Abstracted the buildable renderer a bit and added preliminary animation routines

1 files changed, 355 insertions, 0 deletions

diff --git a/src/cgame/cg_buildable.c b/src/cgame/cg_buildable.c
new file mode 100644
index 00000000..ec7d2858
--- /dev/null
+++ b/src/cgame/cg_buildable.c
@@ -0,0 +1,355 @@
+/*
+ *  Portions Copyright (C) 2000-2001 Tim Angus
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU Lesser General Public License as published by
+ *  the Free Software Foundation; either version 2.1, or (at your option)
+ *  any later version.
+ *
+ *  This program 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 Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+/*  To assertain which portions are licensed under the LGPL and which are
+ *  licensed by Id Software, Inc. please run a diff between the equivalent
+ *  versions of the "Tremulous" modification and the unmodified "Quake3"
+ *  game source code.
+ */
+
+#include "cg_local.h"
+
+//if it ends up this is needed outwith this file i'll make it a bit more tidy
+animation_t buildAnimations[ BA_NUM_BUILDABLES ][ MAX_BUILDABLE_ANIMATIONS ];
+
+/*
+======================
+CG_ParseBuildableAnimationFile
+
+Read a configuration file containing animation coutns and rates
+models/players/visor/animation.cfg, etc
+======================
+*/
+static qboolean CG_ParseBuildableAnimationFile( const char *filename, buildable_t buildable )
+{
+  char    *text_p, *prev;
+  int     len;
+  int     i;
+  char    *token;
+  float   fps;
+  int     skip;
+  char    text[20000];
+  fileHandle_t  f;
+  animation_t *animations;
+
+  animations = buildAnimations[ buildable ];
+
+  // load the file
+  len = trap_FS_FOpenFile( filename, &f, FS_READ );
+  if ( len <= 0 )
+    return qfalse;
+    
+  if ( len >= sizeof( text ) - 1 )
+  {
+    CG_Printf( "File %s too long\n", filename );
+    return qfalse;
+  }
+  
+  trap_FS_Read( text, len, f );
+  text[len] = 0;
+  trap_FS_FCloseFile( f );
+
+  // parse the text
+  text_p = text;
+  skip = 0; // quite the compiler warning
+
+  // read information for each frame
+  for ( i = 0; i < MAX_BUILDABLE_ANIMATIONS; i++ )
+  {
+
+    token = COM_Parse( &text_p );
+    if ( !*token )
+      break;
+      
+    animations[ i ].firstFrame = atoi( token );
+
+    token = COM_Parse( &text_p );
+    if ( !*token )
+      break;
+      
+    animations[ i ].numFrames = atoi( token );
+    animations[ i ].reversed = qfalse;
+    animations[ i ].flipflop = qfalse;
+    
+    // if numFrames is negative the animation is reversed
+    if ( animations[ i ].numFrames < 0 )
+    {
+      animations[ i ].numFrames = -animations[ i ].numFrames;
+      animations[ i ].reversed = qtrue;
+    }
+
+    token = COM_Parse( &text_p );
+    if ( !*token )
+      break;
+      
+    animations[i].loopFrames = atoi( token );
+
+    token = COM_Parse( &text_p );
+    if ( !*token )
+      break;
+      
+    fps = atof( token );
+    if ( fps == 0 )
+      fps = 1;
+    
+    animations[ i ].frameLerp = 1000 / fps;
+    animations[ i ].initialLerp = 1000 / fps;
+  }
+
+/*  if ( i != MAX_BUILDABLE_ANIMATIONS ) {
