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/*
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------------------------------------------------------------------------------
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Licensing information can be found at the end of the file.
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------------------------------------------------------------------------------
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rnd.h - v1.0 - Pseudo-random number generators for C/C++.
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Do this:
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#define RND_IMPLEMENTATION
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before you include this file in *one* C/C++ file to create the implementation.
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*/
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#ifndef rnd_h
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#define rnd_h
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#ifndef RND_U32
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#define RND_U32 unsigned int
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#endif
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#ifndef RND_U64
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#define RND_U64 unsigned long long
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#endif
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typedef struct rnd_pcg_t { RND_U64 state[ 2 ]; } rnd_pcg_t;
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void rnd_pcg_seed( rnd_pcg_t* pcg, RND_U32 seed );
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RND_U32 rnd_pcg_next( rnd_pcg_t* pcg );
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float rnd_pcg_nextf( rnd_pcg_t* pcg );
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int rnd_pcg_range( rnd_pcg_t* pcg, int min, int max );
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typedef struct rnd_well_t { RND_U32 state[ 17 ]; } rnd_well_t;
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void rnd_well_seed( rnd_well_t* well, RND_U32 seed );
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RND_U32 rnd_well_next( rnd_well_t* well );
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float rnd_well_nextf( rnd_well_t* well );
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int rnd_well_range( rnd_well_t* well, int min, int max );
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typedef struct rnd_gamerand_t { RND_U32 state[ 2 ]; } rnd_gamerand_t;
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void rnd_gamerand_seed( rnd_gamerand_t* gamerand, RND_U32 seed );
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RND_U32 rnd_gamerand_next( rnd_gamerand_t* gamerand );
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float rnd_gamerand_nextf( rnd_gamerand_t* gamerand );
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int rnd_gamerand_range( rnd_gamerand_t* gamerand, int min, int max );
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typedef struct rnd_xorshift_t { RND_U64 state[ 2 ]; } rnd_xorshift_t;
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void rnd_xorshift_seed( rnd_xorshift_t* xorshift, RND_U64 seed );
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RND_U64 rnd_xorshift_next( rnd_xorshift_t* xorshift );
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float rnd_xorshift_nextf( rnd_xorshift_t* xorshift );
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int rnd_xorshift_range( rnd_xorshift_t* xorshift, int min, int max );
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#endif /* rnd_h */
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/**
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rnd.h
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=====
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Pseudo-random number generators for C/C++.
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Example
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-------
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A basic example showing how to use the PCG set of random functions.
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#define RND_IMPLEMENTATION
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#include "rnd.h"
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#include <stdio.h> // for printf
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#include <time.h> // for time
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int main( int argc, char** argv ) {
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rnd_pcg_t pcg;
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rnd_pcg_seed( &pcg, 0u ); // initialize generator
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// print a handful of random integers
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// these will be the same on every run, as we
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// seeded the rng with a fixed value
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for( int i = 0; i < 5; ++i ) {
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RND_U32 n = rnd_pcg_next( &pcg );
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printf( "%08x, ", n );
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}
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printf( "\n" );
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// reseed with a value which is different on each run
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time_t seconds;
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time( &seconds );
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rnd_pcg_seed( &pcg, (RND_U32) seconds );
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// print another handful of random integers
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// these will be different on every run
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for( int i = 0; i < 5; ++i ) {
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RND_U32 n = rnd_pcg_next( &pcg );
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printf( "%08x, ", n );
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}
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printf( "\n" );
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// print a handful of random floats
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for( int i = 0; i < 5; ++i ) {
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float f = rnd_pcg_nextf( &pcg );
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printf( "%f, ", f );
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}
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printf( "\n" );
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// print random integers in the range 1 to 6
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for( int i = 0; i < 15; ++i ) {
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int r = rnd_pcg_range( &pcg, 1, 6 );
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printf( "%d, ", r );
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}
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printf( "\n" );
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return 0;
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}
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API Documentation
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-----------------
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rnd.h is a single-header library, and does not need any .lib files or other binaries, or any build scripts. To use it,
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you just include rnd.h to get the API declarations. To get the definitions, you must include rnd.h from *one* single C
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or C++ file, and #define the symbol `RND_IMPLEMENTATION` before you do.
