Need to write down something

面对多个工作机会,作者综合考虑了薪资、工作地点、公司行业地位及职业发展前景等因素,难以抉择。最终接受了Realtek公司的职位,该公司主要产品包括计算机和终端的网络接口卡。

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I have been finding a  job for around one month, with several offers in hand. It is really hard to decide which job I should take. I have to take a lot of elements to account, like salary, working place, position of the company in the IT area, and career prospect. Moreover, suggestions from my family also need to be  regarded.


Last night, I chatted with one of my best friends in college and asked him for some advice. He got a position in CISCO, a great company. We had participated in the Electronic Design Contest together during undergraduate study. After graduation, we entered different universities for further education. However, we still can't get the final decision after a long discussion. Last, we agreed to deal with it by flipping a coin. Anyway, I really appreciated his help and our friendship.


Now I accept the occupation offered by Realtek Corp. One of main products of this company is NIC for computers and terminals.




Now, we have a way to perceive that the user is pressing a key. We know when we want to move up, down, left, and right. We know at each iteration of the main loop exactly, what the user wants; we just have to update the circle with a new position depending on this input. This method gives us a great advantage. So finally we can write something in our update() function, namely, the movement of our player. We check which of the four Boolean member variables is true, and determine the movement accordingly. By using += (instead of =) and if (instead of else if), we implicitly handle the case where two opposite keys, such as right and left are pressed at the same time—the movement stays zero. The update() function is shown in the following code snippet: void Game::update() { sf::Vector2f movement(0.f, 0.f); if (mIsMovingUp) movement.y -= 1.f; if (mIsMovingDown) movement.y += 1.f; if (mIsMovingLeft) movement.x -= 1.f; if (mIsMovingRight) movement.x += 1.f; mPlayer.move(movement); } We introduce two new things here: a vector and the move() function on the circle shape. The move() function does what its name says, it moves the shape by the amount we provide it. Vector algebra Vectors are an important part of algebraic mathematics. They imply lots of rules and definitions, which go beyond the scope of our book. However, SFML's sf::Vector2 class template is way more practical, both in concept and functionality. To be as simple as we could possibly be, we know that a coordinate in a two-dimensional Cartesian system would need two components: x and y. Because in graphics all coordinates are expressed with the decimal float data type, sf::Vector2 is instantiated as sf::Vector2<float>, which conveniently has a typedef named sf::Vector2f. Such an object is made to contain two member variables, x and y. This makes our life simpler, because now we don't need to pass two variables to functions, as we can fit both in a single sf::Vector2f object. sf::Vector2f also defines common vector operations, such as additions and subtractions with other vectors, or multiplications and divisions with scalars (single values), effectively shortening our code.翻译,要求每行中英文对照
03-08
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