+    CG_Printf( "Error parsing animation file: %s", filename );
+    return qfalse;
+  }*/
+  
+  return qtrue;
+}
+
+/*
+===============
+CG_InitBuildables
+
+Initialises the animation db
+===============
+*/
+void CG_InitBuildables( )
+{
+  char  filename[MAX_QPATH];
+  char  *buildableName;
+  int   i;
+
+  for( i = BA_NONE + 1; i < BA_NUM_BUILDABLES; i++ )
+  {
+    buildableName = BG_FindNameForBuildable( i );
+    
+    Com_sprintf( filename, sizeof( filename ), "models/buildables/%s/animation.cfg", buildableName );
+    if ( !CG_ParseBuildableAnimationFile( filename, i ) )
+      Com_Printf( "Failed to load animation file %s\n", filename );
+  }
+}
+
+/*
+===============
+CG_SetBuildableLerpFrameAnimation
+
+may include ANIM_TOGGLEBIT
+===============
+*/
+static void CG_SetBuildableLerpFrameAnimation( buildable_t buildable, lerpFrame_t *lf, int newAnimation ) {
+  animation_t *anim;
+
+  lf->animationNumber = newAnimation;
+  newAnimation &= ~ANIM_TOGGLEBIT;
+
+  if ( newAnimation < 0 || newAnimation >= MAX_BUILDABLE_ANIMATIONS ) {
+    CG_Error( "Bad animation number: %i", newAnimation );
+  }
+
+  anim = buildAnimations[ buildable ];
+
+  lf->animation = anim;
+  lf->animationTime = lf->frameTime + anim->initialLerp;
+
+  if ( cg_debugAnim.integer ) {
+    CG_Printf( "Anim: %i\n", newAnimation );
+  }
+}
+
+/*
+===============
+CG_RunBuildableLerpFrame
+
+Sets cg.snap, cg.oldFrame, and cg.backlerp
+cg.time should be between oldFrameTime and frameTime after exit
+===============
+*/
+static void CG_RunBuildableLerpFrame( buildable_t buildable, lerpFrame_t *lf, int newAnimation ) {
+  int     f, numFrames;
+  animation_t *anim;
+
+  // debugging tool to get no animations
+  if ( cg_animSpeed.integer == 0 ) {
+    lf->oldFrame = lf->frame = lf->backlerp = 0;
+    return;
+  }
+
+  // see if the animation sequence is switching
+  if ( newAnimation != lf->animationNumber || !lf->animation ) {
+    CG_SetLerpFrameAnimation( buildable, lf, newAnimation );
+  }
+
+  // if we have passed the current frame, move it to
+  // oldFrame and calculate a new frame
+  if ( cg.time >= lf->frameTime ) {
+    lf->oldFrame = lf->frame;
+    lf->oldFrameTime = lf->frameTime;
+
+    // get the next frame based on the animation
+    anim = lf->animation;
+    if ( !anim->frameLerp ) {
+      return;   // shouldn't happen
+    }
+    if ( cg.time < lf->animationTime ) {
+      lf->frameTime = lf->animationTime;    // initial lerp
+    } else {
+      lf->frameTime = lf->oldFrameTime + anim->frameLerp;
+    }
+    f = ( lf->frameTime - lf->animationTime ) / anim->frameLerp;
+    numFrames = anim->numFrames;
+    if (anim->flipflop) {
+      numFrames *= 2;
+    }
+    if ( f >= numFrames ) {
+      f -= numFrames;
+      if ( anim->loopFrames ) {
+        f %= anim->loopFrames;
+        f += anim->numFrames - anim->loopFrames;
+      } else {
+        f = numFrames - 1;
+        // the animation is stuck at the end, so it
+        // can immediately transition to another sequence
+        lf->frameTime = cg.time;
+      }
+    }
+    if ( anim->reversed ) {
+      lf->frame = anim->firstFrame + anim->numFrames - 1 - f;
+    }
