Implement RNG
This commit is contained in:
Randy Thiemann
parent
6f0d5d539c
commit
9cedde3ed7
|
|
@ -1,8 +1,4 @@
|
|||
; *****************************************************************************
|
||||
; * *
|
||||
; * Cartridge Header. *
|
||||
; * *
|
||||
; *****************************************************************************
|
||||
SECTION "Header", ROM0[$100]
|
||||
jp MainEntryPoint
|
||||
ds $150 - @, 0 ; RGBFIX will fill in the header.
|
||||
SECTION "Cartridge Header", ROM0[$100]
|
||||
nop
|
||||
jp Main
|
||||
ds $150 - @, 0
|
||||
|
|
|
|||
|
|
@ -1,34 +1,138 @@
|
|||
IF !DEF(RNG_ASM)
|
||||
DEF RNG_ASM EQU 1
|
||||
|
||||
|
||||
INCLUDE "globals.asm"
|
||||
|
||||
|
||||
SECTION "RNG Variables", WRAM0
|
||||
wRNGSeed: ds 4
|
||||
wPieceHistory: ds 4
|
||||
wNextPiece:: ds 1
|
||||
|
||||
|
||||
section "RNG Functions", ROM0
|
||||
NextByte::
|
||||
StartNewGame::
|
||||
; Do some bit fuckery on the seed using the gameboy's free-running timers.
|
||||
ld hl, wRNGSeed
|
||||
ldh a, [rDIV]
|
||||
xor a, [hl]
|
||||
ld [hl+], a
|
||||
|
||||
ldh a, [rTIMA]
|
||||
xor a, [hl]
|
||||
ld [hl+], a
|
||||
|
||||
ldh a, [rDIV]
|
||||
xor a, [hl]
|
||||
ld [hl+], a
|
||||
|
||||
ldh a, [rTIMA]
|
||||
xor a, [hl]
|
||||
ld [hl], a
|
||||
|
||||
; Initialize the next history.
|
||||
ld hl, wPieceHistory
|
||||
ld a, PIECE_Z
|
||||
ld [hl+], a
|
||||
ld [hl+], a
|
||||
ld a, PIECE_S
|
||||
ld [hl+], a
|
||||
ld [hl], a
|
||||
|
||||
; Get the first piece and make sure it's not Z, S or O.
|
||||
: call NextPiece
|
||||
cp a, PIECE_Z
|
||||
jr z, :-
|
||||
cp a, PIECE_S
|
||||
jr z, :-
|
||||
cp a, PIECE_O
|
||||
jr z, :-
|
||||
|
||||
; Store it.
|
||||
ld hl, wPieceHistory
|
||||
ld [hl], a
|
||||
ld hl, wNextPiece
|
||||
ld [hl], a
|
||||
ret
|
||||
|
||||
|
||||
GetNextPiece::
|
||||
ld e, 7
|
||||
: dec e
|
||||
jr z, :+
|
||||
|
||||
call NextPiece
|
||||
ld hl, wPieceHistory
|
||||
cp a, [hl]
|
||||
jr z, :-
|
||||
inc hl
|
||||
cp a, [hl]
|
||||
jr z, :-
|
||||
inc hl
|
||||
cp a, [hl]
|
||||
jr z, :-
|
||||
inc hl
|
||||
cp a, [hl]
|
||||
jr z, :-
|
||||
|
||||
: ld hl, wNextPiece
|
||||
ld [hl], a
|
||||
ld b, a
|
||||
ld hl, wPieceHistory+2
|
||||
ld a, [hl+]
|
||||
ld [hl], a
|
||||
ld hl, wPieceHistory+1
|
||||
ld a, [hl+]
|
||||
ld [hl], a
|
||||
ld hl, wPieceHistory
|
||||
ld a, [hl+]
|
||||
ld [hl-], a
|
||||
ld a, b
|
||||
ld [hl], a
|
||||
ret
|
||||
|
||||
|
||||
NextPiece:
|
||||
call NextByte
|
||||
