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142 lines
2.0 KiB
ArmAsm
142 lines
2.0 KiB
ArmAsm
; Riven -- Jungle Island, initial path
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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 "../qload.inc"
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.include "disk44_defines.inc"
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path_start:
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;===================
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; init screen
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;===================
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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 PAGE1
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bit HIRES
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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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lda #0
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sta JOYSTICK_ENABLED
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sta UPDATE_POINTER
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lda #1
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sta CURSOR_VISIBLE
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lda #20
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sta CURSOR_X
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sta CURSOR_Y
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;===================================
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; init
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;===================================
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; done in title
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; lda #$20
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; sta HGR_PAGE
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; jsr hgr_make_tables
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jsr change_location
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jsr save_bg_14x14 ; save old bg
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game_loop:
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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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; handle keypress/joystick
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;===================================
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jsr handle_keypress
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;===================================
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; increment frame count
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;===================================
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inc FRAMEL
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bne frame_no_oflo
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inc FRAMEH
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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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rts
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;==========================
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; handle split dir
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;==========================
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handle_split_dir1:
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; if 19 or less, go to $E0
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; if 20, do nothing
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; if 21 or more, go to $E1
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lda CURSOR_X
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cmp #21
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bcs go_right
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cmp #19
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bcc go_left
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rts
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go_left:
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lda #$E0
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sta LEVEL_OVER
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rts
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go_right:
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lda #$E1
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sta LEVEL_OVER
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rts
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;==========================
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; includes
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;==========================
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.include "graphics_path/path_graphics.inc"
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.include "leveldata_path.inc"
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