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The library is meant for general-purpose use, such as games and similar apps. It is not meant to be used for
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cryptography and similar use cases.
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### Customization
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rnd.h allows for specifying the exact type of 32 and 64 bit unsigned integers to be used in its API. By default, these
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default to `unsigned int` and `unsigned long long`, but can be redefined by #defining RND_U32 and RND_U64 respectively
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before including rnd.h. This is useful if you, for example, use the types from `<stdint.h>` in the rest of your program,
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and you want rnd.h to use compatible types. In this case, you would include rnd.h using the following code:
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#define RND_U32 uint32_t
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#define RND_U64 uint64_t
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#include "rnd.h"
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Note that when customizing the data type, you need to use the same definition in every place where you include rnd.h,
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as it affect the declarations as well as the definitions.
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### The generators
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The library includes four different generators: PCG, WELL, GameRand and XorShift. They all have different
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characteristics, and you might want to use them for different things. GameRand is very fast, but does not give a great
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distribution or period length. XorShift is the only one returning a 64-bit value. WELL is an improvement of the often
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used Mersenne Twister, and has quite a large internal state. PCG is small, fast and has a small state. If you don't
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have any specific reason, you may default to using PCG.
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All generators expose their internal state, so it is possible to save this state and later restore it, to resume the
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random sequence from the same point.
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#### PCG - Permuted Congruential Generator
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PCG is a family of simple fast space-efficient statistically good algorithms for random number generation. Unlike many
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general-purpose RNGs, they are also hard to predict.
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More information can be found here:
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http://www.pcg-random.org/
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#### WELL - Well Equidistributed Long-period Linear
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Random number generation, using the WELL algorithm by F. Panneton, P. L'Ecuyer and M. Matsumoto.
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More information in the original paper:
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http://www.iro.umontreal.ca/~panneton/WELLRNG.html
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This code is originally based on WELL512 C/C++ code written by Chris Lomont (published in Game Programming Gems 7)
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and placed in the public domain.
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http://lomont.org/Math/Papers/2008/Lomont_PRNG_2008.pdf
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#### GameRand
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Based on the random number generator by Ian C. Bullard:
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http://www.redditmirror.cc/cache/websites/mjolnirstudios.com_7yjlc/mjolnirstudios.com/IanBullard/files/79ffbca75a75720f066d491e9ea935a0-10.html
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GameRand is a random number generator based off an "Image of the Day" posted by Stephan Schaem. More information here:
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http://www.flipcode.com/archives/07-15-2002.shtml
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#### XorShift
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A random number generator of the type LFSR (linear feedback shift registers). This specific implementation uses the
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XorShift+ variation, and returns 64-bit random numbers.
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More information can be found here:
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https://en.wikipedia.org/wiki/Xorshift
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rnd_pcg_seed
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------------
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void rnd_pcg_seed( rnd_pcg_t* pcg, RND_U32 seed )
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Initialize a PCG generator with the specified seed. The generator is not valid until it's been seeded.
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rnd_pcg_next
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------------
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RND_U32 rnd_pcg_next( rnd_pcg_t* pcg )
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Returns a random number N in the range: 0 <= N <= 0xffffffff, from the specified PCG generator.
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rnd_pcg_nextf
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-------------
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float rnd_pcg_nextf( rnd_pcg_t* pcg )
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Returns a random float X in the range: 0.0f <= X < 1.0f, from the specified PCG generator.
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rnd_pcg_range
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-------------
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int rnd_pcg_range( rnd_pcg_t* pcg, int min, int max )
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Returns a random integer N in the range: min <= N <= max, from the specified PCG generator.
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rnd_well_seed
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-------------
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void rnd_well_seed( rnd_well_t* well, RND_U32 seed )
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Initialize a WELL generator with the specified seed. The generator is not valid until it's been seeded.
