mirror of
https://github.com/lscharen/iigs-game-engine.git
synced 2024-12-26 20:30:21 +00:00
Small initialization and jsr/jsl updates
This commit is contained in:
Lucas Scharenbroich
parent
4af66fa13a
commit
69c6104742
158
src/App.Main.s
158
src/App.Main.s
@ -17,8 +17,8 @@
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tiledata ext
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; Feature flags
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NO_INTERRUPTS equ 1 ; turn off for crossrunner debugging
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NO_MUSIC equ 1 ; turn music + tool loading off
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NO_INTERRUPTS equ 1 ; turn off for crossrunner debugging
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NO_MUSIC equ 1 ; turn music + tool loading off
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; Typical init
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phk
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@ -30,24 +30,25 @@ NO_MUSIC equ 1 ; turn music + tool loadi
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jsl SetScreenMode
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; Set up our level data
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jsr BG0SetUp
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jsr BG1SetUp
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; jsr BG0SetUp
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; jsr BG1SetUp
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; Allocate room to load data
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jsl AllocBank ; Alloc 64KB for Load/Unpack
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sta BankLoad ; Store "Bank Pointer"
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; jsl AllocBank ; Alloc 64KB for Load/Unpack
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; sta BankLoad ; Store "Bank Pointer"
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jsr MovePlayerToOrigin ; Put the player at the beginning of the map
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; jsr MovePlayerToOrigin ; Put the player at the beginning of the map
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lda #DIRTY_BIT_BG0_REFRESH ; Redraw all of the tiles on the next Render
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ora #DIRTY_BIT_BG1_REFRESH
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tsb DirtyBits
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; lda #DIRTY_BIT_BG0_REFRESH ; Redraw all of the tiles on the next Render
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; ora #DIRTY_BIT_BG1_REFRESH
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; tsb DirtyBits
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; lda #$FFFF
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jsl Render
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EvtLoop
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jsl ReadControl
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and #$007F ; Ignore the buttons for now
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and #$007F ; Ignore the buttons for now
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cmp #'q'
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bne :1
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@ -68,17 +69,17 @@ EvtLoop
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jsr DumpBanks
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bra EvtLoop
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:3 cmp #'f' ; render a 'f'rame
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:3 cmp #'f' ; render a 'f'rame
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bne :4
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jsl Render
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bra EvtLoop
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:4 cmp #'h' ; Show the 'h'eads up display
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:4 cmp #'h' ; Show the 'h'eads up display
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bne :5
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jsr DoHUP
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bra EvtLoop
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:5 cmp #'1' ; User selects a new screen size
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:5 cmp #'1' ; User selects a new screen size
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bcc :6
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cmp #'9'+1
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bcs :6
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@ -86,7 +87,7 @@ EvtLoop
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sbc #'1'
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tax
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jsl SetScreenMode
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jsr MovePlayerToOrigin
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; jsr MovePlayerToOrigin
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brl EvtLoop
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:6 cmp #'t'
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@ -94,7 +95,7 @@ EvtLoop
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jsr DoTiles
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brl EvtLoop
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:7 cmp #$15 ; left = $08, right = $15, up = $0B, down = $0A
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:7 cmp #$15 ; left = $08, right = $15, up = $0B, down = $0A
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bne :8
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lda #1
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jsr MoveRight
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@ -150,13 +151,13 @@ StartMusic
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pea #MusicFile
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_NTPLoadOneMusic
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pea $0001 ; loop
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pea $0001 ; loop
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_NTPPlayMusic
