1
0
www.mikescher.com/www/statics/aoc/2019/11_solution-1.ts

328 lines
7.8 KiB
TypeScript

namespace AdventOfCode2019_11_1
{
const DAY = 11;
const PROBLEM = 1;
export async function run()
{
let input = await AdventOfCode.getInput(DAY);
if (input == null) return;
const code = input.trim().split(",").map(p => parseInt(p.trim()));
const rnr = new Interpreter(code, []);
let map: { [_:number]:number } = {};
let ctr = 0;
let x=1000;
let y=1000;
let d=0; //0=UP|1=RIGHT|2=DOWN|3=LEFT
for(;;)
{
ctr++;
//let str = "";
//for(let yy=990;yy<1010;yy++)
//{
// for(let xx=990;xx<1010;xx++)
// {
// if (x==xx && y== yy)
// {
// if (d==0)str += "^";
// if (d==1)str += ">";
// if (d==2)str += "v";
// if (d==3)str += "<";
// }
// else if ((((yy*10000+xx) in map) ? map[yy*10000+xx] : 0) == 0)
// {
// str += ".";
// }
// else
// {
// str += "#";
// }
// }
// str += "\n";
//}
//AdventOfCode.outputConsole(str);
//if (ctr>20) return;
const col = ((y*10000+x) in map) ? map[y*10000+x] : 0;
for(;;)
{
let rr = rnr.singleStep();
if (rnr.output.length == 2) break;
if (rnr.is_halted) break;
if (rr == StepResult.WAITING_FOR_IN) { rnr.inputqueue.push(col); }
}
if (rnr.is_halted) break;
const newcol = rnr.output[0];
const newdir = rnr.output[1];
AdventOfCode.outputConsole(`[${newcol}|${((newcol==0)?'.':'#')}] | [${newdir}|${((newdir==0)?'L':'R')}]`);
rnr.output = [];
map[y*10000+x] = newcol;
if (d==0 && newdir==0) { d=3;x--; }
else if (d==0 && newdir==1) { d=1;x++; }
else if (d==1 && newdir==0) { d=0;y++; }
else if (d==1 && newdir==1) { d=2;y--; }
else if (d==2 && newdir==0) { d=1;x++; }
else if (d==2 && newdir==1) { d=3;x--; }
else if (d==3 && newdir==0) { d=2;y--; }
else if (d==3 && newdir==1) { d=0;y++; }
}
AdventOfCode.output(DAY, PROBLEM, Object.keys(map).length.toString());
}
class Interpreter
{
program: InfMem;
inputqueue: number[];
instructionpointer: number;
output: number[];
relative_base: number;
is_halted: boolean = false;
constructor(prog: number[], input: number[])
{
this.program = new InfMem(prog);
this.inputqueue = input;
this.instructionpointer = 0;
this.output = [];
this.relative_base = 0;
}
fullRun() : number[]
{
while(!this.is_halted)
{
const r = this.singleStep();
if (r === StepResult.EXECUTED) continue;
if (r === StepResult.HALTED) return this.output;
if (r === StepResult.WAITING_FOR_IN) throw "not enough input";
throw "unknown output of singleStep";
}
return this.output;
}
singleStep() : StepResult
{
const cmd = new Op(this.program.r(this.instructionpointer));
if (cmd.opcode == OpCode.ADD)
{
const p0 = cmd.getParameter(this, 0);
const p1 = cmd.getParameter(this, 1);
const pv = p0 + p1;
cmd.setParameter(this, 2, pv);
this.incInstrPtr(cmd);
return StepResult.EXECUTED;
}
else if (cmd.opcode == OpCode.MUL)
{
const p0 = cmd.getParameter(this, 0);
const p1 = cmd.getParameter(this, 1);
const pv = p0 * p1;
cmd.setParameter(this, 2, pv);
this.incInstrPtr(cmd);
return StepResult.EXECUTED;
}
else if (cmd.opcode == OpCode.HALT)
{
this.is_halted = true;
return StepResult.HALTED;
}
else if (cmd.opcode == OpCode.IN)
{
if (this.inputqueue.length == 0) return StepResult.WAITING_FOR_IN;
const pv = this.inputqueue[0];
cmd.setParameter(this, 0, pv);
this.inputqueue = this.inputqueue.slice(1);
this.incInstrPtr(cmd);
return StepResult.EXECUTED;
}
else if (cmd.opcode == OpCode.OUT)
{
const p0 = cmd.getParameter(this, 0);
this.output.push(p0);
//AdventOfCode.outputConsole("# " + p0);
this.incInstrPtr(cmd);
return StepResult.EXECUTED;
}
else if (cmd.opcode == OpCode.TJMP)
{
const p0 = cmd.getParameter(this, 0);
if (p0 != 0) this.instructionpointer = cmd.getParameter(this, 1);
