2DFX Effects API

Client/game_sa/C2DEffectSA.h

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+/*****************************************************************************
+ *
+ *  PROJECT:     Multi Theft Auto
+ *  LICENSE:     See LICENSE in the top level directory
+ *  FILE:        game_sa/C2DEffectSA.h
+ *  PURPOSE:     Header file for 2dfx class
+ *
+ *  Multi Theft Auto is available from https://www.multitheftauto.com/
+ *
+ *****************************************************************************/
+
+#pragma once
+#include "game/C2DEffect.h"
+#include "C2DEffectSAInterface.h"
+#include <variant>
+
+#define ARRAY_2DFXInfoStore 0xB4C2D8 // C2dfxInfoStore d2fxModels
+
+#define FUNC_C2DEffect_Shutdown 0x4C57D0
+#define FUNC_PushCurrentTxd     0x7316A0
+#define FUNC_FindTxdSlot        0x731850
+#define FUNC_SetCurrentTxd      0x7319C0
+#define FUNC_PopCurrentTxd      0x7316B0
+
+// Escalators stuff
+#define ARRAY_CEscalators         0xC6E9A8
+#define NUM_MAX_ESCALATORS        32
+#define FUNC_CEscalator_SwitchOff 0x717860
+
+// fx stuff
+#define FUNC_Fx_c_DestroyEntityFx 0x4A1280
+#define FUNC_Fx_c_CreateEntityFx  0x4A11E0
+#define VAR_G_Fx                  0xA9AE00
+#define OFFSET_FxSystem_Entities  0xC
+#define OFFSET_FxSystem_Link_Prev 0x4
+
+class C2DEffectSA : public C2DEffect
+{
+public:
+    C2DEffectSA(C2DEffectSAInterface* effectInterface, std::uint32_t modelID);
+    ~C2DEffectSA() = default;
+
+    C2DEffectSAInterface* GetInterface() noexcept { return m_effectInterface; }
+    e2dEffectType GetEffectType() override { return m_effectInterface ? m_effectInterface->type : e2dEffectType::NONE; }
+
+    bool IsValidLight() const noexcept { return m_effectInterface && m_effectInterface->type == e2dEffectType::LIGHT; };
+    bool IsValidRoadsign() const noexcept { return m_effectInterface && m_effectInterface->type == e2dEffectType::ROADSIGN; }
+    bool IsValidEscalator() const noexcept { return m_effectInterface && m_effectInterface->type == e2dEffectType::ESCALATOR; }
+    bool IsValidParticle() const noexcept { return m_effectInterface && m_effectInterface->type == e2dEffectType::PARTICLE; }
+
+    void Destroy() const;
+
+    void SetPosition(const CVector& position) override;
+    CVector& GetPosition() override;
+
+    // Light properties
+    // Set
+    void SetCoronaFarClip(float clip) override;
+    void SetCoronaPointLightRange(float range) override;
+    void SetCoronaSize(float size) override;
+    void SetShadowSize(float size) override;
+    void SetShadowMultiplier(std::uint8_t multiplier) override;
+    void SetCoronaShowMode(e2dCoronaFlashType showMode) override;
+    void SetCoronaReflectionsEnabled(bool enable) override;
+    void SetCoronaFlareType(std::uint8_t flareType) override;
+    void SetLightFlags(std::uint16_t flags) override;
+    void SetShadowDistance(std::int8_t distance) override;
+    void SetCoronaOffsets(const CVector& offsets) override;
+    void SetCoronaColor(const RwColor& color) override;
+    void SetCoronaTexture(const std::string& name) override;
+    void SetShadowTexture(const std::string& name) override;
+
+    // Get
+    float GetCoronaFarClip() const override { return IsValidLight() ? m_effectInterface->effect.light.coronaFarClip : 0.0f; }
+    float GetCoronaPointLightRange() const override { return IsValidLight() ? m_effectInterface->effect.light.pointLightRange : 0.0f; }
+    float GetCoronaSize() const override { return IsValidLight() ? m_effectInterface->effect.light.coronaSize : 0.0f; }
+    float GetShadowSize() const override { return IsValidLight() ? m_effectInterface->effect.light.shadowSize : 0.0f; }
+    std::uint8_t GetShadowMultiplier() const override { return IsValidLight() ? m_effectInterface->effect.light.shadowColorMultiplier : 0; }