and a, $07
|
||||
cp a, 7
|
||||
ret nz
|
||||
dec a
|
||||
ret
|
||||
|
||||
NextByte:
|
||||
; Load seed
|
||||
ld hl,wRNGSeed+3
|
||||
ld a,[hl-]
|
||||
ld b,a
|
||||
ld a,[hl-]
|
||||
ld c,a
|
||||
ld a,[hl-]
|
||||
ld a, [hl-]
|
||||
ld b, a
|
||||
ld a, [hl-]
|
||||
ld c, a
|
||||
ld a, [hl-]
|
||||
|
||||
; Multiply by 0x01010101
|
||||
add [hl]
|
||||
ld d,a
|
||||
ld d, a
|
||||
adc c
|
||||
ld c,a
|
||||
ld c, a
|
||||
adc b
|
||||
ld b,a
|
||||
ld b, a
|
||||
|
||||
; Add 0x31415927 and write back
|
||||
ld a,[hl]
|
||||
ld a, [hl]
|
||||
add $27
|
||||
ld [hl+],a
|
||||
ld a,d
|
||||
ld [hl+], a
|
||||
ld a, d
|
||||
adc $59
|
||||
ld [hl+],a
|
||||
ld a,c
|
||||
ld [hl+], a
|
||||
ld a, c
|
||||
adc $41
|
||||
ld [hl+],a
|
||||
ld c,a
|
||||
ld a,b
|
||||
ld [hl+], a
|
||||
ld c, a
|
||||
ld a, b
|
||||
adc $31
|
||||
ld [hl],a
|
||||
ld b,a
|
||||
ld [hl], a
|
||||
ret
|
||||
|
||||
|
||||
ENDC
|
||||
|
|
|
|||
41
src/main.asm
41
src/main.asm
|
|
@ -1,18 +1,21 @@
|
|||
INCLUDE "globals.asm"
|
||||
INCLUDE "memcpy.asm"
|
||||
INCLUDE "hardwarectl.asm"
|
||||
INCLUDE "memory.asm"
|
||||
INCLUDE "interrupts.asm"
|
||||
INCLUDE "sprites.asm"
|
||||
INCLUDE "rng.asm"
|
||||
INCLUDE "res/tiles.inc"
|
||||
INCLUDE "res/gameplay_map.inc"
|
||||
|
||||
SECTION "Code Entry Point", ROM0
|
||||
MainEntryPoint::
|
||||
Main::
|
||||
; Turn off LCD during initialization.
|
||||
call DisableLCD
|
||||
wait_vram
|
||||
xor a, a
|
||||
ldh [rLCDC], a
|
||||
|
||||
; Save some power and turn off the audio.
|
||||
call DisableAudio
|
||||
xor a, a
|
||||
ldh [rNR52], a
|
||||
|
||||
; We use a single set of tiles for the entire game, so we copy it at the start.
|
||||
ld de, Tiles
|
||||
|
|
@ -27,7 +30,9 @@ MainEntryPoint::
|
|||
call UnsafeMemCopy
|
||||
|
||||
; Make sure both sprites and bg use the same tile data.
|
||||
call SetTileDataBanks
|
||||
ldh a, [rLCDC]
|
||||
or LCDCF_BLK01
|
||||
ldh [rLCDC], a
|
||||
|
||||
; The tilemap is just for testing for now.
|
||||
ld de, GameplayTilemap
|
||||
|
|
@ -44,6 +49,11 @@ MainEntryPoint::
|
|||
ld a, PALETTE_REGULAR
|
||||
set_all_palettes
|
||||
|
||||
; Get the timer going. It's used for RNG.
|
||||
xor a, a
|
||||
ldh [rTMA], a
|
||||
ld a, TACF_262KHZ | TACF_START
|
||||
|
||||
; Zero out the ram where needed.
|
||||
call InitializeVariables
|
||||
|
||||
|
|
@ -51,12 +61,17 @@ MainEntryPoint::
|
|||
call InitializeLCDCInterrupt
|
||||
|
||||
; And turn the LCD back on before we start.
