World.ts

import {SimpleObject} from "./Types";

/********************************************************************************
** World

Interface definitions for worlds.
You don't have to edit this file.
********************************************************************************/


// The state of the world.
// The 'stacks' is a list of stacks, where each stack is a list of strings.
// The strings themselves are identifiers, i.e. keys into the `objects` map.

export interface WorldState {
    stacks  : string[][][]; // Where the objects are located in the world.
    holding : string;     // Which object the robot is currently holding.
    arm     : [number, number];     // The row, column position of the robot arm.
    objects : {[s:string]: SimpleObject}; // A mapping from object id's to object definitions
    examples: string[];   // List of predefined example utterances that the user can choose from in the UI.
}


// Interface for a world. Abstracts over the I/O required to read user input,
// print the world and perform a plan. This is needed to support the backends,
// i.e. the SVG backend that is used in the browser, and the text-based console backend.

export interface World {
    currentState : WorldState;

    printWorld(callback? : () => void) : void;
    performPlan(plan: string[], callback? : () => void) : void;

    readUserInput(prompt : string, callback : (input:string) => void) : void;
    printSystemOutput(output : string, participant? : string) : void;
    printDebugInfo(info : string) : void;
    printError(error : string, message? : string) : void;
}

export function world_object_counter(object : SimpleObject, state : WorldState) : number {

    for (var i in state.objects) {

        var obj1 = state.objects[i];

        if (obj1 == object) continue;

        if (obj1.form == object.form && obj1.color == object.color && obj1.size == object.size){
            //console.log(`${obj1.toString()} and ${object.toString()}`)
            return 2;	// no need to check if more than two similar objects
        }
    }

    return 1;
}