Add /set command

src/server/command/_list.zig

@@ -14,3 +14,4 @@ pub const copy = @import("worldedit/copy.zig");
 pub const paste = @import("worldedit/paste.zig");
 pub const blueprint = @import("worldedit/blueprint.zig");
 pub const rotate = @import("worldedit/rotate.zig");
+pub const set = @import("worldedit/set.zig");

src/server/command/worldedit/set.zig

@@ -0,0 +1,51 @@
+const std = @import("std");
+
+const main = @import("main");
+const User = main.server.User;
+const Pattern = @import("Pattern.zig");
+
+const Block = main.blocks.Block;
+const Blueprint = main.blueprint.Blueprint;
+
+pub const description = "Set all blocks within selection to a block.";
+pub const usage = "/set <pattern>";
+
+pub fn execute(args: []const u8, source: *User) void {
+	if(args.len == 0) {
+		source.sendMessage("#ff0000Missing required <pattern> argument.", .{});
+		return;
+	}
+	const pos1 = source.worldEditData.selectionPosition1 orelse {
+		return source.sendMessage("#ff0000Position 1 isn't set", .{});
+	};
+	const pos2 = source.worldEditData.selectionPosition2 orelse {
+		return source.sendMessage("#ff0000Position 2 isn't set", .{});
+	};
+	const pattern = Pattern.initFromString(main.stackAllocator, args) catch |err| {
+		source.sendMessage("#ff0000Error parsing pattern: {}", .{err});
+		return;
+	};
+	defer pattern.deinit(main.stackAllocator);
+
+	const startX = @min(pos1[0], pos2[0]);
+	const startY = @min(pos1[1], pos2[1]);
+	const startZ = @min(pos1[2], pos2[2]);
+
+	const width = @abs(pos2[0] - pos1[0]) + 1;
+	const depth = @abs(pos2[1] - pos1[1]) + 1;
+	const height = @abs(pos2[2] - pos1[2]) + 1;
+
+	for(0..width) |x| {
+		const worldX = startX +% @as(i32, @intCast(x));
+
+		for(0..depth) |y| {
+			const worldY = startY +% @as(i32, @intCast(y));
+
+			for(0..height) |z| {
+				const worldZ = startZ +% @as(i32, @intCast(z));
+
+				_ = main.server.world.?.updateBlock(worldX, worldY, worldZ, pattern.blocks.sample(&main.seed).block);
+			}
+		}
+	}
+}