|
||||
call EnableLCD
|
||||
ldh a, [rLCDC]
|
||||
or LCDCF_ON | LCDCF_BGON | LCDCF_OBJON
|
||||
ldh [rLCDC], a
|
||||
|
||||
; Make sure the first game loop starts just like all the future ones.
|
||||
wait_vblank
|
||||
wait_vblank_end
|
||||
|
||||
; TEMP: Set up the game.
|
||||
call StartNewGame
|
||||
|
||||
|
||||
GameLoop::
|
||||
call GetInput
|
||||
|
|
@ -65,10 +80,18 @@ GameLoop::
|
|||
; Handle gameplay here
|
||||
; TODO
|
||||
|
||||
ld a, 0
|
||||
ldh a, [hCtr]
|
||||
inc a
|
||||
and a, $1F
|
||||
ldh [hCtr], a
|
||||
|
||||
jr nz, :+
|
||||
call GetNextPiece
|
||||
|
||||
: ld a, [wNextPiece]
|
||||
call ApplyNext
|
||||
|
||||
ld a, 4
|
||||
ld a, [wNextPiece]
|
||||
call ApplyHold
|
||||
|
||||
ld hl, wSPRScore1
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
#Emulicious settings file
|
||||
#Wed Oct 11 08:17:53 CEST 2023
|
||||
#Fri Oct 13 08:36:54 CEST 2023
|
||||
SouthPanelHeight=635
|
||||
GameBoyErrorBreakpointMessage6=
|
||||
GameBoyErrorBreakpointMessage5=
|
||||
|
|
@ -46,7 +46,7 @@ GameBoyErrorBreakpointEnabled3=false
|
|||
Gamepad0Key5=-1
|
||||
GameBoyErrorBreakpointEnabled2=false
|
||||
Gamepad0Key4=-1
|
||||
WindowVideoViewerOpen=true
|
||||
WindowVideoViewerOpen=false
|
||||
GameBoyErrorBreakpointEnabled1=false
|
||||
Gamepad0Key3=-1
|
||||
GameBoyErrorBreakpointEnabled0=false
|
||||
|
|
@ -63,7 +63,7 @@ WindowEventViewerWindowY=489
|
|||
WindowEventViewerWindowX=1472
|
||||
WindowSpriteViewerHeight=527
|
||||
WindowSpriteViewerWidth=370
|
||||
DebuggerWestPanelSelectedTab=1
|
||||
DebuggerWestPanelSelectedTab=0
|
||||
WindowMemoryTracerWindowHeight=289
|
||||
Gamepad0Key37=-1
|
||||
Gamepad0Key36=-1
|
||||
|
|
@ -76,7 +76,7 @@ Gamepad0Key32=-1
|
|||
Gamepad0Key31=-1
|
||||
Gamepad0Key30=-1
|
||||
DebuggerSouthPanelSelectedTab=0
|
||||
StackWidth=940
|
||||
StackWidth=1311
|
||||
SMSGamepadAKeyboard=false
|
||||
GameBoyErrorBreakpointCondition19=
|
||||
GameBoyErrorBreakpointCondition18=
|
||||
|
|
@ -148,33 +148,33 @@ Gamepad1Key21=-1
|
|||
Gamepad1Key20=-1
|
||||
StackSplitLocation=320
|
||||
FontSize=13
|
||||
CombineVideoViewers=true
|
||||
WindowEmuliciousHeight=781
|
||||
CodeFontSize=13
|
||||
WindowEmuliciousHeight=781
|
||||
CombineVideoViewers=true
|
||||
WindowTilemapViewerY=544
|
||||
MemoryTracer=true
|
||||
GBGamepadKeyboard=false
|
||||
UninitializedMemoryBreakpointSuspend=true
|
||||
WindowTilemapViewerX=1013
|
||||
UninitializedMemoryBreakpointSuspend=true
|
||||
GBGamepadKeyboard=false
|
||||
MemoryTracer=true
|
||||
SMSGamepadBKeyboard=false
|
||||
