/**
* @brief Moves actor.
* @param[in] self Pointer to the event structure that is currently executed
* @param[in] msg The netchannel message
* @sa LET_PathMove
* @note EV_ACTOR_MOVE
*/
void CL_ActorDoMove (const eventRegister_t* self, dbuffer* msg)
{
const int number = NET_ReadShort(msg);
/* get le */
le_t* le = LE_Get(number);
if (!le)
LE_NotFoundError(number);
if (!LE_IsActor(le))
Com_Error(ERR_DROP, "Can't move, LE doesn't exist or is not an actor (entnum: %i, type: %i)\n",
number, le->type);
if (LE_IsDead(le))
Com_Error(ERR_DROP, "Can't move, actor on team %i dead (entnum: %i)", le->team, number);
/* lock this le for other events, the corresponding unlock is in LE_DoEndPathMove() */
LE_Lock(le);
if (le->isMoving()) {
if (le->pathLength == le->pathPos) {
LE_DoEndPathMove(le);
} else {
Com_Error(ERR_DROP, "Actor (entnum: %i) on team %i is still moving (%i steps left). Times: %i, %i, %i",
le->entnum, le->team, le->pathLength - le->pathPos, le->startTime, le->endTime, cl.time);
}
}
int i = 0;
/* the end of this event is marked with a 0 */
while (NET_PeekLong(msg) != 0) {
NET_ReadByte(msg);
le->dvtab[i] = NET_ReadShort(msg); /** Don't adjust dv values here- the whole thing is needed to move the actor! */
le->speed[i] = NET_ReadShort(msg);
le->pathContents[i] = NET_ReadShort(msg);
i++;
}
le->pathLength = i;
if (le->pathLength > MAX_ROUTE)
Com_Error(ERR_DROP, "Overflow in pathLength (entnum: %i)", number);
/* skip the end of move marker */
NET_ReadLong(msg);
/* Also get the final position */
NET_ReadGPos(msg, le->newPos);
if (VectorCompare(le->newPos, le->pos))
Com_Error(ERR_DROP, "start and end pos are the same (entnum: %i)", number);
/* activate PathMove function */
le->resetFloor();
if (LE_IsInvisible(le))
/* Hack: this relies on the visibility events interrupting the EV_ACTOR_MOVE event */
LE_SetThink(le, LET_HiddenMove);
else
LE_SetThink(le, LET_StartPathMove);
le->pathPos = 0;
le->startTime = cl.time;
le->endTime = cl.time;
}
/**
* @brief Move the actor along the path to the given location
* @note Think function
* @sa CL_ActorDoMove
*/
static void LET_PathMove (le_t* le)
{
/* check for start of the next step */
if (cl.time < le->startTime)
return;
/* move ahead */
while (cl.time >= le->endTime) {
/* Ensure that we are displayed where we are supposed to be, in case the last frame came too quickly. */
Grid_PosToVec(cl.mapData->routing, le->fieldSize, le->pos, le->origin);
/* Record the last position of movement calculations. */
VectorCopy(le->pos, le->oldPos);
if (le->pathPos < le->pathLength) {
LE_DoPathMove(le);
} else {
LE_DoEndPathMove(le);
return;
}
}
/* interpolate the position */
vec3_t start, dest, delta;
Grid_PosToVec(cl.mapData->routing, le->fieldSize, le->oldPos, start);
Grid_PosToVec(cl.mapData->routing, le->fieldSize, le->pos, dest);
VectorSubtract(dest, start, delta);
const float frac = (float) (cl.time - le->startTime) / (float) (le->endTime - le->startTime);
/* calculate the new interpolated actor origin in the world */
VectorMA(start, frac, delta, le->origin);
}
