Pygame viewport

You can watch a video version of this tutorial here:. The two players are KinematicBody2D objects using no-frills 8-way movement. If you need help setting up this part, see the following section in the official Godot docs: 2D Movement Overview. Note that by naming them this way, we can save time in the code by using:.

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This way both characters can use the same script for movement. Just assign the appropriate value to id for each player. Note that the map is much larger than the game screen, but aside from that everything works as intended. Create a node to serve as the root. Also, check the Stretch property so that the Viewport will automatically be set to the size of the container.

Inside each of these containers add a Viewport. Add one to each viewport. This will place it on the right side since Player 1 uses the arrow keys. The world can be set in code, but for 2D it will also display any child 2D nodes we add to it. Now when we play the scene we see the world inside the left viewport. We also need to add a world to Viewport2but we want it to use the same one. We can handle this in code. Attach a script to Main and add the following:. When we run the scene now, we see the world rendered in both viewports.

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However, neither camera is moving so we only see a small part of the world. When we run the scene now, each player is centered in its viewport and our splitscreen setup works! Add a Viewport and set its Size tothen add a Camera2D. We need to get rid of that grey area around the edges.It offers built-in handy graphical and audio libraries and we'll be using it to render the result more easily at the end of the article.

As mentioned in the previous article, OpenGL is very old so you won't find many tutorials online on how to properly use it and understand it because all of the top dogs are already knee-deep in new technologies. Since there's no point in unloading 3 books worth of graphics theory on you, we'll be using the PyGame library to give us a head start. It will essentially just shorten the process from project initialization to actual modeling and animating.

While the initialization is only three lines of code, each deserves at least a simple explanation:. Double buffering means that there are two images at any given time - one that we can see and one that we can transform as we see fit.

We get to see the actual change caused by the transformations when the two buffers swap. Since we have our viewport set up, next we need to specify what we'll be seeing, or rather where the "camera" will be placed, and how far and wide it can see. This is known as the frustum - which is just a cut off pyramid that visually represents the camera's sight what it can and can't see.

Near and far planes are used for better performance. Realistically, rendering anything outside our field of vision is a waste of hardware performance that could be used rendering something that we can actually see.

So everything that the player can't see is implicitly stored in memory, even though it isn't visually present. Here's a great video of how rendering only within the frustum looks like. Every model in OpenGL object is stored as a set of vertices and a set of their relations which vertices are connected. So theoretically if you knew the position of every single dot that is used to draw a Super Star Destroyer, you could very well draw one!

Then, we need to define how they're all connected. If we want to make a wire cube, we need to define the cube's edges:. This is pretty intuitive - the point 0 has an edge with 13and 4. The point 1 has an edge with points 35and 7and so on.

This is also intuitive - to make a quadrilateral on the top side of the cube, we'd want to "color" everything in-between the points 036and 4. Keep in mind there's an actual reason we label the vertices as indexes of the array they're defined in. This makes writing code that connects them very easy. When we're done defining the primitive, we use the function glEnd. For our program to be "killable" we need to insert the following code snippet:.

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It's basically just a listener that scrolls through PyGame's events, and if it detects that we clicked the "kill window" button, it quits the application.

We'll cover more of PyGame's events in a future article - this one was introduced right away because it would be quite uncomfortable for users and yourselves to have to fire up the task manager every time they want to quit the application. In this example, we'll be using double bufferingwhich just means that we'll be using two buffers you can think of them as canvases for drawing which will swap in fixed intervals and give the illusion of motion.

Next, if we want to continuously update our screenjust like an animation, we have to put all our code inside a while loop in which we:. In the previous article, we explained how, in theory, we need to construct a transformation that has a referral point.

Pygame Tutorial #1 - Basic Movement and Key Presses

In this example, we did a z-axis rotation in the xy-plane with the center of rotation being 1,1,1 by 30 degrees.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

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. I'm trying to duplicate the behavior of some grid viewports like 3ds Max 's Orthometric view or map viewers like GoogleMaps where we have the map or grid, which is a whole lot bigger than the screen, and we navigate by clicking somewhere in the viewport and dragging.

So far, i've managed to create a pretty big grid, draw it and make the viewport show only the tiles it should. It accelerates way too fast. I researched around to see if anyone else did this but i found only how to drag around something on a fixed screen.

I need the opposite - drag the screen around on a fixed grid. So, if anyone has any idea or advice on how to make this mechanic, or any link that i could study about it, i would be grateful! Learn more.

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Asked 6 years, 9 months ago. Active 6 years, 9 months ago. Viewed 1k times. Here is my code so far: import pygame, sys, math from pygame. Alexandros Diamantonis Alexandros Diamantonis 86 10 10 bronze badges.

Take a look at this demo. You can use the mouse to scroll the grid. Thanks, that helped me a lot!

pygame viewport

I'll post the fixed code. Active Oldest Votes. I got it working! Remember that you may accept your own answers so that people viewing this question in the future with the same problem will see that this is how the problem was solved.

For future visitors, here is the diff between the code since the post doesn't actually mention what changed and what the solution was : diffchecker. Sign up or log in Sign up using Google. Sign up using Facebook.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Game Development Stack Exchange is a question and answer site for professional and independent game developers.

It only takes a minute to sign up. I'm working in a rogue-like and I've manage to implement a camera on the player, the camera shows just the players surroundings and is fixed in the side of the windows. The problem is, when the player is close to the sides of the map there's a black space in the surface. Like so:. So after some struggles I tried the old, print whatever I had and found out that I could use the camera.

