Match code_80040E50 (#220)

This required making some minor adjustments to a struct in
 common_structs.h, which further required a couple tiny updates to
 some functions in a couple other files. Nothing too crazy.

Signed-off-by: Taggerung <tyler.taggerung@gmail.com>

include/common_structs.h

@@ -473,7 +473,8 @@ typedef struct {
 typedef struct
 {
     /* 0x00 */ f32 unk_000;
-    /* 0x04 */ s8  unk_004[0x24];
+    /* 0x04 */ Vec3f unk_004;
+    /* 0x10 */ s8  unk_010[0x18];
     /* 0x28 */ f32 unk_028;
     /* 0x2C */ f32 unk_02C;
     /* 0x30 */ f32 unk_030;