From 1ccd3488a0c946b2ad4c0e525d91dcf96d1ca707 Mon Sep 17 00:00:00 2001
From: jbzdarkid <jbzdarkid@gmail.com>
Date: Wed, 4 Dec 2019 17:44:38 -0800
Subject: helper func + bug fix

---
 Source/Random.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'Source/Random.h')

diff --git a/Source/Random.h b/Source/Random.h
index e809c1e..36b6dc1 100644
--- a/Source/Random.h
+++ b/Source/Random.h
@@ -6,6 +6,20 @@ public:
     static void SetSeed(int seed);
     static int RandInt(int min, int max);
 
+    template <typename T>
+    static std::vector<T> SelectFromSet(std::vector<T> set, size_t count) {
+        size_t setSize = set.size();
+        assert(count < setSize);
+        std::vector<T> selection;
+        for (int i=0; i<count && i<setSize; i++) {
+            int index = Random::RandInt(0, static_cast<int>(setSize - 1));
+            selection.emplace_back(set[index]);
+            set[index] = set[setSize-1];
+            setSize--;
+        }
+        return selection;
+    }
+
 private:
     static uint32_t s_seed;
 };
-- 
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