Set up raylib

c/2019/5/sunny_with_a_chance_of_asteroids.c

@@ -9,10 +9,17 @@ int main() {
   ic_load_rom_from_input();
 
   IC *c = ic_new_computer();
-  ic_run(c);
+  c->input = 1;
+  //ic_run(c);
 
-  printf("Part 1: %d\n", c->output_buffer[c->output_buffer_count - 1]);
+  //printf("Part 1: %d\n", c->output_buffer[c->output_buffer_count - 1]);
-  // printf("Part 2: %d\n", noun * 100 + verb);
+
+  ic_reset(c);
+  ic_print(c);
+  c->input = 6;
+  ic_run(c);
+  ic_print(c);
+  printf("Part 2: %d\n", c->output_buffer[0]);
   
   aoc_free();
   return 0;

c/2024/17/chronospatial_computer.c

@@ -0,0 +1,145 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdbool.h>
+#include <limits.h>
+
+#include "../../lib/aoc.h"
+
+#define PROGRAM_LENGTH 16
+
+typedef struct Computer {
+  long a;
+  long b;
+  long c;
+  long program[PROGRAM_LENGTH];
+  int pc;
+  long output[1000];
+  int output_count;
+} Computer;
+
+long combo(Computer *c, int operand) {
+  switch (operand) {
+  case 0:
+  case 1:
+  case 2:
+  case 3:
+    return operand;
+  case 4:
+    return c->a;
+  case 5:
+    return c->b;
+  case 6:
+    return c->c;
+  default:
+    printf("Invalid operand %d detected\n", operand);
+    exit(1);
+  }
+}
+
+void step(Computer *c) {
+  int instruction = c->program[c->pc++];
+  int operand = c->program[c->pc++];
+  // printf("%d|%d\n", instruction, operand);
+  // printf("a: %d, b: %d, c: %d, pc: %d\n", c->a, c->b, c->c, c->pc);
+  switch(instruction) {
+  case 0:
+    // printf("0: a = %d / %d = %d\n", c->a, 1<<combo(c, operand), c->a / (1<<combo(c, operand)));
+    c->a = c->a / (1 << combo(c, operand));
+    break;
+  case 1:
+    // printf("1: b = %d ^ %d = %d\n", c->b, operand, c->b ^ operand);
+    c->b = operand ^ c->b;
+    break;
+  case 2:
+    // printf("2: b = %d % 8 = %d\n", combo(c, operand), combo(c, operand) % 8);
+    c->b = combo(c, operand) % 8;
+    break;
+  case 3:
+    // printf("3: if %d then jump to %d\n", c->a, operand);
+    if (c->a) c->pc = operand;
+    break;
+  case 4:
+    // printf("4: b = %d ^ %d = %d\n", c->b, c->c, c->b ^ c->c);
+    c->b = c->b ^ c->c;
+    break;
+  case 5:
+    // printf("5: print %d\n", combo(c, operand) % 8);
+    c->output[c->output_count++] = combo(c, operand) % 8;
+    break;
+  case 6:
+    // printf("6: b = %d / %d = %d\n", c->b, 1<<combo(c, operand), c->b / (1<<combo(c, operand)));
+    c->b = c->a / (1 << combo(c, operand));
+    break;
+  case 7:
+    // printf("7: c = %d / %d = %d\n", c->a, 1<<combo(c, operand), c->a / (1<<combo(c, operand)));
+    c->c = c->a / (1 << combo(c, operand));
+    break;
+  }
+}
+
+bool quine(Computer *c, long a) {
+  if (a % 100000000 == 0) printf("%ld\n", a);
+  c->a = a;
+  c->b = 0;
+  c->c = 0;
+  c->pc = 0;
+  c->output_count = 0;
+  while (c->pc < PROGRAM_LENGTH) {
+    step(c);
+    if (c->output_count == 0) continue;
+    if (c->output[c->output_count - 1] != c->program[c->output_count - 1]) return false;
+  }
+  if (c->output_count != PROGRAM_LENGTH) return false;
+  for (int i = 0; i < c->output_count; c++) {
+    if (c->program[i] != c->output[i]) return false;
+  }
+  return true;
+}
+
+int main() {
+  printf("%s\n", aoc_read_input());
+  Computer c;
+  c.pc = 0;
+
+  sscanf(aoc_read_line(), "Register A: %d", &(c.a));
+  sscanf(aoc_read_line(), "Register B: %d", &(c.b));
+  sscanf(aoc_read_line(), "Register C: %d", &(c.c));
+  aoc_read_line();
+  strtok(aoc_read_line(), " ");
+  for (char *token = strtok(NULL, ","); token != NULL; token = strtok(NULL, ",")) {
+    c.program[c.pc++] = atoi(token);
+  }
+  c.pc = 0;
+  c.output_count = 0;
+
+  while (c.pc < PROGRAM_LENGTH) {
+    printf("a: %d, b: %d, c: %d, pc: %d\n", c.a, c.b, c.c, c.pc);
+    step(&c);
+    // printf("\n");
+  }
+
+  printf("Part 1: %d", c.output[0]);
+  for (int i = 1; i < c.output_count; i++) {
+    printf(",%d", c.output[i]);
+  }
+  printf("\n");
+
+  //long a = 100000000000000;
+  // long a = 8 ** 15;
+  // long a = 2 ** 45;
+  long a = 1l << 45l;
+  for (; a < (1l << 48l); a++) {
+    quine(&c, a);
+    /*printf("%ld: ", a);
+    for (int i = 0; i < c.output_count; i++) {
+      printf("%ld,", c.output[i]);
+    }
+    printf("\n");*/
+  }
+  // while (!quine(&c, a)) a++;
+  printf("Part 2: %ld", a);
+
+  aoc_free();
+  exit(0);
+}

