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afrostalin/Snow.cpp

Created September 6, 2019 10:33
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Snow entity component for CRYENGINE 5.5 - 5.6
Raw
Snow.cpp
// Copyright (C) 2018-2019 Space Raccoon Game Studio. All rights reserved. Contacts: <business@space-raccoon.com>
// Created by AfroStalin
#pragma once
#include "StdAfx.h"
#include "Snow.h"
namespace Game
{
Cry::Entity::EventFlags CSnow::GetEventMask() const
{
return EEntityEvent::Update | EEntityEvent::Remove | EEntityEvent::Hidden;
}
void CSnow::ProcessEvent(const SEntityEvent & event)
{
switch (event.event)
{
case ENTITY_EVENT_UPDATE:
{
const Vec3 vCamPos = GetISystem()->GetViewCamera().GetPosition();
Vec3 vR = (GetEntity()->GetWorldPos() - vCamPos) / max(m_options.m_radius, 1e-3f);
// todo: only update when things have changed.
gEnv->p3DEngine->SetSnowSurfaceParams(GetEntity()->GetWorldPos(), m_options.m_radius, m_options.m_snowAmmount, m_options.m_frostAmmount, m_options.m_surfaceFreezing);
gEnv->p3DEngine->SetSnowFallParams(m_options.m_snowFlakeCount, m_options.m_snowFlakeSize, m_options.m_snowFallBrightness, m_options.m_snowFallGravityScale, m_options.m_snowFallWindScale, m_options.m_snowFallTurbulence, m_options.m_snowFallTurbulenceFreq);
break;
}
case ENTITY_EVENT_DONE:
case ENTITY_EVENT_HIDE:
{
if (gEnv && gEnv->p3DEngine)
{
static const Vec3 vZero(ZERO);
gEnv->p3DEngine->SetSnowSurfaceParams(vZero, 0, 0, 0, 0);
gEnv->p3DEngine->SetSnowFallParams(0, 0, 0, 0, 0, 0, 0);
}
break;
}
default:
break;
}
}
}
Raw
Snow.h
// Copyright (C) 2018-2019 Space Raccoon Game Studio. All rights reserved. Contacts: <business@space-raccoon.com>
// Created by AfroStalin
#pragma once
#include <CryEntitySystem/IEntityComponent.h>
#include <CryEntitySystem/IEntity.h>
namespace Game
{
class CSnow final : public IEntityComponent
{
public:
CSnow() = default;
virtual ~CSnow() {};
public:
// IEntityComponent
virtual Cry::Entity::EventFlags GetEventMask() const override;
virtual void ProcessEvent(const SEntityEvent& event) override;
// ~IEntityComponent
public:
static void ReflectType(Schematyc::CTypeDesc<CSnow>& desc)
{
desc.SetGUID("{F813DA76-9FE2-421A-9F50-3788A5FF3EC1}"_cry_guid);
desc.SetEditorCategory("Game");
desc.SetLabel("Snow");
desc.SetDescription("Snow");
desc.SetComponentFlags({ IEntityComponent::EFlags::Transform });
desc.AddMember(&CSnow::m_options, 'opt', "Options", "Options", "Snow options", CSnow::SOptions());
}
struct SOptions
{
inline bool operator==(const SOptions &rhs) const { return 0 == memcmp(this, &rhs, sizeof(rhs)); }
static void ReflectType(Schematyc::CTypeDesc<SOptions>& desc)
{
desc.SetGUID("{1D619FFE-D7A3-4C14-B1C1-6AB15605D950}"_cry_guid);
desc.AddMember(&CSnow::SOptions::m_isEnabled, 'enbl', "IsEnabled", "IsEnabled", nullptr, true);
desc.AddMember(&CSnow::SOptions::m_radius, 'rads', "Radius", "Radius", nullptr, 50.0f);
desc.AddMember(&CSnow::SOptions::m_snowAmmount, 'snam', "SnowAmmount", "SnowAmmount", nullptr, 10.0f);
desc.AddMember(&CSnow::SOptions::m_frostAmmount, 'frst', "FrostAmmount", "FrostAmmount", nullptr, 1.0f);
desc.AddMember(&CSnow::SOptions::m_surfaceFreezing, 'frs0', "SurfaceFreezing", "SurfaceFreezing", nullptr, 1.0f);
desc.AddMember(&CSnow::SOptions::m_snowFlakeCount, 'flkc', "SnowFlakeCount", "SnowFlakeCount", nullptr, 100);
desc.AddMember(&CSnow::SOptions::m_snowFlakeSize, 'flk0', "SnowFlakeSize", "SnowFlakeSize", nullptr, 1.0f);
desc.AddMember(&CSnow::SOptions::m_snowFallBrightness, 'flbr', "SnowFallBrightness", "SnowFallBrightness", nullptr, 1.0f);
desc.AddMember(&CSnow::SOptions::m_snowFallGravityScale, 'flgs', "SnowFallGravityScale", "SnowFallGravityScale", nullptr, 0.1f);
desc.AddMember(&CSnow::SOptions::m_snowFallWindScale, 'wnsl', "SnowFallWindScale", "SnowFallWindScale", nullptr, 0.1f);
desc.AddMember(&CSnow::SOptions::m_snowFallTurbulence, 'fltb', "SnowFallTurbulence", "SnowFallTurbulence", nullptr, 0.5f);
desc.AddMember(&CSnow::SOptions::m_snowFallTurbulenceFreq, 'ftbf', "SnowFallTurbulenceFreq", "SnowFallTurbulenceFreq", nullptr, 0.1f);
}
bool m_isEnabled = true;
float m_radius = 50.0f;
float m_snowAmmount = 10.0f;
float m_frostAmmount = 1.0f;
float m_surfaceFreezing = 1.0f;
int m_snowFlakeCount = 100;
float m_snowFlakeSize = 1.0f;
float m_snowFallBrightness = 1.0f;
float m_snowFallGravityScale = 0.1f;
float m_snowFallWindScale = 0.1f;
float m_snowFallTurbulence = 0.5f;
float m_snowFallTurbulenceFreq = 0.1f;
};
private:
SOptions m_options;
};
}
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