344 lines
7.9 KiB
TypeScript
344 lines
7.9 KiB
TypeScript
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namespace AdventOfCode2019_13_2
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{
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const DAY = 13;
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const PROBLEM = 2;
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export async function run()
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{
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let input = await AdventOfCode.getInput(DAY);
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if (input == null) return;
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const code = input.trim().split(",").map(p => parseInt(p.trim()));
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code[0] = 2;
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const rnr = new Interpreter(code, []);
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let world: { [_:number]:[number, number, number] } = {};
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let score = 0;
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let minx=0;
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let maxx=0;
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let miny=0;
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let maxy=0;
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for(;;)
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{
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const ssr = rnr.singleStep();
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if (ssr === StepResult.HALTED) break;
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if (rnr.output.length === 3)
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{
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const x = rnr.output[0];
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const y = rnr.output[1];
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const v = rnr.output[2];
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rnr.output = [];
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if (x===-1 && y === 0)
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{
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score = v;
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}
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else
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{
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world[y*10000+x]=[x,y,v];
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minx = Math.min(minx, x);
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maxx = Math.max(maxx, x);
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miny = Math.min(miny, y);
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maxy = Math.max(maxy, y);
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}
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}
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if (ssr === StepResult.WAITING_FOR_IN)
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{
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const paddle = avgpos(world, 3);
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const ball = avgpos(world, 4);
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let str = "";
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for(let yy=miny;yy<=maxy;yy++)
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{
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for(let xx=minx;xx<=maxx;xx++)
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{
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const vvv = ((yy*10000+xx) in world) ? world[yy*10000+xx][2] : 0;
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if (vvv === 0) str += ".";
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if (vvv === 1) str += "\u2588";
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if (vvv === 2) str += "+";
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if (vvv === 3) str += "-";
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if (vvv === 4) str += "o";
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}
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str += "\n";
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}
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const ddd = Math.sign(ball-paddle);
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await AdventOfCode.outputIntermed(str+"\n\n (("+score+"))")
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rnr.inputqueue.push(ddd);
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}
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}
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AdventOfCode.output(DAY, PROBLEM, score.toString());
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}
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function avgpos(world: { [_:number]:[number, number, number] }, search: number)
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{
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let xsum = 0;
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let count = 0;
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for(let v of Object.values(world))
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{
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if (v[2] !== search) continue;
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xsum += v[0];
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count++;
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}
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if (count === 0) throw (search + " not found");
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return Math.round(xsum/count);
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}
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class Interpreter
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{
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program: InfMem;
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inputqueue: number[];
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instructionpointer: number;
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output: number[];
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relative_base: number;
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is_halted: boolean = false;
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constructor(prog: number[], input: number[])
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{
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this.program = new InfMem(prog);
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this.inputqueue = input;
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this.instructionpointer = 0;
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this.output = [];
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this.relative_base = 0;
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}
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fullRun() : number[]
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{
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while(!this.is_halted)
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{
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const r = this.singleStep();
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if (r === StepResult.EXECUTED) continue;
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if (r === StepResult.HALTED) return this.output;
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if (r === StepResult.WAITING_FOR_IN) throw "not enough input";
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throw "unknown output of singleStep";
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}
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return this.output;
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}
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singleStep() : StepResult
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{
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const cmd = new Op(this.program.r(this.instructionpointer));
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if (cmd.opcode == OpCode.ADD)
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{
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const p0 = cmd.getParameter(this, 0);
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const p1 = cmd.getParameter(this, 1);
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const pv = p0 + p1;
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cmd.setParameter(this, 2, pv);
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this.incInstrPtr(cmd);
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return StepResult.EXECUTED;
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}
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else if (cmd.opcode == OpCode.MUL)
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{
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const p0 = cmd.getParameter(this, 0);
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const p1 = cmd.getParameter(this, 1);
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const pv = p0 * p1;
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cmd.setParameter(this, 2, pv);
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this.incInstrPtr(cmd);
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return StepResult.EXECUTED;
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}
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else if (cmd.opcode == OpCode.HALT)
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{
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this.is_halted = true;
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return StepResult.HALTED;
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}
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else if (cmd.opcode == OpCode.IN)
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{
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if (this.inputqueue.length == 0) return StepResult.WAITING_FOR_IN;
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const pv = this.inputqueue[0];
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cmd.setParameter(this, 0, pv);
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this.inputqueue = this.inputqueue.slice(1);
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this.incInstrPtr(cmd);
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return StepResult.EXECUTED;
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}
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else if (cmd.opcode == OpCode.OUT)
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{
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const p0 = cmd.getParameter(this, 0);
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this.output.push(p0);
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//AdventOfCode.outputConsole("# " + p0);
