From 7d608435986846bfcec4292b0f9bf84351f9bbce Mon Sep 17 00:00:00 2001
From: Vicente Ferrari Smith <vicenteferrarismith@gmail.com>
Date: Sun, 21 Dec 2025 23:02:59 +0100
Subject: [PATCH] added client server shared

---
 .zed/debug.json         |  27 +++++++++++
 .zed/tasks.json         | 103 ++++++++++++++++++++++++++++++++++++++++
 src/client/main.zig     |  77 ++++++++++++++++++++++++++++++
 src/server/main.zig     |  83 ++++++++++++++++++++++++++++++++
 src/shared/chunk.zig    |  99 ++++++++++++++++++++++++++++++++++++++
 src/shared/entity.zig   |  36 ++++++++++++++
 src/shared/misc.zig     |   7 +++
 src/shared/protocol.zig |  15 ++++++
 src/shared/shared.zig   |   4 ++
 zzz.rad_proj            |  31 ++++++++++++
 10 files changed, 482 insertions(+)
 create mode 100644 .zed/debug.json
 create mode 100644 .zed/tasks.json
 create mode 100644 src/client/main.zig
 create mode 100644 src/server/main.zig
 create mode 100644 src/shared/chunk.zig
 create mode 100644 src/shared/entity.zig
 create mode 100644 src/shared/misc.zig
 create mode 100644 src/shared/protocol.zig
 create mode 100644 src/shared/shared.zig
 create mode 100644 zzz.rad_proj

diff --git a/.zed/debug.json b/.zed/debug.json
new file mode 100644
index 0000000..666160e
--- /dev/null
+++ b/.zed/debug.json
@@ -0,0 +1,27 @@
+// Project-local debug tasks
+//
+// For more documentation on how to configure debug tasks,
+// see: https://zed.dev/docs/debugger
+[
+  {
+    "adapter": "CodeLLDB",
+    "label": "zig build run",
+    "request": "launch",
+    "build": {
+      "label": "zig build",
+      "command": "zig",
+      "args": ["build"],
+      "env": {},
+      "cwd": null,
+      "use_new_terminal": false,
+      "allow_concurrent_runs": false,
+      "reveal": "always",
+      "reveal_target": "dock",
+      "hide": "never",
+      //"tags": [],
+      "shell": "system",
+      "show_summary": false,
+      "show_command": false,
+    },
+  },
+]
diff --git a/.zed/tasks.json b/.zed/tasks.json
new file mode 100644
index 0000000..b961529
--- /dev/null
+++ b/.zed/tasks.json
@@ -0,0 +1,103 @@
+// Project tasks configuration. See https://zed.dev/docs/tasks for documentation.
+//
+// Example:
+[
+  {
+    "label": "Example task",
+    "command": "for i in {1..5}; do echo \"Hello $i/5\"; sleep 1; done",
+    //"args": [],
+    // Env overrides for the command, will be appended to the terminal's environment from the settings.
+    "env": { "foo": "bar" },
+    // Current working directory to spawn the command into, defaults to current project root.
+    //"cwd": "/path/to/working/directory",
+    // Whether to use a new terminal tab or reuse the existing one to spawn the process, defaults to `false`.
+    "use_new_terminal": false,
+    // Whether to allow multiple instances of the same task to be run, or rather wait for the existing ones to finish, defaults to `false`.
+    "allow_concurrent_runs": false,
+    // What to do with the terminal pane and tab, after the command was started:
+    // * `always` — always show the task's pane, and focus the corresponding tab in it (default)
+    // * `no_focus` — always show the task's pane, add the task's tab in it, but don't focus it
+    // * `never` — do not alter focus, but still add/reuse the task's tab in its pane
+    "reveal": "always",
+    // Where to place the task's terminal item after starting the task:
+    // * `dock` — in the terminal dock, "regular" terminal items' place (default)
+    // * `center` — in the central pane group, "main" editor area
+    "reveal_target": "dock",
+    // What to do with the terminal pane and tab, after the command had finished:
+    // * `never` — Do nothing when the command finishes (default)
+    // * `always` — always hide the terminal tab, hide the pane also if it was the last tab in it
+    // * `on_success` — hide the terminal tab on task success only, otherwise behaves similar to `always`
+    "hide": "never",
+    // Which shell to use when running a task inside the terminal.
