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import { lattice_update, lattice_valid, lattice_apply } from './lattice.js';
import { agent_decide, agent_apply } from './agent.js';
import { proposal_merge } from './proposal.js';
// world structure:
// {
// lattice
// lattice_rules: object
// agents: agent[]
// senses: sense[]
// actions: action[]
// validity: (function(proposal) => bool)[]
// }
export function world_update(world, postprocess=[]) {
const lattice_props = lattice_update(world.lattice, world.lattice_rules);
const intermediate_lattice = lattice_apply(
world.lattice.map(row => row.map(cell => ({ ...cell, flags: {} }))),
lattice_props
);
const decisions = world.agents
.map(a => agent_decide(world, a, world.senses, world.actions))
.reduce(
([agents, props], [agent, prop]) => [[...agents, agent], [...props, prop]],
[[], []]
);
const intermediate_agents = decisions[0];
const agent_props = world.validity.reduce(
(acc, rule) => acc.filter(prop => rule({...world, lattice: intermediate_lattice}, prop)),
decisions[1]
.flat()
.reduce((acc, prop) => proposal_merge(acc, prop), [])
.filter(prop => lattice_valid(intermediate_lattice, prop))
);
const lattice = lattice_apply(intermediate_lattice, agent_props);
const agents = intermediate_agents.map(a => agent_apply(a, agent_props));
const new_world = {...world, lattice, agents};
return postprocess.reduce(
(acc, f) => f(acc),
new_world
);
}
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