geom dsh

An entire game fit within the limited space of a tweet!

Full game code:

o=[0,3,7],h=b=f=0,s=2,setup=_=>createCanvas(400,400),draw=_=>{R=rect,f++,s+=.001,background(9), R(0,h,20),7<h&&(y-=.5,h+=y),(o).map(p=>{x=99*((p-s*f/99)%6+5.9),R(x,0,20),9>h&&9>x&&(s=2,f=0)}) ,b>(c=s*99|0)||(b=c),fill(255),text(`#LDJam ${b} ${c}`,0,99)},keyPressed=_=>0<h||(y=8,h=8)

You can paste that code into the p5js editor to run the game.

Controls:

• Press any key to jump
• Die to restart

Documented code

Here's the documented code. Had to use a lot of tricks and cut a lot to get the game under 280 characters.

``` // Initialize obstacle array. o=[0,3,7], // Initialize height, best score and frame count. h=b=f=0, // Initialize speed. s=2, // Other variables like the current score and the vertical speed get initialized when they're first set.

// Create the canvas for the game. setup==>createCanvas(400,400), draw==>{ // Alias function name that are used more than once. R=rect, // Update frame count f++, // Slowly increase speed. s+=.001, // Clear the canvas. 9 is a very dark grey instead of 0 (black) to be slightly different to black but effectively it's still black. background(9), // Draw the player. R(0,h,20), // If the player is in the air... // 7 is the height of the cube just before we reach the ground, // Which means the last time we run this, the player will be on the ground. // This avoids code that checks if the player is touching the ground. // Uses the short-circuit behavior of the && operator to acts as a branch statement. 7{ // Calculate the x position of the obstacle. x=99( // An initial position that moves with the speed * frame count (p-sf/99) // This uses module to make the obstacles loop around the screen. // It also abuses the way negative modulos work to make some obstacles appear later. // Because we add 5.9 at the end, the x position will only be 0 when (p-sf) is negative. // So if we pick larger values for p, those obstacles will be delayed, // so the game gets more difficult over time. // These numbers are also picked so that obstacles loop just after they reach the end of the screen, // so the collision check use less characters. %6+5.9), // Draw the obstacle R(x,0,20), // Check collsion: // If h < 9 (the player is roughly on the ground) and // x < 9 (the obstacle is near the player) // The obstacle check can be one-sided because of how the obstacles loop. 9>h&&9>x&& // Reset the game by resetting the speed and frame count. (s=2,f=0)} ), // If the best score is less than the score b>( // Turn the speed into a score variable, // multiplying to be a nicer number and converting to integer. c=s99|0 // Update the best score )||(b=c), // Text color to white fill(255), // Draw both the current score and the best one text(#LDJam ${b} ${c},0,99) }, // Keyboard input: When any key is pressed... keyPressed=_=> // If the player is on the ground 0

Ended up with enough space to fit the hashtag in there :)