void CameraProxy::_update_following(double dt) {
if(following_actor_ && stage->has_actor(following_actor_)) {
float t = (fabs(following_lag_) < kmEpsilon) ? 1.0 : dt * (1.0 / following_lag_);
auto actor = stage->actor(following_actor_);
Vec3 avatar_position = actor->absolute_position();
Quaternion avatar_rotation = actor->absolute_rotation();
Quaternion initial_rotation = absolute_rotation();
Vec3 initial_position = absolute_position();
Vec3 destination_position;
Quaternion destination_rotation;
if(following_mode_ == CAMERA_FOLLOW_MODE_DIRECT) {
destination_position = avatar_position + following_offset_.rotated_by(avatar_rotation);
destination_rotation = calc_look_at_rotation(avatar_position);
} else if(following_mode_ == CAMERA_FOLLOW_MODE_THIRD_PERSON) {
float yaw = kmQuaternionGetYaw(&avatar_rotation);
kmQuaternionRotationPitchYawRoll(&destination_rotation, 0, yaw, 0);
destination_position = following_offset_.rotated_by(destination_rotation) + avatar_position;
} else {
throw std::logic_error("Unknown camera follow mode");
}
set_absolute_position(initial_position.lerp(destination_position, t));
set_absolute_rotation(initial_rotation.slerp(destination_rotation, t));
} else {
//The actor was destroyed, so reset
following_actor_ = ActorID();
}
}
static void _delete_selection(void)
{
int len = strlen(current_song->message);
int eat;
cursor_pos = widgets_message[0].clip_start;
if (cursor_pos > widgets_message[0].clip_end) {
cursor_pos = widgets_message[0].clip_end;
eat = widgets_message[0].clip_start - cursor_pos;
} else {
eat = widgets_message[0].clip_end - cursor_pos;
}
clippy_select(NULL, NULL, 0);
if (cursor_pos == len)
return;
memmove(current_song->message + cursor_pos, current_song->message + cursor_pos + eat + 1,
((len - cursor_pos) - eat)+1);
current_song->message[MAX_MESSAGE] = 0;
set_absolute_position(current_song->message, cursor_pos, &cursor_line, &cursor_char);
message_reposition();
status.flags |= NEED_UPDATE | SONG_NEEDS_SAVE;
}