+    // May take 3 values:
+    // 1. (default) Use the system's default terminal configuration in /etc/passwd
+    //      "shell": "system"
+    // 2. A program:
+    //      "shell": {
+    //        "program": "sh"
+    //      }
+    // 3. A program with arguments:
+    //     "shell": {
+    //         "with_arguments": {
+    //           "program": "/bin/bash",
+    //           "args": ["--login"]
+    //         }
+    //     }
+    "shell": "system",
+    // Whether to show the task line in the output of the spawned task, defaults to `true`.
+    "show_summary": true,
+    // Whether to show the command line in the output of the spawned task, defaults to `true`.
+    "show_command": true,
+    // Represents the tags for inline runnable indicators, or spawning multiple tasks at once.
+    // "tags": []
+  },
+  {
+    "label": "zig build",
+    "command": "zig build",
+    //"args": [],
+    // Env overrides for the command, will be appended to the terminal's environment from the settings.
+    //"env": { "foo": "bar" },
+    // Current working directory to spawn the command into, defaults to current project root.
+    //"cwd": "/path/to/working/directory",
+    // Whether to use a new terminal tab or reuse the existing one to spawn the process, defaults to `false`.
+    "use_new_terminal": false,
+    // Whether to allow multiple instances of the same task to be run, or rather wait for the existing ones to finish, defaults to `false`.
+    "allow_concurrent_runs": false,
+    // What to do with the terminal pane and tab, after the command was started:
+    // * `always` — always show the task's pane, and focus the corresponding tab in it (default)
+    // * `no_focus` — always show the task's pane, add the task's tab in it, but don't focus it
+    // * `never` — do not alter focus, but still add/reuse the task's tab in its pane
+    "reveal": "always",
+    // Where to place the task's terminal item after starting the task:
+    // * `dock` — in the terminal dock, "regular" terminal items' place (default)
+    // * `center` — in the central pane group, "main" editor area
+    "reveal_target": "dock",
+    // What to do with the terminal pane and tab, after the command had finished:
+    // * `never` — Do nothing when the command finishes (default)
+    // * `always` — always hide the terminal tab, hide the pane also if it was the last tab in it
+    // * `on_success` — hide the terminal tab on task success only, otherwise behaves similar to `always`
+    "hide": "never",
+    // Which shell to use when running a task inside the terminal.
+    // May take 3 values:
+    // 1. (default) Use the system's default terminal configuration in /etc/passwd
+    //      "shell": "system"
+    // 2. A program:
+    //      "shell": {
+    //        "program": "sh"
+    //      }
+    // 3. A program with arguments:
+    //     "shell": {
+    //         "with_arguments": {
+    //           "program": "/bin/bash",
+    //           "args": ["--login"]
+    //         }
+    //     }
+    "shell": "system",
+    // Whether to show the task line in the output of the spawned task, defaults to `true`.
+    "show_summary": true,
+    // Whether to show the command line in the output of the spawned task, defaults to `true`.
+    "show_command": true,
+    // Represents the tags for inline runnable indicators, or spawning multiple tasks at once.