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rts
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; Position the screen with the botom-left corner of the tilemap visible
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MovePlayerToOrigin
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lda #0 ; Set the player's position
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lda #0 ; Set the player's position
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jsl SetBG0XPos
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lda #0
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jsl SetBG1XPos
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@ -198,8 +199,8 @@ DoHUP
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ldx #{160-12*4}
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ldy #$7777
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jsr DrawString
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lda OneSecondCounter ; Number of elapsed seconds
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ldx #{160-4*4} ; Render the word 4 charaters from right edge
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lda OneSecondCounter ; Number of elapsed seconds
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ldx #{160-4*4} ; Render the word 4 charaters from right edge
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jsr DrawWord
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lda #TicksStr
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@ -220,7 +221,7 @@ DoTiles
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:column equ 3
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:tile equ 5
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pea $0000 ; Allocate local variable space
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pea $0000 ; Allocate local variable space
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pea $0000
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pea $0000
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@ -250,7 +251,7 @@ DoTiles
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cmp #26
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bcc :rowloop
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pla ; restore the stack
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pla ; restore the stack
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pla
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pla
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rts
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@ -264,7 +265,7 @@ DoLoadBG1
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ldx BankLoad
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lda #0
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ldy BG1DataBank
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jsr CopyBinToBG1
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jsl CopyBinToBG1
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lda BankLoad
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ldx #BG1AltDataFile
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@ -273,7 +274,7 @@ DoLoadBG1
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ldx BankLoad
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lda #0
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ldy BG1AltBank
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jsr CopyBinToBG1
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jsl CopyBinToBG1
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rts
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@ -283,18 +284,18 @@ DoLoadFG
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ldx #FGName
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jsr LoadFile
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ldx BankLoad ; Copy it into the code field
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ldx BankLoad ; Copy it into the code field
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lda #0
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jsr CopyBinToField
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jsl CopyBinToField
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rts
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; Load a simple picture format onto the SHR screen
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DoLoadPic
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lda BankLoad
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ldx #ImageName ; Load+Unpack Boot Picture
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jsr LoadPicture ; X=Name, A=Bank to use for loading
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ldx #ImageName ; Load+Unpack Boot Picture
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jsr LoadPicture ; X=Name, A=Bank to use for loading
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ldx BankLoad ; Copy it into the code field
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ldx BankLoad ; Copy it into the code field
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lda #0
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jsl CopyPicToField
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rts
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@ -335,43 +336,43 @@ DefaultPalette dw $0E51,$0EDB,$0000,$068F,$0BF1,$00A0,$0EEE,$0777,$
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; Graphics helpers
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LoadPicture
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jsr LoadFile ; X=Nom Image, A=Banc de chargement XX/00
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jsr LoadFile ; X=Nom Image, A=Banc de chargement XX/00
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bcc :loadOK
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rts
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:loadOK
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jsr UnpackPicture ; A=Packed Size
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jsr UnpackPicture ; A=Packed Size
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rts
