SCRIPT-8

README.md

This is a SCRIPT-8 cassette.

chains.json

{}

code.js

// title: Snake Game

init = (state) => {
    state.speed = 22;
    state.totalElapsed = 0;
    state.lastElapsed = 0;
    state.score = 0;
    state.direction = "left";
    state.snakeBody = [
        [20, 20],
        [21, 20],
        [22, 20],
        [23, 20],
        [24, 20],
    ];
    state.food = {
        x: 20,
        y: 30
    };
    state.box = {
        size: 100,
        x: 5,
        y: 13
    };
}

var directionOpposingMap = {
    up: "down",
    down: "up",
    left: "right",
    right: "left"
}

update = (state, input, elapsed) => {
    // speed control
    state.totalElapsed += elapsed;
    if (state.totalElapsed - state.lastElapsed <= 1000 / state.speed) {
        return;
    }
    state.lastElapsed = state.totalElapsed;

    // variables
  console.log(state);
    var head = state.snakeBody[0];
    var food = state.food;
    const { box } = state;
    var nextNode = null;

    // speed custom setting
    if (input.a) { state.speed += 1 };
    if (input.b) { state.speed -= 1 };

    // direction changing
    for (var key in input) {
        if (key in directionOpposingMap &&
            input[key] === true &&
            key != state.direction &&
            key != directionOpposingMap[state.direction]) {
            state.direction = key;
            break;
        }
    }

    if (state.direction === "up") { nextNode = [head[0], head[1] - 1] };
    if (state.direction === "down") { nextNode = [head[0], head[1] + 1] };
    if (state.direction === "left") { nextNode = [head[0] - 1, head[1]] };
    if (state.direction === "right") { nextNode = [head[0] + 1, head[1]] };

    // box detect
    if (nextNode[0] <= box.x) {
        nextNode[0] = box.x + box.size - 1;
    } else if (nextNode[0] >= (box.x + box.size - 1)) {
        nextNode[0] = box.x + 1;
    } else if (nextNode[1] <= box.y) {
        nextNode[1] = box.y + box.size - 1;
    } else if (nextNode[1] >= (box.y + box.size - 1)) {
        nextNode[1] = box.y + 1;
    }

    // snake body changing
    state.snakeBody.unshift(nextNode);
    if (head[0] == state.food.x && head[1] == state.food.y) {
        var randomNum = Math.floor(Math.random() * Math.floor(box.size - 1));
        food.x = box.x + 1 + randomNum;
        food.y = box.y + 1 + randomNum;
        state.score += 10;
        return;
    }
    state.snakeBody.pop();
}

draw = (state) => {
    clear();
    const { box, food } = state;
    print(0, 0, `score: ${state.score}`);
    print(76, 0, `speed: ${state.speed}`);
    print(0, 118, "press a, b to change speed");
    circStroke(food.x, food.y, 1);
    state.snakeBody.forEach(node => {
        var x = node[0], y = node[1];
        circStroke(x, y, 1);
    });
    rectStroke(box.x, box.y, box.size, box.size);
}

map.json

[]

misc.json

{
  "iframeVersion": "0.1.253",
  "lines": [
    104,
    0,
    0,
    0,
    0,
    0,
    0,
    0
  ]
}

phrases.json

{}

songs.json

{}

sprites.json

{}