From d86210574b68b5dbda129efdd8596a75bbd8e198 Mon Sep 17 00:00:00 2001
From: khang <mkhangle20@gmail.com>
Date: Tue, 20 Feb 2024 23:48:41 -0500
Subject: [PATCH] bxt_enable_big_map: also big velocity

---
 BunnymodXT/modules/HwDLL.cpp     |  7 +++++++
 BunnymodXT/modules/ServerDLL.cpp | 18 ++++++++----------
 BunnymodXT/shared.hpp            |  1 +
 3 files changed, 16 insertions(+), 10 deletions(-)

diff --git a/BunnymodXT/modules/HwDLL.cpp b/BunnymodXT/modules/HwDLL.cpp
index 0a80fa2f..73d7d519 100644
--- a/BunnymodXT/modules/HwDLL.cpp
+++ b/BunnymodXT/modules/HwDLL.cpp
@@ -5249,6 +5249,13 @@ void ChangeDeltaForBigMap(delta_s *delta)
 				curr_description->significant_bits = (int) std::ceil(std::log(BIG_MAP_SIZE * 2.0f * curr_description->premultiply) / std::log(2));
 			}
 		}
+
+		if (!strncmp(curr_description->fieldName, "velocity", 8) || !strncmp(curr_description->fieldName, "basevelocity", 12)) {
+			auto curr_max_vel = (1 << curr_description->significant_bits) / curr_description->premultiply;
+			if (curr_max_vel < BIG_MAP_MAX_VELOCITY) {
+				curr_description->significant_bits = (int) std::ceil(std::log(BIG_MAP_MAX_VELOCITY * 2.0f * curr_description->premultiply) / std::log(2));
+			}
+		}
 	}
 }
 
diff --git a/BunnymodXT/modules/ServerDLL.cpp b/BunnymodXT/modules/ServerDLL.cpp
index 4097bd4c..77daca99 100644
--- a/BunnymodXT/modules/ServerDLL.cpp
+++ b/BunnymodXT/modules/ServerDLL.cpp
@@ -3276,10 +3276,8 @@ HOOK_DEF_1(ServerDLL, void, __fastcall, CBasePlayer__Jump, void*, thisptr)
 
 int ServerDLL::IsInWorld(Vector origin, Vector velocity, int map_size) // https://github.com/ValveSoftware/halflife/blob/c7240b965743a53a29491dd49320c88eecf6257b/dlls/cbase.cpp#L706
 {
-	// Copy pasted from HLSDK, but origin value is changed
-	// Maybe in the future we should also make velocity check to use sv_maxvelocity value,
-	// but I don't see any side effect when going beyond it ever
-
+	auto max_velocity = CVars::sv_maxvelocity.GetFloat();
+	
 	// position
 	if (origin.x >= map_size) return 0;
 	if (origin.y >= map_size) return 0;
@@ -3288,12 +3286,12 @@ int ServerDLL::IsInWorld(Vector origin, Vector velocity, int map_size) // https:
 	if (origin.y <= -map_size) return 0;
 	if (origin.z <= -map_size) return 0;
 	// speed
-	if (velocity.x >= 2000) return 0;
-	if (velocity.y >= 2000) return 0;
-	if (velocity.z >= 2000) return 0;
-	if (velocity.x <= -2000) return 0;
-	if (velocity.y <= -2000) return 0;
-	if (velocity.z <= -2000) return 0;
+	if (velocity.x >= max_velocity) return 0;
+	if (velocity.y >= max_velocity) return 0;
+	if (velocity.z >= max_velocity) return 0;
+	if (velocity.x <= -max_velocity) return 0;
+	if (velocity.y <= -max_velocity) return 0;
+	if (velocity.z <= -max_velocity) return 0;
 
 	return 1;
 }
diff --git a/BunnymodXT/shared.hpp b/BunnymodXT/shared.hpp
index d3bbcfa6..71e485c2 100644
--- a/BunnymodXT/shared.hpp
+++ b/BunnymodXT/shared.hpp
@@ -20,5 +20,6 @@ enum class EventType : unsigned char {
 #define BUNNYSPLIT_PIPE_NAME "BunnymodXT-BunnySplit"
 
 #define BIG_MAP_SIZE 32768 // +-BIG_MAP_SIZE so 64k x 64k map should have value of 32k
+#define BIG_MAP_MAX_VELOCITY 8192 // +-8192
 
 #define	BXT_FLAGS_BIG_MAP (1<<0)
\ No newline at end of file