Initial import.

1 files changed, 404 insertions, 0 deletions

diff --git a/src/cgame/cg_attachment.c b/src/cgame/cg_attachment.c
new file mode 100644
index 0000000..da094a5
--- /dev/null
+++ b/src/cgame/cg_attachment.c
@@ -0,0 +1,404 @@
+/*
+===========================================================================
+Copyright (C) 2000-2009 Darklegion Development
+
+This file is part of Tremulous.
+
+Tremulous is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Tremulous is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Tremulous; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+// cg_attachment.c -- an abstract attachment system
+
+#include "cg_local.h"
+
+/*
+===============
+CG_AttachmentPoint
+
+Return the attachment point
+===============
+*/
+qboolean CG_AttachmentPoint( attachment_t *a, vec3_t v )
+{
+  centity_t   *cent;
+
+  if( !a )
+    return qfalse;
+
+  // if it all breaks, then use the last point we know was correct
+  VectorCopy( a->lastValidAttachmentPoint, v );
+
+  switch( a->type )
+  {
+    case AT_STATIC:
+      if( !a->staticValid )
+        return qfalse;
+
+      VectorCopy( a->origin, v );
+      break;
+
+    case AT_TAG:
+      if( !a->tagValid )
+        return qfalse;
+
+      AxisCopy( axisDefault, a->re.axis );
+      CG_PositionRotatedEntityOnTag( &a->re, &a->parent,
+                                     a->model, a->tagName );
+      VectorCopy( a->re.origin, v );
+      break;
+
+    case AT_CENT:
+      if( !a->centValid )
+        return qfalse;
+
+      if( a->centNum == cg.predictedPlayerState.clientNum )
+      {
+        // this is smoother if it's the local client
+        VectorCopy( cg.predictedPlayerState.origin, v );
+      }
+      else
+      {
+        cent = &cg_entities[ a->centNum ];
+        VectorCopy( cent->lerpOrigin, v );
+      }
+      break;
+
+    case AT_PARTICLE:
+      if( !a->particleValid )
+        return qfalse;
+
+      if( !a->particle->valid )
+      {
+        a->particleValid = qfalse;
+        return qfalse;
+      }
+      else
+        VectorCopy( a->particle->origin, v );
+      break;
+
+    default:
+      CG_Printf( S_COLOR_RED "ERROR: Invalid attachmentType_t in attachment\n" );
+      break;
+  }
+
+  if( a->hasOffset )
+    VectorAdd( v, a->offset, v );
+
+  VectorCopy( v, a->lastValidAttachmentPoint );
+
+  return qtrue;
+}
+
+/*
+===============
+CG_AttachmentDir
+
+Return the attachment direction
+===============
+*/
+qboolean CG_AttachmentDir( attachment_t *a, vec3_t v )
+{
+  vec3_t      forward;
+  centity_t   *cent;
+
+  if( !a )
+    return qfalse;
+
+  switch( a->type )
+  {
+    case AT_STATIC:
+      return qfalse;
+      break;
+
+    case AT_TAG:
+      if( !a->tagValid )
+        return qfalse;
+
+      VectorCopy( a->re.axis[ 0 ], v );
+      break;
+
+    case AT_CENT:
+      if( !a->centValid )
+        return qfalse;
+
+      cent = &cg_entities[ a->centNum ];
+      AngleVectors( cent->lerpAngles, forward, NULL, NULL );
+      VectorCopy( forward, v );
+      break;
+
+    case AT_PARTICLE:
+      if( !a->particleValid )
+        return qfalse;
+
+      if( !a->particle->valid )
+      {
+        a->particleValid = qfalse;
+        return qfalse;
+      }
+      else
+        VectorCopy( a->particle->velocity, v );
+      break;
+
+    default:
+      CG_Printf( S_COLOR_RED "ERROR: Invalid attachmentType_t in attachment\n" );
+      break;
+  }
+
+  VectorNormalize( v );
+  return qtrue;
+}
+
+/*
+===============
+CG_AttachmentAxis
+
+Return the attachment axis
+===============
+*/
+qboolean CG_AttachmentAxis( attachment_t *a, vec3_t axis[ 3 ] )
+{
+  centity_t   *cent;
+
+  if( !a )
+    return qfalse;
