 = Sprite will deflect ALL projectiles
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!ImperviousArrow = 00 ; 01 = Impervious to arrows
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!ImpervSwordHammer = 00 ; 01 = Impervious to sword and hammer attacks
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!Boss = 00 ; 00 = normal sprite, 01 = sprite is a boss
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%Set_Sprite_Properties(Sprite_Minecart_Prep, Sprite_Minecart_Long)
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; =========================================================
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; Link is in cart
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!LinkInCart = $35
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!MinecartSpeed = 20
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!DoubleSpeed = 30
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; SprMiscB and Minecart movement direction
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; nesw
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; 0 - north
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; 1 - east
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; 2 - south
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; 3 - west
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North = $00
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East = $01
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South = $02
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West = $03
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!MinecartDirection = $0DE0 ; = SprMiscC
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; Sprite Facing Direction
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; udlr
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; 0 - up
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; 1 - down
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; 2 - left
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; 3 - right
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Up = $00
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Down = $01
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Left = $02
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Right = $03
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!SpriteDirection = $0DE0
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; A "track" is one minecart that can exist in multiple different places.
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; Allowing the player to leave a minecart in one room and then still find
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; it in the same place upon returning to that room.
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; There is a total possibility of 0x20 different subtypes that can be set.
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; Therefore there can be a total of 0x20 different tracks.
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; This value is used to keep track of which room the minecart was left
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; in. Currently #$00 is reserved to keep track of new tracks that have
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; not been used yet so tracks will not work when stopped in room 00. Up
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; to $0768 used which is all free ram.
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!MinecartTrackRoom = $0728
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; Track X position. This is used to keep track of the possibility of
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; there being more than one stop per track in the same room. Up to $07A8
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; used which is all free ram.
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!MinecartTrackX = $0768
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; Track X position. This is used to keep track of the possibility of
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; there being more than one stop per track in the same room. Up to $07E8
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; used which is all free ram.
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!MinecartTrackY = $07A8
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; This is used to keep track of which track we are on while riding
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; the cart. We can only use one cart at a time so this is only 1 byte.
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!MinecartTrackCache = $07E8
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; This is used to keep track of which direction we are going during room
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; transitions. We can only use one cart at a time so this is only 1 byte.
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!MinecartDirectionCache = $07E9
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; This is used to keep track of which cart in a room we are riding. This
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; is based of the X value used to index sprite arrays.
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!MinecartCurrent = $07EA
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; =========================================================
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; Collision setup:
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; 0xB0 - Horizontal straight
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; 0xB1 - Vertical straight
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; 0xB2 - Top left corner
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; 0xB3 - Bottom left corner
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; 0xB4 - Top right corner
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; 0xB5 - Bottom right corner
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; 0xB6 - 4 way intersection
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; 0xB7 - Stop north
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; 0xB8 - Stop south
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; 0xB9 - Stop west
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; 0xBA - Stop east
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; 0xBB - North T intersection
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; 0xBC - South T intersection
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; 0xBD - East T intersection
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; 0xBE - West T intersection
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; 0xD0 - Top left switch
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; 0xD1 - Bottom left switch
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; 0xD2 - Top right switch
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; 0xD3 - Bottom right switch
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; TL switch turns into TR when on
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; BL switch turns into TL when on
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; TR switch turns into BR when on
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; BR switch turns into BL when on
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; =========================================================
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Sprite_Minecart_Long:
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{
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PHB : PHK : PLB
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JSR Sprite_Minecart_DrawTop ; Draw behind Link
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JSR Sprite_Minecart_DrawBottom ; Draw in front of Link
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JSL Sprite_CheckActive : BCC .SpriteIsNotActive
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JSR Sprite_Minecart_Main
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.SpriteIsNotActive
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PLB
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RTL
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}
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; =========================================================
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; The SprMiscB of the minecart determines the direction it
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; will move in, so if the SprMiscB is 0 the cart will move
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; north and start in WaitVert mode.
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Sprite_Minecart_Prep:
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{
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PHB : PHK : PLB
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JSR UpdateCachedCoords
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LDA.w SprSubtype, X : ASL : TAY
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; If Link is on the same track as this cart's track AND this cart is
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; not the active cart, kill the cart.
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LDA.w SprSubtype, X : CMP.w !MinecartTrackCache : BNE .notSameTrack
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LDA.b !LinkInCart : BEQ .notInCart
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; If the SprMiscB is > 4, then it's an active cart. This should only
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; be the case when transitioning from a follower.
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LDA.w SprMiscB, X : CMP.b #$04 : BCS .active1
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BRA .killMinecart
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.notInCart
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.notSameTrack
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REP #$20
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; Check if the track has already been initialized. If not we need to
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; tell the game where the cart on the track starts
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LDA.w !MinecartTrackRoom, Y : BNE .trackAlreadySetUp
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LDA.w .TrackStartingX, Y : STA.w !MinecartTrackX, Y
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LDA.w .TrackStartingY, Y : STA.w !MinecartTrackY, Y
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LDA.w .TrackStartingRooms, Y : STA.w !MinecartTrackRoom, Y
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.trackAlreadySetUp
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; Check if we are currently in the room where the track was left.
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CMP.b $A0 : BEQ .inRoom
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.killMinecart
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SEP #$20
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STZ.w SprState, X
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PLB
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RTL
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.inRoom
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; Check if the coordinates match, if not kill the sprite.
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LDA.w !MinecartTrackX, Y : CMP.w SprCachedX : BNE .killMinecart
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LDA.w !MinecartTrackY, Y : CMP.w SprCachedY : BNE .killMinecart
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SEP #$20
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.active1
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STZ.w SprMiscG, X ; Clear the active tossing flag
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LDA.b #$04 : STA.w SprNbrOAM, X ; Nbr Oam Entries
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LDA.b #$40 : STA.w SprGfxProps, X ; Impervious props
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LDA.b #$E0 : STA.w SprHitbox, X ; Persist outside camera
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STZ.w SprDefl, X ; Sprite persist in dungeon
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STZ.w SprBump, X ; No bump damage
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STZ.w SprTileDie, X ; Set interactive hitbox
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STZ.w !MinecartDirection, X
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STZ.w !SpriteDirection, X
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; If the SprMiscB is > 4, then it's an active cart. This should only
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; be the case when transitioning from a follower.