+    // "tags": []
+  },
+]
diff --git a/src/client/main.zig b/src/client/main.zig
new file mode 100644
index 0000000..bacdae8
--- /dev/null
+++ b/src/client/main.zig
@@ -0,0 +1,77 @@
+const std = @import("std");
+const zm = @import("zmath");
+const shared = @import("shared");
+
+var stdout: *std.io.Writer = undefined;
+
+pub fn main() !void {
+    std.log.info("Helllo Client!", .{});
+    var dbg_allocator = std.heap.DebugAllocator(.{}).init;
+    defer _ = dbg_allocator.deinit();
+    const allocator = dbg_allocator.allocator();
+
+    var stdout_buffer: [1024]u8 = undefined;
+    var stdout_writer = std.fs.File.stdout().writer(&stdout_buffer);
+    stdout = &stdout_writer.interface;
+
+    std.log.info("{s}", .{@typeName(shared.chunk.Chunk)});
+
+    try stdout.flush();
+
+    const address = try std.net.Address.parseIp4("127.0.0.1", shared.protocol.SERVER_PORT);
+
+    var connection = try std.net.tcpConnectToAddress(address);
+
+    std.log.info("Connected to server", .{});
+
+    var the_chunk = try shared.chunk.initChunk(allocator);
+    defer shared.chunk.deinitChunk(&the_chunk, allocator);
+
+    shared.chunk.spawn(&the_chunk, shared.entity.Player, allocator, .{
+        .pos = zm.f32x4(1, 1, 0, 0),
+        .hp = 10,
+    });
+
+    shared.chunk.spawn(&the_chunk, shared.entity.Monster, allocator, .{
+        .pos = zm.f32x4(1, 1, 0, 0),
+        .hp = 20,
+    });
+
+    shared.chunk.spawn(&the_chunk, shared.entity.Projectile, allocator, .{
+        .pos = zm.f32x4(0, 0, 0, 0),
+        .vel = zm.f32x4(0.2, 0, 0, 0),
+    });
+
+    shared.chunk.updateChunk(&the_chunk);
+
+    var send_buf: [1024]u8 = undefined;
+    var writer = connection.writer(&send_buf);
+
+    try shared.protocol.sendHello(&writer.interface, .{ .msg = "Hello from client" });
+
+    var recv_buf: [1024]u8 = undefined;
+    var reader = connection.reader(&recv_buf);
+    const line = try shared.protocol.recvLine(reader.interface());
+    std.log.info("{s}", .{line});
+}
+
+//fn handle_connection(connection: std.net.Server.Connection) !void {}
+
+// test "simple test" {
+//     const gpa = std.testing.allocator;
+//     var list: std.ArrayList(i32) = .empty;
+//     defer list.deinit(gpa); // Try commenting this out and see if zig detects the memory leak!
+//     try list.append(gpa, 42);
+//     try std.testing.expectEqual(@as(i32, 42), list.pop());
+// }
+
+// test "fuzz example" {
+//     const Context = struct {
+//         fn testOne(context: @This(), input: []const u8) anyerror!void {
+//             _ = context;
+//             // Try passing `--fuzz` to `zig build test` and see if it manages to fail this test case!
+//             try std.testing.expect(!std.mem.eql(u8, "canyoufindme", input));
+//         }
+//     };
+//     try std.testing.fuzz(Context{}, Context.testOne, .{});
+// }
diff --git a/src/server/main.zig b/src/server/main.zig
new file mode 100644
index 0000000..387f1f0
--- /dev/null
+++ b/src/server/main.zig
@@ -0,0 +1,83 @@
+const std = @import("std");
+const zm = @import("zmath");
+const shared = @import("shared");
+
+var stdout: *std.io.Writer = undefined;
+
+pub fn main() !void {
+    std.log.info("Helllo Server!", .{});
+    var dbg_allocator = std.heap.DebugAllocator(.{}).init;
+    defer _ = dbg_allocator.deinit();
+    const allocator = dbg_allocator.allocator();
+
+    var stdout_buffer: [1024]u8 = undefined;
+    var stdout_writer = std.fs.File.stdout().writer(&stdout_buffer);
+    stdout = &stdout_writer.interface;
+
+    std.log.info("{s}", .{@typeName(shared.chunk.Chunk)});
+
+    try stdout.flush();
+
+    const address = try std.net.Address.parseIp4("127.0.0.1", shared.protocol.SERVER_PORT);
+    var server = try address.listen(.{});
+
+    defer server.deinit();
+
+    var the_chunk = try shared.chunk.initChunk(allocator);
+    defer shared.chunk.deinitChunk(&the_chunk, allocator);
+
+    shared.chunk.spawn(&the_chunk, shared.entity.Player, allocator, .{
+        .pos = zm.f32x4(1, 1, 0, 0),
+        .hp = 10,
+    });
+
+    shared.chunk.spawn(&the_chunk, shared.entity.Monster, allocator, .{
+        .pos = zm.f32x4(1, 1, 0, 0),
+        .hp = 20,
+    });
+
+    shared.chunk.spawn(&the_chunk, shared.entity.Projectile, allocator, .{
+        .pos = zm.f32x4(0, 0, 0, 0),
+        .vel = zm.f32x4(0.2, 0, 0, 0),
+    });
+
+    shared.chunk.updateChunk(&the_chunk);
+
+    while (true) {
+        const connection = try server.accept();
+        defer connection.stream.close();
+
+        std.log.info("Client connected", .{});
+
+        var recv_buffer: [4096]u8 = undefined;
+        var send_buffer: [4096]u8 = undefined;
+        var reader = connection.stream.reader(&recv_buffer);
+        var writer = connection.stream.writer(&send_buffer);
+
+        const line = try shared.protocol.recvLine(reader.interface());
+        std.log.info("Received: {s}", .{line});
+
+        try shared.protocol.sendHello(&writer.interface, .{ .msg = "Hello from server!" });
+    }
+}
+
+//fn handle_connection(connection: std.net.Server.Connection) !void {}
+
+// test "simple test" {
+//     const gpa = std.testing.allocator;
+//     var list: std.ArrayList(i32) = .empty;
+//     defer list.deinit(gpa); // Try commenting this out and see if zig detects the memory leak!
