home *** CD-ROM | disk | FTP | other *** search
- ;-------T-------T------------------------T----------------------------------;
- ;Bouncing BOB's Demo
- ;-------------------
- ;This is a demonstration of bouncing bobs, an extension of the original
- ;Raining BOBs demo.
- ;
- ;It runs in high-resolution + lace with a total of 35 16x16 bobs at 50 FPS
- ;('020+FAST).
-
- INCDIR "INCLUDES:"
- INCLUDE "games/games_lib.i"
- INCLUDE "games/games.i"
-
- CALL MACRO
- jsr _LVO\1(a6)
- ENDM
-
- MAX_IMAGES = 35
-
- SECTION "BouncingBOBs",CODE
-
- ;===========================================================================;
- ; INITIALISE DEMO
- ;===========================================================================;
-
- STARTGMS
-
- Start: MOVEM.L A0-A6/D1-D7,-(SP)
- move.l GMSBase(pc),a6
- CALL AllocBlitter
- tst.l d0
- bne .Error_Blitter
-
- lea PIC_BobTags(pc),a1
- CALL LoadPic
- tst.l d0
- beq.s .Error_Picture
-
- move.l PIC_Bobs(pc),a1
- move.w PIC_Planes(a1),GSPlanes+2
- move.l PIC_Palette(a1),GSPalette
-
- lea ScreenTags(pc),a0
- CALL AddScreen
- tst.l d0
- beq.s .Error_Screen
-
- move.l Screen(pc),a0 ;a0 = GameScreen
- moveq #2,d0 ;d0 = 2 buffers.
- moveq #MAX_IMAGES,d1 ;d1 = Maximum amount of images.
- CALL InitRestore
- move.l d0,Restorelist
- beq.s .Error_Restorelist
-
- lea TAGS_Ball(pc),a1 ;Initialise the Ball mbob.
- CALL InitBob
- tst.l d0
- beq.s .Error_Ball
-
- lea TAGS_Interlaced(pc),a1 ;Initialise "HiRes Interlaced" bob.
- CALL InitBob
- tst.l d0
- beq.s .Error_Laced
-
- CALL ShowScreen
-
- bsr.s Main
-
- .ReturnToDOS
- move.l GMSBase(pc),a6
- move.l BOB_Interlaced(pc),a1
- CALL FreeBob
- .Error_Laced
- move.l MBOB_Ball(pc),a1
- CALL FreeBob
- .Error_Ball
- move.l Restorelist(pc),d0
- CALL FreeRestore
- .Error_Restorelist
- lea ScreenTags(pc),a0
- CALL DeleteScreen
- .Error_Screen
- move.l PIC_Bobs(pc),a1
- CALL FreePic
- .Error_Picture
- CALL FreeBlitter
- .Error_Blitter
- MOVEM.L (SP)+,A0-A6/D1-D7
- moveq #ERR_OK,d0
- rts
-
- ;===========================================================================;
- ; DEMO CODE
- ;===========================================================================;
-
- Main: move.l GMSBase(pc),a6 ;a6 = GMSBase.
- move.l Screen(pc),a0 ;a0 = GameScreen.
-
- move.l BOB_Interlaced(pc),a1 ;a1 = BOB to draw.
- move.w GS_ScrWidth(a0),d0
- sub.w BOB_Width(a1),d0
- move.w d0,BOB_XCoord(a1)
- moveq #BUFFER2,d0 ;d0 = Buffer 2.
- CALL DrawBob ;>> = Draw the BOB
- moveq #BUFFER1,d0 ;d1 = Buffer 1.
- CALL DrawBob ;>> = Draw the BOB
-
- moveq #$00,d7
- move.l MBOB_Ball(pc),a1
- move.l MB_EntryList(a1),a2 ;a2 = First entry.
- move.w MB_AmtEntries(a1),d2 ;a2 = Amount of entries.
- subq.w #1,d2 ;d2 = --1 for loop.
- moveq #$00,d3
-
- .create eor.w #1,d3
-
- moveq #8,d1 ;Set Y speed here.
- CALL FastRandom
- addq.w #2,d0
- move.w d0,BE_YSpeed(a2)
-
- move.w #8,d1 ;Set X speed here.
- CALL FastRandom
- addq.w #1,d0
- move.w d0,BE_XSpeed(a2)
-
- tst.w d3
- beq.s .posx
- neg.w BE_XSpeed(a2)
- .posx
- move.w GS_ScrHeight(a0),d1 ;Starting Y coordinate.
