diff --git a/source/enemy/nhcrab.cpp b/source/enemy/nhcrab.cpp
new file mode 100644
index 000000000..5ca4d10f5
--- /dev/null
+++ b/source/enemy/nhcrab.cpp
@@ -0,0 +1,147 @@
+/*=========================================================================
+
+	nhcrab.cpp
+
+	Author:		CRB
+	Created: 
+	Project:	Spongebob
+	Purpose: 
+
+	Copyright (c) 2001 Climax Development Ltd
+
+===========================================================================*/
+
+#ifndef __ENEMY_NPC_H__
+#include "enemy\npc.h"
+#endif
+
+#ifndef __GAME_GAME_H__
+#include "game\game.h"
+#endif
+
+#ifndef	__UTILS_HEADER__
+#include	"utils\utils.h"
+#endif
+
+#ifndef __ANIM_HERMITCRAB_HEADER__
+#include <ACTOR_HERMITCRAB_ANIM.h>
+#endif
+
+void CNpcEnemy::processCloseHermitCrabAttack( int _frames )
+{
+	if ( m_state == HERMIT_CRAB_NO_ATTACK )
+	{
+		m_state = ( getRnd() % 2 ) + 1;
+	}
+
+	switch( m_state )
+	{
+		case HERMIT_CRAB_PUNCH_ATTACK:
+		{
+			if ( m_animNo != ANIM_HERMITCRAB_PUNCH )
+			{
+				m_animPlaying = true;
+				m_animNo = ANIM_HERMITCRAB_PUNCH;
+				m_frame = 0;
+			}
+			else if ( !m_animPlaying )
+			{
+				m_state = HERMIT_CRAB_NO_ATTACK;
+				m_controlFunc = NPC_CONTROL_MOVEMENT;
+				m_timerFunc = NPC_TIMER_ATTACK_DONE;
+				m_timerTimer = GameState::getOneSecondInFrames();
+				m_sensorFunc = NPC_SENSOR_NONE;
+			}
+
+			break;
+		}
+
+		case HERMIT_CRAB_ROLL_ATTACK:
+		{
+			if ( !m_animPlaying )
+			{
+				switch( m_animNo )
+				{
+					case ANIM_HERMITCRAB_ROLLATTACKSTART:
+					{
+						m_animPlaying = true;
+						m_animNo = ANIM_HERMITCRAB_ROLLATTACK;
+						m_frame = 0;
+
+						break;
+					}
+
+					case ANIM_HERMITCRAB_ROLLATTACK:
+					{
+						m_animPlaying = true;
+						m_animNo = ANIM_HERMITCRAB_ROLLATTACKEND;
+						m_frame = 0;
+
+						break;
+					}
+
+					case ANIM_HERMITCRAB_ROLLATTACKEND:
+					{
+						m_state = HERMIT_CRAB_NO_ATTACK;
+						m_controlFunc = NPC_CONTROL_MOVEMENT;
+						m_timerFunc = NPC_TIMER_ATTACK_DONE;
+						m_timerTimer = GameState::getOneSecondInFrames();
+						m_sensorFunc = NPC_SENSOR_NONE;
+
+						break;
+					}
+
+					default:
+					{
+						m_animPlaying = true;
+						m_animNo = ANIM_HERMITCRAB_ROLLATTACKSTART;
+						m_frame = 0;
+
+						if ( playerXDist > 0 )
+						{
+							m_extendDir = EXTEND_RIGHT;
+						}
+						else
+						{
+							m_extendDir = EXTEND_LEFT;
+						}
+
+						break;
+					}
+				}
+			}
+
+			if ( m_animNo == ANIM_HERMITCRAB_ROLLATTACK )
+			{
+				// check for vertical movement
+
+				s32 moveX = 0, moveY = 0;
+				s32 groundHeight;
+				s32 fallSpeed = 2;
+				s8 yMovement = fallSpeed * _frames;
+
+				moveX = 6 * _frames;
+
+				if ( m_extendDir == EXTEND_LEFT )
+				{
+					moveX = -moveX;
+				}
+
+				groundHeight = m_layerCollision->getHeightFromGround( Pos.vx, Pos.vy, yMovement + 16 );
+
+				if ( groundHeight <= yMovement )
+				{
+					// groundHeight <= yMovement indicates either just above ground or on or below ground
+
+					moveY = groundHeight;
+				}
+
+				Pos.vx += moveX;
+				Pos.vy += moveY;
+			}
+		}
+
+		default:
+			break;
+	}
+}
\ No newline at end of file