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annotate clojure/com/aurellem/run/util.clj @ 325:a5cdb2f76307

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improved efficiency of set-cursor
author Robert McIntyre <rlm@mit.edu>
date Wed, 04 Apr 2012 03:25:14 -0500
parents 9637a0f52e7b
children fe6fd2323264
rev   line source
rlm@313 1 (ns com.aurellem.run.util
rlm@314 2 (:use (com.aurellem.gb util gb-driver vbm characters saves))
rlm@313 3 (:import [com.aurellem.gb.gb_driver SaveState]))
rlm@313 4
rlm@313 5 (def ↑ [:u])
rlm@313 6 (def ↓ [:d])
rlm@313 7 (def ← [:l])
rlm@313 8 (def → [:r])
rlm@313 9
rlm@318 10 [↑ ↓ ← →]
rlm@318 11
rlm@313 12 (defn first-difference
rlm@313 13 [base alt difference-metric [moves root :as script]]
rlm@313 14 (loop [branch-point root
rlm@313 15 actions moves]
rlm@313 16 (let [base-branch (step branch-point base)
rlm@313 17 base-val (difference-metric base-branch)
rlm@313 18 alt-branch (step branch-point alt)
rlm@313 19 alt-val (difference-metric alt-branch)]
rlm@313 20 (if (not= base-val alt-val)
rlm@313 21 [(conj actions alt) alt-branch]
rlm@313 22 (recur base-branch (conj actions base))))))
rlm@313 23
rlm@313 24 (defn repeat-until-different
rlm@314 25 [buttons metric [moves root :as script]]
rlm@313 26 (let [baseline (metric root)]
rlm@313 27 (loop [actions (vec moves)
rlm@313 28 state root]
rlm@313 29 (let [new-state (step state buttons)
rlm@313 30 new-actions (conj actions buttons)]
rlm@313 31 (if (not= (metric new-state) baseline)
rlm@313 32 [new-actions new-state]
rlm@313 33 (recur new-actions new-state))))))
rlm@313 34
rlm@316 35 (defn binary-search [metric]
rlm@316 36 (let [baseline (metric 0)]
rlm@316 37 (loop [low 1
rlm@316 38 high 2]
rlm@316 39 (let [low-val (metric low)
rlm@316 40 high-val (metric high)]
rlm@316 41 (println low high)
rlm@316 42 (cond
rlm@316 43 ;; base case
rlm@316 44 (and (= low (dec high))
rlm@316 45 (not= low-val high-val))
rlm@316 46 high
rlm@316 47 ;; exponential growth
rlm@316 48 (= baseline high-val low-val)
rlm@316 49 (recur high (* high 2))
rlm@316 50
rlm@316 51 ;; binary search
rlm@316 52 (and (= baseline low-val)
rlm@316 53 (not= baseline high-val))
rlm@316 54 (let [test (int (/ (+ low high) 2))
rlm@316 55 test-val (metric test)]
rlm@316 56 (if (= test-val baseline)
rlm@316 57 (recur test high)
rlm@316 58 (recur low test))))))))
rlm@316 59
rlm@316 60 (defn delayed-difference
rlm@316 61 [base alt delay difference-metric [moves root :as script]]
rlm@316 62 (let [generator
rlm@316 63 (memoize
rlm@316 64 (fn [n]
rlm@316 65 (run-moves
rlm@316 66 root
rlm@316 67 (repeat n base))))
rlm@316 68 len
rlm@316 69 (binary-search
rlm@316 70 (fn [n]
rlm@316 71 (= (difference-metric
rlm@316 72 (run-moves
rlm@316 73 (generator n)
rlm@316 74 (concat [alt] (repeat delay base))))
rlm@316 75 (difference-metric
rlm@316 76 (run-moves
rlm@316 77 (generator n)
rlm@316 78 (repeat (inc delay) base))))))
rlm@316 79 new-moves (concat moves (repeat len base) [alt])
rlm@316 80 new-state (run-moves (generator len) [alt])]
rlm@316 81 [new-moves new-state]))
rlm@316 82
rlm@313 83 (def x-position-address 0xD361)
rlm@313 84 (def y-position-address 0xD362)
rlm@313 85
rlm@313 86 (defn x-position
rlm@313 87 ([^SaveState state]
rlm@313 88 (aget (memory state) x-position-address))
rlm@313 89 ([] (x-position @current-state)))
rlm@313 90
rlm@313 91 (defn y-position
rlm@313 92 ([^SaveState state]
rlm@313 93 (aget (memory state) y-position-address))
rlm@313 94 ([] (y-position @current-state)))
rlm@313 95
rlm@313 96 (defn move
rlm@313 97 [dir script]
rlm@313 98 (let [current-position-fn
rlm@313 99 (cond (#{← →} dir) x-position
rlm@313 100 (#{↑ ↓} dir) y-position)]
rlm@313 101 (repeat-until-different dir current-position-fn script)))
rlm@313 102
rlm@313 103 (defn walk
rlm@313 104 "Move the character along the given directions."
