almost spawnining missiles
This commit is contained in:
Tyrel Souza
parent
0285ec619c
commit
37e998eb7e
|
|
@ -15,4 +15,4 @@ clean:
|
|||
# Rule to run the final cartridge .nes file in the FCEUX emulator
|
||||
###############################################################################
|
||||
run:
|
||||
on-workspace 6 "fceux atlantico.nes"
|
||||
on-workspace 4 "fceux atlantico.nes"
|
||||
|
|
|
|||
|
|
@ -12,6 +12,4 @@
|
|||
Type .byte
|
||||
XPos .byte
|
||||
YPos .byte
|
||||
XVel .byte
|
||||
YVel .byte
|
||||
.endstruct
|
||||
|
|
|
|||
|
|
@ -5,30 +5,38 @@
|
|||
.include "utils.inc"
|
||||
|
||||
.segment "ZEROPAGE"
|
||||
Buttons: .res 1 ; Pressed buttons (A|B|Select|Start|Up|Dwn|Lft|Rgt)
|
||||
Buttons: .res 1 ; Pressed buttons (A|B|Select|Start|Up|Dwn|Lft|Rgt)
|
||||
PrevButtons: .res 1 ; Pressed buttons (A|B|Select|Start|Up|Dwn|Lft|Rgt) PREVIOUSLY
|
||||
|
||||
XPos: .res 2 ; Player X 16-bit position (8.8 fixed-point): hi+lo/256px
|
||||
YPos: .res 2 ; Player Y 16-bit position (8.8 fixed-point): hi+lo/256px
|
||||
XPos: .res 1 ; Player X 16-bit position (8.8 fixed-point): hi+lo/256px
|
||||
YPos: .res 1 ; Player Y 16-bit position (8.8 fixed-point): hi+lo/256px
|
||||
|
||||
XVel: .res 1 ; Player X (signed) velocity (in pixels per 256 frames)
|
||||
YVel: .res 1 ; Player Y (signed) velocity (in pixels per 256 frames)
|
||||
XVel: .res 1 ; Player X (signed) velocity (in pixels per 256 frames)
|
||||
YVel: .res 1 ; Player Y (signed) velocity (in pixels per 256 frames)
|
||||
|
||||
Frame: .res 1 ; Counts frames (0 to 255 and repeats)
|
||||
IsDrawComplete: .res 1 ; Flag to indicate when vblank is done drawing
|
||||
Clock60: .res 1 ; Counter that increments per second (60 frames)
|
||||
BgPtr: .res 2 ; Pointer to background address - 16bits (lo,hi)
|
||||
PrevSubmarine: .res 1 ; how long ago we added previous submarine in seconds
|
||||
|
||||
XScroll: .res 1 ; Store the horizontal scroll position
|
||||
CurrNametable: .res 1 ; Store the current starting nametable (0 or 1)
|
||||
Column: .res 1 ; Stores the column (of tiles) we are in the level
|
||||
NewColAddr: .res 2 ; The destination address of the new column in PPU
|
||||
SourceAddr: .res 2 ; The source address in ROM of the new column tiles
|
||||
Frame: .res 1 ; Counts frames (0 to 255 and repeats)
|
||||
IsDrawComplete: .res 1 ; Flag to indicate when vblank is done drawing
|
||||
Clock60: .res 1 ; Counter that increments per second (60 frames)
|
||||
|
||||
ParamType: .res 1 ; Used as param to subrouting
|
||||
ParamXPos: .res 1 ; Used as param to subrouting
|
||||
ParamYPos: .res 1 ; Used as param to subrouting
|
||||