c/lib/intcode.h

@@ -15,6 +15,7 @@ typedef struct IC {
   int *data;
   int program_counter;
   bool halted;
+  int input;
   int output_buffer[OUTPUT_BUFFER_LENGTH];
   int output_buffer_count;
 } IC;
@@ -35,6 +36,10 @@ void ic_write(IC *c, int value) {
   ic_poke(c, ic_peek(c, c->program_counter++), value);
 }
 
+void ic_jump(IC *c, int address) {
+  c->program_counter = address;
+}
+
 void ic_halt(IC *c) {
   c->halted = true;
 }
@@ -68,7 +73,7 @@ void ic_instruction_multiply(IC *c, int modes) {
 }
 
 void ic_instruction_input(IC *c, int _modes) {
-  ic_write(c, 1);
+  ic_write(c, c->input);
 }
 
 void ic_instruction_output(IC *c, int modes) {
@@ -84,16 +89,92 @@ void ic_instruction_output(IC *c, int modes) {
   c->output_buffer[c->output_buffer_count++] = to_output;
 }
 
+void ic_instruction_jump_if_true(IC *c, int modes) {
+  int predicate_mode = modes % 10;
+  modes /= 10;
+  int predicate = ic_read(c);
+  if (predicate_mode == POSITION_MODE) predicate = ic_peek(c, predicate);
+  printf("Predicate: %d\n", predicate);
+  if (predicate == 0) {
+    ic_read(c);
+    return;
+  }
+
+  int pointer_mode = 0;//modes % 10;
+  modes /= 10;
+  int pointer = ic_read(c);
+  if (pointer_mode == POSITION_MODE) pointer = ic_peek(c, pointer);
+  ic_jump(c, pointer);
+}
+
+void ic_instruction_jump_if_false(IC *c, int modes) {
+  int predicate_mode = modes % 10;
+  modes /= 10;
+  int predicate = ic_read(c);
+  if (predicate_mode == POSITION_MODE) predicate = ic_peek(c, predicate);
+  if (predicate != 0) {
+    ic_read(c);
+    return;
+  }
+
+  int pointer_mode = 0;//modes % 10;
+  modes /= 10;
+  int pointer = ic_read(c);
+  if (pointer_mode == POSITION_MODE) pointer = ic_peek(c, pointer);
+  ic_jump(c, pointer);
+}
+
+void ic_instruction_less_than(IC *c, int modes) {
+  int x_mode = modes % 10;
+  modes /= 10;
+  int x = ic_read(c);
+  if (x_mode == POSITION_MODE) x = ic_peek(c, x);
+
+  int y_mode = modes % 10;
+  modes /= 10;
+  int y = ic_read(c);
+  if (y_mode == POSITION_MODE) y = ic_peek(c, y);
+
+  int output_mode = 1;//modes % 10;
+  modes /= 10;
+  int output = ic_read(c);
+  if (output_mode == POSITION_MODE) output = ic_peek(c, output);
+
+  if (x < y) ic_poke(c, output, 1);
+  else ic_poke(c, output, 0);
+}
+
+void ic_instruction_equals(IC *c, int modes) {
+  int x_mode = modes % 10;
+  modes /= 10;
+  int x = ic_read(c);
+  if (x_mode == POSITION_MODE) x = ic_peek(c, x);
+
+  int y_mode = modes % 10;
+  modes /= 10;
+  int y = ic_read(c);
+  if (y_mode == POSITION_MODE) y = ic_peek(c, y);
+
+  int output_mode = 1;//modes % 10;
+  modes /= 10;
+  int output = ic_read(c);
+  if (output_mode == POSITION_MODE) output = ic_peek(c, output);
+
+  if (x == y) ic_poke(c, output, 1);
+  else ic_poke(c, output, 0);
+}
+
 void ic_instruction_halt(IC *c, int _modes) {
   ic_halt(c);
 }
 
