feat(ui): add CGWorldFrame::OnFrameSizeChanged

lib/typhoon

@@ -1 +1 @@
-Subproject commit 4ba7e0a6c3836254daf97bab159807fae6cab039
+Subproject commit 1e5366bbc6935e3363abf5921f0be12f902e790a

src/ui/game/CGCamera.cpp

@@ -0,0 +1,97 @@
+#include "ui/game/CGCamera.hpp"
+#include "ui/game/Types.hpp"
+#include "console/CVar.hpp"
+#include "world/World.hpp"
+#include <storm/String.hpp>
+#include <tempest/Math.hpp>
+#include <algorithm>
+
+static CVar* s_cameraView;
+
+CGCamera::CameraViewData CGCamera::s_cameraViewDataDefault[MAX_CAMERA_VIEWS] = {
+    {  "0.0",   "0.0", "0.0" },     // VIEW_FIRST_PERSON
+    {  "0.0",   "0.0", "0.0" },     // VIEW_THIRD_PERSON_A
+    {  "5.55", "10.0", "0.0" },     // VIEW_THIRD_PERSON_B
+    {  "5.55", "20.0", "0.0" },     // VIEW_THIRD_PERSON_C
+    { "13.88", "30.0", "0.0" },     // VIEW_THIRD_PERSON_D
+    { "13.88", "10.0", "0.0" },     // VIEW_THIRD_PERSON_E
+    {  "0.0",   "0.0", "0.0" },     // VIEW_COMMENTATOR
+    {  "5.0",  "10.0", "0.0" },     // VIEW_BARBER_SHOP
+};
+
+namespace {
+
+bool ValidateCameraView(CVar* var, const char* oldValue, const char* value, void* arg) {
+    auto view = SStrToFloat(value);
+    auto min = static_cast<float>(VIEW_FIRST_PERSON);
+    auto max = static_cast<float>(VIEW_BARBER_SHOP);
+
+    if (view >= min && view <= max) {
+        return true;
+    }
+
+    // TODO ConsoleWriteA("Value out of range (%f - %f)\n", DEFAULT_COLOR, min, max);
+
+    return false;
+}
+
+}
+
+CGCamera::CGCamera() : CSimpleCamera(CWorld::GetNearClip(), CWorld::GetFarClip(), 90.0f * CMath::DEG2RAD) {
+    this->m_relativeTo = 0;
+
+    this->m_view = s_cameraView->GetInt();
+
+    this->m_distance = SStrToFloat(CGCamera::s_cameraViewDataDefault[this->m_view].m_distance);
+    this->m_yaw = 0.0f;
+    this->m_pitch = SStrToFloat(CGCamera::s_cameraViewDataDefault[this->m_view].m_pitch);
+    this->m_roll = 0.0f;
+
+    this->m_fovOffset = 0.0f;
+}
+
+float CGCamera::FOV() const {
+    // Clamp offset-adjusted FOV between 0pi and 1pi
+    return std::min(std::max(this->m_fov + this->m_fovOffset, 0.0f), CMath::PI);
+}
+
+C3Vector CGCamera::Forward() const {
+    if (this->m_relativeTo) {
+        return this->CSimpleCamera::Forward() * this->ParentToWorld();
+    }
+
+    return this->CSimpleCamera::Forward();
+}
+
+C33Matrix CGCamera::ParentToWorld() const {
+    // TODO
+    return {};
+}
+
+C3Vector CGCamera::Right() const {
+    if (this->m_relativeTo) {
+        return this->CSimpleCamera::Right() * this->ParentToWorld();
+    }
+
+    return this->CSimpleCamera::Right();
+}
+
+void CGCamera::SetupWorldProjection(const CRect& projRect) {
+    this->SetGxProjectionAndView(projRect);
+}
+
+C3Vector CGCamera::Up() const {
+    if (this->m_relativeTo) {
+        return this->CSimpleCamera::Up() * this->ParentToWorld();
+    }
+
+    return this->CSimpleCamera::Up();
+}
+
+void CameraRegisterCVars() {
+    // TODO
+
+    s_cameraView = CVar::Register("cameraView", nullptr, 0x10, "2", &ValidateCameraView, DEFAULT);
+
+    // TODO
+}