- asr.w #1,d1
- CALL FastRandom
- asr.w #1,d1
- add.w d1,d0
- move.w d0,BE_YCoord(a2)
-
- move.w GS_ScrWidth(a0),d1 ;Starting X coordinate.
- CALL FastRandom
- move.w d0,BE_XCoord(a2)
-
- moveq #12,d1
- CALL FastRandom
- move.w d0,BE_Frame(a2)
- move.b .Sets(pc,d0.w),BE_Set+1(a2)
- move.w #1,BE_FChange(a2)
- move.w d3,BE_Locked(a2)
-
- lea NBE_SIZEOF(a2),a2
- dbra d2,.create
- bra.s Loop
-
- .Sets dc.b 0,0,0,0
- dc.b 1,1,1,1
- dc.b 2,2,2,2
-
- ;---------------------------------------------------------------------------;
-
- Loop: addq.w #1,d7
- move.l MB_EntryList(a1),a2 ;a2 = First entry.
- move.w MB_AmtEntries(a1),d2
- subq.w #1,d2
- .update bsr.s UpdateBob
- lea NBE_SIZEOF(a2),a2
- dbra d2,.update
-
- move.l Restorelist(pc),a1 ;a1 = Restorelist.
- CALL Restore
-
- move.l a1,a2 ;a2 = Restorelist.
- move.l MBOB_Ball(pc),a1 ;a1 = BOB to draw.
- moveq #BUFFER2,d0
- CALL DrawBob ;>> = Draw the BOB
-
- CALL WaitVBL ;>> = Wait for VBL.
- CALL SwapBuffers ;>> = Swap the buffers.
-
- moveq #JPORT1,d0 ;d0 = JoyPort2
- moveq #JT_ZBXY,d1 ;d1 = Bit switch type.
- CALL ReadJoyPort ;>> = Go get port status.
- btst #MB_LMB,d0 ;d0 = LMB pressed?
- beq.s Loop ;>> = No.
- rts
-
- ;===========================================================================;
- ; UPDATE A BOB
- ;===========================================================================;
- ;Function: Moves the entity according to its internal settings.
- ;Requires: a1 = Bob structure.
- ; a2 = Entry to update.
-
- GRAVITY = 1
-
- UpdateBob:
- move.w BE_YCoord(a2),d0 ;d0 = YCoord
- add.w BE_YSpeed(a2),d0 ;d0 = (YCoord)+YSpeed
- cmp.w GS_ScrHeight(a0),d0 ;d0 = Should this bob bounce?
- blt.s .NoBounce ;>> = No.
- neg.w BE_YSpeed(a2) ;a2 = Bounce the bob!
- addq.w #GRAVITY,BE_YSpeed(a2) ;a2 = Gravity pushes the bob down.
- bra.s .CheckX
- .NoBounce
- move.w d0,BE_YCoord(a2) ;d0 = Save the change.
- addq.w #GRAVITY,BE_YSpeed(a2) ;a2 = Gravity pushes the bob down.
-
- .CheckX move.w BE_XCoord(a2),d0
- add.w BE_XSpeed(a2),d0
- cmp.w GS_ScrWidth(a0),d0
- bcs.s .NoXBounce
- neg.w BE_XSpeed(a2)
- bra.s .Animate
- .NoXBounce
- move.w d0,BE_XCoord(a2)
-
- ;---------------------------------------------------------------------------;
-
- .Animate
- tst.w BE_Locked(a2)
- beq.s .exit
- move.w d7,d6
- and.w #%00000011,d6
- bne.s .exit
- move.w BE_FChange(a2),d1
- bgt.s .Positive
-
- .Negative
- cmp.w #1,BE_Set(a2)
- bgt.s .NBlue
- beq.s .NGreen
- .NRed add.w d1,BE_Frame(a2)
- tst BE_Frame(a2)
- bge.s .exit
- move.w #1,BE_FChange(a2)
- clr.w BE_Frame(a2)
- rts
- .NGreen add.w d1,BE_Frame(a2)
- cmp.w #4,BE_Frame(a2)
- bge.s .done
- move.w #1,BE_FChange(a2)
- move.w #4,BE_Frame(a2)
- rts
- .NBlue add.w d1,BE_Frame(a2)
- cmp.w #8,BE_Frame(a2)
- bge.s .done
- move.w #1,BE_FChange(a2)
- move.w #8,BE_Frame(a2)
- .exit rts
-
- .Positive
- cmp.w #1,BE_Set(a2)
- bgt.s .PBlue
- beq.s .PGreen
- .PRed add.w d1,BE_Frame(a2)
- cmp.w #3,BE_Frame(a2)
- ble.s .done
- move.w #-1,BE_FChange(a2)
- move.w #2,BE_Frame(a2)
- rts
- .PGreen add.w d1,BE_Frame(a2)
- cmp.w #7,BE_Frame(a2)
- ble.s .done
- move.w #-1,BE_FChange(a2)
- move.w #6,BE_Frame(a2)
- rts
- .PBlue add.w d1,BE_Frame(a2)
- cmp.w #11,BE_Frame(a2)
- ble.s .done
- move.w #-1,BE_FChange(a2)
- move.w #10,BE_Frame(a2)
- .done rts
-
- ;===========================================================================;
- ; DATA
- ;===========================================================================;
-
- STRUCTURE NBE,BE_SIZEOF ;Definition for the mutated Entry-
- WORD BE_XSpeed ;list in the Ball bob.
