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- ;-------T-------T------------------------T----------------------------------;
- ;Name: Screen Redimension Demo
- ;Author: Paul Manias
- ;Copyright: DreamWorld Productions (c) 1996-1997. Freely distributable.
- ;
- ;Test routine for height and width alteration. Move the mouse to alter the
- ;position of the screen's right hand corner. Hold the LMB and move the
- ;mouse around to move the entire screen around your monitor.
- ;
- ;Press RMB to exit.
-
- INCDIR "GMSDev:Includes/"
- INCLUDE "dpkernel/dpkernel.i"
-
- SECTION "Demo",CODE
-
- ;===========================================================================;
- ; INITIALISE DEMO
- ;===========================================================================;
-
- STARTDPK
-
- Start: MOVEM.L A0-A6/D1-D7,-(SP)
- lea PictureTags(pc),a0
- sub.l a1,a1
- CALL Init
- tst.l d0
- beq.s .Exit
-
- lea ScreenTags(pc),a0
- move.l Picture(pc),a1
- move.l PIC_Bitmap(a1),a2
- move.l BMP_Data(a2),GMemPtr
- move.l PIC_Palette(a1),GPalette
- sub.l a1,a1
- CALL Init
- tst.l d0
- beq.s .Exit
-
- moveq #ID_JOYDATA,d0 ;Get joydata structure for reading
- CALL Get ;user input.
- move.l d0,JoyData
- beq.s .Exit
- move.l d0,a0
- sub.l a1,a1
- CALL Init
- tst.l d0
- beq.s .Exit
-
- move.l Screen(pc),a0
- CALL Display
- tst.l d0
- bne.s .Exit
-
- bsr.s Main
-
- .Exit move.l DPKBase(pc),a6
- move.l JoyData(pc),a0
- CALL Free
- move.l Picture(pc),a0
- CALL Free
- move.l Screen(pc),a0
- CALL Free
- MOVEM.L (SP)+,A0-A6/D1-D7
- moveq #ERR_OK,d0
- rts
-
- ;===========================================================================;
- ; MAIN LOOP
- ;===========================================================================;
-
- Main: move.l DPKBase(pc),a6
- move.l JoyData(pc),a0
- CALL Query
-
- move.l JoyData(pc),a1
- move.l JD_Buttons(a1),d0
- move.w JD_XChange(a1),d1
- move.w JD_YChange(a1),d2
-
- btst #JB_RMB,d0
- bne.s Fade_Here
-
- btst #JB_LMB,d0
- bne.s .RMB
-
- move.l Screen(pc),a0
- add.w d1,GS_Width(a0)
- add.w d2,GS_Height(a0)
- bra.s .chkty
-
- .RMB ;move.l Screen(pc),a0
- ;add.w d1,GS_XOffset(a0)
- ;add.w d2,GS_YOffset(a0)
-
- .chkty tst.w GS_Height(a0)
- bge.s .chkby
- clr.w GS_Height(a0)
- .chkby cmp.w #256,GS_Height(a0)
- ble.s .chklx
- move.w #256,GS_Height(a0)
- .chklx tst.w GS_Width(a0)
- bge.s .chkrx
- clr.w GS_Width(a0)
- .chkrx cmp.w #320,GS_Width(a0)
- ble.s .done
- move.w #320,GS_Width(a0)
-
- .done move.l SCRBase(pc),a6
- move.l Screen(pc),a0
- CALL scrWaitAVBL ;Always wait for a VBL first.
-
- move.l Screen(pc),a0
- CALL scrRemakeScreen ;Reposition the screen now.
- bra Main
-
- Fade_Here:
- moveq #00,d7
- move.l SCRBase(pc),a6
-
- .Fade move.l Screen(pc),a0
- CALL scrWaitAVBL
- move.l Screen(pc),a0
- moveq #4,d1 ;d1 = Speed
- moveq #$000,d2
- moveq #00,d3 ;d1 = Start at colour zero.
- moveq #32,d4 ;d2 = Amount of colours (32)
- move.l GS_Palette(a0),a1 ;a1 = Palette to fade to.
- addq.w #8,a1
- move.w d7,d0
- CALL scrPaletteToColour
- move.w d0,d7
- bne.s .Fade
- rts
-
- ;===========================================================================;
- ; CODE-RELATIVE DATA
- ;===========================================================================;
-
- JoyData: dc.l 0
-
- ScreenTags: dc.l TAGS_SCREEN
- Screen: dc.l 0
- dc.l GSA_MemPtr1
- GMemPtr: dc.l 0
- dc.l GSA_Palette
- GPalette: dc.l 0
- dc.l GSA_Width,320
- dc.l GSA_Height,256
- dc.l GSA_BitmapTags,0
- dc.l BMA_AmtColours,32
- dc.l TAGEND,0
- ;dc.l GSA_Attrib,CENTRE
- ;dc.l GSA_ScrMode,LACED
- dc.l TAGEND
-
- PictureTags: dc.l TAGS_PICTURE
- Picture: dc.l 0
- dc.l PCA_BitmapTags,0
- dc.l BMA_Data
- PicData: dc.l 0
- dc.l BMA_Width,320
- dc.l BMA_Height,256
- dc.l BMA_AmtColours,32
- dc.l BMA_MemType,MEM_VIDEO
- dc.l TAGEND,0
- dc.l PCA_Options,IMG_RESIZE
- dc.l PCA_Source,.file
- dc.l TAGEND
-
- .file FILENAME "GMS:demos/data/PIC.Green"
-
- ;===========================================================================;
-
- ProgName: dc.b "Redimension",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 "Screen redimensioning demo.",0
- even
-