src/ui/game/CGCamera.hpp

@@ -0,0 +1,48 @@
+#ifndef UI_GAME_C_G_CAMERA_HPP
+#define UI_GAME_C_G_CAMERA_HPP
+
+#include "ui/simple/CSimpleCamera.hpp"
+#include "util/GUID.hpp"
+
+class CGCamera : public CSimpleCamera {
+    public:
+        // Public structs
+        struct CameraViewData {
+            const char* m_distance;
+            const char* m_pitch;
+            const char* m_yaw;
+        };
+
+        // Public static variables
+        static CameraViewData s_cameraViewDataDefault[];
+
+        // Virtual public member functions
+        virtual ~CGCamera() = default;
+        virtual float FOV() const;
+        virtual C3Vector Forward() const;
+        virtual C3Vector Right() const;
+        virtual C3Vector Up() const;
+
+        // Public member functions
+        CGCamera();
+        C33Matrix ParentToWorld() const;
+        void SetupWorldProjection(const CRect& projRect);
+
+    private:
+        // Private member variables
+        // TODO
+        WOWGUID m_relativeTo;
+        // TODO
+        int32_t m_view;
+        // TODO
+        float m_distance;
+        float m_yaw;
+        float m_pitch;
+        float m_roll;
+        // TODO
+        float m_fovOffset;
+};
+
+void CameraRegisterCVars();
+
+#endif

src/ui/game/CGGameUI.cpp

@@ -8,6 +8,7 @@
 #include "ui/game/ActionBarScript.hpp"
 #include "ui/game/BattlefieldInfoScript.hpp"
 #include "ui/game/BattlenetUI.hpp"
+#include "ui/game/CGCamera.hpp"
 #include "ui/game/CGCharacterModelBase.hpp"
 #include "ui/game/CGCooldown.hpp"
 #include "ui/game/CGDressUpModelFrame.hpp"
@@ -284,4 +285,8 @@ void CGGameUI::RegisterGameCVars() {
     CVar::Register("fullSizeFocusFrame", "Increases the size of the focus frame to that of the target frame", 0x20, "0", nullptr, GAME);
 
     // TODO
+
+    CameraRegisterCVars();
+
+    // TODO
 }

src/ui/game/CGWorldFrame.cpp

@@ -1,6 +1,8 @@
 #include "ui/game/CGWorldFrame.hpp"
+#include "gx/Coordinate.hpp"
 #include "gx/Shader.hpp"
 #include "gx/Transform.hpp"
+#include "ui/game/CGCamera.hpp"
 #include "ui/game/PlayerName.hpp"
 #include <storm/Memory.hpp>
 #include <tempest/Matrix.hpp>
@@ -46,6 +48,10 @@ CGWorldFrame::CGWorldFrame(CSimpleFrame* parent) : CSimpleFrame(parent) {
     this->EnableEvent(SIMPLE_EVENT_MOUSEWHEEL, -1);
 
     // TODO
+
+    this->m_camera = STORM_NEW(CGCamera);
+
+    // TODO
 }
 
 void CGWorldFrame::OnFrameRender(CRenderBatch* batch, uint32_t layer) {
@@ -56,6 +62,29 @@ void CGWorldFrame::OnFrameRender(CRenderBatch* batch, uint32_t layer) {
     }
 }
 
