[2024] Added Day 16: Reindeer Maze

Author: ACSimon33

2024/16/reindeer_maze/benchmarks/puzzle_benchmarks.zig

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+const std = @import("std");
+const zbench = @import("zbench");
+const reindeer_maze = @import("reindeer_maze");
+
+const puzzle_input = @embedFile("puzzle_input");
+
+// Benchmark of part 1
+fn task_1(_: std.mem.Allocator) void {
+    _ = reindeer_maze.lowest_maze_score(puzzle_input) catch {};
+}
+
+// Benchmark of part 2
+fn task_2(_: std.mem.Allocator) void {
+    _ = reindeer_maze.amount_of_viewing_positions(puzzle_input) catch {};
+}
+
+pub fn main() !void {
+    const stdout = std.io.getStdOut().writer();
+    var bench = zbench.Benchmark.init(std.heap.page_allocator, .{});
+    defer bench.deinit();
+
+    try bench.add("Day 16 - Task 1", task_1, .{});
+    try bench.add("Day 16 - Task 2", task_2, .{});
+
+    try stdout.writeAll("\n");
+    try bench.run(stdout);
+}

2024/16/reindeer_maze/build.zig

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+const std = @import("std");
+
+pub fn build(b: *std.Build) void {
+    const target = b.standardTargetOptions(.{});
+    const optimize = b.standardOptimizeOption(.{});
+
+    // -------------------------- Solution module --------------------------- \\
+    const reindeer_maze = b.addModule("reindeer_maze", .{
+        .root_source_file = b.path("src/reindeer_maze.zig"),
+    });
+
+    // -------------------------- Main executable --------------------------- \\
+    const reindeer_maze_exe = b.addExecutable(.{
+        .name = "reindeer_maze",
+        .root_source_file = b.path("src/main.zig"),
+        .target = target,
+        .optimize = optimize,
+    });
+
+    const yazap = b.dependency("yazap", .{});
+    reindeer_maze_exe.root_module.addImport("yazap", yazap.module("yazap"));
+    reindeer_maze_exe.root_module.addImport("reindeer_maze", reindeer_maze);
+    b.installArtifact(reindeer_maze_exe);
+
+    const run_cmd = b.addRunArtifact(reindeer_maze_exe);
+    run_cmd.step.dependOn(b.getInstallStep());
+    if (b.args) |args| {
+        run_cmd.addArgs(args);
+    }
+
+    const run_step = b.step("run", "Run Reindeer Maze (day 16) app");
+    run_step.dependOn(&run_cmd.step);
+
+    // --------------------------- Example tests ---------------------------- \\
+    const reindeer_maze_tests = b.addTest(.{
+        .name = "reindeer_maze_tests",
+        .root_source_file = b.path("tests/example_tests.zig"),
+        .target = target,
+        .optimize = optimize,
+    });
+
+    reindeer_maze_tests.root_module.addImport("reindeer_maze", reindeer_maze);
+    inline for (1..3) |i| {
+        const num_str = std.fmt.comptimePrint("{!}", .{i});
+        reindeer_maze_tests.root_module.addAnonymousImport(
+            "example_input_" ++ num_str,
+            .{
+                .root_source_file = b.path("input/example_input_" ++ num_str ++ ".txt"),
+            },
+        );
+    }
+    b.installArtifact(reindeer_maze_tests);
+
+    const test_step = b.step("test", "Run Reindeer Maze (day 16) tests");
+    test_step.dependOn(&b.addRunArtifact(reindeer_maze_tests).step);
+
+    // ------------------------- Puzzle benchmarks -------------------------- \\
+    const reindeer_maze_benchmarks = b.addExecutable(.{
+        .name = "reindeer_maze_benchmarks",
+        .root_source_file = b.path("benchmarks/puzzle_benchmarks.zig"),
+        .target = target,
+        .optimize = optimize,
+    });
+
+    const zbench = b.dependency("zbench", .{
+        .target = target,
+        .optimize = optimize,
+    });
+    reindeer_maze_benchmarks.root_module.addImport("zbench", zbench.module("zbench"));
+    reindeer_maze_benchmarks.root_module.addImport("reindeer_maze", reindeer_maze);
+    reindeer_maze_benchmarks.root_module.addAnonymousImport("puzzle_input", .{
+        .root_source_file = b.path("input/puzzle_input.txt"),
+    });
+    b.installArtifact(reindeer_maze_benchmarks);
+
+    const benchmark_step = b.step("benchmark", "Run Reindeer Maze (day 16) benchmarks");
+    benchmark_step.dependOn(&b.addRunArtifact(reindeer_maze_benchmarks).step);
+}

2024/16/reindeer_maze/build.zig.zon

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+.{
+    .name = "reindeer_maze",
+    .version = "0.1.0",
+    .minimum_zig_version = "0.13.0",
+    .dependencies = .{
+        .yazap = .{
+            .url = "git+https://github.com/prajwalch/yazap#c2e3122d5dd6192513ba590f229dbc535110efb8",
+            .hash = "122054439ec36ac10987c87ae69f3b041b40b2e451af3fe3ef1fc578b3bad756a800",
+        },
+        .zbench = .{
+            .url = "git+https://github.com/hendriknielaender/zBench#fb3ecae5d035091fd2392a2ec21970c06fc375fa",
+            .hash = "122095b73930ff5d627429295c669905d85bb9b54394ddc185ad2d61295cc65819e5",
+        },
+    },
+    .paths = .{
+        "build.zig",
+        "build.zig.zon",
+        "src",
+        "input",
+        "tests",
+        "benchmarks",
+    },
+}

2024/16/reindeer_maze/input/example_input_1.txt

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+###############
+#.......#....E#
+#.#.###.#.###.#
+#.....#.#...#.#
+#.###.#####.#.#
+#.#.#.......#.#
+#.#.#####.###.#
+#...........#.#
+###.#.#####.#.#
+#...#.....#.#.#
+#.#.#.###.#.#.#
+#.....#...#.#.#
+#.###.#.#.#.#.#
+#S..#.....#...#
+###############

2024/16/reindeer_maze/input/example_input_2.txt

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+#################
+#...#...#...#..E#
+#.#.#.#.#.#.#.#.#
+#.#.#.#...#...#.#
+#.#.#.#.###.#.#.#
+#...#.#.#.....#.#
+#.#.#.#.#.#####.#
+#.#...#.#.#.....#
+#.#.#####.#.###.#
+#.#.#.......#...#
+#.#.###.#####.###
+#.#.#...#.....#.#
+#.#.#.#####.###.#
+#.#.#.........#.#
+#.#.#.#########.#
+#S#.............#
+#################