Misc stuff 4 (#59)

* playrget progress and match treasuremanager remaining functions

* some docs

* fix build issues

* random docs

* match func_ov094_02172290

* random docs

* actor cleanup

* match freestanding item funcs

* mType -> mpProfile

* decompile random functions

* docs and start of wip chest stuff

* random docs

* more random docs

* match func_ov036_0211d0a8

* match func_ov036_0211d2dc & func_ov036_0211d570

* match func_ov110_02184a40

* random doc

* document letter/stamps system

* match func_ov001_020bb9f8

* fix build issues

* decompile tres

* start decomp chest base

* fix regressions

* name TRES

* name UnkStruct_ov024_020d86b0

* name stamp types and update save struct stuff

* name things and document BMG IDs

include/System/Random.hpp

@@ -40,7 +40,7 @@ struct Random {
         return (((this->GetRandomValue() >> 32) * (max - min)) >> 32) + min;
     }
 
-    u32 ConditionalNext32(u32 value) {
+    u16 ConditionalNext16(u32 value) {
         this->UpdateRandomValue();
 
         u64 result = this->GetRandomValue() >> 32;
@@ -52,6 +52,18 @@ struct Random {
         return result;
     }
 
+    u32 ConditionalNext32(u32 value) {
+        this->UpdateRandomValue();
+
+        u32 result = this->GetRandomValue() >> 32;
+
+        if (value != 0) {
+            return ((u64) result * value) >> 32;
+        }
+
+        return result;
+    }
+
     void Init();
 };