Mine

void doPredCalc(int player) {
	trajectory_t tr_tmp;
	int delta_time;
        int eFlags = eth.cg_entities[player].currentState->eFlags;
	
//	tr_tmp.trType = history[player][0].trType;
        tr_tmp.trTime = eth.cg_time;          
        VectorCopy(history[player][0].trPos, tr_tmp.trBase); 
        VectorCopy(history[player][0].trDelta, tr_tmp.trDelta);
	VectorNormalize(tr_tmp.trDelta);

	if( VectorLength(history[player][0].trDelta) > 100 )
		tr_tmp.trDelta[0] = tr_tmp.trDelta[0];

	int tmp_dt = history[player][0].t - history[player][1].t;
	if (tmp_dt > 0 && tmp_dt < 600)
	    delta_time = history[player][0].t - history[player][1].t;
	else if(eth.cg_snap->ping > 0)
	    delta_time = eth.cg_snap->ping;
	else 	    
	    delta_time = eth.cg_snap->serverTime - eth.cg_time;


	//delta_time *= 0.5;
	tr_tmp.trTime = eth.cg_snap->serverTime;
	tr_tmp.trDuration = delta_time;	
// check for bird
	
	if(history[player][0].air_state == ENTITYNUM_NONE ) {
		tr_tmp.trType = TR_GRAVITY;
		eth_BG_EvaluateTrajectoryDelta(&tr_tmp,eth.cg_time + (int)(delta_time * seth.value[VAR_PRED_C]),tr_tmp.trDelta,qfalse,-1);
	} else  {
		tr_tmp.trType = TR_GRAVITY_FLOAT;
		eth_BG_EvaluateTrajectoryDelta(&tr_tmp,eth.cg_time + (int)(delta_time * seth.value[VAR_PRED_C]),tr_tmp.trDelta,qfalse,-1);
	}

// and for crouchersopr0nners
	if( (eFlags & EF_PRONE) || (eFlags & EF_PRONE_MOVING) || (eFlags & EF_CROUCHING)) {
	    tr_tmp.trType = TR_LINEAR;
		eth_BG_EvaluateTrajectoryDelta(&tr_tmp,eth.cg_time + (int)(delta_time * seth.value[VAR_PRED_C]),tr_tmp.trDelta,qfalse,-1);
// acceleration 
	} else if(history[player][0].t > 0 && history[player][1].t > 0 && history[player][2].t > 0) {
		if((VectorDistance(history[player][2].trPos,history[player][1].trPos)/(history[player][1].t-history[player][2].t)) < (VectorDistance(history[player][1].trPos,history[player][0].trPos)/(history[player][0].t-history[player][1].t))) {
		    tr_tmp.trType = TR_ACCELERATE;
			eth_BG_EvaluateTrajectoryDelta(&tr_tmp,eth.cg_time + (int)(delta_time * seth.value[VAR_PRED_C]),tr_tmp.trDelta,qfalse,-1);
		} else {
		    tr_tmp.trType = TR_DECCELERATE;
			eth_BG_EvaluateTrajectoryDelta(&tr_tmp,eth.cg_time + (int)(delta_time * seth.value[VAR_PRED_C]),tr_tmp.trDelta,qfalse,-1);
		}
		
	} 

	VectorCopy(history[player][0].prPos,tr_tmp.trDelta);
	
		
	tr_tmp.trType = TR_SINE;
	 
	eth.BG_EvaluateTrajectory(&tr_tmp,eth.cg_time + (int)(delta_time * seth.value[VAR_PRED_C]),history[player][0].prPos,qfalse,-1);

	if(VectorDistance(history[player][0].prPos,history[player][0].trPos) < 100)
	    VectorSubtract(history[player][0].trPos,history[player][0].prPos,history[player][0].prPos);
	else 
	    VectorCopy(history[player][0].trDelta,history[player][0].prPos);
	    
	vec3_t distance;
	VectorAdd(history[player][1].trPos,history[player][1].prPos,distance);
	
	eth.predMissed = VectorDistance(distance,history[player][0].trPos);	
}