iw4x-client/src/Components/Modules/Movement.cpp
2022-01-19 10:48:33 +00:00

303 lines
9.4 KiB
C++

#include "STDInclude.hpp"
namespace Components
{
Dvar::Var Movement::PlayerDuckedSpeedScale;
Dvar::Var Movement::PlayerLastStandCrawlSpeedScale;
Dvar::Var Movement::PlayerProneSpeedScale;
Dvar::Var Movement::PlayerSpectateSpeedScale;
Dvar::Var Movement::CGUfoScaler;
Dvar::Var Movement::CGNoclipScaler;
Dvar::Var Movement::BGBouncesAllAngles;
Game::dvar_t* Movement::BGBounces;
float Movement::PM_CmdScaleForStance(const Game::pmove_s* pm)
{
assert(pm->ps != nullptr);
const auto* playerState = pm->ps;
float scale;
if (playerState->viewHeightLerpTime != 0 && playerState->viewHeightLerpTarget == 0xB)
{
scale = pm->cmd.serverTime - playerState->viewHeightLerpTime / 400.0f;
if (0.0f <= scale)
{
if (scale > 1.0f)
{
scale = 1.0f;
return scale * 0.15f + (1.0f - scale) * 0.65f;
}
if (scale != 0.0f)
{
return scale * 0.15f + (1.0f - scale) * 0.65f;
}
}
}
if ((playerState->viewHeightLerpTime != 0 && playerState->viewHeightLerpTarget == 0x28) &&
playerState->viewHeightLerpDown == 0)
{
scale = 400.0f / pm->cmd.serverTime - playerState->viewHeightLerpTime;
if (0.0f <= scale)
{
if (scale > 1.0f)
{
scale = 1.0f;
}
else if (scale != 0.0f)
{
return scale * 0.65f + (1.0f - scale) * 0.15f;
}
}
}
scale = 1.0f;
const auto stance = Game::PM_GetEffectiveStance(playerState);
if (stance == Game::PM_EFF_STANCE_PRONE)
{
scale = Movement::PlayerProneSpeedScale.get<float>();
}
else if (stance == Game::PM_EFF_STANCE_DUCKED)
{
scale = Movement::PlayerDuckedSpeedScale.get<float>();
}
else if (stance == Game::PM_EFF_STANCE_LASTSTANDCRAWL)
{
scale = Movement::PlayerLastStandCrawlSpeedScale.get<float>();
}
return scale;
}
__declspec(naked) void Movement::PM_CmdScaleForStanceStub()
{
__asm
{
pushad
push edx
call Movement::PM_CmdScaleForStance
add esp, 4
popad
ret
}
}
float Movement::PM_MoveScale(Game::playerState_s* ps, float forwardmove,
float rightmove, float upmove)
{
assert(ps != nullptr);
auto max = (std::fabsf(forwardmove) < std::fabsf(rightmove))
? std::fabsf(rightmove)
: std::fabsf(forwardmove);
if (std::fabsf(upmove) > max)
{
max = std::fabsf(upmove);
}
if (max == 0.0f)
{
return 0.0f;
}
auto total = std::sqrtf(forwardmove * forwardmove
+ rightmove * rightmove + upmove * upmove);
auto scale = (ps->speed * max) / (127.0f * total);
if (ps->pm_flags & Game::PMF_WALKING || ps->leanf != 0.0f)
{
scale *= 0.4f;
}
if (ps->pm_type == Game::PM_NOCLIP)
{
return scale * Movement::CGNoclipScaler.get<float>();
}
if (ps->pm_type == Game::PM_UFO)
{
return scale * Movement::CGUfoScaler.get<float>();
}
if (ps->pm_type == Game::PM_SPECTATOR)
{
return scale * Movement::PlayerSpectateSpeedScale.get<float>();
}
return scale;
}
__declspec(naked) void Movement::PM_MoveScaleStub()
{
__asm
{
pushad
push [esp + 0xC + 0x20]
push [esp + 0xC + 0x20]
push [esp + 0xC + 0x20]
push esi
call Movement::PM_MoveScale
add esp, 0x10
popad
ret
}
}
__declspec(naked) void Movement::PM_StepSlideMoveStub()
{
__asm
{
// Check the value of BGBounces
push ecx
push eax
mov eax, Movement::BGBounces
mov ecx, dword ptr [eax + 0x10]
test ecx, ecx
pop eax
pop ecx
// Do not bounce if BGBounces is 0
jle noBounce
// Bounce
push 0x4B1B34
retn
noBounce:
// Original code
cmp dword ptr [esp + 0x24], 0
push 0x4B1B48
retn
}
}
void Movement::PM_ProjectVelocityStub(const float* velIn, const float* normal, float* velOut)
{
const auto lengthSquared2D = velIn[0] * velIn[0] + velIn[1] * velIn[1];
if (std::fabsf(normal[2]) < 0.001f || lengthSquared2D == 0.0)
{
velOut[0] = velIn[0];
velOut[1] = velIn[1];
velOut[2] = velIn[2];
return;
}
auto newZ = velIn[0] * normal[0] + velIn[1] * normal[1];
