JMath::random

configure.py

@@ -900,7 +900,7 @@ config.libs = [
         "JMath",
         [
             Object(NonMatching, "JSystem/JMath/JMath.cpp"),
-            Object(NonMatching, "JSystem/JMath/random.cpp"),
+            Object(Matching,    "JSystem/JMath/random.cpp"),
         ],
     ),
     DolphinLib(

include/JSystem/JMath/random.h

@@ -29,6 +29,20 @@ struct TRandom_fast_ {
 
     void setSeed(u32 seed) { value = seed; }
 };
+
+struct TRandom_enough_ {
+    TRandom_enough_() { setSeed(0); }
+    void setSeed(u32 value);
+    f32 get();
+
+    void next_() {
+        field_0x0 = ((u64)field_0x0 * 0x41a7) % 0x7fffffff;
+    }
+
+    u32 field_0x0;
+    u32 field_0x4;
+    u32 field_0x8[32];
+};
 }  // namespace JMath
 
 #endif /* RANDOM_H */

src/JSystem/JMath/random.cpp

@@ -3,21 +3,38 @@
 // Translation Unit: random.cpp
 //
 
-#include "random.h"
+#include "JSystem/JMath/random.h"
 #include "dolphin/types.h"
 
 /* 80301350-80301358       .text __ct__Q25JMath13TRandom_fast_FUl */
-JMath::TRandom_fast_::TRandom_fast_(unsigned long) {
-    /* Nonmatching */
+JMath::TRandom_fast_::TRandom_fast_(u32 value) {
+    this->value = value;
 }
 
 /* 80301358-8030142C       .text setSeed__Q25JMath15TRandom_enough_FUl */
-void JMath::TRandom_enough_::setSeed(unsigned long) {
-    /* Nonmatching */
+void JMath::TRandom_enough_::setSeed(u32 value) {
+    field_0x4 = 0;
+    field_0x0 = value + 1;
+    if (field_0x0 == 0) {
+        field_0x0 += 1;
+    }
+    u32 i;
+    for (i = 8; i != 0; i--) {
+        next_();
+    }
+    for (i = 32; i != 0;) {
+        i--;
+        next_();
+        field_0x8[i] = field_0x0;
+    }
 }
 
 /* 8030142C-803014CC       .text get__Q25JMath15TRandom_enough_Fv */
-void JMath::TRandom_enough_::get() {
-    /* Nonmatching */
+f32 JMath::TRandom_enough_::get() {
+    next_();
+    u8 idx = (field_0x4 >> 24 & ~3) / 4;
+    field_0x4 = field_0x8[idx];
+    field_0x8[idx] = field_0x0;
+    f32 var3 = field_0x4 * 4.656613E-10f;
+    return var3 < 0.9999999f ? var3 : 0.9999999f;
 }
-