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agafade.s
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1996-07-16
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4KB
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134 lines
;AGA Picture
;-----------
;Fades in a 32 colour AGA picture (24 bit colour). And then fades it out.
;
;Press left mouse button to exit.
opt o+
INCLUDE "exec/exec_lib.i"
INCLUDE "games/games_lib.i"
INCLUDE "games/games.i
CALL MACRO
jsr _LVO\1(a6)
ENDM
LOCAL = 0
SECTION "AGA_Screen",CODE
;===========================================================================;
; INITIALISE DEMO
;===========================================================================;
Start: MOVEM.L A0-A6/D1-D7,-(SP)
move.l ($4).w,a6
lea GMS_Name(pc),a1
moveq #$00,d0
CALL OpenLibrary
move.l d0,GMS_Base
beq.s Quit
move.l GMS_Base(pc),a6 ;Initialise our screen.
lea ScreenStruct(pc),a0
CALL Add_Screen
tst.l d0
bne.s Error
move.l SS_MemPtr1(a0),a1 ;Destination = SS_MemPtr1.
lea PackedPicFile(pc),a0 ;File Name.
CALL QuickLoad
tst.l d0
beq.s Error
lea ScreenStruct(pc),a0 ;Unpack the data on top of itself.
move.l SS_MemPtr1(a0),a1
move.l a1,a0
moveq #$00,d0
CALL SmartUnpack
lea ScreenStruct(pc),a0 ;Now show the screen/pic.
CALL Show_Screen
;===========================================================================;
; MAIN CODE
;===========================================================================;
.FadeIn CALL Wait_OSVBL
moveq #1,d0 ;d0 = Speed of fade.
lea ScreenPalette(pc),a1
CALL B24_FadeToPalette ;Do the fade routine.
tst.w d0 ;Has the fade finished yet?
bne.s .FadeIn ;If not, keep doing it.
CALL Wait_LMB
.FadeOut
CALL Wait_OSVBL
moveq #2,d0 ;d0 = Speed of fade.
CALL B24_FadeToBlack ;Do the fade routine.
tst.w d0 ;Has the fade finished yet?
bne.s .FadeOut ;If not, keep doing it.
;===========================================================================;
; RETURN TO DOS
;===========================================================================;
CALL Delete_Screen ;Give back screen memory etc.
Error move.l ($4).w,a6
move.l GMS_Base(pc),a1
CALL CloseLibrary
Quit MOVEM.L (SP)+,A0-A6/D1-D7
moveq #$00,d0
rts
;===========================================================================;
; DATA
;===========================================================================;
GMS_Name:
dc.b "games.library",0
even
GMS_Base:
dc.l 0
AMT_PLANES = 5
ScreenStruct:
dc.l "GSV1"
dc.l 0,0,0 ;Screen_Mem1/2/3
dc.l 0 ;Screen link.
dc.l 0 ;ScreenPalette ;Address of palette.
dc.l 0 ;Address of rasterlist.
dc.l 0 ;Amt of colours in palette.
dc.w 256,320,320/8 ;Screen Height, Width, Width/8
dc.w 256,320,320/8 ;Pic Height, Width, Width/8
dc.w AMT_PLANES ;Amt of planes.
dc.w 0,0 ;Top of screen offsets, X/Y
dc.w 0 ;Scroll buffer in pixels/8.
dc.w 0,0 ;X/Y counters (for scrolling).
dc.l NOBURST ;Special attributes.
dc.w LORES|_24BITCOL ;Screen mode.
dc.b INTERLEAVED ;Screen type
dc.b 0 ;Screen Is Being Displayed?
dc.l 0,0 ;Reserved area.
even
ScreenPalette:
dc.l $000000,$080808,$101010,$191919
dc.l $212121,$292929,$313131,$3A3A3A
dc.l $424242,$4A4A4A,$525252,$5A5A5A
dc.l $636363,$6B6B6B,$737373,$7B7B7B
dc.l $848484,$8C8C8C,$949494,$9C9C9C
dc.l $A5A5A5,$ADADAD,$B5B5B5,$BDBDBD
dc.l $C5C5C5,$CECECE,$D6D6D6,$7F7F7F
dc.l $9B9B9B,$707070,$444444,$1E1E1E
PackedPicFile:
IFNE LOCAL
dc.b "GAMESLIB:Demos/"
ENDC
dc.b "data/AGAPic32.pak",0
even