275 lines
4.0 KiB
ArmAsm
275 lines
4.0 KiB
ArmAsm
;===================================
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; where do we point?
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;===================================
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; check to see if cursor is in any of zones
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where_do_we_point:
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ldy #LOCATION_NUM_AREAS
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lda (LOCATION_STRUCT_L),Y
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tax ; num areas in X
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ldy #LOCATION_AREAS
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where_loop:
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lda CURSOR_X
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clc
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adc #3 ; center of cursor is 3 over
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cmp (LOCATION_STRUCT_L),Y
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bcc where_notxlow ; too far left
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iny
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cmp (LOCATION_STRUCT_L),Y
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bcs where_notxhigh ; too far right
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iny
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lda CURSOR_Y
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clc
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adc #4 ; center of cursor 4 down?
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cmp (LOCATION_STRUCT_L),Y
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bcc where_notylow ; too far up
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iny
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; cmp CURSOR_Y
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cmp (LOCATION_STRUCT_L),Y
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bcs where_notyhigh ; too far right
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iny
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; we got this far, was a match
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lda (LOCATION_STRUCT_L),Y
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sta NOUN_L
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iny
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lda (LOCATION_STRUCT_L),Y
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sta NOUN_H
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iny
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lda (LOCATION_STRUCT_L),Y
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sta NOUN_VECTOR_L
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iny
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lda (LOCATION_STRUCT_L),Y
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sta NOUN_VECTOR_H
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lda #1
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sta VALID_NOUN
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rts
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; update area pointer
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where_notxlow:
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iny
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where_notxhigh:
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iny
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where_notylow:
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iny
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where_notyhigh:
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iny
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iny
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iny
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iny
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iny
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dex
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bne where_loop
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point_nowhere:
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lda #0
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sta VALID_NOUN
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rts
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lookout_action:
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lda CURRENT_VERB
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asl
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tay
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lda lookout_actions,Y
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cmp #$ff
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beq lookout_nothing
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sta MESSAGE_L
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lda lookout_actions+1,Y
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sta MESSAGE_H
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jmp do_display_message
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lookout_nothing:
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lda #VERB_WALK
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sta CURRENT_VERB
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rts
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lookout_actions:
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.word $FFFF ; give
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.word doesnt_open ; open
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.word doesnt_work ; close
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.word $FFFF ; pick_up
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.word lookout_look ; look_at
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.word lookout_talk ; talk_to
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.word doesnt_work ; use
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.word icant_move ; push
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.word icant_move ; pull
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;0123456789012345678901234567890123456789
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lookout_look:
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.byte 7,21,"I THINK HE MIGHT BE ASLEEP.",0
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lookout_talk:
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.byte 16,21,"YIKES!!",0
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doesnt_open:
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.byte 9,21,"IT DOESN'T SEEM TO OPEN.",0
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doesnt_work:
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.byte 12,21,"THAT DOESN'T WORK.",0
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icant_move:
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.byte 12,21,"I CAN'T MOVE IT.",0
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cant_pick_up:
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.byte 10,21,"I CAN'T PICK THAT UP.",0
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not_special:
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.byte 1,21,"I DON'T SEE ANYTHING SPECIAL ABOUT IT.",0
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for_what:
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.byte 15,21,"FOR WHAT?",0
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;=============================
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; can't do anything with path
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; real game they all make you walk there
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path_action:
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path_nothing:
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lda #VERB_WALK
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sta CURRENT_VERB
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rts
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;=============================
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; can't do anything with stairs
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; real game they all make you walk there
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stairs_action:
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stairs_nothing:
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lda #VERB_WALK
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sta CURRENT_VERB
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rts
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;======================
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; door
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door_action:
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lda CURRENT_VERB
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cmp #VERB_OPEN
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bne check_door_close
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lda #1
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sta BAR_DOOR_OPEN
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jmp door_nothing
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check_door_close:
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cmp #VERB_CLOSE
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bne door_common
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lda #0
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sta BAR_DOOR_OPEN
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jmp door_nothing
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door_common:
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asl
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tay
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lda door_actions,Y
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cmp #$ff
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beq door_nothing
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sta MESSAGE_L
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lda door_actions+1,Y
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sta MESSAGE_H
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jmp do_display_message
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door_nothing:
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lda #VERB_WALK
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sta CURRENT_VERB
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rts
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door_actions:
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.word $FFFF ; give
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.word $FFFF ; open
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.word $FFFF ; close
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.word cant_pick_up ; pick_up
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.word not_special ; look_at
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.word $FFFF ; talk_to
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.word doesnt_work ; use
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.word icant_move ; push
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.word icant_move ; pull
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rts
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moon_action:
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moon_nothing:
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lda #VERB_WALK
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sta CURRENT_VERB
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rts
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;=============================
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; can't do anything with cliffside
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; real game they all make you walk there
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cliffside_action:
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cliffside_nothing:
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lda #VERB_WALK
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sta CURRENT_VERB
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rts
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poster_action:
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lda CURRENT_VERB
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asl
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tay
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lda poster_actions,Y
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cmp #$ff
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beq poster_nothing
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sta MESSAGE_L
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lda poster_actions+1,Y
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sta MESSAGE_H
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jmp do_display_message
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poster_nothing:
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lda #VERB_WALK
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sta CURRENT_VERB
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rts
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poster_actions:
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.word $FFFF ; give
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.word doesnt_open ; open
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.word doesnt_work ; close
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.word cant_pick_up ; pick_up
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.word poster_look ; look_at
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.word $FFFF ; talk_to
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.word doesnt_work ; use
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.word icant_move ; push
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.word icant_move ; pull
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poster_look:
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.byte 8,21,"RE-ELECT GOVERNOR MARLEY.",0
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;=============================
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map_action:
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map_nothing:
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lda #VERB_WALK
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sta CURRENT_VERB
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rts
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do_display_message:
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lda #1
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sta DISPLAY_MESSAGE
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lda #0
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sta CURSOR_VISIBLE
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lda #VERB_WALK
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sta CURRENT_VERB
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rts
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