Cleaner module format.

src/level.zig

@@ -1,25 +1,28 @@
+//! Level structure, grid containing tile data.
 const std = @import("std");
 const expect = std.testing.expect;
 
-pub const Level = struct {
-    width: u16,
-    height: u16,
-    buffer: []u16,
+const Self = @This();
 
-    pub fn init(allocator: *std.mem.Allocator, width: u16, height: u16) !Level {
-        var level = Level{
-            .width = width,
-            .height = height,
-            .buffer = undefined,
-        };
-        level.buffer = try allocator.alloc(u16, width * height);
-        return level;
-    }
+const cell_t = u16;
 
-    pub fn deinit(self: *Level, allocator: *std.mem.Allocator) void {
-        allocator.free(self.buffer);
-    }
-};
+width: u16,
+height: u16,
+buffer: []cell_t,
+
+pub fn init(allocator: *std.mem.Allocator, width: u16, height: u16) !Self {
+    var level = Self{
+        .width = width,
+        .height = height,
+        .buffer = undefined,
+    };
+    level.buffer = try allocator.alloc(cell_t, width * height);
+    return level;
+}
+
+pub fn deinit(self: *Self, allocator: *std.mem.Allocator) void {
+    allocator.free(self.buffer);
+}
 
 test "create level buffer" {
     // Create allocator.
@@ -31,9 +34,9 @@ test "create level buffer" {
     const allocator = &gpa.allocator;
 
     // Initialize level struct (twice 'cause why not?).
-    var level: Level = try Level.init(allocator, 64, 32);
+    var level: Self = try Self.init(allocator, 64, 32);
     level.deinit(allocator);
-    level = try Level.init(allocator, 64, 64);
+    level = try Self.init(allocator, 64, 64);
     defer level.deinit(allocator);
 
     level.buffer[128] = 32;

src/main.zig

@@ -1,6 +1,6 @@
 const std = @import("std");
 const assert = std.debug.assert;
-const Level = @import("level.zig").Level;
+const Level = @import("level.zig");
 const ray = @cImport({
     @cInclude("raylib.h");
 });

src/vec2.zig

@@ -2,55 +2,55 @@
 //! vectors with integer precision.
 const expect = @import("std").testing.expect;
 
-pub const Vec2 = struct {
-    x: i32,
-    y: i32,
+const Self = @This();
 
-    pub fn init(x: i32, y: i32) Vec2 {
-        return Vec2 {
-            .x = x,
-            .y = y,
-        };
-    }
+x: i32,
+y: i32,
 
-    pub fn add(self: Vec2, other: Vec2) Vec2 {
-        return Vec2 {
-            .x = self.x + other.x,
-            .y = self.y + other.y,
-        };
-    }
+pub fn init(x: i32, y: i32) Self {
+    return Self {
+        .x = x,
+        .y = y,
+    };
+}
 
-    pub fn sub(self: Vec2, other: Vec2) Vec2 {
-        return Vec2 {
-            .x = self.x - other.x,
-            .y = self.y - other.y,
-        };
-    }
-};
+pub fn add(self: Self, other: Self) Self {
+    return Self {
+        .x = self.x + other.x,
+        .y = self.y + other.y,
+    };
+}
 
-test "create Vec2 w/ positive values" {
-    const vector = Vec2.init(15984, 95715);
+pub fn sub(self: Self, other: Self) Self {
+    return Self {
+        .x = self.x - other.x,
+        .y = self.y - other.y,
+    };
+}
+
+test "create Self w/ positive values" {
+    const vector = Self.init(15984, 95715);
     expect(vector.x == 15984);
     expect(vector.y == 95715);
 }
 
-test "create Vec2 w/ negative values" {
-    const vector = Vec2.init(-51428, -56123);
+test "create Self w/ negative values" {
+    const vector = Self.init(-51428, -56123);
     expect(vector.x == -51428);
     expect(vector.y == -56123);
 }
 
-test "add two Vec2 using dot syntax" {
-    const vector_1 = Vec2.init(6712, 981);
-    const vector_2 = Vec2.init(-1823, 12);
+test "add two Self using dot syntax" {
+    const vector_1 = Self.init(6712, 981);
+    const vector_2 = Self.init(-1823, 12);
     const vector_sum = vector_1.add(vector_2);
     expect(vector_sum.x == 4889);
     expect(vector_sum.y == 993);
 }
 
-test "calculate difference between two Vec2 using dot syntax" {
-    const vector_1 = Vec2.init(6712, 981);
-    const vector_2 = Vec2.init(-1823, 12);
+test "calculate difference between two Self using dot syntax" {
+    const vector_1 = Self.init(6712, 981);
+    const vector_2 = Self.init(-1823, 12);
     const vector_diff = vector_1.sub(vector_2);
     expect(vector_diff.x == 8535);
     expect(vector_diff.y == 969);