 int ic_execute_instruction(IC *c) {
+  //ic_print(c);
   int instruction = ic_read(c);
   int opcode = instruction % 100;
   int modes = instruction / 100;
-  // printf("Running %d: opcode %d with modes %d\n", instruction, opcode, modes);
+  printf("Running %d: opcode %d with modes %d\n", instruction, opcode, modes);
-  // printf("PC: %d\n", c->program_counter - 1);
+  printf("PC: %d\n", c->program_counter - 1);
   switch(opcode) {
   case 1:
     ic_instruction_add(c, modes);
@@ -107,6 +188,18 @@ int ic_execute_instruction(IC *c) {
   case 4:
     ic_instruction_output(c, modes);
     break;
+  case 5:
+    ic_instruction_jump_if_true(c, modes);
+    break;
+  case 6:
+    ic_instruction_jump_if_false(c, modes);
+    break;
+  case 7:
+    ic_instruction_less_than(c, modes);
+    break;
+  case 8:
+    ic_instruction_equals(c, modes);
+    break;
   case 99:
     ic_instruction_halt(c, modes);
     break;

c_visualization/.gitignore

@@ -0,0 +1,3 @@
+lib/*.a
+
+*/*/problem

c_visualization/2015/1/not_quite_lisp.c

@@ -0,0 +1,70 @@
+/*******************************************************************************************
+*
+*   raylib [core] example - Basic window
+*
+*   Welcome to raylib!
+*
+*   To test examples, just press F6 and execute 'raylib_compile_execute' script
+*   Note that compiled executable is placed in the same folder as .c file
+*
+*   To test the examples on Web, press F6 and execute 'raylib_compile_execute_web' script
+*   Web version of the program is generated in the same folder as .c file
+*
+*   You can find all basic examples on C:\raylib\raylib\examples folder or
+*   raylib official webpage: www.raylib.com
+*
+*   Enjoy using raylib. :)
+*
+*   Example originally created with raylib 1.0, last time updated with raylib 1.0
+*
+*   Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
+*   BSD-like license that allows static linking with closed source software
+*
+*   Copyright (c) 2013-2024 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include <raylib.h>
+
+//------------------------------------------------------------------------------------
+// Program main entry point
+//------------------------------------------------------------------------------------
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [core] example - basic window");
+
+    SetTargetFPS(60);               // Set our game to run at 60 frames-per-second
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        // TODO: Update your variables here
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            DrawText("Congrats! You created your first window!", 190, 200, 20, LIGHTGRAY);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    CloseWindow();        // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}

c_visualization/bin/run

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+
+year=$1
+day=$2
+
+mkdir -p $year/$day
+source_file=$(ls $year/$day/*.c)
+
+if [[ -z $source_file ]] ; then
+    echo "No c source file found in $year/$day"
+    exit 1
+fi
+
+gcc -Wall -o $year/$day/problem $source_file -lraylib -lGL -lm -lpthread -ldl -lrt -lX11 &&
+time (cat ../data/$year/$day/input.txt | ./$year/$day/problem)