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LDA.w SprMiscB, X : CMP.b #$04 : BCC .notActive
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SEC : SBC.b #$04 : STA.w SprMiscB, X
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; Go directly to the direction action we are facing. We add 2 to
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; skip the Minecart_WaitHoriz and Minecart_WaitVert actions.
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CLC : ADC.b #$02 : STA.w SprAction, X
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BRA .active2
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.notActive
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; Setup Minecart position to look for tile IDs
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; We use AND #$F8 to clamp to a 8x8 grid.
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LDA.w SprY, X : AND #$F8 : STA.b $00
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LDA.w SprYH, X : STA.b $01
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LDA.w SprX, X : AND #$F8 : STA.b $02
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LDA.w SprXH, X : STA.b $03
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; Fetch tile attributes based on current coordinates
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LDA.b #$00 : JSL Sprite_GetTileAttr
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; Set our starting direction based on the stop tile we are on.
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; This means minecarts should always be placed on top of a stop tile.
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LDA.w SPRTILE
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CMP.b #$B7 : BEQ .goSouth
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CMP.b #$B8 : BEQ .goNorth
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CMP.b #$B9 : BEQ .goEast
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CMP.b #$BA : BEQ .goWest
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.goNorth
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LDA.b #North : STA.w SprMiscB, X
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%GotoAction(1) ; Minecart_WaitVert
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JMP .done2
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.goEast
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LDA.b #East : STA.w SprMiscB, X
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%GotoAction(0) ; Minecart_WaitHoriz
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JMP .done2
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.goSouth
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LDA.b #South : STA.w SprMiscB, X
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%GotoAction(1) ; Minecart_WaitVert
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JMP .done2
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.goWest
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LDA.b #West : STA.w SprMiscB, X
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%GotoAction(0) ; Minecart_WaitHoriz
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.done2
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.active2
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STZ.w SprTimerB, X
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LDA.w SprMiscB, X : CMP.b #$00 : BEQ .north
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CMP.b #$01 : BEQ .east
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CMP.b #$02 : BEQ .south
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CMP.b #$03 : BEQ .west
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.north
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; Both !MinecartDirection and !SpriteDirection set to 0 earlier.
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BRA .vert
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.south
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LDA.b #South : STA !MinecartDirection, X
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LDA.b #Down : STA !SpriteDirection, X
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.vert
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%PlayAnimation(2,3,8)
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LDA.b #$02 : STA.w $0D90, X
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BRA .done
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.east
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LDA.b #East : STA !MinecartDirection, X
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LDA.b #Right : STA !SpriteDirection, X
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BRA .horz
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.west
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LDA.b #West : STA !MinecartDirection, X
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LDA.b #Left : STA !SpriteDirection, X
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.horz
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%PlayAnimation(0,1,8)
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LDA.b #$00 : STA.w $0D90, X
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.done
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PLB
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RTL
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; This is which room each track should start in if it hasn't already
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; been given a track.
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.TrackStartingRooms
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dw $0089, $0089, $0089, $0088, $0089, $0089, $0089, $0089
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dw $0089, $0089, $0089, $0089, $0089, $0089, $0089, $0089
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dw $0089, $0089, $0089, $0089, $0089, $0089, $0089, $0089
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dw $0089, $0089, $0089, $0089, $0089, $0089, $0089, $0089
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; This is where within the room each track should start in if it hasn't
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; already been given a position. This is necessary to allow for more
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; than one stopping point to be in one room.
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.TrackStartingX
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dw $1320, $12D0, $1300, $1100, $1300, $1300, $1300, $1300
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dw $1300, $1300, $1300, $1300, $1300, $1300, $1300, $1300
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dw $1300, $1300, $1300, $1300, $1300, $1300, $1300, $1300
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dw $1300, $1300, $1300, $1300, $1300, $1300, $1300, $1300
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.TrackStartingY
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dw $11C0, $1120, $1100, $10D0, $1100, $1100, $1100, $1100
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dw $1100, $1100, $1100, $1100, $1100, $1100, $1100, $1100
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dw $1100, $1100, $1100, $1100, $1100, $1100, $1100, $1100
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dw $1100, $1100, $1100, $1100, $1100, $1100, $1100, $1100
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; NOTE TO SCAWFUL: All of these values will need to be set when you
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; place the carts within ZS. I set them all to spawn in the middle of
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; room 0x89 just for testing purposes.
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}
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; =========================================================
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Sprite_Minecart_Main:
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{
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LDA.w SprAction, X
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JSL UseImplicitRegIndexedLocalJumpTable
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dw Minecart_WaitHoriz ; 0x00
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dw Minecart_WaitVert ; 0x01
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dw Minecart_MoveNorth ; 0x02
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dw Minecart_MoveEast ; 0x03
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dw Minecart_MoveSouth ; 0x04
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dw Minecart_MoveWest ; 0x05
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dw Minecart_Release ; 0x06
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; -------------------------------------------------------
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; 0x00
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Minecart_WaitHoriz:
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{
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%PlayAnimation(0,1,8)
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LDA.w LinkCarryOrToss : AND #$03 : BNE .lifting
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LDA.w SprTimerA, X : BNE .not_ready
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JSR CheckIfPlayerIsOn : BCC .not_ready
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; Check for B button
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LDA $F4 : AND.b #$80 : BEQ .not_ready
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; Save what track we are currently riding.
