honeylisp/game/init.fnl

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(local util (require :lib.util))
(local {: lo : hi : readjson} util)
(local lume (require :lib.lume))
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(local tile (util.reload :game.tiles))
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(local {: prg : vm : org : mapw : maph} (util.reload :game.defs))
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(util.reload :game.gfx)
(util.reload :game.map)
(util.reload :game.entity)
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(local {: walkable} tile.flag-to-bit)
(vm:word :movement-dir ; key -- dyx
(vm:case [(string.byte "I") 0xff00]
[(string.byte "J") 0x00ff]
[(string.byte "K") 0x0001]
[(string.byte "M") 0x0100]
[:else 0x0000]))
(vm:def :yx+ ; yx yx -- yx
[:lda vm.TOP :x]
[:clc] [:adc vm.ST1 :x]
[:sta vm.ST1 :x]
[:lda vm.TOPH :x]
[:clc] [:adc vm.ST1H :x]
[:sta vm.ST1H :x]
(vm:drop))
(vm:var :jaye-yx 0x090a)
(vm:var :jaye-dir 0xff00)
(vm:word :jaye-tile ; ptile
:jaye-dir :get
(vm:case [0xff00 :lit :jaye-n]
[0x0100 :lit :jaye-s]
[0x00ff :lit :jaye-w]
[:else :lit :jaye-e]))
(vm:word :draw-jaye-yx ; yx --
:yx>screen :jaye-tile :drawtile)
(vm:word :handle-key :read-key :move-jaye)
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(vm:word :bump-jaye ; dir yx --
:yx+ ; yxnew
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:dup :touch-entity :not
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(vm:if
[:dup :itile-at :lookup-flags ; yxnew flags
walkable :& (vm:if [:move-player-to] [:drop])]
[:drop]))
(vm:word :move-player-to ; yx --
:jaye-yx :get :drawtile-at
:dup :jaye-yx :set
:yx>screen :jaye-tile :drawtile)
(vm:word :move-player ; --
:jaye-dir :get :jaye-yx :get :yx+ :move-player-to)
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(vm:word :move-jaye ; key --
:movement-dir :dup (vm:if [
:dup :jaye-dir :set ; dir
:jaye-yx :get ; dir yx
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:bump-jaye
] [:drop]))
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(vm:word :full-redraw :drawmap :object-redraw)
(vm:word :object-redraw :jaye-yx :get :draw-jaye-yx)
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(vm:def :draw-pchar ; pscreen pchar --
[:block
[:ldy 7] [:clc]
:loop
[:lda [vm.TOP :x]]
[:sta [vm.ST1 :x]]
[:inc vm.TOP :x]
[:lda vm.ST1H :x] [:adc 4] [:sta vm.ST1H :x]
[:dey]
[:bne :loop]
]
(vm:drop) (vm:drop))
(vm:def :lookup-pchar ; c -- pchar
[:sec]
[:lda vm.TOP :x]
[:sbc 0x20]
[:sta vm.TOP :x]
[:lda 0]
[:asl vm.TOP :x] [:rol :a] ;x2
[:asl vm.TOP :x] [:rol :a] ;x4
[:asl vm.TOP :x] [:rol :a] ;x8
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[:adc #(hi org.font.org)]
[:sta vm.TOPH :x])
(vm:word :draw-char ; pscreen c --
:lookup-pchar :draw-pchar)
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(vm:word :snooze (vm:for))
(vm:word :textsnooze 0x40 :snooze)
(vm:word :draw-text1 0x2257 :draw-text)
(vm:word :draw-text2 0x22d7 :draw-text)
(vm:word :draw-text3 0x2357 :draw-text)
(vm:word :draw-text4 0x23d7 :draw-text)
(vm:word :draw-text ; st pscreen --
(vm:while [:over :bget :dup] ; st pscreen c
:over :swap :draw-char ; st pscreen
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:textsnooze
:inc :swap :inc :swap)
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:drop :drop :drop)
(vm:word :cleartext
0x2257 :clearline 0x22d7 :clearline 0x2357 :clearline 0x23d7 :clearline)
(vm:word :wait-for-return (vm:until :read-key (string.byte "\r") :=))
(vm:word :dismiss-dialog :wait-for-return :cleartext)
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(tile.appendtiles org.tiles)
(tile.appendgfx org.font (tile.loadgfx tile.fn-font))
; thought:
; hotswap-safe debug stub at root of call stack
; but REPL debug stub should be very available as a task
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; 20x12 means full map is 240 bytes - we have an extra 16 bytes at the end to mess with?
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(vm.code:append :main
[:jsr :reset]
[:jsr :interpret]
[:vm :hires
:full-redraw
(vm:forever
(vm:hotswap-sync :full-redraw)
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:interactive-eval-checkpoint
:handle-key
)
:quit])
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(util.reload :game.level1)
(prg:assemble)
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