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UnpackPicture sta UP_PackedSize ; Size of Packed Data
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lda #$8000 ; Size of output Data Buffer
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UnpackPicture sta UP_PackedSize ; Size of Packed Data
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lda #$8000 ; Size of output Data Buffer
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sta UP_UnPackedSize
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lda BankLoad ; Banc de chargement / Decompression
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sta UP_Packed+1 ; Packed Data
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lda BankLoad ; Banc de chargement / Decompression
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sta UP_Packed+1 ; Packed Data
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clc
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adc #$0080
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stz UP_UnPacked ; On remet a zero car modifie par l'appel
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stz UP_UnPacked ; On remet a zero car modifie par l'appel
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stz UP_UnPacked+2
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sta UP_UnPacked+1 ; Unpacked Data buffer
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sta UP_UnPacked+1 ; Unpacked Data buffer
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PushWord #0 ; Space for Result : Number of bytes unpacked
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PushLong UP_Packed ; Pointer to buffer containing the packed data
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PushWord UP_PackedSize ; Size of the Packed Data
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PushLong #UP_UnPacked ; Pointer to Pointer to unpacked buffer
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PushLong #UP_UnPackedSize ; Pointer to a Word containing size of unpacked data
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PushWord #0 ; Space for Result : Number of bytes unpacked
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PushLong UP_Packed ; Pointer to buffer containing the packed data
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PushWord UP_PackedSize ; Size of the Packed Data
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PushLong #UP_UnPacked ; Pointer to Pointer to unpacked buffer
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PushLong #UP_UnPackedSize ; Pointer to a Word containing size of unpacked data
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_UnPackBytes
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pla ; Number of byte unpacked
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pla ; Number of byte unpacked
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rts
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UP_Packed hex 00000000 ; Address of Packed Data
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UP_PackedSize hex 0000 ; Size of Packed Data
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UP_UnPacked hex 00000000 ; Address of Unpacked Data Buffer (modified)
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UP_UnPackedSize hex 0000 ; Size of Unpacked Data Buffer (modified)
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UP_Packed hex 00000000 ; Address of Packed Data
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UP_PackedSize hex 0000 ; Size of Packed Data
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UP_UnPacked hex 00000000 ; Address of Unpacked Data Buffer (modified)
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UP_UnPackedSize hex 0000 ; Size of Unpacked Data Buffer (modified)
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; Basic I/O function to load files
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LoadFile
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stx openRec+4 ; X=File, A=Bank (high word) assumed zero for low
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stx openRec+4 ; X=File, A=Bank (high word) assumed zero for low
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stz readRec+4
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sta readRec+6
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jsr ClearBankLoad
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@ -393,7 +394,7 @@ LoadFile
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:closeFile _CloseGS closeRec
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clc
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lda eofRec+4 ; File Size
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lda eofRec+4 ; File Size
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rts
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:openReadErr jsr :closeFile
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@ -426,22 +427,22 @@ BG1AltDataFile strl '1/bg1b.bin'
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ImageName strl '1/test.pic'
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FGName strl '1/fg1.bin'
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openRec dw 2 ; pCount
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ds 2 ; refNum
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adrl FGName ; pathname
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openRec dw 2 ; pCount
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ds 2 ; refNum
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adrl FGName ; pathname
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eofRec dw 2 ; pCount
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ds 2 ; refNum
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ds 4 ; eof
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eofRec dw 2 ; pCount
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ds 2 ; refNum
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ds 4 ; eof
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readRec dw 4 ; pCount
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ds 2 ; refNum
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ds 4 ; dataBuffer