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this.incInstrPtr(cmd);
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return StepResult.EXECUTED;
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}
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else if (cmd.opcode == OpCode.TJMP)
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{
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const p0 = cmd.getParameter(this, 0);
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if (p0 != 0) this.instructionpointer = cmd.getParameter(this, 1);
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else this.incInstrPtr(cmd);
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return StepResult.EXECUTED;
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}
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else if (cmd.opcode == OpCode.FJMP)
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{
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const p0 = cmd.getParameter(this, 0);
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if (p0 == 0) this.instructionpointer = cmd.getParameter(this, 1);
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else this.incInstrPtr(cmd);
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return StepResult.EXECUTED;
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}
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else if (cmd.opcode == OpCode.LT)
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{
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const p0 = cmd.getParameter(this, 0);
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const p1 = cmd.getParameter(this, 1);
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const pv = p0 < p1 ? 1 : 0;
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cmd.setParameter(this, 2, pv);
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this.incInstrPtr(cmd);
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return StepResult.EXECUTED;
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}
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else if (cmd.opcode == OpCode.EQ)
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{
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const p0 = cmd.getParameter(this, 0);
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const p1 = cmd.getParameter(this, 1);
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const pv = p0 == p1 ? 1 : 0;
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cmd.setParameter(this, 2, pv);
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this.incInstrPtr(cmd);
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return StepResult.EXECUTED;
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}
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else if (cmd.opcode == OpCode.ARB)
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{
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const p0 = cmd.getParameter(this, 0);
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this.relative_base = this.relative_base+p0;
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this.incInstrPtr(cmd);
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return StepResult.EXECUTED;
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}
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else throw "Unknown Op: " + cmd.opcode + " @ " + this.instructionpointer;
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}
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private incInstrPtr(cmd: Op)
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{
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this.instructionpointer += 1 + cmd.parametercount;
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}
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}
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enum StepResult { EXECUTED, HALTED, WAITING_FOR_IN }
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enum OpCode
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{
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ADD = 1,
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MUL = 2,
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IN = 3,
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OUT = 4,
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TJMP = 5,
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FJMP = 6,
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LT = 7,
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EQ = 8,
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ARB = 9,
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HALT = 99,
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}
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enum ParamMode
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{
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POSITION_MODE = 0,
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IMMEDIATE_MODE = 1,
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RELATIVE_MODE = 2,
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}
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class Op
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{
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opcode: OpCode;
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modes: ParamMode[];
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name: string;
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parametercount: number;
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constructor(v: number)
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{
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this.opcode = v%100;
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v = Math.floor(v/100);
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this.modes = [];
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for(let i=0; i<4; i++)
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{
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this.modes.push(v%10);
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v = Math.floor(v/10);
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}
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if (this.opcode == OpCode.ADD) { this.name="ADD"; this.parametercount=3; }
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else if (this.opcode == OpCode.MUL) { this.name="MUL"; this.parametercount=3; }
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else if (this.opcode == OpCode.HALT) { this.name="HALT"; this.parametercount=0; }
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else if (this.opcode == OpCode.IN) { this.name="IN"; this.parametercount=1; }
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else if (this.opcode == OpCode.OUT) { this.name="OUT"; this.parametercount=1; }
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else if (this.opcode == OpCode.TJMP) { this.name="TJMP"; this.parametercount=2; }
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else if (this.opcode == OpCode.FJMP) { this.name="FJMP"; this.parametercount=2; }
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else if (this.opcode == OpCode.LT) { this.name="LT"; this.parametercount=3; }
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else if (this.opcode == OpCode.EQ) { this.name="EQ"; this.parametercount=3; }
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else if (this.opcode == OpCode.ARB) { this.name="ARB"; this.parametercount=1; }
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else throw "Unknown opcode: "+this.opcode;
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}
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getParameter(proc: Interpreter, index: number): number
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{
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const prog = proc.program;
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const ip = proc.instructionpointer;
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let p = prog.r(ip+1+index);
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if (this.modes[index] == ParamMode.POSITION_MODE) p = prog.r(p);
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else if (this.modes[index] == ParamMode.IMMEDIATE_MODE) p = p;
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else if (this.modes[index] == ParamMode.RELATIVE_MODE) p = prog.r(proc.relative_base+p);
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else throw "Unknown ParamMode: "+this.modes[index];
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return p;
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}
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setParameter(proc: Interpreter, index: number, value: number): void
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{
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const prog = proc.program;
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const ip = proc.instructionpointer;
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let p = prog.r(ip+1+index);
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if (this.modes[index] == ParamMode.POSITION_MODE) prog.w(p, value);
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else if (this.modes[index] == ParamMode.IMMEDIATE_MODE) throw "Immediate mode not allowed in write";
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else if (this.modes[index] == ParamMode.RELATIVE_MODE) prog.w(proc.relative_base+p, value);
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else throw "Unknown ParamMode: "+this.modes[index];
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}
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}
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class InfMem
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{
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private data: { [_:number]:number } = {};
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constructor(v: number[])
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{
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for(let i=0; i<v.length;i++) this.data[i]=v[i];
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}
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r(pos: number): number
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{
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if (!(pos in this.data)) this.data[pos] = 0;
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return this.data[pos];
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}
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w(pos: number, val: number): number
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{
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return this.data[pos] = val;
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}
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}
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}
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