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<!doctype html>
<title>LDJam 57</title>
<meta charset="utf-8"/>
<meta name="viewport" content="width=device-width">
<style>
html, body {
background: #222222;
font-family: sans-serif;
height: 100%;
margin: 0;
overflow: hidden;
text-align: center;
width: 100%;
color: white;
}
h1 {
margin: 0;
}
button {
font-size: 150%;
height: 8%;
margin: 0.3em;
width: 25%;
}
canvas {
margin: auto;
}
</style>
<div id="tutorial" style="overflow-y: scroll; height: 90vh">
<h1>Depths of the Mind</h1>
<p>
The mind is an intricate thing, with many tiny components working together
in perfect harmony... Until something came in and messed everything up!
</p>
<p>
If you want to set all the pieces of the mind right, you'll need to know how
it works!
</p>
<img src=
#include "../build/tutorial_black_white.png.b64"
>
<p>
The structure of the brain consists of black blocks filling a white void.
</p>
<img src=
#include "../build/tutorial_red_yellow.png.b64"
>
<p>
Black blocks will turn red when clicked (if you have red in your inventory on the left).
While the brain is running, black blocks next to red blocks will turn red!
Red blocks will eventually tire to yellow, and then back to black. They don't stay red very long!
This is what allows the brain to send signals along a series of black blocks.
Yellow blocks can be placed with a right click on a black block (if you have one in your inventory)
</p>
<img src=
#include "../build/tutorial_direction_red.png.b64"
>
<p>
Sometimes, only one side of a block turns red.
When this happens, it will try to move in that direction (and leave a yellow behind it)
but if it cannot it will turn clockwise and try again.
</p>
<span>
<img src=
#include "../build/tutorial_blue_1.png.b64"
>
<img src=
#include "../build/tutorial_blue_2.png.b64"
>
<p>
Blue blocks need to be moved around to keep things running smoothly!
When a blue block is touched by a single red block, it will start rolling
away from it.
Each level has a goal in faint red which needs at least one blue block to be delivered to it.
Some levels will also have faint blue areas that create new blue blocks for you!
</p>
<img src=
#include "../build/tutorial_blue_clone.png.b64"
>
<p>
Finally, if a blue block touches a red block <em>while in motion</em> it will be cloned!
One will be left behind and the other will continue.
</p>
<button id="play-button">Play!</button>
</div>
<canvas style="display: none;"></canvas>
<script>
// Mirror these in src/all.c
const INPUT_NONE = 0;
const INPUT_CLICK = 1;
const INPUT_RCLICK = 2;
const INPUT_PAUSE_PLAY = 3;
const INPUT_MOVE = 4;
const INPUT_RESTART = 5;
const WASM =
#include "../build/main.wasm.b64"
const MUSIC =
#include "../build/music.mp3.b64"
const IMAGES = [
#include "../build/continue.png.b64"
,
#include "../build/exit.png.b64"
,
#include "../build/pause.png.b64"
,
#include "../build/play.png.b64"
,
#include "../build/restart.png.b64"
,
#include "../build/nelson.png.b64"
,
#include "../build/nelson_left.png.b64"
,
#include "../build/nelson_up.png.b64"
,
#include "../build/nelson_right.png.b64"
,
#include "../build/nelson_down.png.b64"
,
];
async function main() {
let bytes = Uint8Array.from(atob(WASM), function(c) {
return c.charCodeAt(0);
});
let module = await WebAssembly.compile(bytes);
let wasm = await WebAssembly.instantiate(module);
let exports = wasm.exports;
let html = document.querySelector("html");
let canvas = document.querySelector("canvas");
const tutorial = document.querySelector("#tutorial");
let ctx = canvas.getContext("2d");
let memory = exports.memory;
let mousex = 0;
let mousey = 0;
const audio = new Audio();
audio.src = MUSIC;
audio.volume = 0.2;
audio.loop = true;
let musicPlaying = false;
let images = [null];
for (let i = 0; i < IMAGES.length; i++) {
const image = new Image();
image.src = IMAGES[i];
images.push(image);
}
const start = Date.now();
function now() {
return Date.now() - start;
}
function min(a, b) {
return b<a ? b : a;
}
function render() {
if (64 + html.clientHeight * (20 / 16) > html.clientWidth) {
canvas.width = html.clientWidth;
canvas.height = (html.clientWidth - 64) * (16 / 20);
} else {
canvas.width = 64 + html.clientHeight * (20 / 16);
canvas.height = html.clientHeight;
}
let width = canvas.width;
let height = canvas.height;
let ptr = exports.game_render(width, height, mousex, mousey);
let dl = new Int32Array(memory.buffer, ptr);
let len = dl[0];
let ops = dl.subarray(1);
ctx.fillStyle = "#000000";
ctx.fillRect(0, 0, width, height);
for (let i = 0; i < len; i++) {
let op = ops.subarray(7*i, 7*i+7);
const color = new Uint8Array(new Uint32Array(op.subarray(4, 6)).buffer);
ctx.fillStyle = `#${color[0].toString(16).padStart(2, "0")}${color[1].toString(16).padStart(2, "0")}${color[2].toString(16).padStart(2, "0")}`;
ctx.globalAlpha = color[3] / 255;
ctx.fillRect(op[0], op[1], op[2], op[3]);
ctx.strokeStyle = `#${color[4].toString(16).padStart(2, "0")}${color[5].toString(16).padStart(2, "0")}${color[6].toString(16).padStart(2, "0")}`;
ctx.globalAlpha = color[7] / 255;
ctx.strokeRect(op[0], op[1], op[2], op[3]);
const image = new Uint8Array(new Uint32Array(op.subarray(6, 7)).buffer);
if (image[0] !== 0) {
console.log(image);
ctx.globalAlpha = image[1] / 255;
ctx.drawImage(images[image[0]], op[0], op[1], op[2], op[3]);
}
}
}
function onresize() { /*html.style.maxWidth = `${max_width()}px`; */}
window.addEventListener("resize", onresize);
onresize();
function doUpdate(input) {
if (exports.game_update(input, mousex, mousey, now()) !== 0) {
canvas.style.display = "none";
tutorial.style.display = "block";
}
}
canvas.addEventListener("mousemove", function(e) {
const rect = e.target.getBoundingClientRect();
mousex = e.clientX - rect.left;
mousey = e.clientY - rect.top;
doUpdate(INPUT_MOVE);
});
canvas.addEventListener("mousedown", function(e) {
const rect = e.target.getBoundingClientRect();
mousex = e.clientX - rect.left;
mousey = e.clientY - rect.top;
if (e.button == 0) {
doUpdate(INPUT_CLICK);
} else if (e.button == 2) {
e.preventDefault();
doUpdate(INPUT_RCLICK);
}
});
document.getElementById("play-button").addEventListener("click", function (e) {
if (!musicPlaying) {
musicPlaying = true;
audio.play();
}
canvas.style.display = "block";
tutorial.style.display = "none";
});
canvas.addEventListener("contextmenu", function (e) {
e.preventDefault();
});
document.addEventListener("keydown", function (e) {
if (e.key === " ") {
doUpdate(INPUT_PAUSE_PLAY);
} else if (e.key == "r") {
doUpdate(INPUT_RESTART);
}
});
function animate() {
// TODO: stop requesting frames when state is static
requestAnimationFrame(animate);
doUpdate(INPUT_NONE);
render();
}
requestAnimationFrame(animate);
exports.game_init();
}
main()
</script>
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