ParamXVel: .res 1 ; Used as param to subrouting
|
||||
ParamYVel: .res 1 ; Used as param to subrouting
|
||||
BgPtr: .res 2 ; Pointer to background address - 16bits (lo,hi)
|
||||
SprPtr: .res 2 ; pointer to the sprite address - 16bits (lo,hi)
|
||||
|
||||
XScroll: .res 1 ; Store the horizontal scroll position
|
||||
CurrNametable: .res 1 ; Store the current starting nametable (0 or 1)
|
||||
Column: .res 1 ; Stores the column (of tiles) we are in the level
|
||||
NewColAddr: .res 2 ; The destination address of the new column in PPU
|
||||
SourceAddr: .res 2 ; The source address in ROM of the new column tiles
|
||||
|
||||
ParamType: .res 1 ; Used as param to subrouting
|
||||
ParamXPos: .res 1 ; Used as param to subrouting
|
||||
ParamYPos: .res 1 ; Used as param to subrouting
|
||||
ParamTileNum: .res 1 ; Used as param to subrouting
|
||||
ParamNumTiles: .res 1 ; Used as param to subrouting
|
||||
ParamAttribs: .res 1 ; Used as param to subrouting
|
||||
|
||||
PrevOAMCount: .res 1 ; Store previous number of bytes sent to the OAM
|
||||
|
||||
; Store enough space for an array of actors
|
||||
ActorsArray: .res MAX_ACTORS * .sizeof(Actor)
|
||||
|
|
@ -215,7 +223,7 @@ LoopButtons:
|
|||
;AddNewActor
|
||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
;; Subroutine to add new actor to the array in the first empty slot found
|
||||
;; Params: ParamType, ParamXPos, ParamYPos, ParamXVel, ParamYVel
|
||||
;; Params: ParamType, ParamXPos, ParamYPos, ParamYVel
|
||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
.proc AddNewActor
|
||||
ldx #0
|
||||
|
|
@ -231,6 +239,7 @@ LoopButtons:
|
|||
adc #.sizeof(Actor)
|
||||
tax
|
||||
jmp ArrayLoop
|
||||
|
||||
AddNewActorToArray:
|
||||
lda ParamType
|
||||
sta ActorsArray+Actor::Type,x
|
||||
|
|
@ -238,14 +247,239 @@ LoopButtons:
|
|||
sta ActorsArray+Actor::XPos,x
|
||||
lda ParamYPos
|
||||
sta ActorsArray+Actor::YPos,x
|
||||
lda ParamXVel
|
||||
sta ActorsArray+Actor::XVel,x
|
||||
lda ParamYVel
|
||||
sta ActorsArray+Actor::YVel,x
|
||||
EndRoutine:
|
||||
rts
|
||||
.endproc
|
||||
|
||||
.proc SpawnActors
|
||||
SpawnSubmarine:
|
||||
lda Clock60 ; Submarines added in 3 second intervals
|
||||
sec ;
|
||||
sbc PrevSubmarine ;
|
||||
cmp #3 ; Only add if 3 seconds have pased
|
||||
bne :+ ;
|
||||
lda #ActorType::SUBMARINE ;
|
||||
sta ParamType ; Load Param for the actor type
|
||||
lda #223 ;
|
||||
sta ParamXPos ; Load X Pos
|
||||
lda #185 ;
|
||||
sta ParamYPos ;
|
||||
;
|
||||
jsr AddNewActor ; Call subroutine
|
||||
;
|
||||
lda Clock60 ;
|
||||
sta PrevSubmarine ; Save the current clocktime as the submarine clock spawn time
|
||||
:
|
||||
rts
