2020-03-08 04:40:31 +00:00
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; Mechanical Engineer (meche) island
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; by deater (Vince Weaver) <vince@deater.net>
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; Zero Page
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.include "zp.inc"
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.include "hardware.inc"
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2020-03-19 18:04:41 +00:00
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.include "common_defines.inc"
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2020-03-08 04:40:31 +00:00
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meche_start:
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;===================
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; init screen
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jsr TEXT
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jsr HOME
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bit KEYRESET
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bit SET_GR
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bit PAGE0
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bit LORES
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bit FULLGR
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lda #0
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sta DRAW_PAGE
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2020-03-19 18:04:41 +00:00
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sta LEVEL_OVER
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2020-03-08 04:40:31 +00:00
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; init cursor
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lda #20
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sta CURSOR_X
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sta CURSOR_Y
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; set up initial location
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jsr change_location
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lda #1
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sta CURSOR_VISIBLE ; visible at first
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2020-03-08 17:45:05 +00:00
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lda #0
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sta ANIMATE_FRAME
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2020-03-08 04:40:31 +00:00
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2020-03-21 19:13:36 +00:00
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jsr adjust_basement_door
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2020-03-08 04:40:31 +00:00
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game_loop:
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;=================
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; reset things
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;=================
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lda #0
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sta IN_SPECIAL
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sta IN_RIGHT
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sta IN_LEFT
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;====================================
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; copy background to current page
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;====================================
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jsr gr_copy_to_current
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;====================================
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; handle special-case forground logic
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;====================================
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2020-03-08 17:45:05 +00:00
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lda LOCATION
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2020-03-19 21:25:20 +00:00
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cmp #MECHE_OPEN_BOOK
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2020-03-08 17:45:05 +00:00
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bne nothing_special
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; handle animated linking book
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lda ANIMATE_FRAME
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asl
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tay
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lda meche_movie,Y
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sta INL
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lda meche_movie+1,Y
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sta INH
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lda #22
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sta XPOS
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lda #12
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sta YPOS
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jsr put_sprite_crop
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lda FRAMEL
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and #$f
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bne done_animate_book
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inc ANIMATE_FRAME
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lda ANIMATE_FRAME
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cmp #11
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bne done_animate_book
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lda #0
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sta ANIMATE_FRAME
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done_animate_book:
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2020-03-08 04:40:31 +00:00
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nothing_special:
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;====================================
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; draw pointer
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;====================================
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jsr draw_pointer
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;====================================
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; page flip
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;====================================
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jsr page_flip
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;====================================
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; handle keypress/joystick
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;====================================
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jsr handle_keypress
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;====================================
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; inc frame count
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;====================================
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inc FRAMEL
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bne room_frame_no_oflo
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inc FRAMEH
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room_frame_no_oflo:
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2020-03-19 18:04:41 +00:00
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;====================================
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; check level over
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;====================================
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lda LEVEL_OVER
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bne really_exit
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2020-03-08 04:40:31 +00:00
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jmp game_loop
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2020-03-19 18:04:41 +00:00
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really_exit:
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jmp end_level
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2020-03-21 19:13:36 +00:00
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;==================================
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; elevator stuff
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;==================================
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basement_button:
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; flip switch
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lda #$80
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eor MECHE_ELEVATOR
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sta MECHE_ELEVATOR
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jsr adjust_basement_door
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jsr change_location
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rts
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adjust_basement_door:
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lda MECHE_ELEVATOR
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bmi floor_open
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floor_closed:
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jmp floor_closed_elevator_off
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floor_open:
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jmp floor_open_elevator_off
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floor_open_elevator_on:
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floor_open_elevator_off:
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ldy #LOCATION_WEST_EXIT
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lda #MECHE_BASEMENT
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sta location18,Y
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ldy #LOCATION_WEST_BG
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lda #<red_button_of_ce_w_lzsa
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sta location18,Y
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lda #>red_button_of_ce_w_lzsa
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jmp adjust_basement_door_done
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floor_closed_elevator_on:
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floor_closed_elevator_off:
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ldy #LOCATION_WEST_EXIT
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lda #$ff
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sta location18,Y
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ldy #LOCATION_WEST_BG
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lda #<red_button_cf_ce_w_lzsa
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sta location18,Y
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lda #>red_button_cf_ce_w_lzsa
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jmp adjust_basement_door_done
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adjust_basement_door_done:
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sta location18+1,Y
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rts
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adjust_fortress_rotation:
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rts
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2020-03-08 04:40:31 +00:00
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;==========================
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; includes
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;==========================
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.include "gr_copy.s"
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.include "gr_offsets.s"
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.include "gr_pageflip.s"
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.include "gr_putsprite_crop.s"
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.include "text_print.s"
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.include "gr_fast_clear.s"
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.include "decompress_fast_v2.s"
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.include "keyboard.s"
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.include "draw_pointer.s"
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2020-03-19 18:04:41 +00:00
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.include "end_level.s"
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2020-03-08 04:40:31 +00:00
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.include "audio.s"
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.include "graphics_meche/meche_graphics.inc"
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; puzzles
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; linking books
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2020-03-08 17:45:05 +00:00
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.include "link_book_meche.s"
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2020-03-21 19:13:36 +00:00
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.include "link_book_mist.s"
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2020-03-08 04:40:31 +00:00
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.include "common_sprites.inc"
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.include "leveldata_meche.inc"
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;.align $100
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2020-03-19 18:17:12 +00:00
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;audio_link_noise:
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;.incbin "audio/link_noise.btc"
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2020-03-08 04:40:31 +00:00
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