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rnd_well_next
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-------------
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RND_U32 rnd_well_next( rnd_well_t* well )
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Returns a random number N in the range: 0 <= N <= 0xffffffff, from the specified WELL generator.
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rnd_well_nextf
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--------------
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float rnd_well_nextf( rnd_well_t* well )
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Returns a random float X in the range: 0.0f <= X < 1.0f, from the specified WELL generator.
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rnd_well_range
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--------------
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int rnd_well_range( rnd_well_t* well, int min, int max )
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Returns a random integer N in the range: min <= N <= max, from the specified WELL generator.
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rnd_gamerand_seed
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-----------------
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void rnd_gamerand_seed( rnd_gamerand_t* gamerand, RND_U32 seed )
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Initialize a GameRand generator with the specified seed. The generator is not valid until it's been seeded.
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rnd_gamerand_next
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-----------------
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RND_U32 rnd_gamerand_next( rnd_gamerand_t* gamerand )
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Returns a random number N in the range: 0 <= N <= 0xffffffff, from the specified GameRand generator.
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rnd_gamerand_nextf
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------------------
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float rnd_gamerand_nextf( rnd_gamerand_t* gamerand )
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Returns a random float X in the range: 0.0f <= X < 1.0f, from the specified GameRand generator.
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rnd_gamerand_range
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------------------
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int rnd_gamerand_range( rnd_gamerand_t* gamerand, int min, int max )
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Returns a random integer N in the range: min <= N <= max, from the specified GameRand generator.
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rnd_xorshift_seed
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-----------------
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void rnd_xorshift_seed( rnd_xorshift_t* xorshift, RND_U64 seed )
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Initialize a XorShift generator with the specified seed. The generator is not valid until it's been seeded.
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rnd_xorshift_next
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-----------------
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RND_U64 rnd_xorshift_next( rnd_xorshift_t* xorshift )
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Returns a random number N in the range: 0 <= N <= 0xffffffffffffffff, from the specified XorShift generator.
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rnd_xorshift_nextf
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------------------
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float rnd_xorshift_nextf( rnd_xorshift_t* xorshift )
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Returns a random float X in the range: 0.0f <= X < 1.0f, from the specified XorShift generator.
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rnd_xorshift_range
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------------------
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int rnd_xorshift_range( rnd_xorshift_t* xorshift, int min, int max )
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Returns a random integer N in the range: min <= N <= max, from the specified XorShift generator.
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*/
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/*
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----------------------
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IMPLEMENTATION
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----------------------
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*/
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#ifdef RND_IMPLEMENTATION
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#undef RND_IMPLEMENTATION
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// Convert a randomized RND_U32 value to a float value x in the range 0.0f <= x < 1.0f. Contributed by Jonatan Hedborg
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static float rnd_internal_float_normalized_from_u32( RND_U32 value )
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{
