Merge branch 'release-prepare/0.3.0'

[amulettoolsmh4/main.git] / model / randomgenerator.py

diff --git a/model/randomgenerator.py b/model/randomgenerator.py
new file mode 100644 (file)
index 0000000..a2a2bef
--- /dev/null
+++ b/model/randomgenerator.py
@@ -0,0 +1,28 @@
+# -*- coding: utf-8 -*-
+
+# random generator for MH4
+# データベース関連の定数値など
+# 2013/12/18 written by kei9 
+
+# import modules
+import mh4constnumbers
+
+class RandomGenerator():
+    u""" MH4での乱数生成器 """
+    COEFFICIENT = 176
+    DIVISOR = 65363
+
+    def __init__(self, seed):
+        self._first_seed = seed
+        self._next_seed = seed
+
+    def get_next(self):
+        u""" 前回の乱数値より次の乱数値を計算する """
+        self._next_seed = self._get_next_rand(self._next_seed)
+        return self._next_seed
+
+    def _get_next_rand(self, seed):
+        u""" 指定されたseedから乱数を生成する """
+        return seed * self.COEFFICIENT % self.DIVISOR
+
+