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LDA.w SprSubtype, X : STA.w !MinecartTrackCache
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JSL Link_CancelDash
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LDA.b #$02 : STA.w LinkSomaria
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LDA.b #$01 : STA.w !LinkInCart
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; Adjust player pos
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LDA.w SprCachedY : SEC : SBC #$0B : STA $20
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; Check if the cart is facing east or west
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LDA.w SprMiscB, X : CMP.b #$03 : BNE +
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JSR Minecart_SetDirectionWest
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%GotoAction(5) ; Minecart_MoveWest
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RTS
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+
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JSR Minecart_SetDirectionEast
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%GotoAction(3) ; Minecart_MoveEast
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RTS
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.not_ready
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.lifting
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;JSR Minecart_HandleLiftAndToss
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RTS
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}
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; -------------------------------------------------------
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; 0x01
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Minecart_WaitVert:
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{
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%PlayAnimation(2,3,8)
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LDA.w LinkCarryOrToss : AND #$03 : BNE .lifting
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LDA.w SprTimerA, X : BNE .not_ready
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JSR CheckIfPlayerIsOn : BCC .not_ready
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; Check for B button
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LDA $F4 : AND.b #$80 : BEQ .not_ready
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; Save what track we are currently riding.
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LDA.w SprSubtype, X : STA.w !MinecartTrackCache
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JSL Link_CancelDash
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LDA.b #$02 : STA.w LinkSomaria
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LDA.b #$01 : STA.w !LinkInCart
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; Adjust player pos
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LDA.w SprCachedY : SEC : SBC #$0B : STA $20
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; Check if the cart is facing north or south
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LDA.w SprMiscB, X : BEQ +
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JSR Minecart_SetDirectionSouth
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%GotoAction(4) ; Minecart_MoveSouth
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RTS
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+
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JSR Minecart_SetDirectionNorth
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%GotoAction(2) ; Minecart_MoveNorth
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RTS
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.not_ready
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.lifting
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;JSR Minecart_HandleLiftAndToss
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RTS
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}
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; -------------------------------------------------------
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; 0x02
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Minecart_MoveNorth:
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{
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%PlayAnimation(2,3,8)
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JSR InitMovement
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; Used for an un-implemented speed switch feature.
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LDA $36 : BNE .fast_speed
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LDA.b #-!MinecartSpeed : STA.w SprYSpeed, X
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JMP +
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.fast_speed
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LDA.b #-!DoubleSpeed : STA.w SprYSpeed, X
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+
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JSL Sprite_MoveVert
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; Get direction of the cart (0 to 3)
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LDY.w !SpriteDirection, X
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JSL DragPlayer
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JSR HandlePlayerCameraAndMoveCart
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JSR HandleTileDirections
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RTS
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}
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; -------------------------------------------------------
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; 0x03
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Minecart_MoveEast:
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{
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%PlayAnimation(0,1,8)
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JSR InitMovement
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; Used for an un-implemented speed switch feature.
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LDA $36 : BNE .fast_speed
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LDA.b #!MinecartSpeed : STA.w SprXSpeed, X
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JMP +
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.fast_speed
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LDA.b #!DoubleSpeed : STA.w SprXSpeed, X
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+
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JSL Sprite_MoveHoriz
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; Get direction of the cart (0 to 3)
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LDY.w !SpriteDirection, X
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JSL DragPlayer
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JSR HandlePlayerCameraAndMoveCart
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JSR HandleTileDirections
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RTS
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}
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; -------------------------------------------------------
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; 0x04
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Minecart_MoveSouth:
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{
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%PlayAnimation(2,3,8)
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JSR InitMovement
|
|
|
|
; Used for an un-implemented speed switch feature.
|
|
LDA $36 : BNE .fast_speed
|
|
LDA.b #!MinecartSpeed : STA.w SprYSpeed, X
|
|
JMP +
|
|
.fast_speed
|
|
LDA.b #!DoubleSpeed : STA.w SprYSpeed, X
|
|
+
|
|
|
|
JSL Sprite_MoveVert
|
|
|
|
; Get direction of the cart (0 to 3)
|
|
LDY.w !SpriteDirection, X
|
|
JSL DragPlayer
|
|
JSR HandlePlayerCameraAndMoveCart
|
|
|
|
JSR HandleTileDirections
|
|
|
|
RTS
|
|
}
|
|
|
|
; -------------------------------------------------------
|
|
; 0x05
|
|
Minecart_MoveWest:
|
|
{
|
|
%PlayAnimation(0,1,8)
|
|
JSR InitMovement
|
|
|
|
; Used for an un-implemented speed switch feature.
|
|
LDA $36 : BNE .fast_speed
|
|
LDA.b #-!MinecartSpeed : STA.w SprXSpeed, X
|
|
JMP +
|
|
.fast_speed
|
|
LDA.b #-!DoubleSpeed : STA.w SprXSpeed, X
|
|
+
|
|
|
|
JSL Sprite_MoveHoriz
|
|
|
|
; Get direction of the cart (0 to 3)
|
|
LDY.w !SpriteDirection, X
|
|
JSL DragPlayer
|
|
JSR HandlePlayerCameraAndMoveCart
|
|
|
|
JSR HandleTileDirections
|
|
|
|
RTS
|
|
}
|
|
|
|
; -------------------------------------------------------
|
|
; 0x06
|
|
Minecart_Release:
|
|
{
|
|
JSR StopCart
|
|
LDA.w SprTimerD, X : BNE .not_ready
|
|
LDA #$40 : STA.w SprTimerA, X
|
|
LDA.w !SpriteDirection, X : CMP.b #$00 : BEQ .vert
|
|
CMP.b #$02 : BEQ .vert
|
|
JMP .horiz
|
|
.vert
|
|
%GotoAction(1) ; Minecart_WaitVert
|
|
RTS
|
|
.horiz
|
|
%GotoAction(0) ; Minecart_WaitHoriz
|
|
.not_ready
|
|
RTS
|
|
}
|
|
}
|
|
|
|
; =========================================================
|
|
|
|
HandlePlayerCameraAndMoveCart:
|
|
{
|
|
LDA $22 : SEC : SBC $3F : STA $31
|
|
LDA $20 : SEC : SBC $3E : STA $30
|
|
PHX
|
|
JSL Link_HandleMovingAnimation_FullLongEntry
|
|
JSL HandleIndoorCameraAndDoors
|
|
JSL Link_CancelDash
|
|
PLX
|
|
|
|
LDA #$35 : STA $012E ; Cart SFX
|
|
RTS
|
|
}
|
|
|
|
StopCart:
|
|
{
|
|
STZ.w LinkSomaria
|
|
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
|
|
|
|
STZ.w !MinecartCurrent
|
|
|
|
RTS
|
|
}
|
|
|
|
InitMovement:
|
|
{
|
|
LDA.b $22 : STA.b $3F
|
|
LDA.b $23 : STA.b $41
|
|
LDA.b $20 : STA.b $3E
|
|
LDA.b $21 : STA.b $40
|
|
RTS
|
|
}
|
|
|
|
Minecart_SetDirectionNorth:
|
|
{
|
|
; Reset the animation timer and set the animation early to make it
|
|
; more snappy.
