195 lines
2.9 KiB
ArmAsm
195 lines
2.9 KiB
ArmAsm
; Viewer in the room by the dock
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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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.include "common_defines.inc"
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.include "common_routines.inc"
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viewer_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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;=================
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; set up location
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;=================
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lda #<locations
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sta LOCATIONS_L
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lda #>locations
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sta LOCATIONS_H
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lda #0
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sta DRAW_PAGE
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sta LEVEL_OVER
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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 ship backgrounds
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jsr setup_backgrounds
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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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lda #0
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sta ANIMATE_FRAME
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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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lda LOCATION
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cmp #VIEWER_CONTROL_PANEL
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beq control_panel
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cmp #VIEWER_POOL_CLOSE
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beq look_at_pool
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jmp reset_animation
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look_at_pool:
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jsr display_viewer
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jmp nothing_special
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control_panel:
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jsr display_panel_code
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jmp reset_animation
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reset_animation:
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lda #0
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sta ANIMATE_FRAME
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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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;====================================
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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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jmp game_loop
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really_exit:
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jmp end_level
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back_to_mist:
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lda #$ff
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sta LEVEL_OVER
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lda #MIST_ARRIVAL_DOCK ; the dock
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sta LOCATION
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lda #DIRECTION_E
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sta DIRECTION
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lda #LOAD_MIST
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sta WHICH_LOAD
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rts
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; handle ship up or down
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setup_backgrounds:
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lda SHIP_RAISED
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beq done_raised
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ldy #LOCATION_EAST_BG
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lda #<viewer_entrance_ship_e_lzsa
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sta location0,Y ; VIEWER_ENTRANCE
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lda #>viewer_entrance_ship_e_lzsa
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sta location0+1,Y ; VIEWER_ENTRANCE
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lda #<viewer_stairs_ship_e_lzsa
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sta location1,Y ; VIEWER_SHIP
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lda #>viewer_stairs_ship_e_lzsa
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sta location1+1,Y ; VIEWER_SHIP
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done_raised:
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rts
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;==========================
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; includes
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;==========================
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; graphics
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.include "graphics_viewer/viewer_graphics.inc"
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.include "number_sprites.inc"
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; puzzles
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.include "viewer_controls.s"
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; leveldata
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.include "leveldata_viewer.inc"
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