diff --git a/engine/common/common.c b/engine/common/common.c
index 4bec0405c..e251b2b58 100644
--- a/engine/common/common.c
+++ b/engine/common/common.c
@@ -759,25 +759,6 @@ void GAME_EXPORT COM_FreeFile( void *buffer )
 	free( buffer );
 }
 
-/*
-=============
-COM_NormalizeAngles
-
-=============
-*/
-void COM_NormalizeAngles( vec3_t angles )
-{
-	int i;
-
-	for( i = 0; i < 3; i++ )
-	{
-		if( angles[i] > 180.0f )
-			angles[i] -= 360.0f;
-		else if( angles[i] < -180.0f )
-			angles[i] += 360.0f;
-	}
-}
-
 /*
 =============
 pfnGetModelType
diff --git a/engine/common/common.h b/engine/common/common.h
index 82ca6dd13..393631954 100644
--- a/engine/common/common.h
+++ b/engine/common/common.h
@@ -769,13 +769,25 @@ void UI_ShowConnectionWarning( void );
 void Cmd_Null_f( void );
 void Rcon_Print( host_redirect_t *rd, const char *pMsg );
 qboolean COM_ParseVector( char **pfile, float *v, size_t size );
-void COM_NormalizeAngles( vec3_t angles );
 int COM_FileSize( const char *filename );
 void COM_FreeFile( void *buffer );
 int COM_CompareFileTime( const char *filename1, const char *filename2, int *iCompare );
 char *va( const char *format, ... ) _format( 1 );
 qboolean CRC32_MapFile( dword *crcvalue, const char *filename, qboolean multiplayer );
 
+static inline void COM_NormalizeAngles( vec3_t angles )
+{
+	int i;
+
+	for( i = 0; i < 3; i++ )
+	{
+		if( angles[i] > 180.0f )
+			angles[i] -= 360.0f;
+		else if( angles[i] < -180.0f )
+			angles[i] += 360.0f;
+	}
+}
+
 #if !XASH_DEDICATED
 connprotocol_t CL_Protocol( void );
 #else
diff --git a/engine/common/pm_local.h b/engine/common/pm_local.h
index 440614c25..a079c3104 100644
--- a/engine/common/pm_local.h
+++ b/engine/common/pm_local.h
@@ -24,7 +24,6 @@ typedef int (*pfnIgnore)( physent_t *pe );	// custom trace filter
 // pm_trace.c
 //
 void Pmove_Init( void );
-void PM_ClearPhysEnts( playermove_t *pmove );
 void PM_InitBoxHull( void );
 hull_t *PM_HullForBsp( physent_t *pe, playermove_t *pmove, float *offset );
 qboolean PM_RecursiveHullCheck( hull_t *hull, int num, float p1f, float p2f, vec3_t p1, vec3_t p2, pmtrace_t *trace );
@@ -40,7 +39,29 @@ struct msurface_s *PM_TraceSurfacePmove( playermove_t *pmove, int ground, float
 const char *PM_TraceTexture( playermove_t *pmove, int ground, float *vstart, float *vend );
 int PM_PointContentsPmove( playermove_t *pmove, const float *p, int *truecontents );
 void PM_StuckTouch( playermove_t *pmove, int hitent, pmtrace_t *tr );
-void PM_ConvertTrace( trace_t *out, pmtrace_t *in, edict_t *ent );
+
+static inline void PM_ConvertTrace( trace_t *out, pmtrace_t *in, edict_t *ent )
+{
+	out->allsolid = in->allsolid;
+	out->startsolid = in->startsolid;
+	out->inopen = in->inopen;
+	out->inwater = in->inwater;
+	out->fraction = in->fraction;
+	out->plane.dist = in->plane.dist;
+	out->hitgroup = in->hitgroup;
+	out->ent = ent;
+
+	VectorCopy( in->endpos, out->endpos );
+	VectorCopy( in->plane.normal, out->plane.normal );
+}
+
+static inline void PM_ClearPhysEnts( playermove_t *pmove )
+{
+	pmove->nummoveent = 0;
+	pmove->numphysent = 0;
+	pmove->numvisent = 0;
+	pmove->numtouch = 0;
+}
 
 static inline void PM_InitTrace( trace_t *trace, const vec3_t end )
 {
diff --git a/engine/common/pm_trace.c b/engine/common/pm_trace.c
index 7b8653eef..fe4b6d20d 100644
--- a/engine/common/pm_trace.c
+++ b/engine/common/pm_trace.c
@@ -55,14 +55,6 @@ void Pmove_Init( void )
 	memcpy( host.player_maxs, pm_hullmaxs, sizeof( pm_hullmaxs ));
 }
 
-void PM_ClearPhysEnts( playermove_t *pmove )
-{
-	pmove->nummoveent = 0;
-	pmove->numphysent = 0;
-	pmove->numvisent = 0;
-	pmove->numtouch = 0;
-}
-
 /*
 ===================
 PM_InitBoxHull
@@ -117,21 +109,6 @@ static hull_t *PM_HullForBox( const vec3_t mins, const vec3_t maxs )
 	return &pm_boxhull;
 }
 
-void PM_ConvertTrace( trace_t *out, pmtrace_t *in, edict_t *ent )
-{
-	out->allsolid = in->allsolid;
-	out->startsolid = in->startsolid;
-	out->inopen = in->inopen;
-	out->inwater = in->inwater;
-	out->fraction = in->fraction;
-	out->plane.dist = in->plane.dist;
-	out->hitgroup = in->hitgroup;
-	out->ent = ent;
-
-	VectorCopy( in->endpos, out->endpos );
-	VectorCopy( in->plane.normal, out->plane.normal );
-}
-
 /*
 ==================
 PM_HullPointContents
diff --git a/engine/common/world.c b/engine/common/world.c
index 37c0f533c..06275cb44 100644
--- a/engine/common/world.c
+++ b/engine/common/world.c
@@ -20,47 +20,6 @@ GNU General Public License for more details.
 #include "xash3d_mathlib.h"
 #include "studio.h"
 
