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188 lines
3.5 KiB
ArmAsm
188 lines
3.5 KiB
ArmAsm
;
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; Maciej 'YTM/Elysium' Witkowiak
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;
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; 2.7.2001
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;
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; Wrapper for GEOS standard input device interface
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;
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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
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.export _mouse_pos, _mouse_info
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.export _mouse_move, _mouse_buttons
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.import popsreg, addysp1
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.importzp sp, sreg, ptr1
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.include "../inc/const.inc"
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.include "../inc/jumptab.inc"
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.include "../inc/geossym.inc"
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.code
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; --------------------------------------------------------------------------
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;
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; unsigned char __fastcall__ mouse_init (unsigned char type);
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;
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_mouse_init:
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jsr StartMouseMode
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jsr MouseOff
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lda #0
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sta mouseTop
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sta mouseLeft
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sta mouseLeft+1
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lda #199
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sta mouseBottom
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lda graphMode
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bpl _mse_screen320
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lda #<639 ; 80 columns on C128
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ldx #>639
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bne _mse_storex
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_mse_screen320:
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lda #<319 ; 40 columns on C64/C128
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ldx #>319
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_mse_storex:
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sta mouseRight
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stx mouseRight+1
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_mse_initend:
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lda #0
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tax
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; --------------------------------------------------------------------------
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;
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; void mouse_done (void);
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;
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_mouse_done:
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rts
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; --------------------------------------------------------------------------
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;
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; void mouse_hide (void);
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;
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_mouse_hide = MouseOff
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; --------------------------------------------------------------------------
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;
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; void mouse_show (void);
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;
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_mouse_show = MouseUp
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; --------------------------------------------------------------------------
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;
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; void __fastcall__ mouse_box (int minx, int miny, int maxx, int maxy);
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;
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_mouse_box:
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ldy #0 ; Stack offset
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sta mouseBottom
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lda (sp),y
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sta mouseRight
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iny
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lda (sp),y
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sta mouseRight+1 ; maxx
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iny
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lda (sp),y
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sta mouseTop
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iny ; Skip high byte
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iny
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lda (sp),y
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sta mouseLeft
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iny
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lda (sp),y
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sta mouseLeft+1 ; minx
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jmp addysp1 ; Drop params, return
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; --------------------------------------------------------------------------
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;
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; void __fastcall__ mouse_pos (struct mouse_pos* pos);
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; /* Return the current mouse position */
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;
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_mouse_pos:
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sta ptr1
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stx ptr1+1 ; Remember the argument pointer
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ldy #0 ; Structure offset
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php
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sei ; Disable interrupts
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lda mouseXPos ; Transfer the position
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sta (ptr1),y
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lda mouseXPos+1
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iny
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sta (ptr1),y
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lda mouseYPos
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iny
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sta (ptr1),y
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lda #$00
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iny
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sta (ptr1),y
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plp ; Reenable interrupts
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rts ; Done
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; --------------------------------------------------------------------------
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;
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; void __fastcall__ mouse_info (struct mouse_info* info);
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; /* Return the state of the mouse buttons and the position of the mouse */
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;
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_mouse_info:
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; We're cheating here to keep the code smaller: The first fields of the
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; mouse_info struct are identical to the mouse_pos struct, so we will just
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; call _mouse_pos to initialize the struct pointer and fill the position
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; fields.
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jsr _mouse_pos
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; Fill in the button state
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jsr _mouse_buttons ; Will not touch ptr1
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iny
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sta (ptr1),y
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rts
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; --------------------------------------------------------------------------
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;
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; void __fastcall__ mouse_move (int x, int y);
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;
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_mouse_move:
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jsr popsreg ; Get X
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php
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sei ; Disable interrupts
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sta mouseYPos
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lda sreg
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ldx sreg+1
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sta mouseXPos
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stx mouseXPos+1
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plp ; Enable interrupts
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rts
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; --------------------------------------------------------------------------
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;
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; unsigned char mouse_buttons (void);
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;
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_mouse_buttons:
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ldx #0
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lda pressFlag
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and #SET_MOUSE
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lsr
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rts
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