|
|
STZ.w SprTimerB, X
|
|
%PlayAnimation(2,3,8)
|
|
|
|
LDA.b #North : STA.w SprMiscB, X
|
|
STA.w !MinecartDirection, X : STA.w !MinecartDirectionCache
|
|
LDA.b #Up : STA !SpriteDirection, X
|
|
|
|
TXA : STA.w !MinecartCurrent
|
|
RTS
|
|
}
|
|
|
|
Minecart_SetDirectionEast:
|
|
{
|
|
; Reset the animation timer and set the animation early to make it
|
|
; more snappy.
|
|
STZ.w SprTimerB, X
|
|
%PlayAnimation(0,1,8)
|
|
|
|
LDA.b #East : STA.w SprMiscB, X
|
|
STA.w !MinecartDirection, X : STA.w !MinecartDirectionCache
|
|
LDA.b #Right : STA !SpriteDirection, X
|
|
|
|
TXA : STA.w !MinecartCurrent
|
|
RTS
|
|
}
|
|
|
|
Minecart_SetDirectionSouth:
|
|
{
|
|
; Reset the animation timer and set the animation early to make it
|
|
; more snappy.
|
|
STZ.w SprTimerB, X
|
|
%PlayAnimation(2,3,8)
|
|
|
|
LDA.b #South : STA.w SprMiscB, X
|
|
STA.w !MinecartDirection, X : STA.w !MinecartDirectionCache
|
|
LDA.b #Down : STA.w !SpriteDirection, X
|
|
|
|
TXA : STA.w !MinecartCurrent
|
|
RTS
|
|
}
|
|
|
|
Minecart_SetDirectionWest:
|
|
{
|
|
; Reset the animation timer and set the animation early to make it
|
|
; more snappy.
|
|
STZ.w SprTimerB, X
|
|
%PlayAnimation(0,1,8)
|
|
|
|
LDA.b #West : STA.w SprMiscB, X
|
|
STA.w !MinecartDirection, X : STA.w !MinecartDirectionCache
|
|
LDA.b #Left : STA.w !SpriteDirection, X
|
|
|
|
TXA : STA.w !MinecartCurrent
|
|
RTS
|
|
}
|
|
|
|
; =========================================================
|
|
|
|
HandleTileDirections:
|
|
{
|
|
; If the cart got disconnected from the player, release them.
|
|
JSR CheckIfPlayerIsOn : BCS .player_on_cart
|
|
%GotoAction(6) ; Minecart_Release
|
|
RTS
|
|
.player_on_cart
|
|
|
|
; Setup Minecart position to look for tile IDs
|
|
; We use AND #$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
|
|
|
|
; Debug: put the tile type into the rupee SRM.
|
|
STA.l $7EF362 : STA.l $7EF360
|
|
LDA.b #$00 : STA.l $7EF363 : STA.l $7EF361
|
|
|
|
JSR CheckForOutOfBounds : BCC .notOutOfBounds
|
|
JSR RoundCoords
|
|
|
|
BRA .done
|
|
.notOutOfBounds
|
|
|
|
JSR CheckForStopTiles : BCC .noStop
|
|
JSR RoundCoords
|
|
|
|
BRA .done
|
|
.noStop
|
|
|
|
JSR CheckForPlayerInput : BCC .noInput
|
|
JSR RoundCoords
|
|
|
|
BRA .done
|
|
.noInput
|
|
|
|
JSR CheckForCornerTiles : BCC .noCorner
|
|
JSR RoundCoords
|
|
|
|
BRA .done
|
|
.noCorner
|
|
|
|
JSR HandleDynamicSwitchTileDirections : BCC .noSwitch
|
|
JSR RoundCoords
|
|
|
|
.noSwitch
|
|
|
|
.done
|
|
RTS
|
|
}
|
|
|
|
; =========================================================
|
|
|
|
CheckForOutOfBounds:
|
|
{
|
|
LDA.w SPRTILE : CMP.b #$02 : BNE .not_out_of_bounds
|
|
; If the tile is out of bounds, release the cart
|
|
LDA #$40 : STA.w SprTimerD, X
|
|
%GotoAction(6) ; Minecart_Release
|
|
|
|
SEC
|
|
RTS
|
|
.not_out_of_bounds
|
|
|
|
CLC
|
|
RTS
|
|
}
|
|
|
|
; CLC if no stop occured, SEC if stop occured.
|
|
CheckForStopTiles:
|
|
{
|
|
LDA.w SPRTILE
|
|
CMP.b #$B7 : BEQ .check_direction
|
|
CMP.b #$B8 : BEQ .check_direction
|
|
CMP.b #$B9 : BEQ .check_direction
|
|
CMP.b #$BA : BEQ .check_direction
|
|
CLC
|
|
RTS
|
|
.check_direction
|
|
|
|
LDA.w SprMiscB, X
|
|
ASL #2 ; Multiply by 4 to offset rows in the lookup table
|
|
STA $07 ; Store the action index in $07
|
|
|
|
; Subtract $B7 to normalize the tile type to 0 to 3
|
|
LDA.w SPRTILE : SEC : SBC.b #$B7
|
|
|
|
CLC : ADC.w $07 : TAY
|
|
LDA.w .DirectionTileLookup, Y
|
|
|
|
; Check if the tile is a stop tile
|
|
CMP.b #$01 : BEQ .stop_north
|
|
CMP.b #$02 : BEQ .stop_east
|
|
CMP.b #$03 : BEQ .stop_south
|
|
CMP.b #$04 : BEQ .stop_west
|
|
CLC
|
|
RTS
|
|
|
|
.stop_north
|
|
; If the direction is already south, that means we have already stopped
|
|
; or are heading south and don't need to stop.
