Public Access
twislaandClaude Opus 5.5
68d50b320f
The rules of the three Games (issue #101), with no screen and no keyboard in them: time and keys go in, the new state and what happened come out, and a seed decides the dice. With a player for a tune a note at a time, and Korobeiniki's notes. Host-tested. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_0162FokPdvY2KsS4NBfwyWPk
26 lines
636 B
C++
26 lines
636 B
C++
#pragma once
|
|
|
|
#include <cstdint>
|
|
|
|
namespace roro::games {
|
|
|
|
// The Games' own dice (issue #101): the same seed gives the same game, which is what lets their
|
|
// rules be tested. xorshift32; never 0.
|
|
class Rng {
|
|
public:
|
|
explicit Rng(uint32_t seed) : s_(seed ? seed : 0x9E3779B9u) {}
|
|
uint32_t next() {
|
|
s_ ^= s_ << 13;
|
|
s_ ^= s_ >> 17;
|
|
s_ ^= s_ << 5;
|
|
return s_;
|
|
}
|
|
int below(int n) { return n <= 1 ? 0 : static_cast<int>(next() % static_cast<uint32_t>(n)); }
|
|
float unit() { return (next() >> 8) / 16777216.0f; } // 0 up to 1
|
|
|
|
private:
|
|
uint32_t s_;
|
|
};
|
|
|
|
} // namespace roro::games
|