Initial implementation of weapons predicting

client/CMakeLists.txt

@@ -57,6 +57,8 @@ list(APPEND CLDLL_SOURCES
 	"${CMAKE_SOURCE_DIR}/game_shared/stringlib.cpp"
 	"${CMAKE_SOURCE_DIR}/game_shared/virtualfs.cpp"
 	"${CMAKE_SOURCE_DIR}/game_shared/trace.cpp"
+	"${CMAKE_SOURCE_DIR}/game_shared/weapon_context.cpp"
+	"${CMAKE_SOURCE_DIR}/game_shared/seeded_random_generator.cpp"
 	"${CMAKE_SOURCE_DIR}/game_shared/filesystem_utils.cpp"
 	"${CMAKE_SOURCE_DIR}/game_shared/filesystem_manager.cpp"
 	"${CMAKE_SOURCE_DIR}/public/crclib.cpp"
@@ -68,6 +70,9 @@ file(GLOB RENDER_SOURCES "render/*.cpp")
 # entity wrappers source files
 file(GLOB ENTITIES_SOURCES "entities/*.cpp")
 
+# weapon shared code source files
+file(GLOB WEAPONS_SHARED_SOURCES "${CMAKE_SOURCE_DIR}/game_shared/weapons/*.cpp")
+
 # ImGui source files
 if(NOT ENABLE_VGUI_COMPATIBILITY)
 	list(APPEND IMGUI_SOURCES
@@ -84,6 +89,7 @@ endif()
 
 list(APPEND CLDLL_SOURCES ${RENDER_SOURCES})
 list(APPEND CLDLL_SOURCES ${ENTITIES_SOURCES})
+list(APPEND CLDLL_SOURCES ${WEAPONS_SHARED_SOURCES})
 add_library(${PROJECT_NAME} SHARED ${CLDLL_SOURCES})
 
 target_include_directories(${PROJECT_NAME} PRIVATE

engine/progdefs.h

@@ -16,6 +16,8 @@
 #ifndef PROGDEFS_H
 #define PROGDEFS_H
 
+#include "const.h"
+
 typedef struct
 {	
 	float		time;

game_shared/item_info.h

@@ -0,0 +1,46 @@
+#pragma once
+#include "cdll_dll.h"
+
+#define ITEM_FLAG_SELECTONEMPTY		1
+#define ITEM_FLAG_NOAUTORELOAD		2
+#define ITEM_FLAG_NOAUTOSWITCHEMPTY	4
+#define ITEM_FLAG_LIMITINWORLD		8
+#define ITEM_FLAG_EXHAUSTIBLE		16 // A player can totally exhaust their ammo supply and lose this weapon
+
+#define WEAPON_NOCLIP			-1
+#define WEAPON_ALLWEAPONS		(~(1<<WEAPON_SUIT))
+
+// weapon clip/carry ammo capacities
+#define URANIUM_MAX_CARRY		100
+#define	_9MM_MAX_CARRY			250
+#define _357_MAX_CARRY			36
+#define BUCKSHOT_MAX_CARRY		125
+#define BOLT_MAX_CARRY			50
+#define ROCKET_MAX_CARRY		5
+#define HANDGRENADE_MAX_CARRY	10
+#define SATCHEL_MAX_CARRY		5
+#define TRIPMINE_MAX_CARRY		5
+#define SNARK_MAX_CARRY			15
+#define HORNET_MAX_CARRY		8
+#define M203_GRENADE_MAX_CARRY	10
+
+typedef struct
+{
+	int		iSlot;
+	int		iPosition;
+	const char	*pszAmmo1;	// ammo 1 type
+	int		iMaxAmmo1;		// max ammo 1
+	const char	*pszAmmo2;	// ammo 2 type
+	int		iMaxAmmo2;		// max ammo 2
+	const char	*pszName;
+	int		iMaxClip;
+	int		iId;
+	int		iFlags;
+	int		iWeight;// this value used to determine this weapon's importance in autoselection.
+} ItemInfo;
+
+typedef struct
+{
+	const char *pszName;
+	int iId;
+} AmmoInfo;