|
|
JSR Minecart_SetDirectionSouth
|
|
JMP .go_vert
|
|
|
|
.stop_south
|
|
; If the direction is already north, that means we have already stopped
|
|
; or are heading north and don't need to stop.
|
|
JSR Minecart_SetDirectionNorth
|
|
|
|
.go_vert
|
|
%SetTimerA($40)
|
|
JSR StopCart
|
|
%GotoAction(1) ; Minecart_WaitVert
|
|
JSL Link_ResetProperties_A
|
|
|
|
SEC
|
|
RTS
|
|
|
|
.stop_east
|
|
; If the direction is already west, that means we have already stopped
|
|
; or are heading west and don't need to stop.
|
|
JSR Minecart_SetDirectionWest
|
|
JMP .go_horiz
|
|
|
|
.stop_west
|
|
; If the direction is already east, that means we have already stopped
|
|
; or are heading east and don't need to stop.
|
|
JSR Minecart_SetDirectionEast
|
|
|
|
.go_horiz
|
|
%SetTimerA($40)
|
|
JSR StopCart
|
|
%GotoAction(0) ; Minecart_WaitHoriz
|
|
JSL Link_ResetProperties_A
|
|
|
|
SEC
|
|
RTS
|
|
|
|
; Direction to move on tile collision
|
|
; 00 - stop or nothing
|
|
; 01 - north
|
|
; 02 - east
|
|
; 03 - south
|
|
; 04 - west
|
|
.DirectionTileLookup
|
|
{
|
|
; north east south west
|
|
db $01, $00, $00, $00 ; North
|
|
db $00, $00, $00, $02 ; East
|
|
db $00, $03, $00, $00 ; South
|
|
db $00, $00, $04, $00 ; West
|
|
}
|
|
}
|
|
|
|
; Check for input from the user (u,d,l,r) on tile B6, BD
|
|
; CLC if not on an input tile or there was no input recieved.
|
|
CheckForPlayerInput:
|
|
{
|
|
; Load the tile index
|
|
LDA.w SPRTILE : CMP.b #$B6 : BEQ .can_input ; Intersection
|
|
CMP.b #$BB : BEQ .can_input ; North T
|
|
CMP.b #$BC : BEQ .can_input ; South T
|
|
CMP.b #$BD : BEQ .can_input ; East T
|
|
CMP.b #$BE : BEQ .can_input ; West T
|
|
CLC
|
|
RTS
|
|
.can_input
|
|
; Normalize the tile.
|
|
SEC : SBC.b #$B6 : TAY
|
|
|
|
; Get an offset based on the tile the get the allowed directions.
|
|
LDA.w .intersectionMap, Y
|
|
|
|
; Add the direction the cart is going to prevent the cart from
|
|
; returning from where it came from.
|
|
CLC : ADC.w !SpriteDirection, X : STA.b $06 : TAY
|
|
|
|
; Filter the input.
|
|
LDA $F0 : AND.w .d_pad_press, Y : STA $05 : AND.b #$08 : BEQ .not_pressing_up
|
|
.north
|
|
JSR Minecart_SetDirectionNorth
|
|
%GotoAction(2) ; Minecart_MoveNorth
|
|
|
|
SEC
|
|
RTS
|
|
|
|
.not_pressing_up
|
|
LDA.b $05 : AND.b #$04 : BEQ .not_pressing_down
|
|
.south
|
|
JSR Minecart_SetDirectionSouth
|
|
%GotoAction(4) ; Minecart_MoveSouth
|
|
|
|
SEC
|
|
RTS
|
|
|
|
.not_pressing_down
|
|
LDA.b $05 : AND.b #$02 : BEQ .not_pressing_left
|
|
.west
|
|
JSR Minecart_SetDirectionWest
|
|
%GotoAction(5) ; Minecart_MoveWest
|
|
|
|
SEC
|
|
RTS
|
|
|
|
.not_pressing_left
|
|
LDA.b $05 : AND.b #$01 : BEQ .return
|
|
.east
|
|
JSR Minecart_SetDirectionEast
|
|
%GotoAction(3) ; Minecart_MoveEast
|
|
|
|
SEC
|
|
RTS
|
|
.return
|
|
|
|
; If no input was detected, we will assign a direction based on our
|
|
; current direction and what junction we are encountering, this is to
|
|
; prevent us from going off the top of a north junction or down off a
|
|
; south one for example.
|
|
LDY.b $06
|
|
LDA.w .defaultDirection, Y : CMP.b #North : BEQ .north
|
|
CMP.b #South : BEQ .south
|
|
CMP.b #East : BEQ .east
|
|
CMP.b #West : BEQ .west
|
|
|
|
; If we made it here, no input was found and no default directions were
|
|
; chosen.
|
|
CLC
|
|
RTS
|
|
|
|
; When setting the values for the "allowed" directions the cart can go
|
|
; on the junctions for both tables we do not allow the direction we are
|
|
; already going. If do allow the current direction the cart will get
|
|
; locked on the junction because it will constantly be coordinate
|
|
; clamped to within the junction tile, preventing it from escaping that
|
|
; tile.
|
|
.d_pad_press
|
|
; udlr
|
|
; up, down, left, right
|
|
db $0F, $0F, $0F, $0F ; Nothing
|
|
db $0B, $07, $0E, $0D ; $B6 Intersection
|
|
db $03, $03, $04, $04 ; $BB North T
|
|
db $03, $03, $08, $08 ; $BC South T
|
|
db $02, $02, $0C, $0C ; $BD East T
|
|
db $01, $01, $0C, $0C ; $BE West T
|
|
|
|
; #$04 is don't change direction.
