Link CRandom16.cpp

Makefile

@@ -102,7 +102,7 @@ ifeq ($(VERBOSE),0)
 # this set of LDFLAGS generates no warnings.
 LDFLAGS := $(MAPGEN) -fp fmadd -nodefaults -w off
 endif
-CFLAGS_1.2 = -proc gekko -nodefaults -Cpp_exceptions off -RTTI off -fp fmadd -str reuse,pool,readonly -O4,p -maxerrors 1 -use_lmw_stmw on -enum int -inline auto -MMD $(INCLUDES)
+CFLAGS_1.2 = -proc gekko -nodefaults -Cpp_exceptions off -RTTI off -fp fmadd -fp_contract on -str reuse,pool,readonly -O4,p -maxerrors 1 -use_lmw_stmw on -enum int -inline auto -MMD $(INCLUDES)
 CFLAGS_MUSYX = -proc gekko -nodefaults -Cpp_exceptions off -RTTI off -fp fmadd -str reuse,pool,readonly -O4,p -maxerrors 1 -enum int -inline auto -MMD $(INCLUDES)
 CFLAGS = $(CFLAGS_1.2) -gccinc -inline deferred,noauto
 

asm/Kyoto/CRandom16.s

@@ -2,11 +2,11 @@
 
 .section .sbss, "wa"
 
-.global lbl_805A9450
+.global gRandomNumber__9CRandom16
-lbl_805A9450:
+gRandomNumber__9CRandom16:
 	.skip 0x4
-.global lbl_805A9454
+.global gCurrentGlobalRandom__13CGlobalRandom
-lbl_805A9454:
+gCurrentGlobalRandom__13CGlobalRandom:
 	.skip 0x4
 
 .section .text, "ax"
@@ -101,12 +101,12 @@ __ct__9CRandom16FUi:
 
 .global _SetRandomNumber__9CRandom16FP9CRandom16
 _SetRandomNumber__9CRandom16FP9CRandom16:
-/* 803125F4 0030F554  90 6D A8 90 */	stw r3, lbl_805A9450@sda21(r13)
+/* 803125F4 0030F554  90 6D A8 90 */	stw r3, gRandomNumber__9CRandom16@sda21(r13)
 /* 803125F8 0030F558  4E 80 00 20 */	blr
 
 .global GetRandomNumber__9CRandom16Fv
 GetRandomNumber__9CRandom16Fv:
-/* 803125FC 0030F55C  80 6D A8 90 */	lwz r3, lbl_805A9450@sda21(r13)
+/* 803125FC 0030F55C  80 6D A8 90 */	lwz r3, gRandomNumber__9CRandom16@sda21(r13)
 /* 80312600 0030F560  4E 80 00 20 */	blr
 
 .global __dt__13CGlobalRandomFv
@@ -121,11 +121,11 @@ __dt__13CGlobalRandomFv:
 /* 80312620 0030F580  41 82 00 44 */	beq lbl_80312664
 /* 80312624 0030F584  80 7E 00 08 */	lwz r3, 8(r30)
 /* 80312628 0030F588  28 03 00 00 */	cmplwi r3, 0
-/* 8031262C 0030F58C  90 6D A8 94 */	stw r3, lbl_805A9454@sda21(r13)
+/* 8031262C 0030F58C  90 6D A8 94 */	stw r3, gCurrentGlobalRandom__13CGlobalRandom@sda21(r13)
 /* 80312630 0030F590  41 82 00 1C */	beq lbl_8031264C
 /* 80312634 0030F594  38 00 00 01 */	li r0, 1
 /* 80312638 0030F598  98 03 00 04 */	stb r0, 4(r3)
-/* 8031263C 0030F59C  80 6D A8 94 */	lwz r3, lbl_805A9454@sda21(r13)
+/* 8031263C 0030F59C  80 6D A8 94 */	lwz r3, gCurrentGlobalRandom__13CGlobalRandom@sda21(r13)
 /* 80312640 0030F5A0  80 63 00 00 */	lwz r3, 0(r3)
 /* 80312644 0030F5A4  4B FF FF B1 */	bl _SetRandomNumber__9CRandom16FP9CRandom16
 /* 80312648 0030F5A8  48 00 00 0C */	b lbl_80312654
@@ -156,7 +156,7 @@ __ct__13CGlobalRandomFR9CRandom16:
 /* 80312694 0030F5F4  7C 7F 1B 78 */	mr r31, r3
 /* 80312698 0030F5F8  90 83 00 00 */	stw r4, 0(r3)
 /* 8031269C 0030F5FC  98 03 00 04 */	stb r0, 4(r3)
-/* 803126A0 0030F600  80 0D A8 94 */	lwz r0, lbl_805A9454@sda21(r13)
+/* 803126A0 0030F600  80 0D A8 94 */	lwz r0, gCurrentGlobalRandom__13CGlobalRandom@sda21(r13)
 /* 803126A4 0030F604  90 03 00 08 */	stw r0, 8(r3)
 /* 803126A8 0030F608  80 63 00 08 */	lwz r3, 8(r3)
 /* 803126AC 0030F60C  28 03 00 00 */	cmplwi r3, 0
@@ -164,7 +164,7 @@ __ct__13CGlobalRandomFR9CRandom16:
 /* 803126B4 0030F614  38 00 00 00 */	li r0, 0
 /* 803126B8 0030F618  98 03 00 04 */	stb r0, 4(r3)
 lbl_803126BC:
-/* 803126BC 0030F61C  93 ED A8 94 */	stw r31, lbl_805A9454@sda21(r13)
+/* 803126BC 0030F61C  93 ED A8 94 */	stw r31, gCurrentGlobalRandom__13CGlobalRandom@sda21(r13)
 /* 803126C0 0030F620  80 7F 00 00 */	lwz r3, 0(r31)
 /* 803126C4 0030F624  4B FF FF 31 */	bl _SetRandomNumber__9CRandom16FP9CRandom16
 /* 803126C8 0030F628  80 01 00 14 */	lwz r0, 0x14(r1)

