Pygame draw rect23.10.2020
Python is the most popular programming language or nothing wrong to say that it is the next-generation programming language. In every emerging field in computer science, Python makes its presence actively. In this tutorial, we are going to learn about game development using the Pygame Python library. Before installing Pygame, Python should be installed in the system, and it is good to have 3.
There are mainly two ways to install Pygame, which are given below:. Installing through pip: The good way to install Pygame is with the pip tool which is what python uses to install packages. The command is the following:. Installation of pygame in the pycharm is straightforward. We can install it by running the above command in the terminal or use the following steps:. To check whether the pygame is properly installed or not, in the IDLE interpreter, type the following command and press Enter:.
If the command runs successfully without throwing any errors, it means we have successfully installed Pygame and found the correct version of IDLE to use for pygame programming.
The return value is a Surface object which is the object where we will perform graphical operations. If we do not call this, the window messages will start to pile up and, the game will become unresponsive in the opinion of the operating system. QUIT - This is used to terminate the event when we click on the close button at the corner of the window.
It is essential to call this function in order to make any updates that you make on the game screen to make visible. The pygame Surface is used to display any image. The Surface has a pre-defined resolution and pixel format. The Surface color is by default black. Its size is defined by passing the size argument. Surfaces can have the number of extra attributes like alpha planes, color keys, source rectangle clipping, etc.
The blit routines will attempt to use hardware acceleration when possible; otherwise, they will use highly enhanced software blitting methods. Pygame clock is used to track the time. The time is essential to create motion, play a sound, or, react to any event.
In general, we don't count time in seconds. We count it in milliseconds. The clock also provides various functions to help in controlling the game's frame rate. The few functions are the following:. This method should be called once per frame. It will calculate how many milliseconds have passed since the previous call. The framerate argument is optional to pass in the function, and if it is passed as an argument then the function will delay to keep the game running slower than the given ticks per second.
By calling the Clock.On this PyGame tutorial blog, let us learn in detail about PyGame and see how we can proceed building simple games with this. For making a game of your choice there are 3 main questions that need answering.How to draw a rectangle in pygame window
They are as follows:. Most of the time you can answer each of these questions and find a perfect framework that fits your requirements. Other times, it might not be possible. Installing PyGame is pretty straightforward and easy. But the first prerequisite is to install Python 2. Installing Python on both Windows and Linux is very easy and simple.
Next up would be download the official PyGame installer and run the corresponding files and follow the on-screen instructions. Installation is simple.
Just follow through and the defaults are considered fine. I personally use PyCharm and install all of these addons there and work using that for my Python requirements.
Just use whichever IDE you are comfortable with and start along with that. The following is a very simple app that is built using PyGame pipeline. Check it out:. Here is where you can make more sense out of the syntax:.
The return value is a Surface object which is the object you will perform graphical operations on. If you do not call this, the windows messages will start to pile up and your game will become unresponsive in the opinion of the operating system. All you need to know is that this call is required in order for any updates that you make to the game screen to become visible.
So what is the output like, when we execute the above code? It looks something like this:. Looks rather plain, right? Let us start adding some content to our screen. We can begin by drawing a rectangle. It is simple and we use pygame. As you can imagine, this will draw a rectangle.
So what is it that we can see after adding that tiny piece of code? Seems to be nothing fancy just yet. But we can always start somewhere, right? So next up on this PyGame Tutorial blog, let us look at how we can make the game more interactive.Draw circles, rectangles, ellipses, polygons, lines, sequence of lines and arcs. Anti-aliased lines, Detect collision between two rectangles.
We can draw a circle using the pygame. By default, the value of width is 0. This method returns a Rect object that represents the rectangle that occupies the circle. We can draw a rectangle using the pygame. This method returns a Rect object that represents the rectangle that occupies the rectangle. We can draw an ellipse using the pygame. We can draw a polygon using the pygame. This method returns a Rect object that represents the rectangle that occupies the polygon. We can draw a line using the pygame.
By default, the value of width is 1.
This method returns a Rect object that represents the rectangle that occupies the line. We can draw a sequence of lines using the pygame. If closed is Truethe start and end points of the sequence of lines will be joined with an additional line.
This method returns a Rect object that represents the rectangle that occupies the sequence of lines. We can draw an anti-aliased line using the pygame. If blend is Truethe line will be anti-aliased. By default, the value of blend is 1. This method returns a Rect object that represents the rectangle that occupies the anti-aliased line.
