diff --git a/config/SOUE01/splits.txt b/config/SOUE01/splits.txt
index 4973c05f..09ef2ec0 100644
--- a/config/SOUE01/splits.txt
+++ b/config/SOUE01/splits.txt
@@ -208,6 +208,11 @@ f/f_manager.cpp:
 	.sbss       start:0x80575BB8 end:0x80575BC0
 	.bss        start:0x805B84D8 end:0x805B8588
 
+m/m_angle.cpp:
+	.text       start:0x802EE5F0 end:0x802EE6B8
+	.ctors      start:0x804DB8CC end:0x804DB8D0
+	.sbss       start:0x80575C08 end:0x80575C10
+
 m/m_heap.cpp:
 	.text       start:0x802F0F00 end:0x802F1660
 	.rodata     start:0x804F0570 end:0x804F0580
diff --git a/config/SOUE01/symbols.txt b/config/SOUE01/symbols.txt
index f3114665..f5a96a71 100644
--- a/config/SOUE01/symbols.txt
+++ b/config/SOUE01/symbols.txt
@@ -17710,8 +17710,8 @@ fn_802EE4A0 = .text:0x802EE4A0; // type:function size:0x70
 fn_802EE510 = .text:0x802EE510; // type:function size:0x4C
 adjustFrmHeapRestoreCurrent__16mHeapAllocator_cFv = .text:0x802EE560; // type:function size:0x64
 fn_802EE5D0 = .text:0x802EE5D0; // type:function size:0x1C
-fn_802EE5F0 = .text:0x802EE5F0; // type:function size:0xA4
-fn_802EE6A0 = .text:0x802EE6A0; // type:function size:0x18
+step__4mAngFsiss = .text:0x802EE5F0; // type:function size:0xA4
+__sinit_\m_angle_cpp = .text:0x802EE6A0; // type:function size:0x18 scope:local
 fn_802EE6C0 = .text:0x802EE6C0; // type:function size:0x114
 fn_802EE7E0 = .text:0x802EE7E0; // type:function size:0x44
 fn_802EE830 = .text:0x802EE830; // type:function size:0x58
@@ -40251,7 +40251,7 @@ lbl_80575BF4 = .sbss:0x80575BF4; // type:object size:0x4 data:4byte
 lbl_80575BF8 = .sbss:0x80575BF8; // type:object size:0x4 data:4byte
 lbl_80575BFC = .sbss:0x80575BFC; // type:object size:0x1 data:byte
 lbl_80575C00 = .sbss:0x80575C00; // type:object size:0x8 data:4byte
-lbl_80575C08 = .sbss:0x80575C08; // type:object size:0x8 data:2byte
+Zero__7mAng3_c = .sbss:0x80575C08; // type:object size:0x6 data:2byte
 lbl_80575C10 = .sbss:0x80575C10; // type:object size:0x4 data:4byte
 lbl_80575C14 = .sbss:0x80575C14; // type:object size:0x4 data:4byte
 lbl_80575C18 = .sbss:0x80575C18; // type:object size:0x4 data:4byte
diff --git a/configure.py b/configure.py
index 3123135c..01492c45 100644
--- a/configure.py
+++ b/configure.py
@@ -300,6 +300,7 @@ config.libs = [
             Object(NonMatching, "f/f_base.cpp"),
             Object(Matching, "f/f_list.cpp"),
             Object(Matching, "f/f_manager.cpp"),
+            Object(Matching, "m/m_angle.cpp"),
             Object(Matching, "m/m_heap.cpp"),
             Object(NonMatching, "m/m_mtx.cpp"),
             # framework (f_name)
diff --git a/include/m/m_angle.h b/include/m/m_angle.h
index 29a20d18..37fca394 100644
--- a/include/m/m_angle.h
+++ b/include/m/m_angle.h
@@ -5,18 +5,25 @@
 
 struct mAng {
     mAng() {}
-    mAng(s16 s) : val(s) {}
-    s16 val;
+    mAng(s16 s) : mVal(s) {}
+
+    s32 step(s16 target, s32 steps, s16 max, s16 min);
+
+    s16 mVal;
 };
 
 class mAng3_c {
 public:
     s16 x, y, z;
+    mAng3_c(s16 fx, s16 fy, s16 fz) : x(fx), y(fy), z(fz) {}
+
     void set(s16 fx, s16 fy, s16 fz) {
         x = fx;
         y = fy;
         z = fz;
     }
+
+    static mAng3_c Zero;
 };
 
 #endif
diff --git a/src/m/m_angle.cpp b/src/m/m_angle.cpp
new file mode 100644
index 00000000..a9e9474f
--- /dev/null
+++ b/src/m/m_angle.cpp
@@ -0,0 +1,30 @@
+#include <m/m_angle.h>
+
+/** 80575c08 */
+mAng3_c mAng3_c::Zero = mAng3_c::mAng3_c(0, 0, 0);
+
+/** 802ee5f0 */
+s32 mAng::step(s16 target, s32 steps, s16 max, s16 min) {
+    if (mVal != target) {
+        int stepSize;
+        int diff = target - mVal;
+        stepSize = diff / steps;
+        if (stepSize > min || stepSize < -min) {
+            mVal += stepSize < -max ? -max : stepSize > max ? max : stepSize;
+        } else if (diff >= 0) {
+            if (mVal + min >= target) {
+                mVal = target;
+            } else {
+                mVal += min;
+            }
+        } else {
+            if (mVal - min <= target) {
+                mVal = target;
+            } else {
+                mVal -= min;
+            }
+        }
+    }
+
+    return target - mVal;
+}