-/*
-==================
-World_MoveBounds
-==================
-*/
-void World_MoveBounds( const vec3_t start, vec3_t mins, vec3_t maxs, const vec3_t end, vec3_t boxmins, vec3_t boxmaxs )
-{
-	int	i;
-
-	for( i = 0; i < 3; i++ )
-	{
-		if( end[i] > start[i] )
-		{
-			boxmins[i] = start[i] + mins[i] - 1.0f;
-			boxmaxs[i] = end[i] + maxs[i] + 1.0f;
-		}
-		else
-		{
-			boxmins[i] = end[i] + mins[i] - 1.0f;
-			boxmaxs[i] = start[i] + maxs[i] + 1.0f;
-		}
-	}
-}
-
-trace_t World_CombineTraces( trace_t *cliptrace, trace_t *trace, edict_t *touch )
-{
-	if( trace->allsolid || trace->startsolid || trace->fraction < cliptrace->fraction )
-	{
-		trace->ent = touch;
-
-		if( cliptrace->startsolid )
-		{
-			*cliptrace = *trace;
-			cliptrace->startsolid = true;
-		}
-		else *cliptrace = *trace;
-	}
-
-	return *cliptrace;
-}
-
 /*
 ==================
 World_TransformAABB
@@ -107,31 +66,3 @@ void World_TransformAABB( matrix4x4 transform, const vec3_t mins, const vec3_t m
 		}
 	}
 }
-
-/*
-==================
-RankForContents
-
-Used for determine contents priority
-==================
-*/
-int RankForContents( int contents )
-{
-	switch( contents )
-	{
-	case CONTENTS_EMPTY:	return 0;
-	case CONTENTS_WATER:	return 1;
-	case CONTENTS_TRANSLUCENT:	return 2;
-	case CONTENTS_CURRENT_0:	return 3;
-	case CONTENTS_CURRENT_90:	return 4;
-	case CONTENTS_CURRENT_180:	return 5;
-	case CONTENTS_CURRENT_270:	return 6;
-	case CONTENTS_CURRENT_UP:	return 7;
-	case CONTENTS_CURRENT_DOWN:	return 8;
-	case CONTENTS_SLIME:	return 9;
-	case CONTENTS_LAVA:		return 10;
-	case CONTENTS_SKY:		return 11;
-	case CONTENTS_SOLID:	return 12;
-	default:			return 13; // any user contents has more priority than default
-	}
-}
diff --git a/engine/common/world.h b/engine/common/world.h
index 199ae9f3f..30b30bcf2 100644
--- a/engine/common/world.h
+++ b/engine/common/world.h
@@ -36,10 +36,71 @@ ENTITY AREA CHECKING
 #include "lightstyle.h"
 
 // trace common
-void World_MoveBounds( const vec3_t start, vec3_t mins, vec3_t maxs, const vec3_t end, vec3_t boxmins, vec3_t boxmaxs );
+static inline void World_MoveBounds( const vec3_t start, vec3_t mins, vec3_t maxs, const vec3_t end, vec3_t boxmins, vec3_t boxmaxs )
+{
+	int	i;
+
+	for( i = 0; i < 3; i++ )
+	{
+		if( end[i] > start[i] )
+		{
+			boxmins[i] = start[i] + mins[i] - 1.0f;
+			boxmaxs[i] = end[i] + maxs[i] + 1.0f;
+		}
+		else
+		{
+			boxmins[i] = end[i] + mins[i] - 1.0f;
+			boxmaxs[i] = start[i] + maxs[i] + 1.0f;
+		}
+	}
+}
+
+static inline trace_t World_CombineTraces( trace_t *cliptrace, trace_t *trace, edict_t *touch )
+{
+	if( trace->allsolid || trace->startsolid || trace->fraction < cliptrace->fraction )
+	{
+		trace->ent = touch;
+
+		if( cliptrace->startsolid )
+		{
+			*cliptrace = *trace;
+			cliptrace->startsolid = true;
+		}
+		else *cliptrace = *trace;
+	}
+
+	return *cliptrace;
+}
+
+/*
+==================
+RankForContents
+
+Used for determine contents priority
+==================
+*/
+static inline int RankForContents( int contents )
+{
+	switch( contents )
+	{
+	case CONTENTS_EMPTY:	return 0;
+	case CONTENTS_WATER:	return 1;
+	case CONTENTS_TRANSLUCENT:	return 2;
+	case CONTENTS_CURRENT_0:	return 3;
+	case CONTENTS_CURRENT_90:	return 4;
+	case CONTENTS_CURRENT_180:	return 5;
+	case CONTENTS_CURRENT_270:	return 6;
+	case CONTENTS_CURRENT_UP:	return 7;
+	case CONTENTS_CURRENT_DOWN:	return 8;
+	case CONTENTS_SLIME:	return 9;
+	case CONTENTS_LAVA:		return 10;
+	case CONTENTS_SKY:		return 11;
+	case CONTENTS_SOLID:	return 12;
+	default:			return 13; // any user contents has more priority than default
+	}
+}
+
 void World_TransformAABB( matrix4x4 transform, const vec3_t mins, const vec3_t maxs, vec3_t outmins, vec3_t outmaxs );
-trace_t World_CombineTraces( trace_t *cliptrace, trace_t *trace, edict_t *touch );
-int RankForContents( int contents );
 
 #define check_angles( x )	( (int)x == 90 || (int)x == 180 || (int)x == 270 || (int)x == -90 || (int)x == -180 || (int)x == -270 )