|
|
.defaultDirection
|
|
; udlr
|
|
; up, down, left, right
|
|
db $04, $04, $04, $04 ; Nothing
|
|
db $04, $04, $04, $04 ; $B6 Intersection
|
|
db East, $04, $04, $04 ; $BB North T
|
|
db $04, East, $04, $04 ; $BC South T
|
|
db $04, $04, $04, North ; $BD East T
|
|
db $04, $04, North, $04 ; $BE West T
|
|
|
|
.intersectionMap
|
|
; B6, B7, B8, B9, BA, BB, BC, BD, BE
|
|
db $04, $00, $00, $00, $00, $08, $0C, $10, $14
|
|
}
|
|
|
|
CheckForCornerTiles:
|
|
{
|
|
LDA.w SPRTILE
|
|
CMP.b #$B2 : BEQ .check_direction ; TL
|
|
CMP.b #$B3 : BEQ .check_direction ; BL
|
|
CMP.b #$B4 : BEQ .check_direction ; TR
|
|
CMP.b #$B5 : BEQ .check_direction ; BR
|
|
CLC
|
|
RTS
|
|
.check_direction
|
|
LDA.w SprMiscB, X
|
|
ASL #2 ; Multiply by 4 to offset rows in the lookup table
|
|
STA $07 ; Store the action index in $07
|
|
|
|
; Subtract $B2 to normalize the tile type to 0 to 3
|
|
LDA.w SPRTILE : SEC : SBC.b #$B2
|
|
; Add action index to tile type offset for the composite index
|
|
; Transfer to Y to use as an offset for the rows
|
|
CLC : ADC.b $07 : TAY
|
|
LDA.w .DirectionTileLookup, Y
|
|
CMP.b #$01 : BEQ .move_north
|
|
CMP.b #$02 : BEQ .move_east
|
|
CMP.b #$03 : BEQ .move_south
|
|
CMP.b #$04 : BEQ .move_west
|
|
CLC
|
|
RTS
|
|
|
|
.move_north
|
|
JSR Minecart_SetDirectionNorth
|
|
%GotoAction(2) ; Minecart_MoveNorth
|
|
BRA .done
|
|
|
|
.move_east
|
|
JSR Minecart_SetDirectionEast
|
|
%GotoAction(3) ; Minecart_MoveEast
|
|
BRA .done
|
|
|
|
.move_south
|
|
JSR Minecart_SetDirectionSouth
|
|
%GotoAction(4) ; Minecart_MoveSouth
|
|
BRA .done
|
|
|
|
.move_west
|
|
JSR Minecart_SetDirectionWest
|
|
%GotoAction(5) ; Minecart_MoveWest
|
|
|
|
.done
|
|
SEC
|
|
RTS
|
|
|
|
; Direction to move on tile collision
|
|
; 00 - stop or nothing
|
|
; 01 - north
|
|
; 02 - east
|
|
; 03 - south
|
|
; 04 - west
|
|
.DirectionTileLookup
|
|
{
|
|
; TL, BL, TR, BR Coming from the:
|
|
db $02, $00, $04, $00 ; North
|
|
db $00, $00, $03, $01 ; East
|
|
db $00, $02, $00, $04 ; South
|
|
db $03, $01, $00, $00 ; West
|
|
}
|
|
}
|
|
|
|
; Check for the switch_track sprite and move based on the
|
|
; state of that sprite.
|
|
HandleDynamicSwitchTileDirections:
|
|
{
|
|
; Check for the switch tile.
|
|
LDA.w SPRTILE : CMP.b #$D0 : BEQ .onSwitchTile
|
|
CMP.b #$D1 : BEQ .onSwitchTile
|
|
CMP.b #$D2 : BEQ .onSwitchTile
|
|
CMP.b #$D3 : BEQ .onSwitchTile
|
|
CLC
|
|
RTS
|
|
.onSwitchTile
|
|
|
|
; Find out if the sprite $B0 is in the room and if we are
|
|
; currently touching it.
|
|
JSR CheckTrackSpritePresence : BCS .B0Present
|
|
CLC
|
|
RTS
|
|
.B0Present
|
|
|
|
LDA.w SprMiscB, X
|
|
ASL #3 ; Multiply by 8 to offset rows in the lookup table
|
|
STA.b $07 ; Store the action index in $07
|
|
|
|
; Get the subtype of the track so that we can get its on/off state.
|
|
LDA.w SprSubtype, Y : TAY
|
|
|
|
; Normalize the tile data and get the type of track (TL, BL, TR, BR) and
|
|
; x2 so that we can read the correct column in the table.
|
|
LDA.w SPRTILE : SEC : SBC.b #$D0 : ASL
|
|
|
|
; Add the current direction and the state of the switch to determine
|
|
; which direction we should go next.
|
|
CLC : ADC.w SwitchRam, Y : CLC : ADC.b $07 : TAY
|
|
LDA.w .DirectionTileLookup, Y
|
|
CMP.b #$01 : BEQ .move_north
|
|
CMP.b #$02 : BEQ .move_east
|
|
CMP.b #$03 : BEQ .move_south
|
|
CMP.b #$04 : BEQ .move_west
|
|
CLC
|
|
RTS
|
|
|
|
.move_north
|
|
JSR Minecart_SetDirectionNorth
|
|
%GotoAction(2) ; Minecart_MoveNorth
|
|
BRA .done
|
|
|
|
.move_east
|
|
JSR Minecart_SetDirectionEast
|
|
%GotoAction(3) ; Minecart_MoveEast
|
|
BRA .done
|
|
|
|
.move_south
|
|
JSR Minecart_SetDirectionSouth
|
|
%GotoAction(4) ; Minecart_MoveSouth
|
|
BRA .done
|
|
|
|
.move_west
|
|
JSR Minecart_SetDirectionWest
|
|
%GotoAction(5) ; Minecart_MoveWest
|
|
|
|
.done
|
|
SEC
|
|
RTS
|
|
|
|
; Direction to move on tile collision
|
|
; 00 - stop or nothing
|
|
; 01 - north
|
|
; 02 - east
|
|
; 03 - south
|
|
; 04 - west
|
|
.DirectionTileLookup
|
|
{
|
|
; Off, On, Off, On, Off, On, Off, On
|
|
; TL, TL, BL, BL, TR, TR, BR, BR Coming from the:
|
|
db $02, $04, $00, $02, $04, $00, $00, $00 ; North
|
|
db $00, $03, $00, $00, $03, $01, $01, $00 ; East
|
|
db $00, $00, $02, $00, $00, $04, $04, $02 ; South
|
|
db $03, $00, $01, $03, $00, $00, $00, $01 ; West
|
|
}
|
|
|
|
; $D0 TL turns into TR when on.
