Rim/iw5-mod
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Merge pull request #74 from diamante0018/master

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Implement gravity and speed dvars
This commit is contained in:
Maurice Heumann 2022-04-18 14:34:22 +02:00 committed by GitHub
commit 930b495c55
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 54 additions and 0 deletions
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48
src/module/player_movement.cpp
View File

@ -18,6 +18,8 @@ const game::native::dvar_t* player_movement::pm_playerEjection;
const game::native::dvar_t* player_movement::pm_playerCollision;
const game::native::dvar_t* player_movement::pm_rocketJump;
const game::native::dvar_t* player_movement::pm_elevators;
const game::native::dvar_t* player_movement::bg_gravity;
const game::native::dvar_t* player_movement::g_speed;
DWORD player_movement::bounce_addr;
DWORD player_movement::dont_bounce_addr;
@ -315,6 +317,41 @@ void player_movement::pm_project_velocity_stub(const float* vel_in, const float*
}
}
__declspec(naked) void player_movement::bg_gravity_stub()
{
__asm
{
push eax
mov eax, player_movement::bg_gravity
// Quick and widely available extension since 1999
cvttss2si eax, dword ptr [eax + 0xC]
mov dword ptr [ebp + 0x58], eax // ps.gravity
pop eax
push 0x4F9BBA
retn
}
}
__declspec(naked) void player_movement::g_speed_stub()
{
__asm
{
push eax
mov eax, player_movement::g_speed
mov eax, dword ptr [eax + 0xC]
mov dword ptr [ebp + 0x5C], eax // ps.speed
pop eax
push 0x4F93E4
retn
}
}
const game::native::dvar_t* player_movement::dvar_register_player_sustain_ammo(const char* dvar_name,
bool value, unsigned __int16 /*flags*/, const char* description)
{
@ -375,6 +412,11 @@ void player_movement::patch_mp()
true, game::native::DVAR_CODINFO, "Push intersecting players away from each other");
player_movement::pm_rocketJump = game::native::Dvar_RegisterBool("pm_rocketJump",
false, game::native::DVAR_CODINFO, "CoD4 rocket jumps");
// Name is correct, SP registers this dvar in BG_RegisterDvars but still names it just "g_gravity"
player_movement::bg_gravity = game::native::Dvar_RegisterFloat("g_gravity", 800.0f,
1.0f, std::numeric_limits<float>::max(), game::native::DVAR_CODINFO, "Gravity in inches per second per second");
player_movement::g_speed = game::native::Dvar_RegisterInt("g_speed", 190,
std::numeric_limits<int>::min(), std::numeric_limits<int>::max(), game::native::DVAR_CODINFO, "Player speed");
// Un-Cheat the dvars
utils::hook(0x418D9C, &player_movement::dvar_register_player_sustain_ammo, HOOK_CALL).install()->quick();
@ -423,6 +465,12 @@ void player_movement::patch_mp()
utils::hook::nop(0x4166F5, 1); // Nop skipped opcode
utils::hook(0x424E0A, &player_movement::pm_project_velocity_stub, HOOK_CALL).install()->quick(); // PM_StepSlideMove
utils::hook(0x4F9BB3, &player_movement::bg_gravity_stub, HOOK_JUMP).install()->quick(); // ClientEndFrame
utils::hook::nop(0x4F9BB8, 2); // Nop skipped opcode
utils::hook(0x4F93D7, &player_movement::g_speed_stub, HOOK_JUMP).install()->quick(); // ClientThink_real
utils::hook::nop(0x4F93DC, 2); // Nop skipped opcode
}
void player_movement::patch_sp()

6
src/module/player_movement.hpp
View File

@ -19,6 +19,8 @@ private:
static const game::native::dvar_t* pm_playerCollision;
static const game::native::dvar_t* pm_rocketJump;
static const game::native::dvar_t* pm_elevators;
static const game::native::dvar_t* bg_gravity;
static const game::native::dvar_t* g_speed;
static DWORD bounce_addr;
static DWORD dont_bounce_addr;
@ -77,6 +79,10 @@ private:
static void pm_project_velocity_stub(const float* vel_in, const float* normal, float* vel_out);
// On SP these are already implemented
static void bg_gravity_stub();
static void g_speed_stub();
static void patch_mp();
static void patch_sp();
};