d_envse mostly OK. more work on kankyo_rain (#1969)

* d_envse OK, work on kankyo_rain

* remove asm

include/SSystem/SComponent/c_bg_s_gnd_chk.h

@@ -19,7 +19,6 @@ public:
     const cXyz& GetPointP() { return m_pos; }
     u32 GetWallPrecheck() const { return mWallPrecheck; }
 
-private:
     /* 0x24 */ cXyz m_pos;
     /* 0x30 */ u32 mFlags;
     /* 0x34 */ f32 mNowY;

include/SSystem/SComponent/c_m3d.h

@@ -3,6 +3,7 @@
 
 #include "MSL_C/math.h"
 #include "dolphin/types.h"
+#include "dolphin/mtx/vec.h"
 
 class cM3dGAab;
 class cM3dGCps;
@@ -95,4 +96,8 @@ inline bool cM3d_IsZero_inverted(f32 param_0) {
     return !(fabsf(param_0) < G_CM3D_F_ABS_MIN);
 }
 
+inline f32 cM3d_LenSq(const Vec* a, const Vec* b) {
+    return VECSquareDistance(a, b);
+}
+
 #endif

include/SSystem/SComponent/c_m3d_g_lin.h

@@ -20,6 +20,8 @@ public:
     void CalcPos(Vec*, f32) const;
     void CalcVec(Vec* pOut) const { VECSubtract(&this->mEnd, &this->mStart, pOut); }
     void SetEnd(const cXyz&);
+
+    void set(const Vec& i_start, const Vec& i_end) { SetStartEnd(i_start, i_end); }
     const cXyz& GetStartP(void) const { return mStart; }
     cXyz& GetStartP(void) { return mStart; }
     const cXyz& GetEndP(void) const { return mEnd; }