We can draw a sequence of anti-aliased lines using the pygame. If closed is Truethe start and end points of the sequence of anti-aliased lines will be joined with an additional line. If blend is Truethe sequence of lines will be anti-aliased. This method returns a Rect object that represents the rectangle that occupies the sequence of anti-aliased lines. We can draw an arc using the pygame. This method returns a Rect object that represents the rectangle that occupies the arc. We can detect the collision between 2 rectangles using the rect.
This method returns True if the two rectangles collide. Move the mouse and press its left button to drag the blue rectangle. Press the updownleft and right keys to move the blue rectangle one pixel.
Toggle navigation. Shapes Draw circles, rectangles, ellipses, polygons, lines, sequence of lines and arcs. Was this section useful? Yes No. I would like to learn about Draw a sequence of lines. Draw an anti-aliased line.In this module, we are going to learn how to draw various shapes like polygon, rectangle, circle, ellipse, etc. First, let us implement the most basic shape that helps build different games the syntax is as follows.
Here, tuple includes the position of the rectangle for the first two values and width, height for the next two values. The following code describes drawing a rectangle.
PyGame Drawing Basics
We get a rectangle of red in color of width, height as 52,42 and it is placed at position 32, The tuple consists of two value tuples which indicates drawing of the line at given tuple. For the pentagon, we take 5 tuples and for hexagon, we take 6 tuples. The following code implements a polygon called a pentagon. We get output as a pentagon blue in color tuple values indicate the position of lines drawn to form a polygon. The following code describes the drawing of a circle.
We get output as a circle at center i. Here, tuple indicates 4 integer tuple which is called the bounding rectangle in which the ellipse will be placed. Your email address will not be published.
To use the module you first need to import and initialize pygame correctly and set a mode for the display. It's convenient to define color constants in advance, making your code more readable and more beautiful.
The code below will showcase all the different functions, how they are used and how they look. We'll initialize pygame and define some constants before the examples.
The black color is the Surface default color and represents the part of the Surface that hasn't been drawn onto. The parameters of each function is explained down below at Parameters.
To try it out for yourself: copy one of the code snippets above and the code below in an empty file, change the name image to the name of the Surface you want to blit and experiment. Download pygame PDF pygame Getting started with pygame Adding background music and sound effects Creating a pygame window Creating a simple pygame window Creating a window in pygame - pygame.
Example Pygame has a module, pygame. Function Description pygame. Example The code below will showcase all the different functions, how they are used and how they look. Color0, 0 The black color is the Surface default color and represents the part of the Surface that hasn't been drawn onto. Surface size Create a Surface to draw on.
The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. However, in my program, I cannot figure out if that is true, or if the arguments are actually two sets of coordinates.
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I'm not nearly experienced to find out by looking through the pygame source code. So, if you have coordinates x1, y1 and x2, y2both of the following would work:. Learn more. Pygame Rect, what are the arguments? Ask Question. Asked 5 years, 3 months ago.
Active 5 years, 3 months ago. Viewed 6k times. Rect left,top,width,height However, in my program, I cannot figure out if that is true, or if the arguments are actually two sets of coordinates. Andrew Lalis Andrew Lalis 1 1 gold badge 9 9 silver badges 20 20 bronze badges.
Active Oldest Votes. Both of them work : class pygame. Rect x1, y1, x2-x1, y2-y1 pygame. Rect x1, y1x2-x1, y2-y1. Doorknob Doorknob AndrewLalis No, it would be Rect x1, y1, x2-x1, y2-y1. The second pair of arguments is the width and the height. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown.
The Overflow Blog.This program will draw some shapes on the display, draw "hello world! You can use every image you want, but you will need to place the image file in the same directory as your program. In this function you define display surface, the color and the position of every corner of the polygon, you can do that clockwise and counterclockwise.
Here you define the display surface, the color, the first and the last point and the width of the line. In this function you define the display surface, the color, the position, the radius and the width of the circle 0 gives a plain circle. In this function you define the display surface, the color, the position, the horizontal size, the vertical size and the width of the ellipse.
In this function you define the display surface, the color, the position and the vertical and the horizontal size of the rectangle. First you define the type and the size of your text, I use a basic font that you get with pygame. If you want to mark your text or want to define the center of your text, you have to tell pygame that with this function:.
Here you define the image you want to use, the start position x and y coordinatesand the direction of the image. Here you check the direction of the image, if it reached a corner, if so change the direction, if not, move it 5 pixels in the same direction and draw the image again.
That's what we do with this part of the code:. Download pygame PDF pygame Getting started with pygame Adding background music and sound effects Creating a pygame window Creating a simple pygame window Creating a window in pygame - pygame. Example This program will draw some shapes on the display, draw "hello world!
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