Fix float constants and conversions (#1279)

* Fix legoplants warnings, add BETA10 references

* Fix warnings in various header files, improve match

* Fix floats in legoactors.cpp

* Fix `legolocations.cpp`

* fix typo

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Co-authored-by: jonschz <jonschz@users.noreply.github.com>

LEGO1/lego/legoomni/src/actors/act2actor.cpp

@@ -444,6 +444,8 @@ MxS32 Act2Actor::VTable0xa0()
 {
 	undefined4 newLocation;
 
+	assert(!m_grec);
+
 	CurrentWorld();
 	MxU16 randomVal = rand() / (RAND_MAX / 2) + 1;