include/Kyoto/CRandom16.hpp

@@ -0,0 +1,34 @@
+#ifndef __CRANDOM16_HPP__
+#define __CRANDOM16_HPP__
+
+#include "types.h"
+
+class CRandom16;
+class CGlobalRandom {
+    static CGlobalRandom* gCurrentGlobalRandom;
+public:
+    CGlobalRandom(CRandom16& rnd);
+    ~CGlobalRandom();
+private:
+    CRandom16& mRandom;
+    bool mIsFirst;
+    CGlobalRandom* mPrev;
+};
+
+class CRandom16 {
+    friend class CGlobalRandom;
+    static CRandom16* gRandomNumber;
+    static void _SetRandomNumber(CRandom16* rnd);
+public:
+    static CRandom16* GetRandomNumber();
+    CRandom16(u32 seed = 99);
+    void SetSeed(u32 seed);
+    s32 Range(s32 min, s32 max);
+    float Range(float min, float max);
+    s32 Next();
+    float Float();
+private:
+    u32 mSeed;
+};
+
+#endif // __CRANDOM16_HPP__

obj_files.mk

@@ -526,7 +526,7 @@ KYOTO :=\
 	$(BUILD_DIR)/asm/Kyoto/Math/CMatrix3f.o\
 	$(BUILD_DIR)/asm/Kyoto/Math/CMatrix4f.o\
 	$(BUILD_DIR)/asm/Kyoto/Math/CQuaternion.o\
-	$(BUILD_DIR)/asm/Kyoto/CRandom16.o\
+	$(BUILD_DIR)/src/Kyoto/CRandom16.o\
 	$(BUILD_DIR)/asm/Kyoto/Math/CTransform4f.o\
 	$(BUILD_DIR)/asm/Kyoto/Math/CUnitVector3f.o\
 	$(BUILD_DIR)/asm/Kyoto/Math/CVector2f.o\

src/Kyoto/CRandom16.cpp

@@ -0,0 +1,46 @@
+#include "Kyoto/CRandom16.hpp"
+#include "Kyoto/Alloc/CMemory.hpp"
+
+CRandom16* CRandom16::gRandomNumber = nullptr;
+CGlobalRandom* CGlobalRandom::gCurrentGlobalRandom = nullptr;
+CGlobalRandom::CGlobalRandom(CRandom16& rnd) : mRandom(rnd) {
+  mIsFirst = true;
+  mPrev = gCurrentGlobalRandom;
+  if (mPrev != nullptr) {
+    mPrev->mIsFirst = false;
+  }
+
+  gCurrentGlobalRandom = this;
+  CRandom16::_SetRandomNumber(&mRandom);
+}
+
+CGlobalRandom::~CGlobalRandom() {
+  gCurrentGlobalRandom = mPrev;
+  if (gCurrentGlobalRandom != nullptr) {
+    gCurrentGlobalRandom->mIsFirst = true;
+    CRandom16::_SetRandomNumber(&gCurrentGlobalRandom->mRandom);
+  } else {
+    CRandom16::_SetRandomNumber(nullptr);
+  }
+}
+
+CRandom16* CRandom16::GetRandomNumber() { return gRandomNumber; }
+void CRandom16::_SetRandomNumber(CRandom16* rnd) { gRandomNumber = rnd; }
+
+CRandom16::CRandom16(u32 seed) : mSeed(seed) {}
+
+void CRandom16::SetSeed(u32 seed) { mSeed = seed; }
+
+s32 CRandom16::Range(s32 min, s32 max) { return min + (Next() % ((max - min) + 1)); }
+
+float CRandom16::Range(float min, float max) { return ((max - min) * Float()) + min; }
+
+s32 CRandom16::Next() {
+  mSeed = (mSeed * 0x41c64e6d) + 0x00003039;
+  return (mSeed >> 16) & 0xffff;
+}
+
+f32 CRandom16::Float() {
+  s32 next = Next();
+  return 1.52590222E-5f * next;
+}