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author | chirs241097@gmail.com <chirs241097@gmail.com@c17bf020-1265-9734-9302-a83f62007ddb> | 2014-01-12 14:43:14 +0000 |
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committer | chirs241097@gmail.com <chirs241097@gmail.com@c17bf020-1265-9734-9302-a83f62007ddb> | 2014-01-12 14:43:14 +0000 |
commit | c91847d549cc1c30eb15504a15ea9a6d5aa48165 (patch) | |
tree | b978d575f08f5f87d3c21eb9a024164636d1918a /hge/random.cpp | |
download | bullet-lab-remix-c91847d549cc1c30eb15504a15ea9a6d5aa48165.tar.xz |
Diffstat (limited to 'hge/random.cpp')
-rw-r--r-- | hge/random.cpp | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/hge/random.cpp b/hge/random.cpp new file mode 100644 index 0000000..ab9956a --- /dev/null +++ b/hge/random.cpp @@ -0,0 +1,31 @@ +/* +** Haaf's Game Engine 1.8 +** Copyright (C) 2003-2007, Relish Games +** hge.relishgames.com +** +** Core functions implementation: random number generation +*/ + + +#include "hge_impl.h" + +unsigned int g_seed=0; + +void CALL HGE_Impl::Random_Seed(int seed) +{ + if(!seed) g_seed=timeGetTime(); + else g_seed=seed; +} + +int CALL HGE_Impl::Random_Int(int min, int max) +{ + g_seed=214013*g_seed+2531011; + return min+(g_seed ^ g_seed>>15)%(max-min+1); +} + +float CALL HGE_Impl::Random_Float(float min, float max) +{ + g_seed=214013*g_seed+2531011; + //return min+g_seed*(1.0f/4294967295.0f)*(max-min); + return min+(g_seed>>16)*(1.0f/65535.0f)*(max-min); +} |