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RND_U32 exponent = 127;
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RND_U32 mantissa = value >> 9;
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RND_U32 result = ( exponent << 23 ) | mantissa;
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float fresult = *(float*)( &result );
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return fresult - 1.0f;
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}
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static RND_U32 rnd_internal_murmur3_avalanche32( RND_U32 h )
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{
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h ^= h >> 16;
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h *= 0x85ebca6b;
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h ^= h >> 13;
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h *= 0xc2b2ae35;
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h ^= h >> 16;
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return h;
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}
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static RND_U64 rnd_internal_murmur3_avalanche64( RND_U64 h )
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{
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h ^= h >> 33;
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h *= 0xff51afd7ed558ccd;
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h ^= h >> 33;
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h *= 0xc4ceb9fe1a85ec53;
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h ^= h >> 33;
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return h;
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}
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void rnd_pcg_seed( rnd_pcg_t* pcg, RND_U32 seed )
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{
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RND_U64 value = ( ( (RND_U64) seed ) << 1ULL ) | 1ULL;
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value = rnd_internal_murmur3_avalanche64( value );
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pcg->state[ 0 ] = 0U;
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pcg->state[ 1 ] = ( value << 1ULL ) | 1ULL;
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rnd_pcg_next( pcg );
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pcg->state[ 0 ] += rnd_internal_murmur3_avalanche64( value );
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rnd_pcg_next( pcg );
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}
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RND_U32 rnd_pcg_next( rnd_pcg_t* pcg )
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{
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RND_U64 oldstate = pcg->state[ 0 ];
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pcg->state[ 0 ] = oldstate * 0x5851f42d4c957f2dULL + pcg->state[ 1 ];
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RND_U32 xorshifted = (RND_U32)( ( ( oldstate >> 18ULL) ^ oldstate ) >> 27ULL );
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RND_U32 rot = (RND_U32)( oldstate >> 59ULL );
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return ( xorshifted >> rot ) | ( xorshifted << ( ( -(int) rot ) & 31 ) );
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}
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float rnd_pcg_nextf( rnd_pcg_t* pcg )
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{
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return rnd_internal_float_normalized_from_u32( rnd_pcg_next( pcg ) );
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}
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int rnd_pcg_range( rnd_pcg_t* pcg, int min, int max )
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{
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int const range = ( max - min ) + 1;
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if( range <= 0 ) return min;
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int const value = (int) ( rnd_pcg_nextf( pcg ) * range );
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return min + value;
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}
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void rnd_well_seed( rnd_well_t* well, RND_U32 seed )
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{
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RND_U32 value = rnd_internal_murmur3_avalanche32( ( seed << 1U ) | 1U );
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well->state[ 16 ] = 0;
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well->state[ 0 ] = value ^ 0xf68a9fc1U;
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for( int i = 1; i < 16; ++i )
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well->state[ i ] = ( 0x6c078965U * ( well->state[ i - 1 ] ^ ( well->state[ i - 1 ] >> 30 ) ) + i );
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}
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||||
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RND_U32 rnd_well_next( rnd_well_t* well )
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{
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RND_U32 a = well->state[ well->state[ 16 ] ];
