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- ;-------T-------T------------------------T----------------------------------;
- ;AGA Palette Morph
- ;-----------------
- ;Fades in a 32 colour AGA picture (24 bit colour). Then fades it into
- ;a second purple palette, and then out to black.
- ;
- ;Press left mouse button to exit.
-
- INCDIR "INCLUDES:"
- INCLUDE "games/games_lib.i"
- INCLUDE "games/games.i"
-
- CALL MACRO
- jsr _LVO\1(a6)
- ENDM
-
- SECTION "AGAFade",CODE
-
- ;===========================================================================;
- ; INITIALISE DEMO
- ;===========================================================================;
-
- STARTGMS
-
- Start: MOVEM.L A0-A6/D1-D7,-(SP)
- move.l GMSBase(pc),a6
- lea ScreenTags(pc),a0
- CALL AddScreen
- tst.l d0
- beq.s .Error_Screen
-
- move.l Screen(pc),a0
- lea PictureTags(pc),a1
- move.l GS_MemPtr1(a0),PicData
- CALL LoadPic
- tst.l d0
- beq.s .Error_Picture
-
- CALL ShowScreen
-
- bsr.s Main
-
- .ReturnToDOS
- move.l GMSBase(pc),a6
- move.l Picture(pc),a1
- CALL FreePic
- .Error_Picture
- move.l Screen(pc),a0
- CALL DeleteScreen
- .Error_Screen
- MOVEM.L (SP)+,A0-A6/D1-D7
- moveq #ERR_OK,d0
- rts
-
- ;===========================================================================;
- ; MAIN CODE
- ;===========================================================================;
-
- Main: move.l Screen(pc),a0
- move.l Picture(pc),a1
- move.l PIC_Palette(a1),a1 ;a1 = Palette to fade to.
- moveq #$00,d0 ;d0 = FadeState
- moveq #5,d1 ;d1 = Speed of fade.
- moveq #$000000,d2
- moveq #00,d3
- move.l GS_AmtColours(a0),d4
- .f_in CALL WaitVBL
- CALL ColourToPalette ;Do the fade routine.
- tst.w d0 ;Has the fade finished yet?
- bne.s .f_in ;If not, keep doing it.
-
- moveq #50,d0
- CALL WaitTime
-
- moveq #$00,d0 ;d0 = FadeState
- moveq #2,d1 ;d1 = Speed of fade.
- lea MorphPalette(pc),a2 ;a2 = Destination Palette.
- .f_mid CALL WaitVBL
- CALL PaletteMorph ;Do the fade routine.
- tst.w d0 ;Has the fade finished yet?
- bne.s .f_mid ;If not, keep doing it.
-
- moveq #50,d0
- CALL WaitTime
-
- moveq #$00,d0 ;d0 = FadeState
- moveq #2,d1 ;d1 = Speed of fade.
- lea MorphPalette(pc),a1
- moveq #$000000,d2
- .f_out CALL WaitVBL
- CALL PaletteToColour ;Do the fade routine.
- tst.w d0 ;Has the fade finished yet?
- bne.s .f_out ;If not, keep doing it.
-
- moveq #50,d0
- CALL WaitTime
- rts
-
- ;===========================================================================;
- ; DATA
- ;===========================================================================;
-
- ScreenTags:
- dc.l TAGS_GAMESCREEN
- Screen: dc.l 0
- dc.l GSA_AmtColours,32
- dc.l GSA_ScrWidth,320
- dc.l GSA_ScrHeight,256
- dc.l GSA_Planes,5
- dc.l GSA_ScrMode,LORES
- dc.l TAGEND
-
- MorphPalette:
- dc.l $000000,$0A0107,$14020E,$1D0314
- dc.l $27041B,$310522,$3B0629,$45082F
- dc.l $4E0936,$580A3D,$620B44,$6C0C4A
- dc.l $760D51,$800E58,$890F5F,$931066
- dc.l $9D116C,$A71273,$B1137A,$BA1481
- dc.l $C41687,$CE178E,$D81895,$E2199C
- dc.l $EB1AA2,$F51BA9,$FF1CB0,$D71C9F
- dc.l $557D55,$707082,$443300,$1E1E1E
-
- PictureTags:
- dc.l TAGS_PICTURE
- Picture dc.l 0
- dc.l PCA_Data
- PicData dc.l 0
- dc.l PCA_Width,320
- dc.l PCA_Height,256
- dc.l PCA_Planes,5
- dc.l PCA_AmtColours,32
- dc.l PCA_ScrMode,LORES
- dc.l PCA_Options,GETPALETTE
- dc.l PCA_File,.file
- dc.l TAGEND
- .file dc.b "GMS:demos/data/PIC.Loading",0
- even
-