From 01fd323e8dbeac597fed56412891c32ce55c187c Mon Sep 17 00:00:00 2001
From: ricardoofnl <raditiyaeltamricardo@outlook.de>
Date: Fri, 4 Sep 2026 21:55:56 +0700
Subject: [PATCH] [saco] Implement/match `CVehiclePool::FUNC_1001ED10`; the
 waiting slots are 100 forty byte entries and the scan must be a `do`/`while(i
 != n)`

---
 saco/net/vehiclepool.cpp | 21 +++++++++++++++++++++
 saco/net/vehiclepool.h   | 15 +++++++++++++--
 2 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/saco/net/vehiclepool.cpp b/saco/net/vehiclepool.cpp
index a82bb06..78b48a9 100644
--- a/saco/net/vehiclepool.cpp
+++ b/saco/net/vehiclepool.cpp
@@ -2,6 +2,7 @@
 #include "../main.h"
 #include "../game/util.h"
 
+extern CChatWindow *pChatWindow;
 extern int dword_1026EBA0;
 
 // same layout as the camera collision points that game/hooks.cpp passes around
@@ -24,6 +25,8 @@ public:
 
 // layout locks: these fail to compile if a field offset or the size moves
 typedef char chk_CVehiclePool_size[sizeof(CVehiclePool) == 0x17898 ? 1 : -1];
+typedef char chk_VEHICLE_WAITING_size[sizeof(VEHICLE_WAITING) == 40 ? 1 : -1];
+typedef char chk_field_4[offsetof(CVehiclePool, field_4) == 4 ? 1 : -1];
 typedef char chk_field_FA4[offsetof(CVehiclePool, field_FA4) == 0xFA4 ? 1 : -1];
 typedef char chk_field_1134[offsetof(CVehiclePool, field_1134) == 0x1134 ? 1 : -1];
 typedef char chk_field_3074[offsetof(CVehiclePool, field_3074) == 0x3074 ? 1 : -1];
@@ -273,3 +276,21 @@ short CVehiclePool::FUNC_1001EF30(float fMaxDistance, VECTOR *vecStart, VECTOR *
 }
 
 //----------------------------------------------------
+
+int CVehiclePool::FUNC_1001ED10(VEHICLE_WAITING *pWaiting)
+{
+	// do/while with a `!=` bound, a for or while here gets unrolled or rotated
+	int i = 0;
+	do {
+		if(!field_FA4[i]) break;
+		i++;
+	} while(i != MAX_WAITING_VEHICLES);
+	if(i == MAX_WAITING_VEHICLES)
+		return pChatWindow->AddDebugMessage("All vehicle waiting slots are consumed!");
+
+	field_FA4[i] = 1;
+	field_4[i] = *pWaiting;
+	return i;
+}
+
+//----------------------------------------------------
diff --git a/saco/net/vehiclepool.h b/saco/net/vehiclepool.h
index 6b09c0c..b338783 100644
--- a/saco/net/vehiclepool.h
+++ b/saco/net/vehiclepool.h
@@ -2,6 +2,15 @@
 #pragma once
 
 #define INVALID_VEHICLE_ID 0xFFFF
+#define MAX_WAITING_VEHICLES 100
+
+//----------------------------------------------------
+
+// a vehicle the pool cannot create yet is parked in one of these; the payload layout is unresolved
+struct VEHICLE_WAITING
+{
+	char field_0[40];
+};
 
 //----------------------------------------------------
 
@@ -10,9 +19,9 @@ class CVehiclePool
 public:
 	int field_0;
 
-	char _gap4[4000];
+	VEHICLE_WAITING field_4[MAX_WAITING_VEHICLES];
 
-	char field_FA4[400];
+	int field_FA4[MAX_WAITING_VEHICLES];
 	int field_1134[MAX_VEHICLES];
 	int field_3074[MAX_VEHICLES];
 	int field_4FB4[MAX_VEHICLES];
@@ -55,6 +64,8 @@ public:
 
 	int FUNC_1001EC00(); // .text:1001EC00
 
+	int FUNC_1001ED10(VEHICLE_WAITING *pWaiting); // .text:1001ED10
+
 	int FUNC_1001EC70(float fX, float fY, float fZ); // .text:1001EC70
 
 	short FUNC_1001EF30(float fMaxDistance, VECTOR *vecStart, VECTOR *vecEnd, float fRadius); // .text:1001EF30