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metaforce/Runtime/MP1/World/CGrenadeLauncher.cpp

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#include "Runtime/MP1/World/CGrenadeLauncher.hpp"
#include "Runtime/Character/CPASAnimParm.hpp"
#include "Runtime/Character/CPASAnimParmData.hpp"
#include "Runtime/CSimplePool.hpp"
#include "Runtime/CStateManager.hpp"
#include "Runtime/GameGlobalObjects.hpp"
#include "Runtime/Weapon/CGameProjectile.hpp"
#include "Runtime/World/CExplosion.hpp"
#include "Runtime/World/CPatterned.hpp"
#include "Runtime/World/CPlayer.hpp"
namespace metaforce::MP1 {
CGrenadeLauncher::CGrenadeLauncher(TUniqueId uid, std::string_view name, const CEntityInfo& info,
const zeus::CTransform& xf, CModelData&& mData, const zeus::CAABox& bounds,
const CHealthInfo& healthInfo, const CDamageVulnerability& vulnerability,
const CActorParameters& actParams, TUniqueId parentId,
const SGrenadeLauncherData& data, float f1)
: CPhysicsActor(uid, true, name, info, xf, std::move(mData), {EMaterialTypes::Character, EMaterialTypes::Solid}, bounds,
SMoverData{1000.f}, actParams, 0.3f, 0.1f)
, x25c_healthInfo(healthInfo)
, x264_vulnerability(vulnerability)
, x2cc_parentId(parentId)
, x2d0_data(data)
, x328_cSphere({{}, mData.GetScale().z()}, {EMaterialTypes::Character, EMaterialTypes::Solid})
, x350_grenadeActorParams(actParams)
, x3e8_thermalMag(actParams.GetThermalMag())
, x3f8_explodePlayerDistance(f1) {
if (data.GetShootParticleGenDescId().IsValid()) {
x3b8_particleGenDesc = g_SimplePool->GetObj({SBIG('PART'), data.GetShootParticleGenDescId()});
}
GetModelData()->EnableLooping(true);
const CPASDatabase& pasDatabase = GetModelData()->GetAnimationData()->GetCharacterInfo().GetPASDatabase();
for (size_t i = 0; i < x3c8_animIds.size(); ++i) {
const auto result = pasDatabase.FindBestAnimation(
CPASAnimParmData{pas::EAnimationState::AdditiveAim, CPASAnimParm::FromEnum(int(i))}, -1);
x3c8_animIds[i] = result.second;
}
}
zeus::CVector3f CGrenadeLauncher::GrenadeTarget(const CStateManager& mgr) {
const zeus::CVector3f aim = mgr.GetPlayer().GetAimPosition(mgr, 1.f);
if (mgr.GetPlayer().GetMorphballTransitionState() == CPlayer::EPlayerMorphBallState::Unmorphed) {
return aim - zeus::CVector3f{0.f, 0.f, 0.5f * mgr.GetPlayer().GetEyeHeight()};
}
return aim;
}
void CGrenadeLauncher::CalculateGrenadeTrajectory(const zeus::CVector3f& target, const zeus::CVector3f& origin,
const SGrenadeTrajectoryInfo& info, float& angleOut,
float& velocityOut) {
float angle = info.GetAngleMin();
float velocity = info.GetVelocityMin();
float delta = std::max(0.01f, 0.1f * (info.GetAngleMax() - info.GetAngleMin()));
zeus::CVector3f dist = target - origin;
float distXYMag = dist.toVec2f().magnitude();
float velocityMinSq = info.GetVelocityMin() * info.GetVelocityMin();
float velocityMaxSq = info.GetVelocityMax() * info.GetVelocityMax();
float gravAdj = distXYMag * ((0.5f * CPhysicsActor::GravityConstant()) * distXYMag);
float currAngle = info.GetAngleMin();
