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51 lines
1.1 KiB
Plaintext
51 lines
1.1 KiB
Plaintext
;; A slightly bigger example of how to work with structs and arrays that change
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(use IO)
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(deftype Pos
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[x Float
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y Float])
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(defn incf [x]
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(Float.+ x 1.0f))
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(defmodule Pos
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(defn move [pos]
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(=> pos
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(Pos.update-x incf)
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(Pos.update-y incf))))
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(deftype Monster
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[pos Pos
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hp Int
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name String])
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(defmodule Monster
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(defn init-random [name]
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(Monster.init
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(Pos.init (Float.random-between 0.0f 100.0f)
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(Float.random-between 0.0f 100.0f))
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100
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@name))
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(defn move [monster]
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(Monster.update-pos monster Pos.move)))
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(defn main []
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(do
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; here we always use the same seed for determinism, for simple random
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; numbers that change you can for instance use (System.time)
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(System.seed-random 10)
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(let [monsters (Array.copy-map Monster.init-random &[@"Pegasus" @"Dragon" @"Devil"])]
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(do
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(println (ref (Array.str &monsters)))
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(let [new-monsters (Array.endo-map Monster.move monsters)]
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(println (ref (Array.str &new-monsters))))))
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0 ;; <- Return value, should not be needed?!
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))
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(build)
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(run)
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(quit)
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