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ds 4 ; requestCount
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ds 4 ; transferCount
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readRec dw 4 ; pCount
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ds 2 ; refNum
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ds 4 ; dataBuffer
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ds 4 ; requestCount
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ds 4 ; transferCount
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closeRec dw 1 ; pCount
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ds 2 ; refNum
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closeRec dw 1 ; pCount
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ds 2 ; refNum
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qtRec adrl $0000
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da $00
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@ -453,36 +454,3 @@ qtRec adrl $0000
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PUT App.TileMapBG0.s
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PUT App.TileMapBG1.s
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11
src/Core.s
11
src/Core.s
@ -45,9 +45,15 @@ EngineStartUp ENT
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rtl
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EngineShutDown ENT
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phb
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phk
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plb
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jsr IntShutDown
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jsr SoundShutDown
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jsr ToolShutDown
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plb
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rtl
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ToolStartUp
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@ -221,6 +227,11 @@ EngineReset
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stz TileMapPtr
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stz TileMapPtr+2
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stz BG1TileMapWidth
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stz BG1TileMapHeight
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stz BG1TileMapPtr
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stz BG1TileMapPtr+2
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stz OneSecondCounter
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]step equ 0
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10
src/Defs.s
10
src/Defs.s
@ -108,13 +108,3 @@ DIRTY_BIT_BG1_X equ $0004
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DIRTY_BIT_BG1_Y equ $0008
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DIRTY_BIT_BG0_REFRESH equ $0010
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DIRTY_BIT_BG1_REFRESH equ $0020
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@ -121,7 +121,3 @@ WaitForVBL sep #$20
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bpl :wait2 ; spin until transition into VBL
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rep #$20
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rts
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30
src/Render.s
30
src/Render.s
@ -84,8 +84,6 @@ _Render
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jsr _ApplyBG0XPos ; Patch the PEA instructions with exit BRA opcode
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jsr _ApplyBG1XPos ; Patch the PEA instructions with exit BRA opcode
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; Copy any tiles that have come into view
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; The code fields are locked in now and reder to be rendered
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jsr ShadowOff
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@ -126,31 +124,3 @@ _Render
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stz DirtyBits
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rts
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@ -49,6 +49,12 @@ _UpdateBG0TileMap
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:BlkX equ tmp12
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:BlkY equ tmp13
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lda TileMapPtr ; Do nothing if no data is set
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ora TileMapPtr+2
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bne :valid
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rts
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:valid
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lda StartY ; calculate the tile index of the current location
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lsr
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lsr
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@ -390,6 +396,12 @@ _UpdateBG1TileMap
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:Top equ tmp2
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:Bottom equ tmp3
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lda BG1TileMapPtr ; Do nothing if no data is set
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ora BG1TileMapPtr+2
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bne :valid
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rts
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:valid
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lda BG1StartY ; calculate the tile index of the current location
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lsr
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lsr
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@ -648,19 +660,3 @@ _DrawRectBG1
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pla
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rts
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@ -62,6 +62,7 @@ InitTimers
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; A = timer slot ID if C = 0
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AddTimer ENT
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phb
