61 lines
2 KiB
Fennel
61 lines
2 KiB
Fennel
(local util (require :lib.util))
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(local lume (require :lib.lume))
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(local flags [:walkable :neutable :debris :sittable])
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(local flag-to-bit {})
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(each [iflag flag (ipairs flags)]
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(tset flag-to-bit flag (bit.lshift 1 (- iflag 1))))
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(fn deserialize [tile]
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(match (type tile)
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:string {:gfx (tile:fromhex) :flags {}}
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:table (doto tile (tset :gfx (tile.gfx:fromhex)))))
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(fn serialize [tile] (doto (lume.clone tile) (tset :gfx (tile.gfx:tohex))))
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(local fn-tiles "game/tiles.json")
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(local fn-portraits "game/portraits.json")
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(local fn-font "game/font.json")
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(fn loadgfx [filename] (lume.map (util.readjson filename) deserialize))
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(fn savegfx [filename gfx] (util.writejson filename (lume.map gfx serialize)))
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(fn appendgfx [org gfx]
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(each [_ g (ipairs gfx)]
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(when g.label (org:append g.label))
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(org:append [:bytes g.gfx])))
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(fn appendtiles [org]
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(local tiles (loadgfx fn-tiles))
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(appendgfx org tiles)
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(appendgfx org (loadgfx fn-portraits))
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(org:append :tileflags)
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(each [_ tile (ipairs tiles)]
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(var flags 0)
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(each [flag _ (pairs tile.flags)]
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(set flags (bit.bor flags (. flag-to-bit flag))))
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(org:append [:db flags])))
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(fn encode-yx [xy]
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(if xy (bit.bor (bit.lshift (- xy.y 1) 8) (- xy.x 1)) 0xffff))
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(fn append-map [map org]
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(org:append
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:map [:bytes (map.map:fromhex)]
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:map-entity-count [:db (length map.objects)]
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:map-jaye-yx [:dw (encode-yx map.jaye)]
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:map-neut-yx [:dw (encode-yx map.neut)]
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:map-gord-yx [:dw (if map.gord-following (encode-yx map.jaye) 0xffff)]))
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(fn find-itile [tiles label ?itilenext]
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(local itile (or ?itilenext 1))
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(local tile (. tiles itile))
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(assert (not= tile nil) (.. "No such tile " label))
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(if (= tile.label label)
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(bit.bor (bit.lshift (bit.band (- itile 1) 0x07) 5) (bit.rshift (bit.band (- itile 1) 0xf8) 3))
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(find-itile tiles label (+ itile 1))))
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{: loadgfx : savegfx : appendtiles : appendgfx : append-map : flags : flag-to-bit : find-itile
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: fn-tiles : fn-portraits : fn-font : encode-yx}
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