BF2 Internals: Difference between revisions

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Line 53: Line 53:
; ServerLogoManager
; ServerLogoManager
; ModInfo
; ModInfo
Besides these, the rendering module(RendDX9.dll) also registers the following classes:
; SwiffRenderer
; Terrain
; LightManager
; GeometryTemplateManager
; StaticMeshRenderer
; SkinnedMeshRenderer
; ParticleSystemManager
; HemiMapManager
; DecalManager
; DecalShadowManager
; RoadCompiledRenderer
; RoadEditableRenderer
; NametagManager
; SkyDome
; UndergrowthSystem
; LightingManager
; WeatherManager
; RainManager
; RenderView
; EnvMapManager

Revision as of 20:42, 17 June 2018

The BF2 engine has been written in C++ and also make heavy use of STL.

Reference Counting

A lot of the internal components of the game use intrusive reference counting through inheritance. The base class would look something like this:

class RefCounted {
public:
    RefCounted() : m_refCount(1) {}
    virtual int addRef() {
        return ++m_refCount;
    }
    
    virtual int getRefCount() {
        return m_refCount;
    }

    virtual int release() {
        if (--m_refCount == 0) {
            delete (RefCounted*)this;
        }
        return m_refCount;
    }
private:
    int m_refCount;
}

ClassManager

The program contains a single ClassManager instance which is used to dynamically access different subsystems within the game. These subsystems are registered via a string identifier(class name), an instance pointer, the class id and another unknown integer, they can then later be accessed using the class name. The following classes are registered in BF2.exe:

GameServerSettings
HudInformationLayer
DistributedLightRenderer
LocalProfileManager
ProfileManager
RankManager
ClanManager
NewsManager
AutoPatch
Persistence
MenuTeamManager
GlobalSettings
VideoSettings
AudioSettings
ControlSettings
GeneralSettings
HapticSettings
ServerBrowserManager
SwiffHost
DemoLibrary
ServerLogoManager
ModInfo

Besides these, the rendering module(RendDX9.dll) also registers the following classes:

SwiffRenderer
Terrain
LightManager
GeometryTemplateManager
StaticMeshRenderer
SkinnedMeshRenderer
ParticleSystemManager
HemiMapManager
DecalManager
DecalShadowManager
RoadCompiledRenderer
RoadEditableRenderer
NametagManager
SkyDome
UndergrowthSystem
LightingManager
WeatherManager
RainManager
RenderView
EnvMapManager