|
|
; $D1 BL turns into TL when on.
|
|
; $D2 TR turns into BR when on.
|
|
; $D3 BR turns into BL when on.
|
|
}
|
|
|
|
; Unused?
|
|
CheckForTrackTiles:
|
|
{
|
|
CMP.b #$B0 : BEQ .horiz
|
|
CMP.b #$B1 : BEQ .vert
|
|
CMP.b #$BB : BEQ .horiz
|
|
CMP.b #$BC : BEQ .vert
|
|
JMP .done
|
|
|
|
.horiz
|
|
; Are we moving left or right?
|
|
LDA.w SprMiscB, X : CMP.b #$03 : BEQ .inverse_horiz_velocity
|
|
LDA.b #!MinecartSpeed : STA.w SprXSpeed, X
|
|
LDA.b #East : STA !MinecartDirection, X
|
|
JMP .done
|
|
.inverse_horiz_velocity
|
|
LDA.b #-!MinecartSpeed : STA.w SprXSpeed, X
|
|
LDA.b #West : STA !MinecartDirection, X
|
|
JMP .done
|
|
.vert
|
|
; Are we moving up or down?
|
|
LDA.w SprMiscB, X : CMP.b #$00 : BEQ .inverse_vert_velocity
|
|
LDA.b #!MinecartSpeed : STA.w SprYSpeed, X
|
|
JMP .done
|
|
.inverse_vert_velocity
|
|
LDA.b #-!MinecartSpeed : STA.w SprYSpeed, X
|
|
.done
|
|
RTS
|
|
}
|
|
|
|
; =========================================================
|
|
|
|
; $04 = sprite index of sprite ID $B0
|
|
; SEC if sprite is present.
|
|
CheckTrackSpritePresence:
|
|
{
|
|
LDY.b #$10
|
|
.loop
|
|
DEY
|
|
; Check if the sprite is $B0
|
|
LDA.w $0E20, Y : CMP.b #$B0 : BNE .not_b0
|
|
; Check if the high bytes of the coordinates match.
|
|
LDA.w SprYH, X : CMP.w SprYH, Y : BNE .not_b0
|
|
LDA.w SprXH, X : CMP.w SprXH, Y : BNE .not_b0
|
|
; Check if the low bytes match but round the cart's coordinates.
|
|
; Offset the Y by 8 so that we match the cart
|
|
LDA.w SprY, X : CLC : ADC.b #$04 : AND.b #$F8 : CLC : ADC.b #$08
|
|
CMP.w SprY, Y : BNE .not_b0
|
|
LDA.w SprX, X : CLC : ADC.b #$04 : AND.b #$F8
|
|
CMP.w SprX, Y : BNE .not_b0
|
|
STY.b $04
|
|
SEC ; Set flag indicating sprite ID $B0 is present.
|
|
BRA .done
|
|
.not_b0
|
|
CPY.b #$00 : BNE .loop
|
|
CLC ; Assume sprite ID $B0 is not present
|
|
|
|
.done
|
|
RTS
|
|
}
|
|
|
|
; Sets carry if player is overlapping the sprite
|
|
; Clear carry if player is outside the bounds
|
|
CheckIfPlayerIsOn:
|
|
{
|
|
REP #$20
|
|
LDA $22 : CLC : ADC #$0009 : CMP.w SprCachedX : BCC .left
|
|
LDA $22 : SEC : SBC #$0009 : CMP.w SprCachedX : BCS .right
|
|
LDA $20 : CLC : ADC #$0012 : CMP.w SprCachedY : BCC .up
|
|
LDA $20 : SEC : SBC #$0012 : CMP.w SprCachedY : BCS .down
|
|
SEP #$21
|
|
RTS ; Return with carry set
|
|
.left
|
|
.right
|
|
.up
|
|
.down
|
|
SEP #$20
|
|
CLC
|
|
RTS ; Return with carry cleared
|
|
}
|
|
|
|
; =========================================================
|
|
|
|
pushpc
|
|
|
|
org $0DFA68
|
|
RebuildHUD_Keys:
|
|
|
|
org $028260
|
|
JSL ResetTrackVars
|
|
|
|
pullpc
|
|
|
|
ResetTrackVars:
|
|
{
|
|
; Replaced code.
|
|
JSL.l RebuildHUD_Keys
|
|
|
|
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
|
|
|
|
RTL
|
|
}
|
|
|
|
; =========================================================
|
|
; 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
|
|
|
|
Sprite_Minecart_DrawTop:
|
|
{
|
|
JSL Sprite_PrepOamCoord
|
|
LDA #$08
|
|
JSL OAM_AllocateFromRegionB
|
|
|
|
LDA $0DC0, X : CLC : ADC $0D90, X : TAY ; Animation Frame
|
|
LDA .start_index, Y : STA $06
|
|
|
|
PHX
|
|
LDX .nbr_of_tiles, Y ; amount of tiles -1
|
|
LDY.b #$00
|
|
.nextTile
|
|
|
|
PHX ; Save current Tile Index?
|
|
TXA : CLC : ADC $06 ; Add Animation Index Offset
|
|
PHA ; Keep the value with animation index offset?
