Random debris generation

This commit is contained in:
Jeremy Penner 2021-01-24 11:32:49 -05:00
parent d4bd5302f7
commit e941fae745
7 changed files with 31 additions and 15 deletions

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@ -18,8 +18,5 @@
[:bne :sample]]
(vm:drop) (vm:drop))
(var noisebytes "")
(for [i 0 0x40] (set noisebytes (.. noisebytes (string.char (math.random 0 255)))))
(vm.code:append :noise [:bytes noisebytes])
(vm:word :snd-explode 0x40 :lit :noise :blipmem)
(vm:word :snd-explode 0x40 :lit :randombytes :blipmem)

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@ -116,6 +116,19 @@
[:sta vm.TOPH :x]
[:sta :0xc010]])
; "random" numbers
; this is used only for cosmetic purposes and short noise generation, so we can get away
; with just including a short table of random digits rather than implementing our own
; pseudorandom number generator
(var randombytes "")
(for [i 0 0x40] (set randombytes (.. randombytes (string.char (math.random 0 255)))))
(vm.code:append :randombytes [:bytes randombytes])
(vm:var :irandom [:db 0])
(vm:word :rnd
:irandom :bget
:dup 1 :+ 0x3f :& :irandom :bset
:lit :randombytes :+ :bget)
; 20x12 means full map is 240 bytes - we have an extra 16 bytes at the end for metadata
(fn append-map [map org label]
(org:append
@ -162,11 +175,10 @@
(table.insert result :dismiss-dialog)
result)
(local itile
(let [tilelist (tiles.loadgfx tiles.fn-tiles)]
(fn [label] (tiles.find-itile tilelist label))))
(local tilelist (tiles.loadgfx tiles.fn-tiles))
(fn itile [label] (tiles.find-itile tilelist label))
(set vm.code org.code)
{: vm : prg : mapw : maph : mon : org : achar : astr : style : rot8l : deflevel : say : say-runon : itile : controlstate}
{: vm : prg : mapw : maph : mon : org : achar : astr : style : rot8l : deflevel : say : say-runon : itile : tilelist : controlstate}

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@ -27,7 +27,7 @@
(vm:var :tick-count)
(vm:word :handle-key :tick :read-key :player-key :hide-footer)
(vm:word :tick :map-specific-tick :tick-count :get 1 :+ :tick-count :set :player-redraw)
(vm:word :tick :map-specific-tick :tick-count :get 1 :+ :tick-count :set :player-redraw :rnd :drop)
(vm:var :next-level 0)
(vm:word :load-next-level :next-level :get :dup (vm:if [:load-level 0 :next-level :set] [:drop]))

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@ -1,11 +1,16 @@
(local {: deflevel : say : itile : controlstate} (require :game.defs))
(local {: deflevel : say : itile : controlstate : tilelist} (require :game.defs))
(local {: ev} (require :game.entity))
(local tile (require :game.tiles))
(local {: walkable : neutable : debris : sittable} tile.flag-to-bit)
(local level (deflevel "game/map5.json" :level5))
(local vm level.vm)
(vm:word :randomgarbage (itile :broken-table))
(vm.code:append :debristiles)
(each [itile tiledef (ipairs tilelist)]
(when tiledef.flags.debris
(vm.code:append [:db (tile.encode-itile itile)])))
(vm:word :randomgarbage :rnd 0x03 :& :lit :debristiles :+ :bget)
(vm:var :doortimer 0)
(vm:word :start-doortimer 0x10 :doortimer :set)
(vm:word :doortimer-tick

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@ -1 +1 @@
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@ -53,14 +53,16 @@
(fn encode-yx [xy]
(if xy (bit.bor (bit.lshift (- xy.y 1) 8) (- xy.x 1)) 0xffff))
(fn encode-itile [itile]
(bit.bor (bit.lshift (bit.band (- itile 1) 0x07) 5) (bit.rshift (bit.band (- itile 1) 0xf8) 3)))
(fn find-itile [tiles label ?itilenext]
(local itile (or ?itilenext 1))
(local tile (. tiles itile))
(assert (not= tile nil) (.. "No such tile " label))
(if (= tile.label label)
(bit.bor (bit.lshift (bit.band (- itile 1) 0x07) 5) (bit.rshift (bit.band (- itile 1) 0xf8) 3))
(if (= tile.label label) (encode-itile itile)
(find-itile tiles label (+ itile 1))))
{: loadgfx : savegfx : appendtiles : appendgfx : flags : flag-to-bit : find-itile
: fn-tiles : fn-portraits : fn-font : encode-yx}
: fn-tiles : fn-portraits : fn-font : encode-yx : encode-itile}