DebuggerConsoleLogBreakpoints=true
|
||||
SMSGamepadBThreshold=50
|
||||
Gamepad1Key19=-1
|
||||
Gamepad1Key18=-1
|
||||
BankSwapAtPCBreakpointEnabled=false
|
||||
Gamepad1Key18=-1
|
||||
Gamepad1Key17=-1
|
||||
WindowPaletteViewerWidth=485
|
||||
Gamepad1Key16=-1
|
||||
Gamepad1Key15=-1
|
||||
Recent0=C\:\\workspace\\dmgtris\\bin\\out.gb
|
||||
WindowPaletteViewerWidth=485
|
||||
GameBoyErrorBreakpointSuspend32=true
|
||||
Recent0=C\:\\workspace\\dmgtris\\bin\\out.gb
|
||||
Gamepad1Key15=-1
|
||||
Gamepad1Key14=-1
|
||||
Gamepad1Key13=-1
|
||||
Gamepad1Key12=-1
|
||||
Gamepad1Key11=-1
|
||||
GameBoyErrorBreakpointSuspend9=true
|
||||
Gamepad1Key10=-1
|
||||
Gamepad1Key11=-1
|
||||
GameBoyErrorBreakpointSuspend8=true
|
||||
Gamepad1Key10=-1
|
||||
GameBoyErrorBreakpointSuspend7=true
|
||||
GameBoyErrorBreakpointSuspend6=true
|
||||
GameBoyErrorBreakpointSuspend5=true
|
||||
|
|
@ -184,73 +184,73 @@ GameBoyErrorBreakpointSuspend2=true
|
|||
GameBoyErrorBreakpointSuspend1=true
|
||||
GameBoyErrorBreakpointSuspend0=true
|
||||
Scale=5.0
|
||||
DebuggerMemorySelectedAddress=0
|
||||
DebuggerMemorySelectedAddress=390
|
||||
WindowEmuliciousWidth=816
|
||||
GameBoyErrorBreakpointSuspend20=true
|
||||
DataExecutionBreakpointCondition=
|
||||
GameBoyErrorBreakpointMessage32=
|
||||
BankSwapAtPCBreakpointCondition=
|
||||
WindowTilemapViewerWidth=404
|
||||
BankSwapAtPCBreakpointCondition=
|
||||
GameBoyErrorBreakpointMessage32=
|
||||
SMSbuttonsThreshold=50
|
||||
WindowTileViewerY=549
|
||||
Gamepad1Key9=-1
|
||||
WindowTileViewerX=271
|
||||
Gamepad1Key8=-1
|
||||
Gamepad1Key9=-1
|
||||
UninitializedMemoryBreakpointCondition=
|
||||
Gamepad1Key7=-1
|
||||
Gamepad1Key8=-1
|
||||
GameBoyErrorBreakpointSuspend19=true
|
||||
Gamepad1Key6=-1
|
||||
Gamepad1Key7=-1
|
||||
GameBoyErrorBreakpointSuspend18=true
|
||||
Gamepad1Key5=-1
|
||||
Gamepad1Key6=-1
|
||||
GameBoyErrorBreakpointSuspend17=true
|
||||
Gamepad1Key4=-1
|
||||
Gamepad1Key5=-1
|
||||
GameBoyErrorBreakpointSuspend16=true
|
||||
WindowVideoViewerY=275
|
||||
Gamepad1Key4=-1
|
||||
Gamepad1Key3=-1
|
||||
WindowVideoViewerX=946
|
||||
WindowVideoViewerY=275
|
||||
Gamepad1Key2=-1
|
||||
WindowVideoViewerX=946
|
||||
Gamepad1Key1=-1
|
||||
Gamepad1Key0=-1
|
||||
GameBoyErrorBreakpointSuspend10=true
|
||||
WindowTilemapViewerHeight=744
|
||||
WindowEventViewerWindowDivider=309
|
||||
WindowTilemapViewerHeight=744
|
||||
GameBoyErrorBreakpointMessage20=
|
||||
MemoryTracerDisplayFileOffsetsForROM=true
|
||||
WindowTileViewerWidth=467
|
||||
WindowDebuggerY=158
|
||||