float leastResult = FLT_MAX;
while (info.GetAngleMax() >= currAngle) {
float cos = std::cos(currAngle);
float sin = std::sin(currAngle);
float result = (distXYMag * (cos * sin) - (dist.z() * (cos * cos)));
if (result > FLT_EPSILON) {
float div = gravAdj / result;
if (velocityMinSq <= result && result <= velocityMaxSq) {
angle = currAngle;
velocity = std::sqrt(div);
break;
}
if (result <= velocityMaxSq) {
result = velocityMinSq - result;
} else {
result = result - velocityMaxSq;
}
if (result < leastResult) {
angle = currAngle;
velocity = std::sqrt(div);
leastResult = result;
}
}
currAngle += delta;
}
angleOut = angle;
velocityOut = velocity;
}
void CGrenadeLauncher::AcceptScriptMsg(EScriptObjectMessage msg, TUniqueId uid, CStateManager& mgr) {
CActor::AcceptScriptMsg(msg, uid, mgr);
switch (msg) {
case EScriptObjectMessage::Start:
if (x2cc_parentId == uid && x258_started != 1) {
x258_started = 1;
UpdateStartAnimation();
}
break;
case EScriptObjectMessage::Stop:
if (x2cc_parentId == uid && x258_started != 0) {
x258_started = 0;
UpdateStartAnimation();
}
break;
case EScriptObjectMessage::Action:
if (x2cc_parentId == uid && x258_started == 1) {
x3fc_launchGrenade = true;
}
break;
case EScriptObjectMessage::Registered:
UpdateStartAnimation();
break;
case EScriptObjectMessage::Damage:
x3ec_damageTimer = 0.33f;
break;
default:
break;
}
}
void CGrenadeLauncher::AddToRenderer(const zeus::CFrustum& frustum, CStateManager& mgr) {
CActor::AddToRenderer(frustum, mgr);
}
std::optional<zeus::CAABox> CGrenadeLauncher::GetTouchBounds() const {
return x328_cSphere.CalculateAABox(GetTransform());
}
void CGrenadeLauncher::PreRender(CStateManager& mgr, const zeus::CFrustum& frustum) {
if (x3f4_damageAddColor.a() == 1.f) {
xb4_drawFlags = CModelFlags{2, 0, 3, zeus::skWhite};
// Original code redundantly sets a() = 1.f
// TODO xb4_drawFlags.addColor = x3f4_damageAddColor;
} else {
xb4_drawFlags = CModelFlags{5, 0, 3, x3f4_damageAddColor};
}
CActor::PreRender(mgr, frustum);
}
void CGrenadeLauncher::Render(CStateManager& mgr) {
if (x3fd_visible) {
CPhysicsActor::Render(mgr);
}
}
void CGrenadeLauncher::Think(float dt, CStateManager& mgr) {
if (GetActive()) {
if (x3fc_launchGrenade) {
LaunchGrenade(mgr);
x3fc_launchGrenade = false;
}
UpdateCollision();
UpdateColor(dt);
UpdateFollowPlayer(mgr, dt);
UpdateDamageTime(dt);
const SAdvancementDeltas& deltas = CActor::UpdateAnimation(dt, mgr, true);
MoveToOR(deltas.x0_posDelta, dt);
RotateToOR(deltas.xc_rotDelta, dt);
TCastToPtr<CPatterned> parent = mgr.ObjectById(x2cc_parentId);
if (parent == nullptr || !parent->IsAlive() || parent->HealthInfo(mgr)->GetHP() <= 0.f) {
mgr.SendScriptMsg(parent, GetUniqueId(), EScriptObjectMessage::Damage);
CreateExplosion(mgr);
mgr.FreeScriptObject(GetUniqueId());
}
}
}
void CGrenadeLauncher::Touch(CActor& act, CStateManager& mgr) {
if (TCastToPtr<CGameProjectile> projectile = act) {
if (projectile->GetOwnerId() == mgr.GetPlayer().GetUniqueId() &&
