From 5f192f224f95214cb74f6a2330fd8687c95b7473 Mon Sep 17 00:00:00 2001
From: IntegratedQuantum <jahe788@gmail.com>
Date: Mon, 1 Jul 2024 16:36:54 +0200
Subject: [PATCH] Decrease the compression ratio of stored maps to improve
 their generation time.

helps with #513
---
 src/network.zig                   | 2 +-
 src/server/storage.zig            | 2 +-
 src/server/terrain/SurfaceMap.zig | 2 +-
 src/utils.zig                     | 4 ++--
 4 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/network.zig b/src/network.zig
index 1afb4ed9..bff1986f 100644
--- a/src/network.zig
+++ b/src/network.zig
@@ -1225,7 +1225,7 @@ pub const Protocols = struct {
 			for(&map.startHeight, 0..) |val, i| {
 				std.mem.writeInt(i16, uncompressedData[2*i..][0..2], val, .big);
 			}
-			const compressedData = utils.Compression.deflate(main.stackAllocator, &uncompressedData);
+			const compressedData = utils.Compression.deflate(main.stackAllocator, &uncompressedData, .default);
 			defer main.stackAllocator.free(compressedData);
 			const data = main.stackAllocator.alloc(u8, 9 + compressedData.len);
 			defer main.stackAllocator.free(data);
diff --git a/src/server/storage.zig b/src/server/storage.zig
index 0df6b303..2a77387d 100644
--- a/src/server/storage.zig
+++ b/src/server/storage.zig
@@ -216,7 +216,7 @@ pub const ChunkCompression = struct {
 		for(0..chunk.chunkVolume) |i| {
 			std.mem.writeInt(u32, uncompressedData[4*i..][0..4], ch.data.getValue(i).toInt(), .big);
 		}
-		const compressedData = main.utils.Compression.deflate(main.stackAllocator, &uncompressedData);
+		const compressedData = main.utils.Compression.deflate(main.stackAllocator, &uncompressedData, .default);
 		defer main.stackAllocator.free(compressedData);
 		const data = allocator.alloc(u8, 4 + compressedData.len);
 		@memcpy(data[4..], compressedData);
diff --git a/src/server/terrain/SurfaceMap.zig b/src/server/terrain/SurfaceMap.zig
index f536c97b..82b18478 100644
--- a/src/server/terrain/SurfaceMap.zig
+++ b/src/server/terrain/SurfaceMap.zig
@@ -187,7 +187,7 @@ pub const MapFragment = struct {
 				std.mem.writeInt(u32, originalHeightData[4*(x*mapSize + y)..][0..4], @bitCast((if(originalData) |map| map else &self.heightMap)[x][y]), .big);
 			}
 		}
-		const compressedData = main.utils.Compression.deflate(main.stackAllocator, rawData);
+		const compressedData = main.utils.Compression.deflate(main.stackAllocator, rawData, .fast);
 		defer main.stackAllocator.free(compressedData);
 		
 		const fullData = main.stackAllocator.alloc(u8, compressedData.len + @sizeOf(StorageHeader));
diff --git a/src/utils.zig b/src/utils.zig
index c3ab77c2..2bab48a7 100644
--- a/src/utils.zig
+++ b/src/utils.zig
@@ -8,9 +8,9 @@ const main = @import("main.zig");
 pub const file_monitor = @import("utils/file_monitor.zig");
 
 pub const Compression = struct {
-	pub fn deflate(allocator: NeverFailingAllocator, data: []const u8) []u8 {
+	pub fn deflate(allocator: NeverFailingAllocator, data: []const u8, level: std.compress.flate.deflate.Level) []u8 {
 		var result = main.List(u8).init(allocator);
-		var comp = std.compress.flate.compressor(result.writer(), .{}) catch unreachable;
+		var comp = std.compress.flate.compressor(result.writer(), .{.level = level}) catch unreachable;
 		_ = comp.write(data) catch unreachable;
 		comp.finish() catch unreachable;
 		return result.toOwnedSlice();