+    e2dCoronaFlashType GetCoronaShowMode() const override { return IsValidLight() ? m_effectInterface->effect.light.coronaFlashType : e2dCoronaFlashType::UNUSED; }
+    bool GetCoronaReflectionsEnabled() const override { return IsValidLight() ? m_effectInterface->effect.light.coronaEnableReflection : false; }
+    std::uint8_t       GetCoronaFlareType() const override { return IsValidLight() ? m_effectInterface->effect.light.coronaFlareType : 0; }
+    std::uint16_t      GetLightFlags() const override { return IsValidLight() ? m_effectInterface->effect.light.flags : 0; }
+    std::int8_t        GetShadowDistance() const override { return IsValidLight() ? m_effectInterface->effect.light.shadowZDistance : 0; }
+    CVector             GetCoronaOffsets() const override;
+    RwColor            GetCoronaColor() const override { return IsValidLight() ? m_effectInterface->effect.light.color : RwColor{0,0,0,0}; }
+    std::string        GetCoronaTexture() const override { return IsValidLight() ? (m_effectInterface->effect.light.coronaTex ? m_effectInterface->effect.light.coronaTex->name : "") : ""; }
+    std::string GetShadowTexture() const override { return IsValidLight() ? (m_effectInterface->effect.light.shadowTex ? m_effectInterface->effect.light.shadowTex->name : "") : ""; }
+
+    // Particle properties
+    // Set
+    void SetParticleName(const std::string& name) override;
+
+    // Get
+    std::string GetParticleName() const override { return IsValidParticle() ? (m_effectInterface->effect.particle.szName ? m_effectInterface->effect.particle.szName : "") : ""; }
+
+    // Roadsign properties
+    // Set
+    void SetRoadsignSize(const RwV2d& size) override;
+    void SetRoadsignRotation(const RwV3d& rotation) override;
+    void SetRoadsignFlags(std::uint8_t flags) override;
+    void SetRoadsignText(const std::string& text, std::uint8_t line) override;
+
+    // Get
+    RwV2d&        GetRoadsignSize() override;
+    RwV3d&        GetRoadsignRotation() override;
+    std::uint16_t GetRoadsignFlags() const override { return IsValidRoadsign() ? m_effectInterface->effect.roadsign.flags : 0; }
+    std::string   GetRoadsignText() const override;
+
+    // Escalator properties
+    // Set
+    void SetEscalatorBottom(const RwV3d& bottom) override;
+    void SetEscalatorTop(const RwV3d& top) override;
+    void SetEscalatorEnd(const RwV3d& end) override;
+    void SetEscalatorDirection(std::uint8_t direction) override;
+
+    // Get
+    RwV3d&       GetEscalatorBottom() override;
+    RwV3d&       GetEscalatorTop() override;
+    RwV3d&       GetEscalatorEnd() override;
+    std::uint8_t GetEscalatorDirection() const override { return IsValidEscalator() ? m_effectInterface->effect.escalator.direction : 0; }
+
+    static RpAtomic*     Roadsign_CreateAtomic(const RwV3d& position, const RwV3d& rotation, float sizeX, float sizeY, std::uint32_t numLines, char* line1, char* line2, char* line3, char* line4, std::uint32_t numLetters, std::uint8_t palleteID);
+    static std::uint32_t Roadsign_GetPalleteIDFromFlags(std::uint8_t flags);
+    static std::uint32_t Roadsign_GetNumLettersFromFlags(std::uint8_t flags);
+    static std::uint32_t Roadsign_GetNumLinesFromFlags(std::uint8_t flags);
+    static void Roadsign_DestroyAtomic(C2DEffectSAInterface* effect);
+
+    static C2DEffectSAInterface* CreateCopy(C2DEffectSAInterface* effect);
+
+    static void Shutdown(C2DEffectSAInterface* effect);
+    static void SafeDelete2DFXEffect(C2DEffectSAInterface* effect);
+    static void PrepareTexturesForLightEffect(RwTexture*& coronaTex, RwTexture*& shadowTex, const char* coronaName, const char* shadowName, bool removeIfExist);
+