|
||||
.endproc
|
||||
|
||||
|
||||
.proc UpdateActors
|
||||
ldx #0 ; counter of how many actors
|
||||
ActorsLoop:
|
||||
lda ActorsArray+Actor::Type,x
|
||||
|
||||
cmp #ActorType::MISSILE
|
||||
bne :+
|
||||
;;Update y Pos
|
||||
;; y--
|
||||
lda ActorsArray+Actor::YPos,x
|
||||
sec
|
||||
sbc #1 ; Decrement Y Position
|
||||
sta ActorsArray+Actor::YPos,x ;
|
||||
bcs SkipMissile
|
||||
;; Delete Missile
|
||||
lda #ActorType::NULL
|
||||
sta ActorsArray+Actor::Type,x ;
|
||||
SkipMissile:
|
||||
jmp NextActor
|
||||
:
|
||||
|
||||
cmp #ActorType::SUBMARINE
|
||||
bne :+
|
||||
;;Update x Pos
|
||||
;; x--
|
||||
lda ActorsArray+Actor::XPos,x
|
||||
sec
|
||||
sbc #1 ; Decrement X Position
|
||||
sta ActorsArray+Actor::XPos,x ;
|
||||
bcs SkipSubmarine
|
||||
;; Delete SUB
|
||||
lda #ActorType::NULL
|
||||
sta ActorsArray+Actor::Type,x ;
|
||||
SkipSubmarine:
|
||||
jmp NextActor
|
||||
:
|
||||
|
||||
NextActor:
|
||||
txa
|
||||
clc
|
||||
adc #.sizeof(Actor)
|
||||
tax
|
||||
cmp #MAX_ACTORS * .sizeof(Actor)
|
||||
bne ActorsLoop
|
||||
rts
|
||||
.endproc
|
||||
|
||||
|
||||
|
||||
.proc RenderActors
|
||||
lda #$02 ;
|
||||
sta SprPtr+1 ;
|
||||
lda #$00 ;
|
||||
sta SprPtr ; set SprPtr to $0200
|
||||
|
||||
ldy #0 ; counter of how many tiles
|
||||
ldx #0 ; counter of how many actors
|
||||
ActorsLoop:
|
||||
lda ActorsArray+Actor::Type,x
|
||||
|
||||
cmp #ActorType::SPRITE0
|
||||
bne :+
|
||||
;; Load Params with Y, TileNumber, Attribs, X,NumTiles=4
|
||||
lda ActorsArray+Actor::XPos,x
|
||||
sta ParamXPos
|
||||
lda ActorsArray+Actor::YPos,x
|
||||
sta ParamYPos
|
||||
lda #$70
|
||||
sta ParamTileNum
|
||||
lda #%00100000
|
||||
sta ParamAttribs
|
||||
lda #1
|
||||
sta ParamNumTiles
|
||||
jsr DrawSprite
|
||||
jmp NextActor
|
||||
:
|
||||
|
||||
cmp #ActorType::PLAYER
|
||||
bne :+
|
||||
;; Load Params with Y, TileNumber, Attribs, X,NumTiles=4
|
||||
lda ActorsArray+Actor::XPos,x
|
||||
sta ParamXPos
|
||||
lda ActorsArray+Actor::YPos,x
|
||||
sta ParamYPos
|
||||
lda #$60
|
||||
sta ParamTileNum
|
||||
lda #%00000000
|
||||
sta ParamAttribs
|
||||
lda #4
|
||||
sta ParamNumTiles
|
||||
jsr DrawSprite
|
||||
jmp NextActor
|
||||
:
|
||||
|
||||
cmp #ActorType::MISSILE
|
||||
bne :+
|
||||
;; Load Params with Y, TileNumber, Attribs, X,NumTiles=1
|
||||
lda ActorsArray+Actor::XPos,x
|
||||
sta ParamXPos
|
||||
lda ActorsArray+Actor::YPos,x
|
||||
sta ParamYPos
|
||||
lda #$50
|
||||
sta ParamTileNum
|
||||
lda #%00000001
|
||||
sta ParamAttribs
|
||||
lda #1
|
||||
sta ParamNumTiles
|
||||
jsr DrawSprite
|
||||
jmp NextActor
|
||||
:
|
||||
|
||||
cmp #ActorType::SUBMARINE
|
