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Started debugging the mouse routines
git-svn-id: svn://svn.cc65.org/cc65/trunk@341 b7a2c559-68d2-44c3-8de9-860c34a00d81
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@ -8,6 +8,7 @@
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.export _mouse_init, _mouse_done
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.export _mouse_hide, _mouse_show
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.export _mouse_box, _mouse_info
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.export _mouse_x, _mouse_y
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.export _mouse_move
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.import popa, popsreg, addysp1
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@ -95,8 +96,7 @@ _mouse_hide:
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ldx MouseSprite ; Sprite defined?
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beq @L1 ; Jump if no
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lda BitMask-1,x ; Get bit mask
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eor #$FF ; We must clear the bit
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lda NotMask-1,x ; Get clean mask
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sei ; Disable interrupts
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and VIC_SPR_ENA
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@ -112,15 +112,21 @@ _mouse_hide:
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;
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_mouse_show:
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lda Visible ; Mouse already visible?
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beq @L1 ; Jump if yes
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dec Visible ; Get the flag
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bne @L1 ; Jump if still invisible
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ldx MouseSprite ; Sprite defined?
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beq @L1 ; Jump if no
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lda BitMask-1,x ; Get bit mask
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sei ; Disable interrupts
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jsr MoveSprite1 ; Move the sprite to it's position
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ldx MouseSprite ; Get sprite number (again)
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lda BitMask-1,x ; Get bit mask
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ora VIC_SPR_ENA
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sta VIC_SPR_ENA ; Enable sprite
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cli ; Enable interrupts
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@L1: rts
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@ -131,12 +137,14 @@ _mouse_show:
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;
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_mouse_box:
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ldy #0 ; Stack offset
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php
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sei ; Disable interrupts
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sta YMax
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stx YMax+1 ; maxy
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ldy #0
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lda (sp),y
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sta XMax
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iny
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@ -157,10 +165,36 @@ _mouse_box:
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lda (sp),y
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sta XMin+1 ; minx
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cli ; Enable interrupts
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plp ; Enable interrupts
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jmp addysp1 ; Drop params, return
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; --------------------------------------------------------------------------
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;
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; int __fastcall__ mouse_x (void);
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;
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_mouse_x:
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php
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sei
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lda XPos
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ldx XPos+1
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plp
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rts
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; --------------------------------------------------------------------------
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;
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; int __fastcall__ mouse_y (void);
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;
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_mouse_y:
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php
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sei
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lda YPos
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ldx YPos+1
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plp
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rts
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; --------------------------------------------------------------------------
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;
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; void mouse_info (...);
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@ -186,11 +220,6 @@ _mouse_move:
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sta XPos
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stx XPos+1 ; Set new position
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lda Visible ; Mouse visible?
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bne @L9 ; Jump if no
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lda MouseSprite ; Sprite defined?
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beq @L9
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jsr MoveSprite ; Move the sprite to the mouse pos
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@L9: cli ; Enable interrupts
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@ -215,26 +244,25 @@ MouseIRQ:
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tay ; Remember low byte
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txa
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adc XPos+1
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tax
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; Limit the X coordinate to the bounding box
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cpy XMin+1
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bne @L1
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cmp XMin
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@L1: bpl @L2
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cpy XMin
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sbc XMin+1
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bpl @L1
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ldy XMin
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lda XMin+1
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jmp @L4
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ldx XMin+1
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jmp @L2
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@L1: txa
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@L2: cpy XMax+1
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bne @L3
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cmp XMax
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beq @L4
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@L3: bmi @L4
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cpy XMax
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sbc XMax+1
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bmi @L2
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ldy XMax
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lda XMax+1
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@L4: sty XPos
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sta XPos+1
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ldx XMax+1
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@L2: sty XPos
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stx XPos+1
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; Calculate the Y movement vector
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@ -251,25 +279,25 @@ MouseIRQ:
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txa
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adc YPos+1
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; Limit the Y coordinate to the bounding box
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cpy YMin+1
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bne @L5
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cmp YMin
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@L5: bpl @L6
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cpy YMin
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sbc YMin+1
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bpl @L3
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ldy YMin
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lda YMin+1
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jmp @L8
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ldx YMin+1
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jmp @L4
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@L3: txa
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@L6: cpy YMax+1
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bne @L7
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cmp YMax
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beq @L8
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@L7: bmi @L8
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cpy YMax
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sbc YMax+1
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bmi @L4
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ldy YMax
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lda YMax+1
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@L8: sty YPos
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sta YPos+1
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ldx YMax+1
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@L4: sty YPos
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stx YPos+1
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; Move the mouse sprite if it is enabled
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jsr MoveSprite ; Move the sprite
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; Jump to the next IRQ handler
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@ -316,40 +344,46 @@ MoveCheck:
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; --------------------------------------------------------------------------
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;
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; Move the mouse sprite to the current mouse position. Must be called
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; with interrupts off.
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; with interrupts off. MoveSprite1 is an entry without checking and
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; loading X
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;
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MoveSprite:
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lda Visible ; Mouse pointer visible?
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bne @L9 ; Jump if no
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lda Visible ; Mouse visible?
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bne MoveSpriteDone ; Jump if no
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ldx MouseSprite ; Sprite defined?
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beq @L9 ; Jump if no
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ldy BitMask-1,x ; Get high bit mask
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beq MoveSpriteDone ; Jump if no
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; Set the high X bit
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MoveSprite1:
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lda VIC_SPR_HI_X ; Get high X bits of all sprites
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and NotMask-1,x ; Mask out sprite bit
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ldy XPos+1 ; Test Y position
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beq @L1
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ora BitMask-1,x ; Set high X bit
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@L1: sta VIC_SPR_HI_X ; Set hi X sprite values
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; Set the low X byte
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txa
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asl a ; Index*2
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tax
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; Set the X position
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lda XPos+1 ; Negative?
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bmi @L2 ; Jump if yes
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beq @L1
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tya ; Load high position bit
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@L1: ora VIC_SPR_HI_X ; Set high bit
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sta VIC_SPR_HI_X
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lda XPos
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sta VIC_SPR0_X,x ; Set low byte
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sta VIC_SPR0_X-2,x ; Set low byte
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; Set the Y position
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@L2: ldy YPos+1 ; Negative or too large?
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bne @L9 ; Jump if yes
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ldy YPos+1 ; Negative or too large?
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bne MoveSpriteDone ; Jump if yes
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lda YPos
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sta VIC_SPR0_Y,x ; Set Y position
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sta VIC_SPR0_Y-2,x ; Set Y position
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; Done
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@L9: rts
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MoveSpriteDone:
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rts
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; --------------------------------------------------------------------------
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; Data
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@ -377,6 +411,7 @@ YMax: .res 2 ; Y2 value of bounding box
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.data
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BitMask: .byte $01, $02, $04, $08, $10, $20, $40, $80
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NotMask: .byte $FE, $FD, $FB, $F7, $EF, $DF, $BF, $7F
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