328 lines
7.8 KiB
TypeScript
328 lines
7.8 KiB
TypeScript
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namespace AdventOfCode2019_11_1
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{
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const DAY = 11;
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const PROBLEM = 1;
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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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const rnr = new Interpreter(code, []);
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let map: { [_:number]:number } = {};
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let ctr = 0;
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let x=1000;
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let y=1000;
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let d=0; //0=UP|1=RIGHT|2=DOWN|3=LEFT
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for(;;)
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{
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ctr++;
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//let str = "";
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//for(let yy=990;yy<1010;yy++)
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//{
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// for(let xx=990;xx<1010;xx++)
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// {
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// if (x==xx && y== yy)
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// {
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// if (d==0)str += "^";
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// if (d==1)str += ">";
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// if (d==2)str += "v";
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// if (d==3)str += "<";
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// }
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// else if ((((yy*10000+xx) in map) ? map[yy*10000+xx] : 0) == 0)
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// {
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// str += ".";
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// }
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// else
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// {
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// str += "#";
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// }
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// }
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// str += "\n";
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//}
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//AdventOfCode.outputConsole(str);
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//if (ctr>20) return;
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const col = ((y*10000+x) in map) ? map[y*10000+x] : 0;
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for(;;)
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{
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let rr = rnr.singleStep();
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if (rnr.output.length == 2) break;
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if (rnr.is_halted) break;
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if (rr == StepResult.WAITING_FOR_IN) { rnr.inputqueue.push(col); }
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}
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if (rnr.is_halted) break;
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const newcol = rnr.output[0];
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const newdir = rnr.output[1];
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AdventOfCode.outputConsole(`[${newcol}|${((newcol==0)?'.':'#')}] | [${newdir}|${((newdir==0)?'L':'R')}]`);
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rnr.output = [];
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map[y*10000+x] = newcol;
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if (d==0 && newdir==0) { d=3;x--; }
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else if (d==0 && newdir==1) { d=1;x++; }
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else if (d==1 && newdir==0) { d=0;y++; }
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else if (d==1 && newdir==1) { d=2;y--; }
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else if (d==2 && newdir==0) { d=1;x++; }
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else if (d==2 && newdir==1) { d=3;x--; }
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else if (d==3 && newdir==0) { d=2;y--; }
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else if (d==3 && newdir==1) { d=0;y++; }
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}
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AdventOfCode.output(DAY, PROBLEM, Object.keys(map).length.toString());
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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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