else this.incInstrPtr(cmd);
return StepResult.EXECUTED;
}
else if (cmd.opcode == OpCode.FJMP)
{
const p0 = cmd.getParameter(this, 0);
if (p0 == 0) this.instructionpointer = cmd.getParameter(this, 1);
else this.incInstrPtr(cmd);
return StepResult.EXECUTED;
}
else if (cmd.opcode == OpCode.LT)
{
const p0 = cmd.getParameter(this, 0);
const p1 = cmd.getParameter(this, 1);
const pv = p0 < p1 ? 1 : 0;
cmd.setParameter(this, 2, pv);
this.incInstrPtr(cmd);
return StepResult.EXECUTED;
}
else if (cmd.opcode == OpCode.EQ)
{
const p0 = cmd.getParameter(this, 0);
const p1 = cmd.getParameter(this, 1);
const pv = p0 == p1 ? 1 : 0;
cmd.setParameter(this, 2, pv);
this.incInstrPtr(cmd);
return StepResult.EXECUTED;
}
else if (cmd.opcode == OpCode.ARB)
{
const p0 = cmd.getParameter(this, 0);
this.relative_base = this.relative_base+p0;
this.incInstrPtr(cmd);
return StepResult.EXECUTED;
}
else throw "Unknown Op: " + cmd.opcode + " @ " + this.instructionpointer;
}
private incInstrPtr(cmd: Op)
{
this.instructionpointer += 1 + cmd.parametercount;
}
}
enum StepResult { EXECUTED, HALTED, WAITING_FOR_IN }
enum OpCode
{
ADD = 1,
MUL = 2,
IN = 3,
OUT = 4,
TJMP = 5,
FJMP = 6,
LT = 7,
EQ = 8,
ARB = 9,
HALT = 99,
}
enum ParamMode
{
POSITION_MODE = 0,
IMMEDIATE_MODE = 1,
RELATIVE_MODE = 2,
}
class Op
{
opcode: OpCode;
modes: ParamMode[];
name: string;
parametercount: number;
constructor(v: number)
{
this.opcode = v%100;
v = Math.floor(v/100);
this.modes = [];
for(let i=0; i<4; i++)
{
this.modes.push(v%10);
v = Math.floor(v/10);
}
if (this.opcode == OpCode.ADD) { this.name="ADD"; this.parametercount=3; }
else if (this.opcode == OpCode.MUL) { this.name="MUL"; this.parametercount=3; }
else if (this.opcode == OpCode.HALT) { this.name="HALT"; this.parametercount=0; }
else if (this.opcode == OpCode.IN) { this.name="IN"; this.parametercount=1; }
else if (this.opcode == OpCode.OUT) { this.name="OUT"; this.parametercount=1; }
else if (this.opcode == OpCode.TJMP) { this.name="TJMP"; this.parametercount=2; }
else if (this.opcode == OpCode.FJMP) { this.name="FJMP"; this.parametercount=2; }
else if (this.opcode == OpCode.LT) { this.name="LT"; this.parametercount=3; }
else if (this.opcode == OpCode.EQ) { this.name="EQ"; this.parametercount=3; }
else if (this.opcode == OpCode.ARB) { this.name="ARB"; this.parametercount=1; }
else throw "Unknown opcode: "+this.opcode;
}
getParameter(proc: Interpreter, index: number): number
{
const prog = proc.program;
const ip = proc.instructionpointer;
let p = prog.r(ip+1+index);
if (this.modes[index] == ParamMode.POSITION_MODE) p = prog.r(p);
else if (this.modes[index] == ParamMode.IMMEDIATE_MODE) p = p;
else if (this.modes[index] == ParamMode.RELATIVE_MODE) p = prog.r(proc.relative_base+p);
else throw "Unknown ParamMode: "+this.modes[index];
return p;
}
setParameter(proc: Interpreter, index: number, value: number): void
{
const prog = proc.program;
const ip = proc.instructionpointer;
let p = prog.r(ip+1+index);
if (this.modes[index] == ParamMode.POSITION_MODE) prog.w(p, value);
else if (this.modes[index] == ParamMode.IMMEDIATE_MODE) throw "Immediate mode not allowed in write";
else if (this.modes[index] == ParamMode.RELATIVE_MODE) prog.w(proc.relative_base+p, value);
else throw "Unknown ParamMode: "+this.modes[index];
}
}
class InfMem
{
private data: { [_:number]:number } = {};
constructor(v: number[])
{
for(let i=0; i<v.length;i++) this.data[i]=v[i];
}
r(pos: number): number
{
if (!(pos in this.data)) this.data[pos] = 0;
return this.data[pos];
}
w(pos: number, val: number): number
{
return this.data[pos] = val;
}
}
}