+
+  switch( a->type )
+  {
+    case AT_STATIC:
+      return qfalse;
+      break;
+
+    case AT_TAG:
+      if( !a->tagValid )
+        return qfalse;
+
+      AxisCopy( a->re.axis, axis );
+      break;
+
+    case AT_CENT:
+      if( !a->centValid )
+        return qfalse;
+
+      cent = &cg_entities[ a->centNum ];
+      AnglesToAxis( cent->lerpAngles, axis );
+      break;
+
+    case AT_PARTICLE:
+      return qfalse;
+      break;
+
+    default:
+      CG_Printf( S_COLOR_RED "ERROR: Invalid attachmentType_t in attachment\n" );
+      break;
+  }
+
+  return qtrue;
+}
+
+/*
+===============
+CG_AttachmentVelocity
+
+If the attachment can have velocity, return it
+===============
+*/
+qboolean CG_AttachmentVelocity( attachment_t *a, vec3_t v )
+{
+  if( !a )
+    return qfalse;
+
+  if( a->particleValid && a->particle->valid )
+  {
+    VectorCopy( a->particle->velocity, v );
+    return qtrue;
+  }
+  else if( a->centValid )
+  {
+    centity_t *cent = &cg_entities[ a->centNum ];
+
+    VectorCopy( cent->currentState.pos.trDelta, v );
+    return qtrue;
+  }
+
+  return qfalse;
+}
+
+/*
+===============
+CG_AttachmentCentNum
+
+If the attachment has a centNum, return it
+===============
+*/
+int CG_AttachmentCentNum( attachment_t *a )
+{
+  if( !a || !a->centValid )
+    return -1;
+
+  return a->centNum;
+}
+
+/*
+===============
+CG_Attached
+
+If the attachment is valid, return qtrue
+===============
+*/
+qboolean CG_Attached( attachment_t *a )
+{
+  if( !a )
+    return qfalse;
+
+  return a->attached;
+}
+
+/*
+===============
+CG_AttachToPoint
+
+Attach to a point in space
+===============
+*/
+void CG_AttachToPoint( attachment_t *a )
+{
+  if( !a || !a->staticValid )
+    return;
+
+  a->type = AT_STATIC;
+  a->attached = qtrue;
+}
+
+/*
+===============
+CG_AttachToCent
+
+Attach to a centity_t
+===============
+*/
+void CG_AttachToCent( attachment_t *a )
+{
+  if( !a || !a->centValid )
+    return;
+
+  a->type = AT_CENT;
+  a->attached = qtrue;
+}
+
+/*
+===============
+CG_AttachToTag
+
+Attach to a model tag
+===============
+*/
+void CG_AttachToTag( attachment_t *a )
+{
+  if( !a || !a->tagValid )
+    return;
+
+  a->type = AT_TAG;
+  a->attached = qtrue;
+}
+
+/*
+===============
+CG_AttachToParticle
+
+Attach to a particle
+===============
+*/
+void CG_AttachToParticle( attachment_t *a )
+{
+  if( !a || !a->particleValid )
+    return;
+
+  a->type = AT_PARTICLE;
+  a->attached = qtrue;
+}
+
+/*
+===============
+CG_SetAttachmentPoint
+===============
+*/
+void CG_SetAttachmentPoint( attachment_t *a, vec3_t v )
+{
+  if( !a )
+    return;
+
+  VectorCopy( v, a->origin );
+  a->staticValid = qtrue;
+}
+
+/*
+===============
+CG_SetAttachmentCent
+===============
+*/
+void CG_SetAttachmentCent( attachment_t *a, centity_t *cent )
+{
+  if( !a || !cent )
+    return;
+
+  a->centNum = cent->currentState.number;
+  a->centValid = qtrue;
+}
+
+/*
+===============
+CG_SetAttachmentTag
+===============
+*/
+void CG_SetAttachmentTag( attachment_t *a, refEntity_t parent,
+    qhandle_t model, char *tagName )
+{
+  if( !a )
+    return;
+
+  a->parent = parent;
+  a->model = model;
+  strncpy( a->tagName, tagName, MAX_STRING_CHARS );
+  a->tagValid = qtrue;
+}
+
+/*
+===============
+CG_SetAttachmentParticle
+===============
+*/
+void CG_SetAttachmentParticle( attachment_t *a, particle_t *p )
+{
+  if( !a )
+    return;
+
+  a->particle = p;
+  a->particleValid = qtrue;
+}
+
+/*
+===============
+CG_SetAttachmentOffset
+===============
+*/
+void CG_SetAttachmentOffset( attachment_t *a, vec3_t v )
+{
+  if( !a )
+    return;
+
+  VectorCopy( v, a->offset );
+  a->hasOffset = qtrue;
+}