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RND_U32 c = well->state[ ( well->state[ 16 ] + 13 ) & 15 ];
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RND_U32 b = a ^ c ^ ( a << 16 ) ^ ( c << 15 );
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c = well->state[ ( well->state[ 16 ] + 9 ) & 15 ];
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c ^= ( c >> 11 );
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a = well->state[ well->state[ 16 ] ] = b ^ c;
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RND_U32 d = a ^ ( ( a << 5 ) & 0xda442d24U );
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well->state[ 16 ] = (well->state[ 16 ] + 15 ) & 15;
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a = well->state[ well->state[ 16 ] ];
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||||
well->state[ well->state[ 16 ] ] = a ^ b ^ d ^ ( a << 2 ) ^ ( b << 18 ) ^ ( c << 28 );
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return well->state[ well->state[ 16 ] ];
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||||
}
|
||||
|
||||
|
||||
float rnd_well_nextf( rnd_well_t* well )
|
||||
{
|
||||
return rnd_internal_float_normalized_from_u32( rnd_well_next( well ) );
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||||
}
|
||||
|
||||
|
||||
int rnd_well_range( rnd_well_t* well, int min, int max )
|
||||
{
|
||||
int const range = ( max - min ) + 1;
|
||||
if( range <= 0 ) return min;
|
||||
int const value = (int) ( rnd_well_nextf( well ) * range );
|
||||
return min + value;
|
||||
}
|
||||
|
||||
|
||||
void rnd_gamerand_seed( rnd_gamerand_t* gamerand, RND_U32 seed )
|
||||
{
|
||||
RND_U32 value = rnd_internal_murmur3_avalanche32( ( seed << 1U ) | 1U );
|
||||
gamerand->state[ 0 ] = value;
|
||||
gamerand->state[ 1 ] = value ^ 0x49616e42U;
|
||||
}
|
||||
|
||||
|
||||
RND_U32 rnd_gamerand_next( rnd_gamerand_t* gamerand )
|
||||
{
|
||||
gamerand->state[ 0 ] = ( gamerand->state[ 0 ] << 16 ) + ( gamerand->state[ 0 ] >> 16 );
|
||||
gamerand->state[ 0 ] += gamerand->state[ 1 ];
|
||||
gamerand->state[ 1 ] += gamerand->state[ 0 ];
|
||||
return gamerand->state[ 0 ];
|
||||
}
|
||||
|
||||
|
||||
float rnd_gamerand_nextf( rnd_gamerand_t* gamerand )
|
||||
{
|
||||
return rnd_internal_float_normalized_from_u32( rnd_gamerand_next( gamerand ) );
|
||||
}
|
||||
|
||||
|
||||
int rnd_gamerand_range( rnd_gamerand_t* gamerand, int min, int max )
|
||||
{
|
||||
int const range = ( max - min ) + 1;
|
||||
if( range <= 0 ) return min;
|
||||
int const value = (int) ( rnd_gamerand_nextf( gamerand ) * range );
|
||||
return min + value;
|
||||
}
|
||||
|
||||
|
||||
void rnd_xorshift_seed( rnd_xorshift_t* xorshift, RND_U64 seed )
|
||||
{
|
||||
RND_U64 value = rnd_internal_murmur3_avalanche64( ( seed << 1ULL ) | 1ULL );
|
||||
xorshift->state[ 0 ] = value;
|
||||
value = rnd_internal_murmur3_avalanche64( value );
|
||||
xorshift->state[ 1 ] = value;
|
||||
}
|
||||
|
||||
|
||||
RND_U64 rnd_xorshift_next( rnd_xorshift_t* xorshift )
|
||||
{
|
||||
RND_U64 x = xorshift->state[ 0 ];
|
||||
RND_U64 const y = xorshift->state[ 1 ];
|
||||
xorshift->state[ 0 ] = y;
|
||||
x ^= x << 23;
|
||||
x ^= x >> 17;
|
||||
x ^= y ^ ( y >> 26 );
|
||||
xorshift->state[ 1 ] = x;
|
||||
return x + y;
|
||||
}
|
||||
|
||||
|
||||
float rnd_xorshift_nextf( rnd_xorshift_t* xorshift )
|
||||
{
|
||||
return rnd_internal_float_normalized_from_u32( (RND_U32)( rnd_xorshift_next( xorshift ) >> 32 ) );
|
||||
}
|
||||
|
||||
|
||||
int rnd_xorshift_range( rnd_xorshift_t* xorshift, int min, int max )
|
||||
{
|
||||
int const range = ( max - min ) + 1;
|
||||
if( range <= 0 ) return min;
|
||||
int const value = (int) ( rnd_xorshift_nextf( xorshift ) * range );
|
||||
return min + value;
|
||||
}
|
||||
|
||||
|
||||
|
||||
#endif /* RND_IMPLEMENTATION */
|
||||
|
||||
/*
|
||||
|
||||
contributors:
|
||||
Jonatan Hedborg (unsigned int to normalized float conversion)
|
||||
|
||||
revision history:
|
||||
1.0 first publicly released version
|
||||
*/
|
||||
|
||||
/*
|
||||
------------------------------------------------------------------------------
|
||||
|
||||
This software is available under 2 licenses - you may choose the one you like.
|
||||
Based on public domain implementation - original licenses can be found next to
|
||||
the relevant implementation sections of this file.
|
||||
|
||||
------------------------------------------------------------------------------
|
||||
|
||||
ALTERNATIVE A - MIT License
|
||||
|
||||
Copyright (c) 2016 Mattias Gustavsson
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
this software and associated documentation files (the "Software"), to deal in
|
||||
the Software without restriction, including without limitation the rights to
|
||||
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
|
||||
of the Software, and to permit persons to whom the Software is furnished to do
|
||||
so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all
|
||||
copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
SOFTWARE.
|
||||
|
||||
------------------------------------------------------------------------------
|
||||
|
||||
ALTERNATIVE B - Public Domain (www.unlicense.org)
|
||||
|
||||
This is free and unencumbered software released into the public domain.