game_shared/seeded_random_generator.cpp

@@ -0,0 +1,81 @@
+/*
+seeded_random_generator.cpp - stateless random numbers generator, used within weapon predicting
+Copyright (C) 2024 SNMetamorph
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+*/
+
+#include "seeded_random_generator.h"
+#include <cstring>
+
+const uint32_t ÑSeededRandomGenerator::m_seedTable[256] =
+{
+	28985, 27138, 26457, 9451, 17764, 10909, 28790, 8716, 6361, 4853, 17798, 21977, 19643, 20662, 10834, 20103,
+	27067, 28634, 18623, 25849, 8576, 26234, 23887, 18228, 32587, 4836, 3306, 1811, 3035, 24559, 18399, 315,
+	26766, 907, 24102, 12370, 9674, 2972, 10472, 16492, 22683, 11529, 27968, 30406, 13213, 2319, 23620, 16823,
+	10013, 23772, 21567, 1251, 19579, 20313, 18241, 30130, 8402, 20807, 27354, 7169, 21211, 17293, 5410, 19223,
+	10255, 22480, 27388, 9946, 15628, 24389, 17308, 2370, 9530, 31683, 25927, 23567, 11694, 26397, 32602, 15031,
+	18255, 17582, 1422, 28835, 23607, 12597, 20602, 10138, 5212, 1252, 10074, 23166, 19823, 31667, 5902, 24630,
+	18948, 14330, 14950, 8939, 23540, 21311, 22428, 22391, 3583, 29004, 30498, 18714, 4278, 2437, 22430, 3439,
+	28313, 23161, 25396, 13471, 19324, 15287, 2563, 18901, 13103, 16867, 9714, 14322, 15197, 26889, 19372, 26241,
+	31925, 14640, 11497, 8941, 10056, 6451, 28656, 10737, 13874, 17356, 8281, 25937, 1661, 4850, 7448, 12744,
+	21826, 5477, 10167, 16705, 26897, 8839, 30947, 27978, 27283, 24685, 32298, 3525, 12398, 28726, 9475, 10208,
+	617, 13467, 22287, 2376, 6097, 26312, 2974, 9114, 21787, 28010, 4725, 15387, 3274, 10762, 31695, 17320,
+	18324, 12441, 16801, 27376, 22464, 7500, 5666, 18144, 15314, 31914, 31627, 6495, 5226, 31203, 2331, 4668,
+	12650, 18275, 351, 7268, 31319, 30119, 7600, 2905, 13826, 11343, 13053, 15583, 30055, 31093, 5067, 761,
+	9685, 11070, 21369, 27155, 3663, 26542, 20169, 12161, 15411, 30401, 7580, 31784, 8985, 29367, 20989, 14203,
+	29694, 21167, 10337, 1706, 28578, 887, 3373, 19477, 14382, 675, 7033, 15111, 26138, 12252, 30996, 21409,
+	25678, 18555, 13256, 23316, 22407, 16727, 991, 9236, 5373, 29402, 6117, 15241, 27715, 19291, 19888, 19847
+};
+
+int32_t ÑSeededRandomGenerator::GetInteger(uint32_t seed, int32_t min, int32_t max) const
+{
+	int32_t range = max - min;
+	if (range <= 0) {
+		return min;
+	}
+	else 
+	{
+		uint32_t initialSeed = m_seedTable[static_cast<int32_t>(seed + min + max) & 0xFF];
+		uint32_t value = ExecuteRound(initialSeed);
+		return min + (value % range);
+	}
+}
+
+float ÑSeededRandomGenerator::GetFloat(uint32_t seed, float min, float max) const
+{
+	int32_t a, b;
+	std::memcpy(&a, &min, sizeof(a));
+	std::memcpy(&b, &max, sizeof(b));
+
+	float range = max - min;
+	if (range <= 0.0f) {
+		return min;
+	}
+	else
+	{
+		uint32_t initialSeed = m_seedTable[static_cast<int32_t>(seed + a + b) & 0xFF];
+		for (int32_t i = 0; i < 2; i++) {
+			ExecuteRound(initialSeed);
+		}
+		uint32_t value = ExecuteRound(initialSeed) & 0xFFFF;
+		float fraction = value / 65536.0f;
+		return min + (range * fraction);
+	}
+}
+
+uint32_t ÑSeededRandomGenerator::ExecuteRound(uint32_t &seed) const
+{
+	seed *= 69069;
+	seed += m_seedTable[seed & 0xFF];
+	seed += 1;
+	return seed & 0x0FFFFFFF;
+}

game_shared/seeded_random_generator.h

@@ -0,0 +1,29 @@
+/*
+seeded_random_generator.h - stateless random numbers generator, used within weapon predicting
+Copyright (C) 2024 SNMetamorph
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+*/
+
+#pragma once
+#include <stdint.h>
+
+class ÑSeededRandomGenerator
+{
+public:
+	int32_t GetInteger(uint32_t seed, int32_t min, int32_t max) const;
+	float GetFloat(uint32_t seed, float min, float max) const;
+
+private:
+	uint32_t ExecuteRound(uint32_t &seed) const;
+
+	static const uint32_t m_seedTable[256];
+};