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authorAndrei Karas <akaras@inbox.ru>2016-03-18 20:34:04 +0300
committerAndrei Karas <akaras@inbox.ru>2016-03-18 20:41:06 +0300
commitb5fead8f53a555b62c9de2dc23b0f2ce9a136e8e (patch)
treeb4b3be6ca5dec68b68cabf83dd21626b70707c08 /src/utils
parent5b293feb5367ccabd3edf49783511c895807876b (diff)
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Add custom rand function implimentation, based on precreated random sequence.
Diffstat (limited to 'src/utils')
-rw-r--r--src/utils/mrand.cpp45
-rw-r--r--src/utils/mrand.h30
2 files changed, 75 insertions, 0 deletions
diff --git a/src/utils/mrand.cpp b/src/utils/mrand.cpp
new file mode 100644
index 000000000..85b3e6b9c
--- /dev/null
+++ b/src/utils/mrand.cpp
@@ -0,0 +1,45 @@
+/*
+ * The ManaPlus Client
+ * Copyright (C) 2016 The ManaPlus Developers
+ *
+ * This file is part of The ManaPlus Client.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "utils/mrand.h"
+
+#include <cstdlib>
+
+#include "debug.h"
+
+namespace
+{
+ constexpr const int randNumbers = 1024;
+ int mPos = 0;
+ int mRand[randNumbers];
+} // namespace
+
+void initRand()
+{
+ for (int f = 0; f < randNumbers; f ++)
+ mRand[f] = std::rand();
+}
+
+int mrand()
+{
+ if (mPos >= randNumbers)
+ mPos = 0;
+ return mRand[++mPos];
+}
diff --git a/src/utils/mrand.h b/src/utils/mrand.h
new file mode 100644
index 000000000..11a3a22a8
--- /dev/null
+++ b/src/utils/mrand.h
@@ -0,0 +1,30 @@
+/*
+ * The ManaPlus Client
+ * Copyright (C) 2016 The ManaPlus Developers
+ *
+ * This file is part of The ManaPlus Client.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef UTILS_MRAND_H
+#define UTILS_MRAND_H
+
+#include "localconsts.h"
+
+void initRand();
+
+int mrand();
+
+#endif // UTILS_MRAND_H