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- always use page 6 for P/M mouse cursor

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- make cursor character of text mode callback configurable
- change default cursor character of text mode callback from 'plus' to 'diamond'
- set P/M callback as default
This commit is contained in:
Christian Groessler
2014-04-11 23:46:53 +02:00
parent 661203a89a
commit 526b440b24
5 changed files with 257 additions and 220 deletions
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185
libsrc/atari/mcbpm.s
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@@ -1,42 +1,48 @@
;
; P/M mouse callbacks for the Ataris
;
; Christian Groessler, 07.04.2014
; Christian Groessler, 11.04.2014
;
; All functions in this module should be interrupt safe, because they may
; be called from an interrupt handler
;
.include "atari.inc"
.importzp sp
.importzp sp
.export _mouse_pm_callbacks
.constructor pm_init,27
.destructor pm_down,7
.export _mouse_pm_callbacks
; get mouse shape data
.import mouse_pm_bits
.import mouse_pm_height
.import mouse_pm_hotspot_x
.import mouse_pm_hotspot_y
; P/M definitions. The first value can be changed to adjust the number
; of the P/M used for the mouse. All others depend on this value.
; Valid P/M numbers are 0 to 4. When 4 is used, the missiles are used
; as a player.
MOUSE_PM_NUM = 4 ; P/M used for the mouse
MOUSE_PM_BASE = pm_base
MOUSE_PM_NUM = 2 ; P/M used for the mouse
MOUSE_PM_BASE = pm_base ; ZP location pointing to the hw area used by the selected P/M
.if MOUSE_PM_NUM = 4
MOUSE_PM_RAW = 0
.macro set_mouse_x
; assume CF = 0
sta HPOSM3
adc #2
sta HPOSM2
adc #2
sta HPOSM1
adc #2
sta HPOSM0
MOUSE_PM_RAW = 0 ; MOUSE_PM_RAW is the hardware P/M number for MOUSE_PM_NUM
.macro set_mouse_x
; assume CF = 0
sta HPOSM3
adc #2
sta HPOSM2
adc #2
sta HPOSM1
adc #2
sta HPOSM0
.endmacro
.else
MOUSE_PM_RAW = MOUSE_PM_NUM + 1
.macro set_mouse_x
sta HPOSP0 + MOUSE_PM_NUM
MOUSE_PM_RAW = MOUSE_PM_NUM + 1
.macro set_mouse_x
sta HPOSP0 + MOUSE_PM_NUM
.endmacro
.endif
@@ -57,7 +63,8 @@ _mouse_pm_callbacks:
.bss
omy: .res 1 ; Old Mouse Y position
omy: .res 1 ; old Mouse Y position
colhlp: .res 1 ; helper variable to set P/M color
; ------------------------------------------------------------------------
@@ -72,7 +79,7 @@ pm_base:.res 2
; Hide the mouse cursor.
hide: lda #0
sta GRACTL
rts
rts
; Show the mouse cursor.
show:
@@ -82,88 +89,100 @@ show:
lda #1
.endif
sta GRACTL
;rts
;rts ; optimized out
prep:
draw:
rts
; Move the mouse cursor x position to the value in A/X.
movex: cpx #1
ror a
clc
adc #48
set_mouse_x
rts
movex: cpx #1
ror a
clc
adc #48
sbc #<(mouse_pm_hotspot_x - 1)
set_mouse_x
jmp update_colors
; Move the mouse cursor y position to the value in A/X.
movey: clc
adc #32
pha
adc #32
sbc #<(mouse_pm_hotspot_y - 1)
pha
lda omy
jsr clr_pm ; remove player at old position
jsr update_colors
pla
sta omy
;jmp set_pm ; put player to new position
; fall thru
; Set P/M data from 'mouse_bits'
; Set P/M data from 'mouse_pm_bits'
set_pm: tay
ldx #0
set_l: lda mouse_bits,x
set_l: lda mouse_pm_bits,x
sta (MOUSE_PM_BASE),y
inx
iny
cpx #mouse_height
beq set_end
cpx #<mouse_pm_height
bcc set_l
rts
set_end:rts
; Clear (zero) P/M data
clr_pm: ldx #mouse_height
clr_pm: ldx #<mouse_pm_height
tay
lda #0
clr_l: sta (MOUSE_PM_BASE),y
iny
beq clr_end
dex
bne clr_l
clr_end:rts
pm_down = hide
; this assumes a GRAPHICS 0 screen
update_colors:
lda COLOR2 ; get background color
and #$F0
sta colhlp
lda COLOR1
and #$0F
ora colhlp
.if MOUSE_PM_NUM = 4
sta PCOLR0
sta PCOLR1
sta PCOLR2
sta PCOLR3
sta SIZEM
.else
sta PCOLR0 + MOUSE_PM_NUM
sta SIZEP0 + MOUSE_PM_NUM
.endif
rts
pm_down = hide
; ------------------------------------------------------------------------
.segment "INIT"
.segment "INIT"
pm_init:lda #0
sta sp
sta MOUSE_PM_BASE
lda sp+1
and #7 ; offset within 2K
cmp #3 + MOUSE_PM_RAW + 1 ; can we use it?
bcc @decr ; no
pm_init:lda #0
sta MOUSE_PM_BASE
ldx #6 ; page 6
stx MOUSE_PM_BASE+1
tay
@iniloo:sta (MOUSE_PM_BASE),y
iny
bne @iniloo
lda sp+1
and #$F8
@set: adc #3 + MOUSE_PM_RAW - 1 ; CF is set, so adding MOUSE_PM_RAW + 3
sta MOUSE_PM_BASE+1
sta sp+1
bne @cont
@decr: lda sp+1
and #$F8
sbc #8 - 1 ; CF is clear, subtracts 8
bcs @set ; jump always
@cont: lda #0
tay
@iniloo:sta (MOUSE_PM_BASE),y
iny
bne @iniloo
lda MOUSE_PM_BASE+1
and #$F8
sta PMBASE
.if 0 ; enable if not using page 6 for P/M data
lda MOUSE_PM_BASE+1
and #$F8
.endif
sta PMBASE
lda #62
sta SDMCTL
@@ -171,34 +190,4 @@ pm_init:lda #0
lda #1 + 16
sta GPRIOR
lda #0
.if MOUSE_PM_NUM = 4
sta PCOLR0
sta PCOLR1
sta PCOLR2
sta PCOLR3
sta SIZEM
.else
sta PCOLR0 + MOUSE_PM_NUM
sta SIZEP0 + MOUSE_PM_NUM
.endif
rts
; ------------------------------------------------------------------------
.data
mouse_bits:
.byte %11110000
.byte %11000000
.byte %10100000
.byte %10010000
.byte %10001000
.byte %00000100
.byte %00000010
; .byte %00000000
mouse_height = * - mouse_bits
jmp update_colors