||||
bne :+
|
||||
;; Load Params with Y, TileNumber, Attribs, X,NumTiles=1
|
||||
lda ActorsArray+Actor::XPos,x
|
||||
sta ParamXPos
|
||||
lda ActorsArray+Actor::YPos,x
|
||||
sta ParamYPos
|
||||
lda #$04
|
||||
sta ParamTileNum
|
||||
lda #%00000000
|
||||
sta ParamAttribs
|
||||
lda #4
|
||||
sta ParamNumTiles
|
||||
jsr DrawSprite
|
||||
jmp NextActor
|
||||
:
|
||||
|
||||
NextActor:
|
||||
txa
|
||||
clc
|
||||
adc #.sizeof(Actor)
|
||||
tax
|
||||
cmp #MAX_ACTORS * .sizeof(Actor)
|
||||
|
||||
beq :+
|
||||
jmp ActorsLoop
|
||||
:
|
||||
|
||||
tya
|
||||
pha ; Save Y to the Stack
|
||||
|
||||
LoopTrailingTiles:
|
||||
;; Loop all bytes until we reach PrevOAMCount
|
||||
cpy PrevOAMCount
|
||||
bcs :+
|
||||
lda #$FF
|
||||
sta (SprPtr),y ; set Y position to $ff to hide
|
||||
iny ;
|
||||
sta (SprPtr),y ; Set tile number as $FF
|
||||
iny ;
|
||||
sta (SprPtr),y ; Set attribs as $FF
|
||||
iny ;
|
||||
sta (SprPtr),y ; Setr X Position to $FF to hide tile
|
||||
iny ;
|
||||
jmp LoopTrailingTiles
|
||||
:
|
||||
|
||||
pla
|
||||
sta PrevOAMCount
|
||||
rts
|
||||
.endproc
|
||||
|
||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
;; Routine to loop "NumTiles" times, sending bytes to the OAM-RAM
|
||||
;; Params = ParamXPos, ParamYPos, ParamTileNum, ParamAttribs, ParamNumTiles
|
||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
.proc DrawSprite
|
||||
txa ;push x to stack
|
||||
pha ; save value of X register before anything
|
||||
|
||||
ldx #0
|
||||
TileLoop:
|
||||
lda ParamYPos
|
||||
sta (SprPtr),y ; Send Y Position to Ram
|
||||
iny
|
||||
|
||||
lda ParamTileNum ; Send Tile# to the OAM
|
||||
sta (SprPtr),y ;
|
||||
inc ParamTileNum ; ParamTileNum++
|
||||
iny
|
||||
|
||||
lda ParamAttribs ; Send Attribs to the OAM
|
||||
sta (SprPtr),y
|
||||
iny
|
||||
|
||||
lda ParamXPos ; Send X Position to the OAM
|
||||
sta (SprPtr),y
|
||||
clc
|
||||
adc #8
|
||||
sta ParamXPos ; increment X Pos 8 pixels
|
||||
|
||||
iny
|
||||
|
||||
inx ; X++
|
||||
cpx ParamNumTiles ; loop NumTiles times
|
||||
bne TileLoop
|
||||
|
||||
; pop x from stack
|
||||
pla
|
||||
tax ; pull value of X from stack and transfer to x
|
||||
|
||||
rts
|
||||
.endproc
|
||||
|
||||
|
||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
;; Reset handler (called when the NES resets or powers on)
|
||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
|
|
@ -274,9 +508,6 @@ AddSprite0:
|
|||
sta ParamXPos
|
||||
lda #27
|
||||
sta ParamYPos
|
||||
lda #0
|
||||
sta ParamXVel
|
||||
sta ParamYVel
|
||||
jsr AddNewActor
|
||||
|
||||
AddPlayer:
|
||||
|
|
@ -286,9 +517,6 @@ AddPlayer:
|
|||
sta ParamXPos