+public:
+    static int effect2dPluginOffset;
+
+private:
+    C2DEffectSAInterface* m_effectInterface;
+    std::uint32_t         m_model;
+
+};

Client/game_sa/C2DEffectSAInterface.h

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+/*****************************************************************************
+ *
+ *  PROJECT:     Multi Theft Auto
+ *  LICENSE:     See LICENSE in the top level directory
+ *  FILE:        game_sa/C2DEffectSAInterface.h
+ *  PURPOSE:     Header file for 2dfx game interface layer
+ *
+ *  Multi Theft Auto is available from https://www.multitheftauto.com/
+ *
+ *****************************************************************************/
+#pragma once
+
+#include "game/RenderWare.h"
+#include "game/CModelInfo.h"
+#include "game/C2DEffects.h"
+#include "CObjectSA.h"
+
+struct t2dEffectLight
+{
+    RwColor color;
+    float   coronaFarClip;
+    float   pointLightRange;
+    float   coronaSize;
+    float   shadowSize;
+
+    // Flags
+    union
+    {
+        struct
+        {
+            // Flags 1
+            std::uint16_t checkObstacles : 1;
+            std::uint16_t fogType : 1;
+            std::uint16_t fogType2 : 1;
+            std::uint16_t withoutCorona : 1;
+            std::uint16_t onlyLongDistance : 1;
+            std::uint16_t atDay : 1;
+            std::uint16_t atNight : 1;
+            std::uint16_t blinking1 : 1;
+
+            // Flags 2
+            std::uint16_t onlyFromBelow : 1;
+            std::uint16_t blinking2 : 1;
+            std::uint16_t updateHeightAboveGround : 1;
+            std::uint16_t checkDirection : 1;
+            std::uint16_t blinking3 : 1;
+        };
+
+        std::uint16_t flags;
+    };
+
+    e2dCoronaFlashType coronaFlashType;            // show mode
+    bool               coronaEnableReflection;
+    std::uint8_t       coronaFlareType;            // lens flare effect 0 - off, 1 - on
+    std::uint8_t       shadowColorMultiplier;
+    std::int8_t        shadowZDistance;
+    std::int8_t        offsetX;
+    std::int8_t        offsetY;
+    std::int8_t        offsetZ;
+    std::uint8_t       field_1E[2];
+    RwTexture*         coronaTex;
+    RwTexture*         shadowTex;
+    std::int32_t       field_28;
+    std::int32_t       field_2C;
+};
+
+// The particle effect name is an entry in effects.fxp
+struct t2dEffectParticle
+{
+    char szName[24];
+};
+
+// It`s used for spawning peds (Like on ticketbooth, Windows of shops, Blackjack-tables)
+// It includes information about the External Script ped is going to use when spawned, it`s facing angle and it`s behaviour
+struct t2dEffectAttractor
+{
+    RwV3d            queueDirection;
+    RwV3d            useDirection;
+    RwV3d            forwardDirection;
+    e2dAttractorType attractorType;
+    std::uint8_t     pedExistingProbability;
+    std::uint8_t     field_26;
+    std::uint8_t     flags;
+    char             szScriptName[8];
+};
+
+// entry-exit markers similar to ipl version
+struct t2dEffectEnex
+{
+    float        enterAngle;            // Rotation angle enter-marker (relative to the object)
+    RwV3d        size;                  // The radius of the approximation to the marker
+    RwV3d        exitPosn;              // The position of exit-marker (offset relative to enter position)
+    float        exitAngle;             // angle of rotation exit-marker (relative to the object)
+    std::int16_t interiorId;
+    std::uint8_t flags1;            // Unknown flags
+    std::uint8_t skyColor;
+    char         szInteriorName[8];
+    std::uint8_t timeOn;
+    std::uint8_t timeOff;
+
+    // Flags 2
+    union
+    {
+        struct
+        {
+            std::uint8_t unknown1 : 1;
+            std::uint8_t unknown2 : 1;