+    else if (anim->flipflop && f>=anim->numFrames) {
+      lf->frame = anim->firstFrame + anim->numFrames - 1 - (f%anim->numFrames);
+    }
+    else {
+      lf->frame = anim->firstFrame + f;
+    }
+    if ( cg.time > lf->frameTime ) {
+      lf->frameTime = cg.time;
+      if ( cg_debugAnim.integer ) {
+        CG_Printf( "Clamp lf->frameTime\n");
+      }
+    }
+  }
+
+  if ( lf->frameTime > cg.time + 200 ) {
+    lf->frameTime = cg.time;
+  }
+
+  if ( lf->oldFrameTime > cg.time ) {
+    lf->oldFrameTime = cg.time;
+  }
+  // calculate current lerp value
+  if ( lf->frameTime == lf->oldFrameTime ) {
+    lf->backlerp = 0;
+  } else {
+    lf->backlerp = 1.0 - (float)( cg.time - lf->oldFrameTime ) / ( lf->frameTime - lf->oldFrameTime );
+  }
+}
+
+
+/*
+===============
+CG_BuildableAnimation
+===============
+*/
+static void CG_BuildableAnimation( centity_t *cent, int *old, int *now, float *backLerp ) {
+
+  CG_RunBuildableLerpFrame( cent->currentState.clientNum,
+                            &cent->lerpFrame, cent->currentState.torsoAnim );
+
+  *old      = cent->lerpFrame.oldFrame;
+  *now      = cent->lerpFrame.frame;
+  *backLerp = cent->lerpFrame.backlerp;
+}
+
+
+/*
+==================
+CG_Buildable
+==================
+*/
+void CG_Buildable( centity_t *cent ) {
+  refEntity_t     ent;
+  refEntity_t     ent2;
+  entityState_t   *es;
+  gitem_t       *item;
+  int         msec;
+  float       frac;
+  float       scale;
+
+  es = &cent->currentState;
+  if ( es->modelindex >= bg_numItems ) {
+    CG_Error( "Bad item index %i on entity", es->modelindex );
+  }
+  
+  //add creep
+  if( es->modelindex2 == BIT_DROIDS )
+    CG_Creep( cent );  
+
+  // if set to invisible, skip
+  if ( !es->modelindex || ( es->eFlags & EF_NODRAW ) ) {
+    return;
+  }
+
+  item = &bg_itemlist[ es->modelindex ];
+
+  memset (&ent, 0, sizeof(ent));
+
+  VectorCopy( es->angles, cent->lerpAngles );
+  AnglesToAxis( cent->lerpAngles, ent.axis );
+
+  ent.hModel = cg_items[es->modelindex].models[0];
+
+  VectorCopy( cent->lerpOrigin, ent.origin);
+  VectorCopy( cent->lerpOrigin, ent.oldorigin);
+
+  ent.nonNormalizedAxes = qfalse;
+
+  // if just respawned, slowly scale up
+  msec = cg.time - cent->miscTime;
+  if ( msec >= 0 && msec < ITEM_SCALEUP_TIME ) {
+    frac = (float)msec / ITEM_SCALEUP_TIME;
+    VectorScale( ent.axis[0], frac, ent.axis[0] );
+    VectorScale( ent.axis[1], frac, ent.axis[1] );
+    VectorScale( ent.axis[2], frac, ent.axis[2] );
+    ent.nonNormalizedAxes = qtrue;
+  } else {
+    frac = 1.0;
+  }
+
+  //turret barrel bit
+  if( cg_items[ es->modelindex ].models[ 1 ] != 0 )
+  {
+    vec3_t turretOrigin;
+    
+    memset( &ent2, 0, sizeof( ent2 ) );
+
+    AnglesToAxis( es->angles2, ent2.axis );
+
+    ent2.hModel = cg_items[ es->modelindex ].models[ 1 ];
+
+    VectorCopy( cent->lerpOrigin, turretOrigin );
+    turretOrigin[ 2 ] += 5;
+    
+    VectorCopy( turretOrigin, ent2.origin );
+    VectorCopy( turretOrigin, ent2.oldorigin );
+
+    ent2.nonNormalizedAxes = qfalse;
+
+    trap_R_AddRefEntityToScene( &ent2 );
+  }
+
+  // add to refresh list
+  trap_R_AddRefEntityToScene(&ent);
+}