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php ; Save the input parameters
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phx
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pha
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@ -135,6 +136,7 @@ RemoveTimer ENT
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:exit
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plb
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rtl
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; Execute the timer functions
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DoTimers ENT
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phb
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@ -241,5 +243,6 @@ _DoTimers
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@ -1,7 +1,7 @@
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; Support routinges for the primary background
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_InitBG0
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jsr _ApplyBG0YPos
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jsr _ApplyBG0XPos
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lda #DIRTY_BIT_BG0_X+DIRTY_BIT_BG0_Y
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tsb DirtyBits
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rts
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; Copy a raw data file into the code field
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@ -53,7 +53,7 @@ _CopyBinToField
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stz :line_cnt
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:rloop
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lda :line_cnt ; get the pointer to the code field line
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lda :line_cnt ; get the pointer to the code field line
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asl
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tax
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@ -63,90 +63,88 @@ _CopyBinToField
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sta :dstptr+2
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; ldx #162 ; move backwards in the code field
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ldy #0 ; move forward in the image data
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ldy #0 ; move forward in the image data
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lda #82 ; keep a running column count
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lda #82 ; keep a running column count
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sta :col_cnt
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:cloop
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phy
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lda [:srcptr],y ; load the picture data
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lda [:srcptr],y ; load the picture data
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cmp :mask_color
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beq :transparent ; a value of $0000 is transparent
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beq :transparent ; a value of $0000 is transparent
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jsr :toMask ; Infer a mask value for this. If it's $0000, then
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jsr :toMask ; Infer a mask value for this. If it's $0000, then
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cmp #$0000
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bne :mixed ; the data is solid, otherwise mixed
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bne :mixed ; the data is solid, otherwise mixed
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; This is a solid word
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:solid
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lda [:srcptr],y
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pha ; Save the data
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pha ; Save the data
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lda Col2CodeOffset,y ; Get the offset to the code from the line start
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lda Col2CodeOffset,y ; Get the offset to the code from the line start
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tay
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lda #$00F4 ; PEA instruction
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lda #$00F4 ; PEA instruction
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sta [:dstptr],y
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iny
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pla
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sta [:dstptr],y ; PEA operand
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sta [:dstptr],y ; PEA operand
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bra :next
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:transparent
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lda :mask_color ; Make sure we actually have to mask
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lda :mask_color ; Make sure we actually have to mask
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cmp #$A5A5
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beq :solid
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lda Col2CodeOffset,y ; Get the offset to the code from the line start
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lda Col2CodeOffset,y ; Get the offset to the code from the line start
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tay
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lda #$B1 ; LDA (dp),y
|
||||
lda #$B1 ; LDA (dp),y
|
||||
sta [:dstptr],y
|
||||
iny
|
||||
lda 1,s ; load the saved Y-index
|
||||
ora #$4800 ; put a PHA after the offset
|
||||
lda 1,s ; load the saved Y-index
|
||||
ora #$4800 ; put a PHA after the offset
|
||||
sta [:dstptr],y
|
||||
bra :next
|
||||
|
||||
:mixed
|
||||
sta :mask ; Save the mask
|
||||
lda [:srcptr],y ; Refetch the screen data
|
||||
sta :mask ; Save the mask
|
||||
lda [:srcptr],y ; Refetch the screen data
