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changed robot acceleration calc to use Java Math/copySign function

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Richard Harrington 2013-08-23 10:53:33 -04:00
parent 0945151aab
commit cc1dee5418
1 changed files with 2 additions and 2 deletions
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4
src/robotwar/robot.clj
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@ -25,8 +25,8 @@
"takes a robot and returns it, moved through space.
helper function for tick-robot."
[{:keys [pos-x pos-y v-x v-y desired-v-x desired-v-y] :as robot}]
(let [max-accel-x (if (neg? desired-v-x) (- MAX-ACCEL) MAX-ACCEL)
max-accel-y (if (neg? desired-v-y) (- MAX-ACCEL) MAX-ACCEL)
(let [max-accel-x (Math/copySign MAX-ACCEL desired-v-x)
max-accel-y (Math/copySign MAX-ACCEL desired-v-y)
{new-pos-x :d, new-v-x :v} (physics/d-and-v-given-desired-v
pos-x
v-x