# Star

2015-05-01, post № 23

programming, Pygame, Python, #around the center, #black, #black and white, #blue, #change, #changing, #circle, #color, #controlled, #creating, #degree, #shape, #shape shifting, #shift, #simulation, #star, #star shape

I had an idea to make a simulation which generates stars. Using my getCirclePos() function, two radii — an inner and an outer one — and a number of points I realized the idea in this program.

## How it works

• $\frac{360^\circ}{\text{number of points}}=\text{circle sector}$
• $\frac{360^\circ}{\text{number of points} \cdot 2}=\text{shifted circle sector}$
• Using those to sectors — and alternating between the inner (shifted) and outer radius — the program connects the points and out comes a star shape.

## How to use

• ‘d’ toggles debug mode (gray circles),
• ‘f’ toggles points being drawn (blue points at the corners).
Source code: star.py

# Worldwide Pinhole Day

2015-04-26, post № 22

art, #anim, #animated, #animated gif, #day, #gif, #photo, #photography, #pinhole, #pinhole day, #worldwide, #WW Pinhole Day

Get out your pinhole camera and take a photo!

# Bouncing

2015-04-25, post № 21

programming, Pygame, Python, #3D, #background, #ball, #balls, #bounce off, #bounce off ground, #bouncing balls, #change, #changing, #circle, #circles, #circular, #collision, #color, #color change, #colors, #controlled, #creating, #fade, #fade away, #fade to, #fading, #orange, #round, #three-dimensional, #yellow

This simulation lets you spawn in circular entities which then bounce off the groung and fade into the background. You can toggle if they are moving, the screen gets refilled and if they have a black border around them. The three-dimensional illusion comes from the balls getting slowly smaller and blending to the background color. Eventually the balls will ‘die’ (be removed), when they have reached a minimum size.

## Usage

• Clicking on the screen spawns in a new ball,
• ‘b’ toggles if the black border is shown,
• ‘f’ toggles if screen gets refilled,
• ‘m’ toggles if balls are moving,
• ‘k’ kills all the balls.
Source code: bouncing.py

# Circle crawler

2015-04-19, post № 20

programming, Pygame, Python, #around, #around the center, #black, #center, #change, #changing, #circle, #distance, #fill, #filling, #move, #movement, #moving, #red, #relation, #vec, #vector

In this program there are entities equally positioned around the center. As the entities begin to move, they can either go toward the center, away from the center or stay. You can toggle if the entities move and if the screen gets refilled. The code is based on ‘Circle Walk II’, but the calculation for the entities to move in relation to the center is achieved by using vectors.

## Usage

• ‘m’ to toggle if entities are moving,
• ‘f’ to toggle if the screen gets refilled.
Source code: circle-crawler.py

# Plant mimic

2015-04-18, post № 19

programming, Pygame, Python, #behavior, #black, #black and white, #growing, #growth, #mimic, #offspring, #plant, #plant behavior, #pseudo random, #random, #root, #roots, #simulation, #white

I was trying to mimic plant root-growth behavior. It all starts with one root, which then has a chance to get offspring (𝟢 to 𝟦). If it gets offspring, the offspring also gets a chance for more offspring. To reduce lag there is a maximum to the currently growing roots (𝟣𝟢𝟢). Due to the random behavior, it is possible for the plant to die at the start or — theoretically — in an advanced state.

Source code: plant-mimic.py

# FS letters

2015-04-12, post № 18

programming, Pygame, Python, #color, #different colors, #every file, #fade, #fading, #file, #files, #filesystem, #fs, #letters, #Macintosh, #random, #red, #red letters, #user

This program goes through all the filenames from every user (it is made for Macintosh), checks the filename and counts the individual letters. Those letters are then displayed on the screen, the most common ones big and bright and the least common ones dark and small. The letters will appear in a random order.

## How to use

• If you start the program, a black screen will appear. Press ‘Space’ and the screen will get red and begin to fade. After the screen is faded out, it gets black and the program freezes (checks your whole filesystem). After this freeze the above mentioned happens (check images below).
Source code: fs-letters.py

# Rand pix

2015-04-11, post № 17

programming, Pygame, Python, #background, #beautiful, #black, #change, #changing, #colro, #color change, #colors, #different colors, #fancy, #generates, #gradient, #movement, #moving, #random, #randomly, #snake, #snakes, #walk, #walking, #wallpaper

This program generates a snake of pixels which is randomly moving across the screen. If it leaves the screen, it (as in snakes) gets out the other side. It is also restricted to a length of 𝟣𝟢𝟢𝟢 pixels. As in ‘Colors V’ there are other ways the snake can look, based on the code used (I may post another color variant in the future).

Source code: rand-pix.py

# Hangman

2015-04-10, post № 16

games, programming, Python, #ASCII, #based on terminal, #based on text, #black, #black and white, #game, #guess, #guessing, #guessing game, #hangman, #on terminal, #playable on terminal, #terminal, #terminal game, #terminal output, #text, #text-based, #words

On a recent train ride I made a little Python program to play Hangman.
My version has 7 stages (you could implement more by changing the STAGES variable) and is at best playable if you have someone else who gives you a word (you can also type ‘r’ for a random word, but the list of random words is not very long).

Source code: hangman.py
Jonathan Frech's blog; built 2024/05/27 06:43:58 CEST