+            std::uint8_t timedEffect : 1;
+        };
+        std::uint8_t flags2;
+    };
+
+    std::uint8_t field_2F;
+};
+
+struct t2dEffectRoadsign
+{
+    RwV2d size;
+    RwV3d rotation;
+
+    // Flags
+    union
+    {
+        struct
+        {
+            std::uint8_t numOfLines : 2;
+            std::uint8_t symbolsPerLine : 2;
+            std::uint8_t textColor : 2;
+        };
+
+        std::uint8_t flags;
+    };
+
+    std::uint8_t field_16[2];
+    char*        text;            // size 64
+    RpAtomic*    atomic;
+};
+
+// Section defines a place where peds can cover during firefights
+struct t2dEffectCoverPoint
+{
+    RwV2d        direction;
+    std::uint8_t type;
+    std::uint8_t field_9[3];
+};
+
+// Example in vgseesc01.dff
+struct t2dEffectEscalator
+{
+    RwV3d        bottom;
+    RwV3d        top;
+    RwV3d        end;                  // Z pos, matches top Z if escalator goes up, bottom Z if it goes down
+    std::uint8_t direction;            // 0 - down, 1 - up
+    std::uint8_t field_25[3];
+};
+
+// Example in kb_bandit_u.dff
+// Used to determine additional coordinates that can be used in scripts
+struct t2dEffectTriggerPoint
+{
+    std::int32_t id;
+};
+
+// Some interiors stuff, probably unused?
+struct t2dEffectFurniture
+{
+    std::uint8_t type;
+    std::int8_t  groupId;
+    // size
+    std::uint8_t width;
+    std::uint8_t depth;
+    std::uint8_t height;
+    // doors
+    std::int8_t door;
+    std::int8_t l_door[2];            // start, end
+    std::int8_t r_door[2];            // start, end
+    std::int8_t t_door[2];            // start, end
+    // windows
+    std::int8_t l_window[2];            // start, end
+    std::int8_t r_window[2];            // start, end
+    std::int8_t t_window[2];            // start, end
+    // something like offsets?
+    std::int8_t goLeft[3];              // x,y,z?
+    std::int8_t goBottom[3];            // x,y,z?
+    std::int8_t goWidth[3];             // x,y,z?
+    std::int8_t goDepth[3];             // x,y,z?
+
+    std::uint8_t seed;
+    std::uint8_t status;
+    float        rotation;
+};
+
+union t2dEffectUnion
+{
+    t2dEffectLight        light;
+    t2dEffectParticle     particle;
+    t2dEffectAttractor    attractor;
+    t2dEffectEnex         enex;
+    t2dEffectRoadsign     roadsign;
+    t2dEffectCoverPoint   coverPoint;
+    t2dEffectEscalator    escalator;
+    t2dEffectTriggerPoint triggerPoint;            // slot machine, k.a.a.c gates, basketball hoop
+    t2dEffectFurniture    furniture;
+};
+
+class C2DEffectSAInterface
+{
+public:
+    RwV3d         position;
+    e2dEffectType type;
+    std::uint8_t  field_D[3];
+
+    t2dEffectUnion effect;
+};
+
+class C2DEffectInfoStoreSAInterface
+{
+public:
+    std::uint32_t        objCount;
+    C2DEffectSAInterface objects[100];
+};
+
+class C2DEffectPluginDataSAInterface
+{
+public:
+    std::uint32_t        count;
+    C2DEffectSAInterface objects[];
+};
+
+class CEscalatorSAInterface
+{
+public:
+    RwV3d               startPos;
+    RwV3d               bottomPos;
+    RwV3d               topPos;
+    RwV3d               endPos;
+    std::uint8_t        rotation[72];            // CMatrixSAInterface
+    bool                exist;
+    bool                objectCreated;
+    bool                moveDown;
+    std::uint8_t        field_7B;            // pad
+    std::int32_t        numIntermediatePlanes;
+    std::uint32_t       numBottomPlanes;
+    std::uint32_t       numTopPlanes;
+    std::uint8_t        field_88[8];            // unused field
+    RwSphere            bounding;
+    float               currentPosition;
+    CEntitySAInterface* entity;
+    CObjectSAInterface* objects[42];
+};