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mapgen stuff

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This commit is contained in:
Perttu Ahola 2011-06-25 16:32:09 +03:00
parent e8a731adc5
commit aed9e809a1
7 changed files with 393 additions and 197 deletions
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39
src/noise.h
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@ -20,6 +20,45 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#ifndef NOISE_HEADER
#define NOISE_HEADER
#include "debug.h"
class PseudoRandom
{
public:
PseudoRandom(): m_next(0)
{
}
PseudoRandom(int seed): m_next(seed)
{
}
void seed(int seed)
{
m_next = seed;
}
// Returns 0...32767
int next()
{
m_next = m_next * 1103515245 + 12345;
return((unsigned)(m_next/65536) % 32768);
}
int range(int min, int max)
{
if(max-min > 32768/10)
{
//dstream<<"WARNING: PseudoRandom::range: max > 32767"<<std::endl;
assert(0);
}
if(min > max)
{
assert(0);
return max;
}
return (next()%(max-min+1))+min;
}
private:
int m_next;
};
double easeCurve(double t);
// Return value: -1 ... 1