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'use strict';
import { random_choice, apply, shuffle } from '../util.js';
import { senses } from './senses.js';
import { actions } from './actions.js';
import { lattice_rules } from './lattice_rules.js';
import { validity } from './validity.js';
function is_wall(size, x, y) {
return (
x === 0 || x === size-1 ||
y === 0 || y === size-1
);
}
function is_corner(size, x, y) {
const subsize = Math.floor(size/3);
return (
(x < subsize || x >= 2*subsize) &&
(y < subsize || y >= 2*subsize)
);
}
export function get_team(size, x, y) {
const subsize = Math.floor(size/3);
if (y < subsize) {
return 0;
} else if (x >= 2*subsize) {
return 1;
} else if (y >= 2*subsize) {
return 2;
} else if (x < subsize) {
return 3;
} else {
return undefined;
}
}
export function setup_board(size) {
const lattice = [...Array(size)]
.map(() => [...Array(size)])
.map((row, y) => row.map((_, x) => {
if (is_wall(size, x, y)) {
return { type: 'immutable', flags: {} };
} else if (is_corner(size, x, y)) {
return { type: 'immutable', flags: {} };
} else {
const team = get_team(size, x, y);
return { type: 'empty', flags: { team } };
}
}));
return lattice;
}
export function create_world(size, teams) {
const lattice = setup_board(size);
const agents = teams.reduce(
(agents, team, team_num) => {
const team_cells = lattice.map((row, y) => row.map((cell, x) => [x, y, cell])).flat()
// only check cells with the right team
.filter(([x, y, cell]) => cell.type === 'empty' && cell.flags.team === team_num)
return agents.concat(team.reduce(
(acc, agent) => {
const available_cells = team_cells.filter(([x, y, cell]) => acc.reduce(
(occupied, a) => occupied && ((a.x !== x) || (a.y !== y)),
true
))
const [x, y, ..._] = random_choice(available_cells);
const orientation = random_choice([ 'n', 'e', 's', 'w' ]);
return [...acc, {...agent, x, y, flags: { ...agent.flags, orientation } }];
},
[]
));
},
[]
).flat();
return { lattice, lattice_rules, agents, actions, senses, validity };
};
// team structure:
// {
// agents
// genome
// score
// }
let agent_id = 0;
export function create_agent(genome, n_internal) {
return {
id: agent_id++, // !!!! side effect !!!!
net: parse_genome,
state: [...Array(n_internal)].map(_ => (2*Math.random()) - 1),
}
}
const N_INPUT = senses.reduce((acc, sense) => acc + sense.size, 0);
const N_OUTPUT = actions.reduce((acc, action) => acc + action.size, 0);
const MAX_MUTATIONS = 15;
export function create_team(size, genome_size, n_internal) {
const genome = apply(
s => mut_genome_insert(s, 4, Math.random(), Math.random(), Math.random()),
genome_size,
[N_INPUT, n_internal, N_OUTPUT, []],
).slice(-1)[0];
const agents = [...Array(size)].map(_ => create_agent(genome, n_internal));
return { agents, genome, score: 0 };
}
export function child_team(team, keep=Math.floor(team.size/2)) {
const n_internal = get_size(team.genome) - N_INPUT - N_OUTPUT;
const genome = apply(
s => mutate_genome(s, 4),
Math.floor(MAX_MUTATIONS * Math.random()),
[N_INPUT, n_internal, N_OUTPUT, team.genome]
);
const old_agents = [...Array(team.agents.length - keep)].reduce(
(acc, _) => {
const idx = Math.floor(Math.random() * acc.length);
acc.splice(idx, 1);
return acc;
},
);
const new_agents = [...Array(team.agents.length - keep)].map(_ => create_agent(genome, n_internal));
const agents = [old_agents, new_agents].flat();
return { agents, genome, score: 0 };
}
// game structure:
// {
// world: world
// team_indices: number[]
// time: number
// }
export function create_game(teams, team_indices) {
const world = create_world(999, team_indices.map(i => teams[i].agents));
return { world, team_indices, time: 0 };
}
export function step_game(game) {
return {
...game,
world: world_update(world, postprocess),
time: game.time + 1,
};
}
function score(lattice, team_num) {
const size = lattice.length;
// count number of flags in the team's area
return lattice
.map((row, y) => row.map((cell, x) => [x, y, cell]))
.flat()
.filter(([x, y, cell]) => get_team(size, x, y) === team_num && cell.type === 'flag')
.length;
}
export function finish_game(teams, game) {
const scores = [0, 1, 2, 3].map(t => score(game.world.lattice, t));
return game.team_indices.reduce(
(acc, idx, i) => {
const team = teams[idx];
acc.splice(idx, 1, {...team, score: team.score + scores[i]});
return acc;
},
teams,
);
}
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