+//     try list.append(gpa, 42);
+//     try std.testing.expectEqual(@as(i32, 42), list.pop());
+// }
+
+// test "fuzz example" {
+//     const Context = struct {
+//         fn testOne(context: @This(), input: []const u8) anyerror!void {
+//             _ = context;
+//             // Try passing `--fuzz` to `zig build test` and see if it manages to fail this test case!
+//             try std.testing.expect(!std.mem.eql(u8, "canyoufindme", input));
+//         }
+//     };
+//     try std.testing.fuzz(Context{}, Context.testOne, .{});
+// }
diff --git a/src/shared/chunk.zig b/src/shared/chunk.zig
new file mode 100644
index 0000000..c7f98dc
--- /dev/null
+++ b/src/shared/chunk.zig
@@ -0,0 +1,99 @@
+const std = @import("std");
+const entity = @import("entity.zig");
+const misc = @import("misc.zig");
+
+fn Storage(comptime T: type) type {
+    return struct {
+        items: std.ArrayList(T),
+
+        pub fn init(allocator: std.mem.Allocator) !@This() {
+            return .{
+                .items = try std.ArrayList(T).initCapacity(allocator, 32),
+            };
+        }
+
+        pub fn deinit(self: *@This(), allocator: std.mem.Allocator) void {
+            self.items.deinit(allocator);
+        }
+
+        pub fn update(self: *@This()) void {
+            for (self.items.items, 0..) |*item, i| {
+                _ = i;
+                if (@hasDecl(T, "update"))
+                    item.update();
+            }
+        }
+    };
+}
+
+pub fn initChunk(allocator: std.mem.Allocator) !Chunk {
+    var chunk: Chunk = undefined;
+
+    switch (@typeInfo(Chunk)) {
+        .@"struct" => |s| {
+            inline for (s.fields) |field| {
+                const StorageT = field.type;
+                @field(chunk, field.name) = try StorageT.init(allocator);
+            }
+        },
+        else => unreachable,
+    }
+
+    return chunk;
+}
+
+pub fn deinitChunk(chunk: *Chunk, allocator: std.mem.Allocator) void {
+    switch (@typeInfo(Chunk)) {
+        .@"struct" => |s| {
+            inline for (s.fields) |field| {
+                @field(chunk, field.name).deinit(allocator);
+            }
+        },
+        else => unreachable,
+    }
+}
+
+fn _Chunk(comptime Types: anytype) type {
+    const FieldCount = Types.len;
+
+    var fields: [FieldCount]std.builtin.Type.StructField = undefined;
+
+    inline for (Types, 0..) |T, i| {
+        fields[i] = .{
+            .name = misc.short_type_name(T),
+            .type = Storage(T),
+            .default_value_ptr = null,
+            .is_comptime = false,
+            .alignment = @alignOf(Storage(T)),
+        };
+    }
+
+    return @Type(.{
+        .@"struct" = .{
+            .layout = .auto,
+            .fields = &fields,
+            .decls = &.{},
+            .is_tuple = false,
+        },
+    });
+}
+
+pub const Chunk = _Chunk(entity.EntityKinds);
+
+pub fn updateChunk(chunk: *Chunk) void {
+    const info = @typeInfo(Chunk);
+
+    switch (info) {
+        .@"struct" => |s| {
+            inline for (s.fields) |field| {
+                @field(chunk, field.name).update();
+            }
+        },
+        else => unreachable,
+    }
+}
+