newZ = -newZ / normal[2];
const auto lengthScale = std::sqrtf((velIn[2] * velIn[2] + lengthSquared2D)
/ (newZ * newZ + lengthSquared2D));
if (Movement::BGBouncesAllAngles.get<bool>()
|| (lengthScale < 1.f || newZ < 0.f || velIn[2] > 0.f))
{
velOut[0] = velIn[0] * lengthScale;
velOut[1] = velIn[1] * lengthScale;
velOut[2] = newZ * lengthScale;
}
}
// Double bounces
void Movement::Jump_ClearStateHook(Game::playerState_s* ps)
{
if (Movement::BGBounces->current.integer == Movement::DOUBLE)
return;
Game::Jump_ClearState(ps);
}
Game::dvar_t* Movement::Dvar_RegisterLastStandSpeedScale(const char* name, float value,
float min, float max, int, const char* desc)
{
Movement::PlayerLastStandCrawlSpeedScale = Dvar::Register<float>(name, value,
min, max, Game::DVAR_FLAG_CHEAT | Game::DVAR_FLAG_REPLICATED, desc);
return Movement::PlayerLastStandCrawlSpeedScale.get<Game::dvar_t*>();
}
Game::dvar_t* Movement::Dvar_RegisterSpectateSpeedScale(const char* name, float value,
float min, float max, int, const char* desc)
{
Movement::PlayerSpectateSpeedScale = Dvar::Register<float>(name, value,
min, max, Game::DVAR_FLAG_CHEAT | Game::DVAR_FLAG_REPLICATED, desc);
return Movement::PlayerSpectateSpeedScale.get<Game::dvar_t*>();
}
Movement::Movement()
{
Dvar::OnInit([]
{
static const char* bg_bouncesValues[] =
{
"disabled",
"enabled",
"double",
nullptr
};
Movement::PlayerDuckedSpeedScale = Dvar::Register<float>("player_duckedSpeedScale",
0.65f, 0.0f, 5.0f, Game::DVAR_FLAG_CHEAT | Game::DVAR_FLAG_REPLICATED,
"The scale applied to the player speed when ducking");
Movement::PlayerProneSpeedScale = Dvar::Register<float>("player_proneSpeedScale",
0.15f, 0.0f, 5.0f, Game::DVAR_FLAG_CHEAT | Game::DVAR_FLAG_REPLICATED,
"The scale applied to the player speed when crawling");
// 3arch naming convention
Movement::CGUfoScaler = Dvar::Register<float>("cg_ufo_scaler",
6.0f, 0.001f, 1000.0f, Game::DVAR_FLAG_CHEAT | Game::DVAR_FLAG_REPLICATED,
"The speed at which ufo camera moves");
Movement::CGNoclipScaler = Dvar::Register<float>("cg_noclip_scaler",
3.0f, 0.001f, 1000.0f, Game::DVAR_FLAG_CHEAT | Game::DVAR_FLAG_REPLICATED,
"The speed at which noclip camera moves");
Movement::BGBounces = Game::Dvar_RegisterEnum("bg_bounces",
bg_bouncesValues, Movement::DISABLED, Game::DVAR_FLAG_REPLICATED, "Bounce glitch settings");
Movement::BGBouncesAllAngles = Dvar::Register<bool>("bg_bouncesAllAngles",
false, Game::DVAR_FLAG_REPLICATED, "Force bounce from all angles");
});
// Hook PM_CmdScaleForStance in PM_CmdScale_Walk
Utils::Hook(0x572F34, Movement::PM_CmdScaleForStanceStub, HOOK_CALL).install()->quick();
//Hook PM_CmdScaleForStance in PM_GetMaxSpeed
Utils::Hook(0x57395F, Movement::PM_CmdScaleForStanceStub, HOOK_CALL).install()->quick();
// Hook Dvar_RegisterFloat. Only thing that's changed is that the 0x80 flag is not used.
Utils::Hook(0x448B66, Movement::Dvar_RegisterLastStandSpeedScale, HOOK_CALL).install()->quick();
// Hook Dvar_RegisterFloat. Only thing that's changed is that the 0x80 flag is not used.
Utils::Hook(0x448990, Movement::Dvar_RegisterSpectateSpeedScale, HOOK_CALL).install()->quick();
// Hook PM_MoveScale so we can add custom speed scale for Ufo and Noclip
Utils::Hook(0x56F845, Movement::PM_MoveScaleStub, HOOK_CALL).install()->quick();
Utils::Hook(0x56FABD, Movement::PM_MoveScaleStub, HOOK_CALL).install()->quick();
// Bounce logic
Utils::Hook(0x4B1B2D, Movement::PM_StepSlideMoveStub, HOOK_JUMP).install()->quick();
Utils::Hook(0x57383E, Movement::Jump_ClearStateHook, HOOK_CALL).install()->quick();
Utils::Hook(0x4B1B97, Movement::PM_ProjectVelocityStub, HOOK_CALL).install()->quick();
}
Movement::~Movement()
{
}
}