|
||||
lda YPos
|
||||
sta ParamYPos
|
||||
lda #0
|
||||
sta ParamXVel
|
||||
sta ParamYVel
|
||||
jsr AddNewActor
|
||||
|
||||
InitBackgroundTiles:
|
||||
|
|
@ -361,6 +589,9 @@ EnableRendering:
|
|||
|
||||
;;;;;;; START GAME LOOP
|
||||
GameLoop:
|
||||
lda Buttons
|
||||
sta PrevButtons
|
||||
|
||||
;Perform Game Logic Here
|
||||
jsr ReadControllers
|
||||
|
||||
|
|
@ -368,26 +599,21 @@ CheckAButton:
|
|||
lda Buttons
|
||||
and #BUTTON_A
|
||||
beq :+
|
||||
lda YPos
|
||||
lda #ActorType::MISSILE
|
||||
sta ParamType
|
||||
lda XPos
|
||||
sta ParamXPos
|
||||
lda YPos
|
||||
sta ParamYPos
|
||||
lda #0
|
||||
sta ParamXVel
|
||||
lda #255
|
||||
sta ParamYVel
|
||||
jsr AddNewActor
|
||||
lda Buttons
|
||||
and #BUTTON_A ; DEBOUNCE A PRESS
|
||||
cmp PrevButtons ; Compare current buttons and check if A was previously pressed
|
||||
beq:+
|
||||
lda #ActorType::MISSILE
|
||||
sta ParamType
|
||||
lda XPos
|
||||
sta ParamXPos
|
||||
lda YPos
|
||||
jsr AddNewActor
|
||||
:
|
||||
|
||||
;; TODO
|
||||
;;------------------
|
||||
;jsr SpawnActors
|
||||
;jsr UpdateActors
|
||||
;jsr RenderActors
|
||||
;;------------------
|
||||
jsr SpawnActors
|
||||
jsr UpdateActors
|
||||
jsr RenderActors
|
||||
|
||||
WaitForVBlank: ; we lock execution
|
||||
lda IsDrawComplete ; check and only perform game loop call once NMI is done drawing
|
||||
|
|
@ -433,26 +659,26 @@ NewAttribsCheck:
|
|||
jsr DrawNewAttribs
|
||||
:
|
||||
|
||||
;SetPPUNoScroll:
|
||||
; lda #0
|
||||
; sta PPU_SCROLL
|
||||
; sta PPU_SCROLL
|
||||
;
|
||||
;EnablePPUSprite0:
|
||||
; lda #%10010000
|
||||
; sta PPU_CTRL
|
||||
; lda #%00011110
|
||||
; sta PPU_MASK
|
||||
;
|
||||
;WaitForNoSprite0:
|
||||
; lda PPU_STATUS
|
||||
; and #%01000000
|
||||
; bne WaitForNoSprite0
|
||||
;
|
||||
;WaitForSprite0:
|
||||
; lda PPU_STATUS
|
||||
; and #%01000000 ; PPU address $2002 bit 6 is the sprite hit flag
|
||||
; beq WaitForSprite0 ; loop until we do NOT have a sprite 0 hit
|
||||
SetPPUNoScroll:
|
||||
lda #0
|
||||
sta PPU_SCROLL
|
||||
sta PPU_SCROLL
|
||||
|
||||
EnablePPUSprite0:
|
||||
lda #%10010000
|
||||
sta PPU_CTRL
|
||||
lda #%00011110
|
||||
sta PPU_MASK
|
||||
|
||||
WaitForNoSprite0:
|
||||
lda PPU_STATUS
|
||||
and #%01000000
|
||||
bne WaitForNoSprite0
|
||||
|
||||
WaitForSprite0:
|
||||
lda PPU_STATUS
|
||||
and #%01000000 ; PPU address $2002 bit 6 is the sprite hit flag
|
||||
beq WaitForSprite0 ; loop until we do NOT have a sprite 0 hit
|
||||
|
||||
ScrollBackground:
|
||||
inc XScroll ; XScroll++
|
||||
|
|
|
|||
Binary file not shown.
Binary file not shown.
Loading…
Reference in New Issue
Block a user