GetDamageVulnerability()->WeaponHurts(CWeaponMode{projectile->GetType()}, false)) {
x348_shotTimer = 0.5f;
CEntity* parent = mgr.ObjectById(x2cc_parentId);
if (parent != nullptr) {
mgr.SendScriptMsg(parent, GetUniqueId(), EScriptObjectMessage::Touched);
}
}
}
}
void CGrenadeLauncher::UpdateCollision() {
x328_cSphere.SetSphereCenter(GetLocatorTransform("lockon_target_LCTR"sv).origin);
}
void CGrenadeLauncher::UpdateColor(float arg) {
if (x348_shotTimer > 0.f) {
x348_shotTimer = std::max(0.f, x348_shotTimer - arg);
x34c_color1 = zeus::CColor::lerp(zeus::skWhite, zeus::skRed, x348_shotTimer);
}
}
void CGrenadeLauncher::UpdateDamageTime(float arg) {
if (x3ec_damageTimer <= 0.f) {
xd0_damageMag = x3e8_thermalMag;
} else {
x3ec_damageTimer = std::max(0.f, x3ec_damageTimer - arg);
x3f4_damageAddColor =
zeus::CColor::lerp(zeus::skBlack, x3f0_color2, std::clamp(x3ec_damageTimer / 0.33f, 0.f, 1.f));
xd0_damageMag = 5.f * x3ec_damageTimer + x3e8_thermalMag;
}
}
void CGrenadeLauncher::CreateExplosion(CStateManager& mgr) {
if (!x3b8_particleGenDesc) {
return;
}
mgr.AddObject(new CExplosion(*x3b8_particleGenDesc, mgr.AllocateUniqueId(), true,
{GetAreaIdAlways(), CEntity::NullConnectionList}, "Grenade Launcher Explode Fx"sv,
GetTransform(), 0, GetModelData()->GetScale(), zeus::skWhite));
CSfxManager::SfxStart(x2d0_data.GetShootSfxId(), 1.f, 1.f, false, 0x7f, false, kInvalidAreaId);
}
void CGrenadeLauncher::UpdateFollowPlayer(CStateManager& mgr, float dt) {
CModelData* modelData = GetModelData();
CAnimData* animData = nullptr;
if (modelData != nullptr && (animData = modelData->GetAnimationData()) != nullptr && x258_started == 1 &&
x3fe_followPlayer) {
const zeus::CVector3f target = mgr.GetPlayer().GetAimPosition(mgr, 0.f) - GetTranslation();
const zeus::CVector3f rot = GetTransform().transposeRotate({target.x(), target.y(), 0.f});
if (rot.canBeNormalized()) {
constexpr float p36d = zeus::degToRad(36.476f);
constexpr float n45d = zeus::degToRad(-45.f);
constexpr float p45d = zeus::degToRad(45.f);
float l84 = p36d * std::clamp(std::atan2(rot.x(), rot.y()), n45d, p45d);
float l88 = std::clamp((0.25f * (l84 - x3d8_)) / dt, -3.f, 3.f);
float l8c = std::clamp((l88 - x3dc_) / dt, -10.f, 10.f);
x3dc_ += dt * l8c;
float l90 = p36d * std::clamp(std::atan2(rot.z(), rot.toVec2f().magnitude()), n45d, p45d);
l88 = std::clamp((0.25f * (l90 - x3e0_)) / dt, -3.f, 3.f);
l8c = std::clamp((l88 - x3e4_) / dt, -10.f, 10.f);
x3e4_ += dt * l8c;
float dVar7 = std::clamp(dt * x3dc_ + x3d8_, -0.5f, 0.5f);
float dVar8 = std::clamp(dt * x3e4_ + x3e0_, -0.5f, 0.5f);
if (dVar7 != x3d8_) {
if (std::abs(x3d8_) > 0.f && x3d8_ * dVar7 <= 0.f) {
animData->DelAdditiveAnimation(x3c8_animIds[x3d8_ >= 0.f ? 1 : 0]);
}
float weight = std::abs(dVar7);
if (weight > 0.f) {
animData->AddAdditiveAnimation(x3c8_animIds[dVar7 >= 0.f ? 1 : 0], weight, false, false);
}
}
if (dVar8 != x3e0_) {
if (std::abs(x3e0_) > 0.f && x3e0_ * dVar8 <= 0.f) {
animData->DelAdditiveAnimation(x3c8_animIds[x3e0_ <= 0.f ? 3 : 2]);