|
|
|
|
ASL A : TAX
|
|
|
|
REP #$20
|
|
|
|
LDA $00 : CLC : ADC .x_offsets, X : STA ($90), Y
|
|
AND.w #$0100 : STA $0E
|
|
INY
|
|
LDA $02 : CLC : ADC .y_offsets, X : STA ($90), Y
|
|
CLC : ADC #$0010 : CMP.w #$0100
|
|
SEP #$20
|
|
BCC .on_screen_y
|
|
|
|
LDA.b #$F0 : STA ($90), Y ;Put the sprite out of the way
|
|
STA $0E
|
|
.on_screen_y
|
|
|
|
PLX ; Pullback Animation Index Offset (without the *2 not 16bit anymore)
|
|
INY
|
|
LDA .chr, X : STA ($90), Y
|
|
INY
|
|
LDA .properties, X : STA ($90), Y
|
|
|
|
PHY
|
|
TYA : LSR #2 : TAY
|
|
LDA .sizes, X : ORA $0F : STA ($92), Y ; store size in oam buffer
|
|
PLY : INY
|
|
PLX : DEX : BPL .nextTile
|
|
|
|
PLX
|
|
|
|
RTS
|
|
|
|
.start_index
|
|
db $00, $02, $04, $06
|
|
.nbr_of_tiles
|
|
db 1, 1, 1, 1
|
|
.x_offsets
|
|
dw -8, 8
|
|
dw -8, 8
|
|
dw -8, 8
|
|
dw -8, 8
|
|
.y_offsets
|
|
dw -12, -12
|
|
dw -11, -11
|
|
dw -8, -8
|
|
dw -7, -7
|
|
.chr
|
|
db $40, $40
|
|
db $40, $40
|
|
db $42, $42
|
|
db $42, $42
|
|
.properties
|
|
db $3D, $7D
|
|
db $3D, $7D
|
|
db $3D, $7D
|
|
db $3D, $7D
|
|
.sizes
|
|
db $02, $02
|
|
db $02, $02
|
|
db $02, $02
|
|
db $02, $02
|
|
}
|
|
|
|
; =========================================================
|
|
; Draw the portion of the cart which is in front of the player
|
|
|
|
Sprite_Minecart_DrawBottom:
|
|
{
|
|
JSL Sprite_PrepOamCoord
|
|
LDA #$08
|
|
JSL OAM_AllocateFromRegionC
|
|
|
|
LDA $0DC0, X : CLC : ADC $0D90, X : TAY;Animation Frame
|
|
LDA .start_index, Y : STA $06
|
|
|
|
PHX
|
|
LDX .nbr_of_tiles, Y ;amount of tiles -1
|
|
LDY.b #$00
|
|
.nextTile
|
|
|
|
PHX ; Save current Tile Index?
|
|
TXA : CLC : ADC $06 ; Add Animation Index Offset
|
|
|
|
PHA ; Keep the value with animation index offset?
|
|
|
|
ASL A : TAX
|
|
|
|
REP #$20
|
|
|
|
LDA $00 : CLC : ADC .x_offsets, X : STA ($90), Y
|
|
AND.w #$0100 : STA $0E
|
|
INY
|
|
LDA $02 : CLC : ADC .y_offsets, X : STA ($90), Y
|
|
CLC : ADC #$0010 : CMP.w #$0100
|
|
SEP #$20
|
|
BCC .on_screen_y
|
|
|
|
LDA.b #$F0 : STA ($90), Y ;Put the sprite out of the way
|
|
STA $0E
|
|
.on_screen_y
|
|
|
|
PLX ; Pullback Animation Index Offset (without the *2 not 16bit anymore)
|
|
INY
|
|
LDA .chr, X : STA ($90), Y
|
|
INY
|
|
LDA .properties, X : STA ($90), Y
|
|
|
|
PHY
|
|
TYA : LSR #2 : TAY
|
|
LDA .sizes, X : ORA $0F : STA ($92), Y ; store size in oam buffer
|
|
PLY : INY
|
|
PLX : DEX : BPL .nextTile
|
|
|
|
PLX
|
|
|
|
RTS
|
|
|
|
.start_index
|
|
db $00, $02, $04, $06
|
|
.nbr_of_tiles
|
|
db 1, 1, 1, 1
|
|
.x_offsets
|
|
dw -8, 8
|
|
dw -8, 8
|
|
dw -8, 8
|
|
dw -8, 8
|
|
.y_offsets
|
|
dw 4, 4
|
|
dw 5, 5
|
|
dw 8, 8
|
|
dw 9, 9
|
|
.chr
|
|
db $60, $60
|
|
db $60, $60
|
|
db $62, $62
|
|
db $62, $62
|
|
.properties
|
|
db $3D, $7D
|
|
db $3D, $7D
|
|
db $3D, $7D
|
|
db $3D, $7D
|
|
.sizes
|
|
db $02, $02
|
|
db $02, $02
|
|
db $02, $02
|
|
db $02, $02
|
|
}
|
|
|
|
; =========================================================
|
|
; Shutter door only opens if the player is in the cart
|
|
|
|
RoomTag_ShutterDoorRequiresCart:
|
|
{
|
|
LDA.w !LinkInCart : BEQ .no_cart
|
|
REP #$30
|
|
LDX.w #$0000 : CPX.w $0468 : BEQ .exit
|
|
STZ.w $0468
|
|
STZ.w $068E
|
|
STZ.w $0690
|
|
SEP #$30
|
|
|
|
; SFX3.1B
|
|
LDA.b #$1B : STA.w $012F
|
|
LDA.b #$05 : STA.b $11
|
|
.exit
|
|
SEP #$30
|
|
.no_cart
|
|
JML $01CC5A
|
|
}
|
|
|
|
pushpc
|
|
|
|
; JML to return here 01CC5A
|
|
;org $01CC08
|
|
;RoomTag_Holes3:
|
|
;JML RoomTag_ShutterDoorRequiresCart
|
|
; LDA.b #$06 : BRA RoomTag_TriggerHoles
|
|
|
|
pullpc
|
|
|
|
; =========================================================
|