Python Text Game Template
I made a small text adventure. I'm not trying to make it appealing to anyone, but rather just to practice my Python skills. I am fairly new to Python and this was my next step after making a console calculator and BMI calculator. I would like someone to tell me how this code could be better optimised, less work, etc.
- Write for DigitalOcean You get paid. And then walk you through creating a template to develop games with pygame and Python 3. To begin to approach game development through setting up a template that you can use for controlling the main loop of a Python game.
- A template for a text based adventure game in Python. This is designed for students learning Python to adapt and extend in order to create their own adventure games. ##Recommended usage: Provide students with the uncommented version of the program and in pairs they should complete the following tasks: Use the Secret Agent Adventure Game.
4.1.2 Template strings
Templates provide simpler string substitutions as described in PEP 292.Instead of the normal '%'-based substitutions, Templates support'$'-based substitutions, using the following rules:
- '$$' is an escape; it is replaced with a single '$'.
- '$identifier' names a substitution placeholder matching a mapping key of 'identifier'. By default, 'identifier' must spell a Python identifier. The first non-identifier character after the '$' character terminates this placeholder specification.
- '${identifier}' is equivalent to '$identifier'. It is required when valid identifier characters follow the placeholder but are not part of the placeholder, such as '${noun}ification'.
Any other appearance of '$' in the string will result in aValueError being raised.
New in version 2.4.
The string module provides a Template class that implementsthese rules. The methods of Template are:
| template) |
| mapping[, **kws]) |
| mapping[, **kws]) |
While other exceptions may still occur, this method is called ``safe' becausesubstitutions always tries to return a usable string instead of raising anexception. In another sense, safe_substitute() may be anything otherthan safe, since it will silently ignore malformed templates containingdangling delimiters, unmatched braces, or placeholders that are not validPython identifiers.
Template instances also provide one public data attribute:
Text Pua
- template
- This is the object passed to the constructor's template argument. Ingeneral, you shouldn't change it, but read-only access is not enforced.
Here is an example of how to use a Template:
Advanced usage: you can derive subclasses of Template to customize theplaceholder syntax, delimiter character, or the entire regular expression usedto parse template strings. To do this, you can override these classattributes:
- delimiter - This is the literal string describing a placeholder introducing delimiter. The default value '$'. Note that this should not be a regular expression, as the implementation will call re.escape() on this string as needed.
- idpattern - This is the regular expression describing the pattern for non-braced placeholders (the braces will be added automatically as appropriate). The default value is the regular expression '[_a-z][_a-z0-9]*'.
Alternatively, you can provide the entire regular expression pattern byoverriding the class attribute pattern. If you do this, the value mustbe a regular expression object with four named capturing groups. Thecapturing groups correspond to the rules given above, along with the invalidplaceholder rule:
- escaped - This group matches the escape sequence, e.g. '$$', in the default pattern.
- named - This group matches the unbraced placeholder name; it should not include the delimiter in capturing group.
- braced - This group matches the brace enclosed placeholder name; it should not include either the delimiter or braces in the capturing group.
- invalid - This group matches any other delimiter pattern (usually a single delimiter), and it should appear last in the regular expression.
How to code your own adventure game in Python
The Raspberry Pi is a wonderful piece of technology, but many people don't use it to its full potential. With your Raspberry Pi you can create anything you want – a robot that senses its environment, a media centre to watch movies, or a world of fantasy and adventure created from some simple lines of code and a lot of imagination from yourself.
In the 1980s, computer graphics were still in their infancy, with blocky game characters and a limited palette of colours to work with. It was very common for adventure and role-playing games to be completely text-driven, with the player using their imagination to create visions of the game world.
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Games such as Zork created rich worlds, with engaging stories and characters, but with very few graphics to illustrate the environments. This remained the case until the late 1980s and early 90s, and only changed due to some fantastic work by LucasArts, which created a collection of classic graphic adventure games such as Loom, Monkey Island and Full Throttle.
For this tutorial, we will be using our Raspberry Pi and a programming language called Python to create our very own text adventure, with our own game world and some characters to inhabit that world. And all of this will be created using some Python code and a few programming concepts.
Python is an easy-to-learn programming language, which has become a firm favourite for Raspberry Pi users and schools across the UK.
So what is Python?
Python is a textual programming language, and by that we mean that it is typed into an editor. Python uses a very forgiving syntax and is very easy to read, which makes learning to code a really enjoyable experience.
On the Raspberry Pi, we already have a great code editor installed as standard – it's called IDLE and we will be using it to build our game. You can find a link to IDLE on the Raspberry Pi desktop.
Text Pua Game
Python comes pre-installed on every Raspberry Pi that is running the Raspbian operating system. If you haven't got Raspbian installed on your Pi, you can grab a copy from the Raspberry Pi website.
It is part of the easy-to-use NOOBS (New Out Of the Box Software) archive, which can be downloaded and then extracted to a blank 4GB (or greater) SD card.
Currently there are two versions of Python available: versions 2.7 and 3. For this tutorial, we will be using 2.7, because it has the greatest amount of support and documentation. Python 3 is an excellent language to learn and it is certainly the future of the language, but it is currently in a state of flux and should only be used by experienced Python programmers.
Python Text Game Code
Creating a narrative
Our game needs two things: a story to keep the player entertained, and logic to control how the story unfolds. For our story we're creating the world of Narule, where magic and adventure are around every corner. And we're creating a hero – you – who must travel the land, visiting new villages and settlements, and talking to people to learn more about this land and the dark shadow cast upon it.
To start our project off, we've created some narrative for you to expand upon. Feel free to make the story your own – that's the whole point of this tutorial. This is your game. To get you started, we've created some code to act as a starter template. You can download a free copy here.
Simple Python Text Game
Download the code, then open it using IDLE ('File > Open' and navigate to where you downloaded the code). Now take a look at the code and pay particular attention to any lines that start with a #, because these are comments in the code, which have been added to help you understand what the code is doing at that point.
Currently our code has a basic story for us to expand upon, and we will do that during the course of this tutorial. Our story unfolds via blocks of text that form our narrative, and you will see that each block looks similar to this:
Hp laptop freezes then unfreezes on netflix. chapter1 = 'It was a cold night, and the rain swept in from
the west with a ferocity known only to the gods'
These are called variables, and they enable us to store lots of text or numbers. We use them to contain our story, and then when we want to use them, we use the print function like this:
print chapter1
The print function looks inside the variable and prints its contents on the screen, which is really handy and means that we only have to write the story once and we can re-use it as many times as we wish.