|
||||
sta :data
|
||||
|
||||
tyx
|
||||
lda Col2CodeOffset,y ; Get the offset into the code field
|
||||
lda Col2CodeOffset,y ; Get the offset into the code field
|
||||
tay
|
||||
lda #$4C ; JMP exception
|
||||
lda #$4C ; JMP exception
|
||||
sta [:dstptr],y
|
||||
iny
|
||||
|
||||
lda JTableOffset,x ; Get the address offset and add to the base address
|
||||
lda JTableOffset,x ; Get the address offset and add to the base address
|
||||
clc
|
||||
adc :dstptr
|
||||
sta [:dstptr],y
|
||||
|
||||
ldy JTableOffset,x ; This points to the code fragment
|
||||
lda 1,s ; load the offset
|
||||
ldy JTableOffset,x ; This points to the code fragment
|
||||
lda 1,s ; load the offset
|
||||
xba
|
||||
ora #$00B1
|
||||
sta [:dstptr],y ; write the LDA (--),y instruction
|
||||
sta [:dstptr],y ; write the LDA (--),y instruction
|
||||
iny
|
||||
iny
|
||||
iny ; advance to the AND #imm operand
|
||||
iny ; advance to the AND #imm operand
|
||||
lda :mask
|
||||
sta [:dstptr],y
|
||||
iny
|
||||
iny
|
||||
iny ; advance to the ORA #imm operand
|
||||
iny ; advance to the ORA #imm operand
|
||||
lda :mask
|
||||
eor #$FFFF ; invert the mask to clear up the data
|
||||
eor #$FFFF ; invert the mask to clear up the data
|
||||
and :data
|
||||
sta [:dstptr],y
|
||||
|
||||
:next
|
||||
ply
|
||||
|
||||
; dex
|
||||
; dex
|
||||
iny
|
||||
iny
|
||||
|
||||
@ -167,10 +165,10 @@ _CopyBinToField
|
||||
:exit
|
||||
rts
|
||||
|
||||
:toMask pha ; save original
|
||||
:toMask pha ; save original
|
||||
|
||||
lda 1,s
|
||||
eor :mask_color ; only identical bits produce zero
|
||||
eor :mask_color ; only identical bits produce zero
|
||||
and #$F000
|
||||
beq *+7
|
||||
pea #$0000
|
||||
@ -212,7 +210,7 @@ _CopyBinToField
|
||||
sta 1,s
|
||||
pla
|
||||
|
||||
sta 1,s ; pop the saved word
|
||||
sta 1,s ; pop the saved word
|
||||
pla
|
||||
rts
|
||||
|
||||
@ -245,7 +243,7 @@ _CopyPicToField
|
||||
|
||||
stz :line_cnt
|
||||
:rloop
|
||||
lda :line_cnt ; get the pointer to the code field line
|
||||
lda :line_cnt ; get the pointer to the code field line
|
||||
asl
|
||||
tax
|
||||
|
||||
@ -255,76 +253,76 @@ _CopyPicToField
|
||||
sta :dstptr+2
|
||||
|
||||
; ldx #162 ; move backwards in the code field
|
||||
ldy #0 ; move forward in the image data
|
||||
ldy #0 ; move forward in the image data
|
||||
|
||||
lda #80 ; keep a running column count
|
||||
lda #80 ; keep a running column count
|
||||
; lda #82 ; keep a running column count
|
||||
sta :col_cnt
|
||||
|
||||
:cloop
|
||||
phy
|
||||
lda [:srcptr],y ; load the picture data
|
||||
beq :transparent ; a value of $0000 is transparent
|
||||
lda [:srcptr],y ; load the picture data
|
||||
beq :transparent ; a value of $0000 is transparent
|
||||
|
||||
jsr :toMask ; Infer a mask value for this. If it's $0000, then
|
||||
bne :mixed ; the data is solid, otherwise mixed
|
||||
jsr :toMask ; Infer a mask value for this. If it's $0000, then
|
||||
bne :mixed ; the data is solid, otherwise mixed
|
||||
|
||||
; This is a solid word
|
||||
lda [:srcptr],y
|
||||
pha ; Save the data
|
||||
pha ; Save the data
|
||||
|
||||
lda Col2CodeOffset,y ; Get the offset to the code from the line start
|
||||
lda Col2CodeOffset,y ; Get the offset to the code from the line start
|
||||
tay
|
||||
|
||||
lda #$00F4 ; PEA instruction
|
||||
lda #$00F4 ; PEA instruction
|
||||
sta [:dstptr],y
|
||||
iny
|
||||
pla
|
||||
sta [:dstptr],y ; PEA operand
|
||||
sta [:dstptr],y ; PEA operand
|
||||
bra :next
|
||||
:transparent
|
||||
lda Col2CodeOffset,y ; Get the offset to the code from the line start
|
||||
lda Col2CodeOffset,y ; Get the offset to the code from the line start
|
||||
tay
|
||||
|
||||
lda #$B1 ; LDA (dp),y
|
||||
lda #$B1 ; LDA (dp),y
|
||||
sta [:dstptr],y
|
||||
iny
|
||||
lda 1,s ; load the saved Y-index
|
||||
ora #$4800 ; put a PHA after the offset
|
||||
lda 1,s ; load the saved Y-index
|
||||
ora #$4800 ; put a PHA after the offset
|
||||
sta [:dstptr],y
|
||||
bra :next
|
||||
|
||||
:mixed
|
||||
sta :mask ; Save the mask
|
||||
lda [:srcptr],y ; Refetch the screen data
|
||||
sta :mask ; Save the mask
|
||||
lda [:srcptr],y ; Refetch the screen data
|
||||
sta :data
|
||||
|
||||
tyx
|
||||
lda Col2CodeOffset,y ; Get the offset into the code field
|
||||
lda Col2CodeOffset,y ; Get the offset into the code field
|
||||
tay
|
||||
|
||||
lda #$4C ; JMP exception
|
||||
lda #$4C ; JMP exception
|
||||
sta [:dstptr],y
|
||||
iny
|
||||
|
||||
lda JTableOffset,x ; Get the address offset and add to the base address
|
||||
lda JTableOffset,x ; Get the address offset and add to the base address
|
||||
clc
|
||||
adc :dstptr
|
||||
sta [:dstptr],y
|
||||
|
||||
ldy JTableOffset,x ; This points to the code fragment
|
||||
lda 1,s ; load the offset
|
||||
ldy JTableOffset,x ; This points to the code fragment
|
||||
lda 1,s ; load the offset
|
||||
xba
|
||||
ora #$00B1
|
||||
sta [:dstptr],y ; write the LDA (--),y instruction
|
||||
sta [:dstptr],y ; write the LDA (--),y instruction
|
||||
iny
|
||||
iny
|
||||
iny ; advance to the AND #imm operand
|
||||
iny ; advance to the AND #imm operand
|
||||
lda :mask
|
||||
sta [:dstptr],y
|
||||
iny
|
||||
iny
|
||||
iny ; advance to the ORA #imm operand
|
||||
iny ; advance to the ORA #imm operand
|
||||
lda :data
|
||||
sta [:dstptr],y
|
||||
|
||||
@ -379,8 +377,3 @@ _CopyPicToField
|
||||
bra *+5
|
||||
ora #$000F
|
||||
rts
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
@ -95,4 +95,3 @@ stk_save lda #0000 ; load the stack
|
||||
; we don't do anything sprite related; just call function pointers provided to us.
|
||||
_RenderSprites
|
||||
rts
|
||||
|
||||
|
||||
@ -345,7 +345,6 @@ _ApplyBG0XPos
|
||||
; Special note, the SaveOpcode function stores the opcode *within* the code field as it is
|
||||
; used in odd-aligned cases to determine how to draw the 8-bit value on the left edge of the
|
||||
; screen
|
||||
|
||||
; y is already set to :base_address
|
||||
tax ; :draw_count_x2
|
||||
lda :exit_address ; Save from this location
|
||||
|
||||
@ -637,14 +637,3 @@ snippets lup 82
|
||||
]index equ ]index+1
|
||||
--^
|
||||
top
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user