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Pheenoh
a61e3491f7
* initial freezard actor struct + setActionMode OK * daE_FZ_Draw * setReflectAngle * mBoundSoundset * daE_FZ_Execute & execute * demoDelete * daE_FZ_Delete & _delete * CreateHeap * useHeapInit * cc_set * mtx_set * action WIP * way_gake_check * executeRollMove * executeMove * draw WIP * executeDamage * checkpoint * create * checkpoint * daE_FZ_c::executeWait * checkpoint * daE_FZ_c::damage_check almost done * rm asm * rm headers * setup_profile WIP + doxygen update * fix merge issues * docs fix? * fix2 * doxygen updates * setup g_profile_E_FZ, profile setup script WIP * update github actions * update progress.md
45 lines
937 B
C++
45 lines
937 B
C++
#ifndef RANDOM_H
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#define RANDOM_H
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#include "dolphin/types.h"
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namespace JMath {
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/**
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* @ingroup jsystem-jmath
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*
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*/
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struct TRandom_fast_ {
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u32 value;
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TRandom_fast_(u32 value);
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u32 get(void) {
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value = (value * 0x19660d) + 0x3c6ef35f;
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return value;
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}
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u32 get_bit32(void) { return this->get(); }
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s8 get_uint8(u8 param_0) {
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return get_ufloat_1() * param_0;
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}
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// due to the float constant, having this function inlined adds that float to data,
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// making it not match
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float get_ufloat_1(void) {
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// !@bug UB: in C++ it's not legal to read from an union member other
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// than the last one that was written to.
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union {
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f32 f;
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u32 s;
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} out;
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out.s = (this->get() >> 9) | 0x3f800000;
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return out.f - 1;
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}
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void setSeed(u32 seed) { value = seed; }
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};
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} // namespace JMath
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#endif /* RANDOM_H */
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