}
float weight = std::abs(dVar8);
if (weight > 0.f) {
animData->AddAdditiveAnimation(x3c8_animIds[dVar8 <= 0.f ? 3 : 2], weight, false, false);
}
}
x3d8_ = dVar7;
x3e0_ = dVar8;
}
} else {
if (x3d8_ != 0.f) {
if (animData != nullptr) { // Original code does not check
animData->DelAdditiveAnimation(x3c8_animIds[x3d8_ >= 0.f ? 1 : 0]);
}
x3d8_ = 0.f;
}
if (x3e0_ != 0.f) {
if (animData != nullptr) { // Original code does not check
animData->DelAdditiveAnimation(x3c8_animIds[x3e0_ <= 0.f ? 3 : 2]);
}
x3e0_ = 0.f;
}
}
}
void CGrenadeLauncher::UpdateStartAnimation() {
CModelData* modelData = GetModelData();
CAnimData* animData;
if (modelData == nullptr || (animData = modelData->GetAnimationData()) == nullptr || x258_started < 0 ||
x258_started > 1) {
return;
}
constexpr std::array arr{0, 3};
const auto anim = animData->GetCharacterInfo().GetPASDatabase().FindBestAnimation(
CPASAnimParmData{pas::EAnimationState::Locomotion, CPASAnimParm::FromEnum(0),
CPASAnimParm::FromEnum(arr[x258_started])},
-1);
if (anim.first > 0.f) {
animData->SetAnimation({anim.second, -1, 1.f, true}, false);
modelData->EnableLooping(true);
}
}
void CGrenadeLauncher::LaunchGrenade(CStateManager& mgr) {
CModelData* modelData = GetModelData();
CAnimData* animData;
if (modelData == nullptr || (animData = modelData->GetAnimationData()) == nullptr) {
return;
}
const auto& anim = animData->GetCharacterInfo().GetPASDatabase().FindBestAnimation(
CPASAnimParmData{pas::EAnimationState::AdditiveFlinch}, -1);
if (anim.first > 0.f) {
animData->AddAdditiveAnimation(anim.second, 1.f, false, true);
const zeus::CVector3f origin =
GetTranslation() + GetTransform().rotate(GetLocatorTransform("grenade_LCTR"sv).origin);
const zeus::CVector3f target = GrenadeTarget(mgr);
float angleOut = x2d0_data.GetGrenadeTrajectoryInfo().GetAngleMin();
float velocityOut = x2d0_data.GetGrenadeTrajectoryInfo().GetVelocityMin();
CalculateGrenadeTrajectory(target, origin, x2d0_data.GetGrenadeTrajectoryInfo(), angleOut, velocityOut);
zeus::CVector3f dist = target - origin;
dist.z() = 0.f;
const zeus::CVector3f front = GetTransform().frontVector();
if (dist.canBeNormalized()) {
dist.normalize();
} else {
dist = front;
}
constexpr float maxAngle = zeus::degToRad(45.f);
if (zeus::CVector3f::getAngleDiff(front, dist) > maxAngle) {
dist = zeus::CVector3f::slerp(front, dist, maxAngle);
}
const zeus::CVector3f look = zeus::CVector3f::slerp(dist, zeus::skUp, angleOut);
const zeus::CTransform xf = zeus::lookAt(origin, origin + look, zeus::skUp);
CModelData mData{CStaticRes{x2d0_data.GetGrenadeModelId(), GetModelData()->GetScale()}};
mgr.AddObject(new CBouncyGrenade(mgr.AllocateUniqueId(), "Bouncy Grenade"sv,
{GetAreaIdAlways(), CEntity::NullConnectionList}, xf, std::move(mData),
x350_grenadeActorParams, x2cc_parentId, x2d0_data.GetGrenadeData(), velocityOut,
x3f8_explodePlayerDistance));
}
}
} // namespace metaforce::MP1
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