+pub fn spawn(chunk: anytype, comptime T: type, allocator: std.mem.Allocator, value: T) void {
+    std.log.info("hello!? {s}", .{@typeName(T)});
+    @field(chunk, misc.short_type_name(T)).items.append(allocator, value) catch unreachable;
+}
diff --git a/src/shared/entity.zig b/src/shared/entity.zig
new file mode 100644
index 0000000..6dced51
--- /dev/null
+++ b/src/shared/entity.zig
@@ -0,0 +1,36 @@
+const std = @import("std");
+const zm = @import("zmath");
+
+pub const EntityKinds = .{
+    Player,
+    Monster,
+    Projectile,
+};
+
+pub const Player = struct {
+    pos: zm.Vec,
+    hp: i32,
+
+    pub fn update(self: *Player) void {
+        std.log.info("pos=({})", .{self.pos});
+    }
+};
+
+pub const Monster = struct {
+    pos: zm.Vec,
+    hp: i32,
+
+    pub fn update(self: *Monster) void {
+        std.log.info("pos=({})", .{self.pos});
+    }
+};
+
+pub const Projectile = struct {
+    pos: zm.Vec,
+    vel: zm.Vec,
+
+    pub fn update(self: *Projectile) void {
+        self.pos = self.pos + self.vel;
+        std.log.info("pos=({})", .{self.pos});
+    }
+};
diff --git a/src/shared/misc.zig b/src/shared/misc.zig
new file mode 100644
index 0000000..8efabc5
--- /dev/null
+++ b/src/shared/misc.zig
@@ -0,0 +1,7 @@
+const std = @import("std");
+
+pub fn short_type_name(comptime T: type) [:0]const u8 {
+    const full = @typeName(T);
+    const base = full[std.mem.lastIndexOf(u8, full, ".").? + 1 ..];
+    return base ++ "\x00";
+}
diff --git a/src/shared/protocol.zig b/src/shared/protocol.zig
new file mode 100644
index 0000000..8f1304e
--- /dev/null
+++ b/src/shared/protocol.zig
@@ -0,0 +1,15 @@
+const std = @import("std");
+
+pub const SERVER_PORT: u16 = 1337;
+
+pub const Hello = struct {
+    msg: []const u8,
+};
+
+pub fn sendHello(writer: *std.io.Writer, hello: Hello) !void {
+    try writer.print("{s}\n", .{hello.msg});
+}
+
+pub fn recvLine(reader: *std.io.Reader) ![]u8 {
+    return try reader.takeDelimiterExclusive('\n');
+}
diff --git a/src/shared/shared.zig b/src/shared/shared.zig
new file mode 100644
index 0000000..9951dfb
--- /dev/null
+++ b/src/shared/shared.zig
@@ -0,0 +1,4 @@
+pub const entity = @import("entity.zig");
+pub const chunk = @import("chunk.zig");
+pub const misc = @import("misc.zig");
+pub const protocol = @import("protocol.zig");
diff --git a/zzz.rad_proj b/zzz.rad_proj
new file mode 100644
index 0000000..d802c2e
--- /dev/null
+++ b/zzz.rad_proj
@@ -0,0 +1,31 @@
+// raddbg 0.9.24 project file
+
+recent_file: path: "../../AppData/Local/Microsoft/WinGet/Packages/zig.zig_Microsoft.Winget.Source_8wekyb3d8bbwe/zig-x86_64-windows-0.15.2/lib/std/start.zig"
+recent_file: path: "src/client/main.zig"
+target:
+{
+  executable: "zig-out/bin/server.exe"
+  working_directory: "zig-out/bin/"
+  enabled: 1
+}
+target:
+{
+  executable: "zig-out/bin/client.exe"
+  working_directory: "zig-out/bin/"
+  enabled: 1
+}
+debug_info:
+{
+  path: "C:/Users/vfs/Dev/zzz/zig-out/bin/server.pdb"
+  timestamp: 66201747551645
+}
+debug_info:
+{
+  path: "C:/Users/vfs/Dev/zzz/zig-out/bin/client.pdb"
+  timestamp: 66201747551558
+}
+breakpoint:
+{
+  source_location: "src/client/main.zig:8:1"
+  hit_count: 1
+}