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address issue raised in the pull request; add support to not use page 6
again
This commit is contained in:
Christian Groessler
parent
526b440b24
commit
88e3e60550
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@ -9,9 +9,9 @@
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;
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.export mouse_pm_bits
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.export mouse_pm_height : absolute
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.export mouse_pm_hotspot_x : absolute
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.export mouse_pm_hotspot_y : absolute
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.export mouse_pm_height : zeropage
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.export mouse_pm_hotspot_x : zeropage
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.export mouse_pm_hotspot_y : zeropage
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.data
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@ -7,6 +7,8 @@
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; be called from an interrupt handler
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;
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USE_PAGE6 = 1
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.include "atari.inc"
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.importzp sp
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.export _mouse_pm_callbacks
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@ -14,17 +16,28 @@
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.destructor pm_down,7
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; get mouse shape data
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.import mouse_pm_bits
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.import mouse_pm_height
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.import mouse_pm_hotspot_x
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.import mouse_pm_hotspot_y
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.import mouse_pm_bits
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.importzp mouse_pm_height
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.importzp mouse_pm_hotspot_x
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.importzp mouse_pm_hotspot_y
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; P/M definitions. The first value can be changed to adjust the number
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; of the P/M used for the mouse. All others depend on this value.
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; P/M definitions. The MOUSE_PM_NUM value can be changed to adjust the
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; number of the P/M used for the mouse. All others depend on this value.
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; Valid P/M numbers are 0 to 4. When 4 is used, the missiles are used
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; as a player.
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.if USE_PAGE6
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MOUSE_PM_NUM = 2 ; P/M used for the mouse
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; This cannot be changed since only player #2 uses the memory at $600.
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.else
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MOUSE_PM_NUM = 4 ; P/M used for the mouse
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; Using player #4 (missiles) wastes the least amount of memory on the
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; atari target, since top of memory is typically at $xC20, and the
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; missiles use the space at $xB00-$xBFF.
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; On the atarixl target this configuration (not using page 6) is not
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; really satisfying since the top of memory typically lies beneath
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; the ROM and there is flickering visible while the ROM is banked in.
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.endif
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MOUSE_PM_BASE = pm_base ; ZP location pointing to the hw area used by the selected P/M
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.if MOUSE_PM_NUM = 4
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@ -100,14 +113,14 @@ movex: cpx #1
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ror a
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clc
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adc #48
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sbc #<(mouse_pm_hotspot_x - 1)
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sbc #(mouse_pm_hotspot_x - 1) & $FF
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set_mouse_x
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jmp update_colors
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; Move the mouse cursor y position to the value in A/X.
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movey: clc
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adc #32
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sbc #<(mouse_pm_hotspot_y - 1)
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sbc #(mouse_pm_hotspot_y - 1) & $FF
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pha
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lda omy
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jsr clr_pm ; remove player at old position
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@ -125,12 +138,12 @@ set_l: lda mouse_pm_bits,x
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inx
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iny
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beq set_end
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cpx #<mouse_pm_height
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cpx #mouse_pm_height
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bcc set_l
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set_end:rts
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; Clear (zero) P/M data
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clr_pm: ldx #<mouse_pm_height
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clr_pm: ldx #mouse_pm_height
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tay
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lda #0
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clr_l: sta (MOUSE_PM_BASE),y
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@ -158,9 +171,11 @@ update_colors:
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sta PCOLR1
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sta PCOLR2
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sta PCOLR3
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lda #0
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sta SIZEM
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.else
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sta PCOLR0 + MOUSE_PM_NUM
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lda #0
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sta SIZEP0 + MOUSE_PM_NUM
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.endif
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rts
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@ -169,16 +184,47 @@ update_colors:
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.segment "INIT"
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pm_init:lda #0
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pm_init:
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lda #0
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.if USE_PAGE6
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sta MOUSE_PM_BASE
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ldx #6 ; page 6
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stx MOUSE_PM_BASE+1
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.else
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; use top of memory and lower sp accordingly
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sta sp
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sta MOUSE_PM_BASE
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lda sp+1
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and #7 ; offset within 2K
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cmp #3 + MOUSE_PM_RAW + 1 ; can we use it?
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bcc @decr ; no
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lda sp+1
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and #$F8
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@set: adc #3 + MOUSE_PM_RAW - 1 ; CF is set, so adding MOUSE_PM_RAW + 3
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sta MOUSE_PM_BASE+1
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sta sp+1
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bne @cont ; jump always
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@decr: lda sp+1
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and #$F8
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sbc #8 - 1 ; CF is clear, subtracts 8
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bcs @set ; jump always
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@cont: lda #0
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.endif
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tay
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@iniloo:sta (MOUSE_PM_BASE),y
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iny
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bne @iniloo
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.if 0 ; enable if not using page 6 for P/M data
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.if ! USE_PAGE6
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lda MOUSE_PM_BASE+1
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and #$F8
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.endif
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@ -187,7 +233,7 @@ pm_init:lda #0
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lda #62
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sta SDMCTL
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lda #1 + 16
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lda #1
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sta GPRIOR
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jmp update_colors
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@ -4,6 +4,4 @@
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; Christian Groessler, 11.04.2014
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;
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.export mouse_txt_char : absolute
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mouse_txt_char = 96 ; 'diamond' screen code
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.export mouse_txt_char : zp = 96 ; 'diamond' screen code
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@ -13,7 +13,7 @@
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.export _mouse_txt_callbacks
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.importzp tmp4
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.import mul40,loc_tmp
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.import mouse_txt_char ; screen code of mouse cursor
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.importzp mouse_txt_char ; screen code of mouse cursor
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.include "atari.inc"
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@ -72,7 +72,7 @@ hide:
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prep:
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jsr getcursor ; Get character at cursor position
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cmp #<mouse_txt_char; "mouse" character
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cmp #mouse_txt_char ; "mouse" character
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bne overwr ; no, probably program has overwritten it
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lda backup ;
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jmp setcursor ; Draw character
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@ -88,7 +88,7 @@ draw:
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beq done
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jsr getcursor ; Cursor visible at current position?
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sta backup ; Save character at cursor position
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lda #<mouse_txt_char
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lda #mouse_txt_char
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jmp setcursor ; Draw cursor
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