Then a couple of if-statements fixed this. But since int 's aren't very consitent depending on mapsize, cameraview, I found that the camera. And then also check that the bottomright of the camera is never bigger than the bottomright of the map. That should do the trick. Sign up to join this community.

The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Pygame Scrolling Map Ask Question. Asked 5 years, 10 months ago. Active 5 years, 9 months ago. Viewed 1k times. Like so: 1 How do I make the camera 'snap' to the side and don't go any further? I also tried a different approach using just a camera. At x, y get tile instance if tile: tile.

Anyway, here's the code for the camera. Rect self. Active Oldest Votes. I hope this helps. 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. Podcast Programming tutorials can be a real drag. Featured on Meta. Community and Moderator guidelines for escalating issues via new response…. Feedback on Q2 Community Roadmap.

Related 2.There are various controls to enable you to navigate the scene, select and manipulate Actors, and change display options while working in the viewports. There are a variety of ways in which to navigate the Unreal Editor viewports. Some can be done entirely with the mouse, with the keyboard, or with a variety of combinations between the two. Some of the controls below are configurable in the Keybindings Editor.

How to create a 2D game with Python and the Arcade library

Their default state is listed here. If you have made changes to them, they may not match. These controls represent the default behavior when clicking and dragging in the viewports with no other keys or buttons pressed. These are also the only controls that can be used to navigate the orthographic viewports.

Focuses the camera on the selected object. This is essential to make the most out of tumbling the camera. They are enabled by default and can be used whenever you are holding RMB.

This means you will still use RMB to turn the camera while navigating in this way. When navigating with WASD while holding down the RMByou can rotate the mouse wheel up to speed up your movement, or rotate the mouse wheel down to slow down your movement.

Unreal Editor supports Maya-style pan, orbit, and zoom viewport controls, making it much easier for Maya artists to jump into the tool. If you are unfamiliar, here is a breakdown of the keys:.

The use of the F key is not limited to Maya-style controls. You can always press F to focus on a selected object or group of objects. When you have one or more objects selected in the Level Viewport, the sensitivity of zoom and pan camera operations is scaled automatically with the distance between the selected objects and the camera.

This makes your camera movements feel more natural, especially when you're working with objects at extreme sizes, such as tiny mechanical parts or large landscapes. To enable scaled zoom and pan, open the Editor Preferences window.

In the first section on the right, called Controlsclick the arrow at the bottom to expand the section to display more settings. Locate the Use distance-scaled camera speed setting. Click the box to enable. You can disable this setting by clicking the box to clear it. When you have one or more objects selected in the Level Viewport, you can make the camera orbit around the pivot of the selected objects, rather than orbiting around the center of the screen.

Locate the Orbit camera around selection setting. You can select Actors in the viewport individually simply by clicking on them or in groups using a box selection in the 2D viewports:.

pygame viewport

These controls relate to moving, rotating, and scaling Actors in the viewports using the transform tools:. Moves, rotates, or scales the currently selected Actors, depending on the active transform gizmo.Jump to navigation.

Python is an outstanding language for people learning to program, and perfect for anyone wanting to "get stuff done" and not spend heaps of time on boilerplate code. Arcade is a Python library for creating 2D video games that is easy to start using, and very capable as you gain experience. In this article, I will explain how to start using Python and Arcade to program video games. I started development on Arcade after teaching students using the PyGame library.

PyGame is great, but eventually I felt like I was wasting time having to cover for bugs that were never fixed.

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I worried about teaching things like the event loopwhich was no longer the way we code. I had a whole section in which I explained why the y-coordinates were reversed. Because PyGame was seldom updated and it is based on an old SDL 1 library, rather than something like more modern like OpenGLI didn't hold a lot of hope for the future. More Python Resources Cheat sheet: Python 3. Arcade is it. And this is how to get started. Arcade, like many other packages, is available via PyPiwhich means you can install Arcade using the pip command or the pipenv command.

If you already have Python installed, you can likely just open up a command prompt on Windows and type:.

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For more detailed installation instructions, you can refer to the Arcade installation documentation. You can open a window and create simple drawings with just a few lines of code. Let's create an example that draws a smiley face like the figure below:. The script below shows how you can use Arcade's drawing commands to do this. Note that you don't need to know how to use classes or even define functions. Programming with quick visual feedback is great for anyone who wants to start learning to program.Merry Christmas to everyone!

While the Pi can easily do most things that the Arduino can and usually much more, one might have an otherwise complete project for example, something related to home theater automation that would benefit from HDMI output.

pygame viewport

Arduino display shields are not the least expensive, so why not use a RaspPi instead? There have been hacks for using RaspPi as network shield, too, and this project is very much like it actually, you could change the Pi-side code just a bit and have some network-related commands available for your Arduino in no time.

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The basic hardware premise for this hack is very straightforward — wire the Pi and Arduino together using the serial interface available on both. Because Pi is 3. You could even start the Pi server script and connect to the serial port with Putty, and the session could look a bit like the following:. The python server uses pyserial for serial communications, currently at bps, but the Pi and Arduino should be able to do as well. For graphics, pygame framework is used. Skip to content.

You could even start the Pi server script and connect to the serial port with Putty, and the session could look a bit like the following: initialize viewport - not actually implemented yet init draw a 10x10 rectangle at 5,15 draw 5 15 10 10 exit the server exit The python server uses pyserial for serial communications, currently at bps, but the Pi and Arduino should be able to do as well.

Color "blue" pygame. This site uses cookies: Find out more. Okay, thanks.

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