import random_u16 to sm64, match random_s32, and match actor func (#203)

* import random_u16 and atans from sm64

* rand math decomp

* Match func_80298AC0

include/actor_types.h

@@ -123,6 +123,14 @@ struct ActorSpawnData {
     /* 0x06 */ u16 someId; // Usually populated, but not necessarily used by all actors types
 };
 
+// Required for func_80298AC0 due to diff size.
+// members unverified. data located at D_06013F78
+struct UnkActorSpawnData {
+    /* 0x00 */ Vec3s pos;
+    /* 0x06 */ u16 someId; // Usually populated, but not necessarily used by all actors types
+    /* 0x08 */ u16 unk8;
+};
+
 struct YoshiValleyEgg {
     /* 0x00 */ s16 type;
     /* 0x02 */ s16 flags;

include/functions.h

@@ -3,7 +3,7 @@
 
 #include "common_structs.h"
 
-s32 random_int(s32);
+s32 random_int(u16);
 void mio0decode(u8* arg0, u8* arg1);
 
 void func_8000F2DC(void);