rlm@313 105 [directions script]
rlm@313 106 (reduce (fn [script dir]
rlm@313 107 (move dir script)) script directions))
rlm@313 108
rlm@313 109 (defn search-string
rlm@320 110 ([^SaveState state string]
rlm@320 111 (let [codes
rlm@320 112 (str->character-codes string)
rlm@320 113 codes-length (count codes)
rlm@320 114 mem (vec (memory state))
rlm@320 115 mem-length (count mem)]
rlm@320 116 (loop [idx 0]
rlm@320 117 (if (< (- mem-length idx) codes-length)
rlm@320 118 nil
rlm@320 119 (if (= (subvec mem idx (+ idx codes-length))
rlm@320 120 codes)
rlm@320 121 idx
rlm@320 122 (recur (inc idx)))))))
rlm@320 123 ([string]
rlm@320 124 (search-string @current-state string)))
rlm@313 125
rlm@314 126 (def text-address 0x9DC1)
rlm@314 127
rlm@314 128 (defn displayed-text
rlm@314 129 ([^SaveState state]
rlm@314 130 (character-codes->str
rlm@314 131 (subvec (vec (memory state))
rlm@314 132 text-address
rlm@314 133 (+ text-address 82))))
rlm@314 134 ([] (displayed-text @current-state)))
rlm@314 135
rlm@314 136 (defn scroll-text
rlm@314 137 ([script]
rlm@314 138 (delayed-difference
rlm@314 139 [:b] [:a :b] 25 displayed-text script))
rlm@314 140 ([n script]
rlm@314 141 (reduce (fn [script _]
rlm@314 142 (scroll-text script))
rlm@314 143 script
rlm@314 144 (range n))))
rlm@314 145
rlm@319 146 (defn end-text
rlm@319 147 ([script]
rlm@320 148 (->>
rlm@320 149 script
rlm@320 150 (do-nothing 150)
rlm@320 151 (play-moves [[:b]]))))
rlm@319 152
rlm@313 153 (defn do-nothing [n script]
rlm@313 154 (->> script
rlm@313 155 (play-moves
rlm@313 156 (repeat n []))))
rlm@313 157
rlm@318 158 (defn delayed-improbability-search
rlm@318 159 "insert blank frames before calling script-fn until
rlm@318 160 metric returns true."
rlm@318 161 [delay metric script-fn script]
rlm@318 162 (loop [blanks 0]
rlm@318 163 (let [new-script
rlm@318 164 (->> script
rlm@318 165 (play-moves
rlm@318 166 (concat (repeat blanks [])))
rlm@318 167 script-fn)
rlm@318 168 future-state
rlm@318 169 (run-moves (second new-script)
rlm@318 170 (repeat delay []))
rlm@318 171 result (metric future-state)]
rlm@318 172 (if result
rlm@318 173 (do
rlm@318 174 (println "improbability factor:" blanks)
rlm@318 175 new-script)
rlm@318 176 (recur (inc blanks))))))
rlm@313 177
rlm@313 178 (defn critical-hit
rlm@313 179 "Put the cursor over the desired attack. This program will
rlm@313 180 determine the appropriate amount of blank frames to
rlm@313 181 insert before pressing [:a] to ensure that the attack is
rlm@313 182 a critical hit."
rlm@313 183 [script]
rlm@318 184 (delayed-improbability-search
rlm@318 185 400
rlm@318 186 #(search-string % "Critical")
rlm@318 187 (partial play-moves [[:a][]])
rlm@318 188 script))
rlm@313 189
rlm@313 190 (defn move-thru-grass
rlm@313 191 [direction script]
rlm@318 192 (delayed-improbability-search
rlm@318 193 600
rlm@318 194 #(nil? (search-string % "Wild"))
rlm@318 195 (partial move direction)
rlm@318 196 script))
rlm@313 197
rlm@313 198 (defn walk-thru-grass
rlm@313 199 [directions script]
rlm@313 200 (reduce (fn [script direction]
rlm@313 201 (move-thru-grass direction script))
rlm@313 202 script directions))
rlm@313 203
rlm@313 204 (defn slowly
rlm@313 205 [delay moves script]
rlm@313 206 (reduce
rlm@313 207 (fn [script move]
rlm@313 208 (->> script
rlm@313 209 (do-nothing delay)
rlm@313 210 (play-moves (vector move))))
rlm@313 211 script moves))
rlm@313 212
rlm@313 213 (defn multiple-times
rlm@313 214 ([n command args script]
rlm@313 215 (reduce (fn [script _]
rlm@313 216 (apply command (concat args [script])))
rlm@313 217 script
rlm@313 218 (range n)))
rlm@313 219 ([n command script]
rlm@313 220 (multiple-times n command [] script)))