Method RotateToTarget

PanzerChasm/server/monster.cpp:752–783

}

void Monster::RotateToTarget( float time_delta_s )
{
	if( !target_.have_position )
		return;

	const m_Vec2 vec_to_target= target_.position.xy() - pos_.xy();
	if( vec_to_target.SquareLength() == 0.0f )
		return;

	const float target_angle= NormalizeAngle( std::atan2( vec_to_target.y, vec_to_target.x ) );
	float target_angle_delta= target_angle - angle_;
	if( target_angle_delta > +Constants::pi )
		target_angle_delta-= Constants::two_pi;
	if( target_angle_delta < -Constants::pi )
		target_angle_delta+= Constants::two_pi;

	if( target_angle_delta != 0.0f )
	{
		const GameResources::MonsterDescription& monster_description= game_resources_->monsters_description[ monster_id_ ];

		const float abs_target_angle_delta= std::abs(target_angle_delta);
		const float angle_delta= time_delta_s * float(monster_description.rotation_speed);

		if( angle_delta >= abs_target_angle_delta )
			angle_= target_angle;
		else
		{
			const float turn_direction= target_angle_delta > 0.0f ? 1.0f : -1.0f;
			angle_= NormalizeAngle( angle_ + turn_direction * angle_delta );
		}
	}
}

bool Monster::SelectTarget( const Map& map )
{