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- ;-------T-------T------------------------T----------------------------------;
- ;Name: Green Fade
- ;Author: Paul Manias
- ;Copyright: DreamWorld Productions (c) 1996-1997. Freely distributable.
- ;
- ;Fades in a 32 colour picture, then up to a specified colour (greenish
- ;yellow), and then out to black. Press left mouse button to exit.
-
- INCDIR "INCLUDES:"
- INCLUDE "dpkernel/dpkernel.i"
-
- SECTION "Demo",CODE
-
- ;===========================================================================;
- ; INITIALISE DEMO
- ;===========================================================================;
-
- STARTDPK
-
- Start: MOVEM.L A0-A6/D1-D7,-(SP)
- move.l DPKBase(pc),a6
- lea FilePic(pc),a0
- moveq #ID_PICTURE,d0
- CALL Load
- move.l d0,Picture
- beq.s .Exit
-
- moveq #ID_SCREEN,d0
- CALL Get
- move.l d0,Screen
- beq.s .Exit
-
- move.l Picture(pc),a0
- move.l Screen(pc),a1
- move.l PIC_Bitmap(a0),a2
- move.l BMP_Data(a2),GS_MemPtr1(a1)
- CALL CopyStructure
-
- move.l Screen(pc),a0
- clr.l GS_Palette(a0)
- move.l #BLANKPALETTE,GS_Attrib(a0)
- sub.l a1,a1
- CALL Init
- tst.l d0
- beq.s .Exit
-
- move.l Screen(pc),a0
- CALL Display
-
- bsr.s Main
-
- .Exit move.l DPKBase(pc),a6
- move.l Screen(pc),a0
- CALL Free
- move.l Picture(pc),a0
- CALL Free
- MOVEM.L (SP)+,A0-A6/D1-D7
- moveq #ERR_OK,d0
- rts
-
- ;===========================================================================;
- ; MAIN CODE
- ;===========================================================================;
-
- Main: moveq #$00,d7 ;d7 = FadeState
- move.l Screen(pc),a0 ;a0 = Screen
- move.l GS_Bitmap(a0),a5
-
- move.l SCRBase(pc),a6
- .f_in CALL scrWaitAVBL
- move.l Screen(pc),a0 ;a0 = Screen
- moveq #5,d1 ;d1 = Speed of fade.
- move.l Picture(pc),a1 ;a1 = Picture structure.
- move.l PIC_Palette(a1),a1 ;a1 = Palette to fade to.
- addq.w #8,a1
- moveq #$000000,d2 ;d2 = Fading from black.
- moveq #00,d3 ;d3 = Start colour.
- move.l BMP_AmtColours(a5),d4 ;d4 = Amount of colours.
- move.w d7,d0
- CALL scrColourToPalette ;Do the fade routine.
- move.w d0,d7 ;Has the fade finished yet?
- bne.s .f_in ;If not, keep doing it.
-
- moveq #$00,d7 ;d7 = FadeState
- .f_mid CALL scrWaitAVBL
- move.l Screen(pc),a0 ;a0 = Screen
- moveq #2,d1 ;d1 = Speed of fade.
- move.l Picture(pc),a1 ;a1 = Picture structure.
- move.l PIC_Palette(a1),a1 ;a1 = Palette we are fading from.
- addq.w #8,a1
- move.l #$75F343,d2 ;d2 = Colour we are fading to.
- move.w d7,d0
- CALL scrPaletteToColour ;Do the fade routine.
- move.w d0,d7 ;Has the fade finished yet?
- bne.s .f_mid ;If not, keep doing it.
-
- moveq #$00,d7
- .f_out CALL scrWaitAVBL
- move.l Screen(pc),a0 ;a0 = Screen
- move.l Picture(pc),a1 ;a1 = Picture structure.
- move.l PIC_Palette(a1),a1 ;a1 = Palette we are fading from.
- addq.w #8,a1
- moveq #2,d1 ;d1 = Speed of fade.
- move.l #$a5F343,d2 ;d2 = Colour.
- moveq #$000000,d5 ;d5 = Colour.
- move.w d7,d0
- CALL scrColourMorph ;Do the fade routine.
- move.w d0,d7 ;Has the fade finished yet?
- bne.s .f_out ;If not, keep doing it.
- rts
-
- ;===========================================================================;
- ; DATA
- ;===========================================================================;
-
- Screen: dc.l 0
- Picture: dc.l 0
- FilePic: FILENAME "GMS:demos/data/PIC.Loading"
-
- ;===========================================================================;
-
- ProgName: dc.b "Green Fade",0
- ProgAuthor: dc.b "Paul Manias",0
- ProgDate: dc.b "10 December 1997",0
- ProgCopyright: dc.b "DreamWorld Productions (c) 1996-1997. Freely distributable.",0
- ProgShort: dc.b "Fading demonstration.",0
- even
-
-