- WORD BE_YSpeed
- WORD BE_Set ;0 = Red, 1 = Green, 2 = Blue.
- WORD BE_FChange
- WORD BE_Locked
- LABEL NBE_SIZEOF
-
- Restorelist: dc.l 0
-
- ScreenTags: dc.l TAGS_GAMESCREEN
- Screen: dc.l 0
- dc.l GSA_Rasterlist,Rasterlist
- dc.l GSA_ScrWidth,640
- dc.l GSA_ScrHeight,512
- dc.l GSA_Attrib,DBLBUFFER
- dc.l GSA_ScrMode,HIRES|LACED
- dc.l GSA_Planes
- GSPlanes: dc.l 0
- dc.l GSA_Palette
- GSPalette: dc.l 0
- dc.l TAGEND
-
- Rasterlist: COLOURLIST 300,30,00,.colours ;Line, Skip, Colnum, Colours.
- RASTEND
- .colours dc.l $100000,$200000,$300000,$400000,$500000,$600000,$700000
- dc.l -1
-
- ;---------------------------------------------------------------------------;
-
- PIC_BobTags: dc.l TAGS_PICTURE
- PIC_Bobs: dc.l 0
- dc.l PCA_Options,VIDEOMEM|GETPALETTE
- dc.l PCA_File,.file
- dc.l TAGEND
- .file dc.b "GMS:demos/data/PIC.HRPulse",0
- even
-
- ;---------------------------------------------------------------------------;
-
- TAGS_Ball: dc.l TAGS_MBOB
- MBOB_Ball: dc.l 0
- dc.l MBA_AmtEntries,MAX_IMAGES
- dc.l MBA_Framelist,.frames
- dc.l MBA_Width,16
- dc.l MBA_Height,16
- dc.l MBA_EntryList,Images
- dc.l MBA_Attrib,CLIP|GENMASKS|CLEAR|CLRNOMASK
- dc.l MBA_PictureTags,PIC_BobTags
- dc.l MBA_EntrySize,NBE_SIZEOF
- dc.l TAGEND
-
- .frames dc.w 00,16*0,0,0 ;RED
- dc.w 00,16*1,0,0
- dc.w 00,16*2,0,0
- dc.w 00,16*3,0,0
- dc.w 16,16*0,0,0 ;GREEN
- dc.w 16,16*1,0,0
- dc.w 16,16*2,0,0
- dc.w 16,16*3,0,0
- dc.w 32,16*0,0,0 ;BLUE
- dc.w 32,16*1,0,0
- dc.w 32,16*2,0,0
- dc.w 32,16*3,0,0
- dc.l -1
-
- ;---------------------------------------------------------------------------;
-
- TAGS_Interlaced dc.l TAGS_BOB
- BOB_Interlaced: dc.l 0
- dc.l MBA_Framelist,.frames
- dc.l MBA_Width,96
- dc.l MBA_Height,7
- dc.l MBA_Attrib,GENMASKS
- dc.l MBA_PictureTags,PIC_BobTags
- dc.l TAGEND
-
- .frames dc.w 000,16*4,0,0 ;0 X/Y Graphic, X/Y Mask
- dc.l -1
-
- ;---------------------------------------------------------------------------;
-
- SECTION Images,BSS
-
- Images ds.b NBE_SIZEOF*MAX_IMAGES ;X/Y/Frame/Speed/Set/FChange/Locked
-
-