diff --git a/DEFECTS.txt b/DEFECTS.txt
new file mode 100644
index 0000000..ff8accb
--- /dev/null
+++ b/DEFECTS.txt
@@ -0,0 +1,32 @@
+
+M3dMaths_SquareRoot0
+
+decomp:
+fild    [esp+8+arg_0]
+fstp    [esp+8+X]
+mov     eax, dword ptr [esp+8+X+4]
+mov     ecx, dword ptr [esp+8+X]
+push    eax
+push    ecx             ; X
+call    _sqrt
+add     esp, 8
+call    __ftol
+add     esp, 8
+retn
+
+
+original:
+fild    dword ptr [esp+8+arg_0]
+sub     esp, 8
+fstp    [esp+10h+var_8] ; DOUBLE not float
+fld     [esp+10h+var_8]
+fstp    [esp+10h+var_10] ; double
+call    _sqrt
+add     esp, 8
+call    __ftol
+add     esp, 8
+retn
+
+notes: the function calls are causes by consistent floats, but for some reason the current iteration of the code puts the values in registers. logically it does the same thing so for now i'll just ignore. already spent 12hours+ debugging this shit and can't understand what triggers it. one unexplored avenue is that it's using a fixed point abstraction.
+it's important to note the last `add esp, 8` is related to the conversion to double in the code that adds on the prologue a `sub esp, 8`. if you do a conversion to float and then to double the code will end up looking "similar" but don't fool yourself the opcodes are different.
+
diff --git a/m3d.cpp b/m3d.cpp
index 00af24f..035429d 100644
--- a/m3d.cpp
+++ b/m3d.cpp
@@ -1,5 +1,5 @@
 #include "m3d.h"
-#include <cmath>
+#include <math.h>
 
 int M3dMaths_SquareRoot0(int i){
 
@@ -11,6 +11,6 @@ int M3dMaths_SquareRoot0(int i){
         return 0;
     }
 
-	float tmp = (float)i;
-	return sqrt(tmp);
+	return (int)sqrt(i);
 }
+
diff --git a/m3d.h b/m3d.h
index 9b58220..4d4bdd3 100644
--- a/m3d.h
+++ b/m3d.h
@@ -5,5 +5,4 @@
 
 #include "export.h"
 