|
||||
|
||||
Anyone is free to copy, modify, publish, use, compile, sell, or distribute this
|
||||
software, either in source code form or as a compiled binary, for any purpose,
|
||||
commercial or non-commercial, and by any means.
|
||||
|
||||
In jurisdictions that recognize copyright laws, the author or authors of this
|
||||
software dedicate any and all copyright interest in the software to the public
|
||||
domain. We make this dedication for the benefit of the public at large and to
|
||||
the detriment of our heirs and successors. We intend this dedication to be an
|
||||
overt act of relinquishment in perpetuity of all present and future rights to
|
||||
this software under copyright law.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
||||
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
|
||||
------------------------------------------------------------------------------
|
||||
*/
|
||||
@ -1,28 +1,30 @@
|
||||
Urgent:
|
||||
- Fix everything about the shotgun, put shotgun away. Make them understand they're holding their shotgun more. REALLY look into characters not being able to shoot eachother
|
||||
- On startup if devtools print the estimated cost per generation request of the worst offending character
|
||||
- simple room transition system for angel/real map interop, angel room
|
||||
- angel character that gives you randomized goals such as (kill so and so) or (befriend blank) or (get john to go to other room), and decides itself with gpt when you're done with the game, when you've 'learned your lesson'.
|
||||
- room system where characters can go to rooms. camera constrained to room bounds, and know which rooms are near them to go to
|
||||
- REALLY look into characters not being able to shoot eachother
|
||||
- Silent threshold for each character from 0 to 1 that controls random chance after every eavesdropped dialog that the character says nothing in response
|
||||
- Tag memories from drama as permanent so they're never forgotten and always seed character behavior
|
||||
- gman character that gives you randomized goals such as (kill so and so) or (befriend blank) or (get john to go to other room), and decides itself with gpt when you're done with the game, when you've 'learned your lesson'.
|
||||
- make them understand they're holding their shotgun more
|
||||
- Fix everything about the shotgun, put shotgun away
|
||||
- can't interact with characters while they're thinking
|
||||
- fix stencil image being resized in web working
|
||||
- fix stencil image being resized working
|
||||
- bubbles collide with eachother so they can't overlap
|
||||
- set the game in oregon (suggestion by phillip)
|
||||
- nocodegen instead of codegen argument
|
||||
- camera pans to who is speaking and acting
|
||||
- E keyboard hints (tutorializing)
|
||||
- dot dot dot speech bubble to show that they heard your request, but are ignoring you.
|
||||
|
||||
Long distance:
|
||||
- nocodegen instead of codegen argument
|
||||
- Polygon and circle collision with cutec2 probably for the player being unable to collide with the camera bounds, and non axis aligned collision rects
|
||||
- set the game in oregon (suggestion by phillip)
|
||||
- Room system where characters can go to rooms. camera constrained to room bounds, and know which rooms are near them to go to
|
||||
- Design character creator (text input is always a modal, keeps code simple don't have to make a banger line edit)
|
||||
- Let ChatGPT file bug reports with something like !BugReport(This shouldn't be happening, developer. I killed them and they're still alive)
|
||||
- Cylindrical colliders for the people
|
||||
- System where I can upload any AI interaction into gpt playground and inspect the conversation
|
||||
- Incrementally higher resolution system for all textures, configured in a #define. Also flips the images at build time
|
||||
- Maybe check the hashes of the exported meshes if they all have the same name in the file, to attempt to detect identical geometry data. Same deal with textures in blender, or maybe in the game too actually.
|
||||
- Stop time when you talk to people
|
||||
- Much higher move accel, almost instantaneously goes to
|
||||
- Imgui Button doesn't move enough when highlighted
|
||||
- Higher res text instead of text scaling
|
||||
- Make space and shift also interact
|
||||
- Design character creator (text input is always a modal, keeps code simple don't have to make a banger line edit)
|
||||
|
||||
- Maybe walk by default and shift to run
|
||||
Loading…
Reference in New Issue