Unit 5 Test Review Name: Hour: Date: 1) Describe two ways we have used paint to help us as we studied images in monogame.

Transcription

1 Unit 5 Test Review Name: Hour: Date: Answer the following questions in complete sentences. 1) Describe two ways we have used paint to help us as we studied images in monogame. a) b) 2) Where do you DECLARE the Texture2D object for an image? 3) Where do you DECLARE the Rectangle object for an image? 4) Where do you INITIALIZE a Texture2D Object? 5) Where do you INITIALIZE a Rectangle Object? 6) Where do you place the code that will make the image appear on the screen? 7) What property of each image must be changed BEFORE it will appear in your program. 8) Draw the following rectangle in the space provided. Label all 4 corners with the coordinate point. Rectangle rec = new Rectangle(150, 200, 450, 150); 9) Write the line of code that will correctly construct a Rectangle object inside an object named frogrect. This object should have a width of 450 pixels, height of 200 pixels, and have an upper left hand corner located at the coordinate (150, 200)

2 10) Write the line of code that will correctly construct a Rectangle objects inside an object named center. This object should have a width of 400 pixels, height of 300 pixels, and be located in the CENTER of the Monogame Window. 11) What are the dimensions of the Monogame window in pixels? 12) Complete the code below that will declare and initialize the appropriate objects/rectangles necessary to display two images on the screen with the following properties: a. Student.png : with the dimensions 100x350 pixels with upper left corner at (100, 80) and Color.White background b. Teacher.png : with dimensions 100x400 pixels with upper left corner at (400, 20) and Color.White background public class Game1 : Microsoft.Xna.Framework.Game GraphicsDeviceManager graphics; SpriteBatch spritebatch; protected override void Initialize() base.initialize(); protected override void LoadContent() spritebatch = new SpriteBatch(GraphicsDevice); protected override void Draw(GameTime gametime) GraphicsDevice.Clear(Color.CornflowerBlue); base.draw(gametime);

3 13) You recently created a dog chase game and want to make the dog image you ve brought into your program move around the screen. You have already declared and initialized a Texture2D object named Dog and Rectangle object named DogRect with the appropriate dimensions. In addition, you have already written the necessary code to make the dog image and rectangle appear on the screen. Write the Update method below that will move the Dog around the screen using the Left Thumbstick. protected override void Update(GameTime gametime) base.update(gametime); 14) We want to add a health bar component to our game. What property of what type of object would need to be changed to make it appear as if a health bar is in fact shrinking.

4 15) Write the line of code you would need to detect whether a rectangle object named funnyrect is colliding with another rectangle named sadrect. 16) You want to design a game that will have three different backgrounds consisting of a title screen, a game play screen, and a game over screen. You want your game to switch between these screens when the start button is pressed on the game pad. When you have gone through all three screens, you want your game to automatically end. You may assume the following objects and variables have been declared and initialized earlier in the program. Texture2D Objects: Titlescreen, Gameplay, Gameover Rectangle Objects: TitlescreenRect, GameplayRect, GameoverRect Variables: int screen = 1 Write the code for the update and draw methods below that will make the above instructions happen protected override void Update(GameTime gametime) base.update(gametime); protected override void Draw(GameTime gametime) GraphicsDevice.Clear(Color.CornflowerBlue); base.draw(gametime);

5 17) Use the following code to answer the questions on the following page. public class Game1 : Microsoft.Xna.Framework.Game GraphicsDeviceManager graphics; SpriteBatch spritebatch; Texture2D BoatUp; Texture2D BoatDown; Texture2D BoatRight; Texture2D BoatLeft; Texture2D Boat; Rectangle BoatRect; protected override void Initialize() BoatRect = new Rectangle(100, 100, 100, 100); base.initialize(); protected override void LoadContent() spritebatch = new SpriteBatch(GraphicsDevice); BoatUp = this.content.load<texture2d>( boatup ); BoatDown = this.content.load<texture2d>( boatdown ); BoatRight = this.content.load<texture2d>( boatright ); BoatLeft = this.content.load<texture2d>( boatleft ); Boat = this.content.load,texture2d>( boatright ); protected override void Update(GameTime gametime) KeyboardState keyb = Keyboard.GetState(); if(keyb.iskeydown(keys.right) == true) BoatRect.X++; if(keyb.iskeydown(keys.left) == true) BoatRect.X--; if(keyb.iskeydown(keys.up) == true) BoatRect.Y++; if(keyb.iskeydown(keys.down) == true) BoatRect.Y--; base.update(gametime); protected override void Draw(GameTime gametime) GraphicsDevice.Clear(Color.CornflowerBlue); spritebatch.begin(); spritebatch.draw(boat, BoatRect, Color.White); spritebatch.end(); base.draw(gametime);

6 a) Your friend included the 4 pictures of the boat and the general boat image and wants to know why her program is not changing pictures and the picture of the boat facing to the right is the only picture being displayed. Explain to your friend her error and what she would need to do to fix her error. b) Your friend also notes as she tests her program that her boat, when moving vertically, moves the opposite of what she expects. She tells you that she doesn t know why it isn t working because she used her knowledge of the coordinate plane in math class to change the X and Y coordinate values in her program. Explain to your friend what is happening in her current code and how she would fix it. 18) We have written the code to bring the pictures of the flag and the bird into our program, display them on the screen, move them around, and detect a collision between their two rectangles. Unfortunately, the collision detection is not accurate because of all the whitespace surrounding the flag in the flag image/rectangle. Describe in detail below how we would fix this problem. You may draw directly onto the image to aid your explanation.