WindowDebuggerX=939
|
||||
MemoryTracerDisplayFileOffsetsForROM=true
|
||||
WindowDebuggerY=189
|
||||
WindowDebuggerX=1113
|
||||
Key37=-1
|
||||
Key36=-1
|
||||
Key35=-1
|
||||
GameBoyErrorBreakpointCondition9=
|
||||
GameBoyErrorBreakpointEnabled32=false
|
||||
WindowTileViewerOpen=false
|
||||
Key34=-1
|
||||
GameBoyErrorBreakpointEnabled32=false
|
||||
GameBoyErrorBreakpointCondition9=
|
||||
Key35=-1
|
||||
GameBoyErrorBreakpointCondition8=
|
||||
Key33=-1
|
||||
GameBoyErrorBreakpointMessage19=
|
||||
Key34=-1
|
||||
GameBoyErrorBreakpointCondition7=
|
||||
Key32=-1
|
||||
GameBoyErrorBreakpointCondition6=
|
||||
GameBoyErrorBreakpointMessage18=
|
||||
GameBoyErrorBreakpointMessage19=
|
||||
Key33=-1
|
||||
DebuggerMemoryTabVisibleRect=0,0,0,0
|
||||
Key31=-1
|
||||
GameBoyErrorBreakpointCondition5=
|
||||
GameBoyErrorBreakpointMessage17=
|
||||
OutlineWidth=425
|
||||
GameBoyErrorBreakpointMessage18=
|
||||
GameBoyErrorBreakpointCondition6=
|
||||
Key32=-1
|
||||
WindowEventViewerWindowWidth=930
|
||||
Key30=-1
|
||||
GameBoyErrorBreakpointCondition4=
|
||||
OutlineWidth=425
|
||||
GameBoyErrorBreakpointMessage17=
|
||||
GameBoyErrorBreakpointCondition5=
|
||||
Key31=-1
|
||||
GameBoyErrorBreakpointMessage16=
|
||||
GameBoyErrorBreakpointCondition4=
|
||||
Key30=-1
|
||||
GameBoyErrorBreakpointCondition3=
|
||||
GameBoyErrorBreakpointCondition2=
|
||||
GameBoyErrorBreakpointCondition1=
|
||||
Key9=40
|
||||
GameBoyErrorBreakpointCondition0=
|
||||
GameBoyErrorBreakpointCondition1=
|
||||
Key8=38
|
||||
GameBoyErrorBreakpointCondition0=
|
||||
Key7=83
|
||||
Key6=87
|
||||
GameBoyErrorBreakpointMessage10=
|
||||
Key6=87
|
||||
Key5=65
|
||||
Key4=68
|
||||
Key3=10
|
||||
|
|
@ -262,21 +262,21 @@ Update=2
|
|||
Key29=-1
|
||||
Key28=10
|
||||
Key27=-1
|
||||
WindowSpriteViewerOpen=false
|
||||
Key26=-1
|
||||
WindowSpriteViewerOpen=false
|
||||
Key25=-1
|
||||
Key24=-1
|
||||
WindowTileViewerHeight=453
|
||||
Key23=10
|
||||
Key24=-1
|
||||
GameBoyErrorBreakpointEnabled20=false
|
||||
Key23=10
|
||||
Key22=-1
|
||||
Key21=-1
|
||||
Key20=-1
|
||||
BankSwapAtPCBreakpointSuspend=true
|
||||
WindowEmuliciousY=376
|
||||
WindowEmuliciousX=146
|
||||
DebuggerMemorySelectedTab=HRAM
|
||||
WindowDebuggerWidth=1110
|
||||
Key20=-1
|
||||
WindowEmuliciousY=489
|
||||
WindowEmuliciousX=666
|
||||
DebuggerMemorySelectedTab=RAM
|
||||
WindowDebuggerWidth=1481
|
||||
GameBoyErrorBreakpointMessage9=
|
||||
GameBoyErrorBreakpointMessage8=
|
||||
GameBoyErrorBreakpointMessage7=
|
||||
|
|
|
|||
Loading…
Reference in New Issue