-
 EXPORT int M3dMaths_SquareRoot0(int i);
diff --git a/spider.dep b/spider.dep
new file mode 100644
index 0000000..dc43dff
--- /dev/null
+++ b/spider.dep
@@ -0,0 +1,23 @@
+# Microsoft Developer Studio Generated Dependency File, included by spider.mak
+
+.\friction.cpp : \
+	".\friction.h"\
+	
+
+.\m3d.cpp : \
+	".\export.h"\
+	".\m3d.h"\
+	
+
+.\main.cpp : \
+	"..\..\..\..\..\..\program files (x86)\microsoft visual studio\vc98\include\basetsd.h"\
+	".\export.h"\
+	".\friction.h"\
+	".\vector.h"\
+	
+
+.\vector.cpp : \
+	".\export.h"\
+	".\friction.h"\
+	".\vector.h"\
+	
diff --git a/spider.mak b/spider.mak
new file mode 100644
index 0000000..d305052
--- /dev/null
+++ b/spider.mak
@@ -0,0 +1,215 @@
+# Microsoft Developer Studio Generated NMAKE File, Based on spider.dsp
+!IF "$(CFG)" == ""
+CFG=spider - Win32 Debug
+!MESSAGE No configuration specified. Defaulting to spider - Win32 Debug.
+!ENDIF 
+
+!IF "$(CFG)" != "spider - Win32 Release" && "$(CFG)" != "spider - Win32 Debug"
+!MESSAGE Invalid configuration "$(CFG)" specified.
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE 
+!MESSAGE NMAKE /f "spider.mak" CFG="spider - Win32 Debug"
+!MESSAGE 
+!MESSAGE Possible choices for configuration are:
+!MESSAGE 
+!MESSAGE "spider - Win32 Release" (based on "Win32 (x86) Application")
+!MESSAGE "spider - Win32 Debug" (based on "Win32 (x86) Application")
+!MESSAGE 
+!ERROR An invalid configuration is specified.
+!ENDIF 
+
+!IF "$(OS)" == "Windows_NT"
+NULL=
+!ELSE 
+NULL=nul
+!ENDIF 
+
+!IF  "$(CFG)" == "spider - Win32 Release"
+
+OUTDIR=.\Release
+INTDIR=.\Release
+# Begin Custom Macros
+OutDir=.\Release
+# End Custom Macros
+
+ALL : "$(OUTDIR)\spider.exe"
+
+
+CLEAN :
+	-@erase "$(INTDIR)\friction.obj"
+	-@erase "$(INTDIR)\m3d.obj"
+	-@erase "$(INTDIR)\main.obj"
+	-@erase "$(INTDIR)\vc60.idb"
+	-@erase "$(INTDIR)\vector.obj"
+	-@erase "$(OUTDIR)\spider.exe"
+
+"$(OUTDIR)" :
+    if not exist "$(OUTDIR)/$(NULL)" mkdir "$(OUTDIR)"
+
+CPP=cl.exe
+CPP_PROJ=/nologo /MT /W3 /GX /O2 /Op /Ob2 /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_MBCS" /Fp"$(INTDIR)\spider.pch" /YX /Fo"$(INTDIR)\\" /Fd"$(INTDIR)\\" /FD /fp:strict /c 
+
+.c{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.c{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+MTL=midl.exe
+MTL_PROJ=/nologo /D "NDEBUG" /mktyplib203 /win32 
+RSC=rc.exe
+BSC32=bscmake.exe
+BSC32_FLAGS=/nologo /o"$(OUTDIR)\spider.bsc" 
+BSC32_SBRS= \
+	
+LINK32=link.exe
+LINK32_FLAGS=kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /incremental:no /pdb:"$(OUTDIR)\spider.pdb" /machine:I386 /out:"$(OUTDIR)\spider.exe" 
+LINK32_OBJS= \
+	"$(INTDIR)\friction.obj" \
+	"$(INTDIR)\m3d.obj" \
+	"$(INTDIR)\main.obj" \
+	"$(INTDIR)\vector.obj"
+
+"$(OUTDIR)\spider.exe" : "$(OUTDIR)" $(DEF_FILE) $(LINK32_OBJS)
+    $(LINK32) @<<
+  $(LINK32_FLAGS) $(LINK32_OBJS)
+<<
+
+!ELSEIF  "$(CFG)" == "spider - Win32 Debug"
+
+OUTDIR=.\Debug
+INTDIR=.\Debug
+# Begin Custom Macros
+OutDir=.\Debug
+# End Custom Macros
+
+ALL : "$(OUTDIR)\spider.exe"
+
+
+CLEAN :
+	-@erase "$(INTDIR)\friction.obj"
+	-@erase "$(INTDIR)\m3d.obj"
+	-@erase "$(INTDIR)\main.obj"
+	-@erase "$(INTDIR)\vc60.idb"
+	-@erase "$(INTDIR)\vector.obj"
+	-@erase "$(OUTDIR)\spider.exe"
+	-@erase "$(OUTDIR)\spider.ilk"
+	-@erase "$(OUTDIR)\spider.pdb"
+
+"$(OUTDIR)" :
+    if not exist "$(OUTDIR)/$(NULL)" mkdir "$(OUTDIR)"
+
+CPP=cl.exe
+CPP_PROJ=/nologo /MT /W3 /GX /O2 /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /D "_MBCS" /Fp"$(INTDIR)\spider.pch" /YX /Fo"$(INTDIR)\\" /Fd"$(INTDIR)\\" /FD /c 
+
+.c{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.c{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+MTL=midl.exe
+MTL_PROJ=/nologo /D "_DEBUG" /mktyplib203 /win32 
+RSC=rc.exe
+BSC32=bscmake.exe
+BSC32_FLAGS=/nologo /o"$(OUTDIR)\spider.bsc" 
+BSC32_SBRS= \
+	
+LINK32=link.exe
+LINK32_FLAGS=kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /incremental:yes /pdb:"$(OUTDIR)\spider.pdb" /debug /machine:I386 /out:"$(OUTDIR)\spider.exe" /pdbtype:sept 
+LINK32_OBJS= \
+	"$(INTDIR)\friction.obj" \
+	"$(INTDIR)\m3d.obj" \
+	"$(INTDIR)\main.obj" \
+	"$(INTDIR)\vector.obj"
+
+"$(OUTDIR)\spider.exe" : "$(OUTDIR)" $(DEF_FILE) $(LINK32_OBJS)
+    $(LINK32) @<<
+  $(LINK32_FLAGS) $(LINK32_OBJS)
+<<
+
+!ENDIF 
+
+
+!IF "$(NO_EXTERNAL_DEPS)" != "1"
+!IF EXISTS("spider.dep")
+!INCLUDE "spider.dep"
+!ELSE 
+!MESSAGE Warning: cannot find "spider.dep"
+!ENDIF 
+!ENDIF 
+
+
+!IF "$(CFG)" == "spider - Win32 Release" || "$(CFG)" == "spider - Win32 Debug"
+SOURCE=.\friction.cpp
+
+"$(INTDIR)\friction.obj" : $(SOURCE) "$(INTDIR)"
+
+
+SOURCE=.\m3d.cpp
+
+"$(INTDIR)\m3d.obj" : $(SOURCE) "$(INTDIR)"
+
+
+SOURCE=.\main.cpp
+
+"$(INTDIR)\main.obj" : $(SOURCE) "$(INTDIR)"
+
+
+SOURCE=.\vector.cpp
+
+"$(INTDIR)\vector.obj" : $(SOURCE) "$(INTDIR)"
+
+
+
+!ENDIF 
+
diff --git a/tips.txt b/tips.txt
index 873824e..976fdc1 100644
--- a/tips.txt
+++ b/tips.txt
@@ -1,3 +1,3 @@
 - ghidra-psx-loader has wrong alignment for structs
 - gcc operators here: https://github.com/gcc-mirror/gcc/blob/1b84dc3709f339801f34093ccece9f484ff2b60e/gcc/cp/operators.def
-- jumping usually is to code further away
+- jumping is to code further away