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60 lines
2.2 KiB
60 lines
2.2 KiB
const SIZE = 100 |
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const MAP = new Int8Array(SIZE * SIZE) // State of the Map |
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const isFree = ({ x, y }) => MAP[y * SIZE + x] === 0 // 0 = block free |
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const isOccupied = ({ x, y }) => MAP[y * SIZE + x] === 1 // 1 = block occupied |
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const isMe = ai => ai.me // is true if this AI is you |
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// `inBounds` check if our coord (n) is an existing index in our MAP |
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const inBounds = n => n < SIZE && n >= 0 |
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// `isInBounds` check that properties x and y of our argument are both in bounds |
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const isInBounds = ({ x, y }) => inBounds(x) && inBounds(y) |
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// `pickRandom` get a random element from an array |
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const pickRandom = arr => arr[Math.floor(Math.random() * arr.length)] |
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// `addToMap` save the new positions into the map |
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const addToMap = ({ x, y }) => MAP[y * SIZE + x] = 1 |
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// `update` this function is called at each turn |
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const update = state => { |
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// update is called with a state argument that has 3 properties: |
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// ais: an array of all the AIs |
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// ai: the current AI |
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// Each AIs contains: |
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// color: A number that represent the color of a AI |
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// name: A string of the AI name |
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// coords: An array of 4 coordinates of the nearest blocks |
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// Each coordinate (and AI) contains: |
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// x: The horizontal position |
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// y: The vertical position |
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// index: The computed index of the coord (x * 100 + y) |
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// cardinal: A number between 0 and 3 that represent the cardinal |
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// [ 0: NORTH, 1: EAST, 2: SOUTH, 3: WEST ] |
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// N |
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// W + E |
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// S |
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// |
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// direction: A number between 0 and 3 that represent the direction |
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// [ 0: FORWARD, 1: RIGHT, 2: BACKWARD, 3: LEFT ] |
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// note that AIs initial cardinal is random (depending on the seed) |
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// your AI cardinal is the way you are facing |
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// Saving state between each updates: |
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// I update the MAP with the new position of each AIs |
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console.log(state) |
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state.ais.forEach(addToMap) |
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// Actual AI logic: |
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// I filter my array of coords to keep only those that are in bounds |
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const coordsInBound = state.ai.coords.filter(isInBounds) |
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// I filter again to keep coords that are free |
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const available = coordsInBound.filter(isFree) |
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// And I return a random available coord |
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return pickRandom(available) |
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}
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