+void CGWorldFrame::OnFrameSizeChanged(const CRect& rect) {
+    this->CSimpleFrame::OnFrameSizeChanged(rect);
+
+    // Screen rect (DDC)
+    this->m_screenRect.minX = std::max(this->m_rect.minX, 0.0f);
+    this->m_screenRect.minY = std::max(this->m_rect.minY, 0.0f);
+    this->m_screenRect.maxX = std::min(this->m_rect.maxX, NDCToDDCWidth(1.0f));
+    this->m_screenRect.maxY = std::min(this->m_rect.maxY, NDCToDDCHeight(1.0f));
+
+    // Camera aspect ratio
+    if (this->m_camera) {
+        this->m_camera->SetScreenAspect(this->m_screenRect);
+    }
+
+    // Viewport (NDC)
+    DDCToNDC(this->m_rect.minX, this->m_rect.minY, &this->m_viewport.minX, &this->m_viewport.minY);
+    DDCToNDC(this->m_rect.maxX, this->m_rect.maxY, &this->m_viewport.maxX, &this->m_viewport.maxY);
+    this->m_viewport.minX = std::max(this->m_viewport.minX, 0.0f);
+    this->m_viewport.minY = std::max(this->m_viewport.minY, 0.0f);
+    this->m_viewport.maxX = std::min(this->m_viewport.maxX, 1.0f);
+    this->m_viewport.maxY = std::min(this->m_viewport.maxY, 1.0f);
+}
+
 void CGWorldFrame::OnWorldRender() {
     // TODO
 }

src/ui/game/CGWorldFrame.hpp

@@ -4,6 +4,8 @@
 #include "ui/simple/CSimpleFrame.hpp"
 #include <cstdint>
 
+class CGCamera;
+
 class CGWorldFrame : public CSimpleFrame {
     public:
         // Static variables
@@ -15,11 +17,22 @@ class CGWorldFrame : public CSimpleFrame {
 
         // Virtual member functions
         virtual void OnFrameRender(CRenderBatch* batch, uint32_t layer);
+        // TODO
+        virtual void OnFrameSizeChanged(const CRect& rect);
 
         // Member functions
         CGWorldFrame(CSimpleFrame* parent);
         void OnWorldRender();
         void OnWorldUpdate();
+
+    private:
+        // Private member variables
+        // TODO
+        CRect m_screenRect;
+        CRect m_viewport;
+        // TODO
+        CGCamera* m_camera;
+        // TODO
 };
 
 #endif

src/ui/game/Types.hpp

@@ -13,4 +13,16 @@ enum SCRIPTEVENT {
     // TODO
 };
 
+enum CAMERA_VIEW {
+    VIEW_FIRST_PERSON       = 0,
+    VIEW_THIRD_PERSON_A     = 1,
+    VIEW_THIRD_PERSON_B     = 2,
+    VIEW_THIRD_PERSON_C     = 3,
+    VIEW_THIRD_PERSON_D     = 4,
+    VIEW_THIRD_PERSON_E     = 5,
+    VIEW_COMMENTATOR        = 6,
+    VIEW_BARBER_SHOP        = 7,
+    MAX_CAMERA_VIEWS,
+};
+
 #endif

src/ui/simple/CSimpleCamera.cpp

@@ -104,10 +104,6 @@ void CSimpleCamera::SetFieldOfView(float fov) {
     this->m_fov = fov;
 }
 
-void CSimpleCamera::SetNearZ(float nearZ) {
-    this->m_nearZ = nearZ;
-}
-
 void CSimpleCamera::SetGxProjectionAndView(const CRect& projRect) {
     // Projection
 
@@ -127,6 +123,14 @@ void CSimpleCamera::SetGxProjectionAndView(const CRect& projRect) {
     GxXformSetView(viewMat);
 }
 
+void CSimpleCamera::SetNearZ(float nearZ) {
+    this->m_nearZ = nearZ;
+}
+
+void CSimpleCamera::SetScreenAspect(const CRect& screenRect) {
+    this->m_aspect = (screenRect.maxX - screenRect.minX) / (screenRect.maxY - screenRect.minY);
+}
+
 C3Vector CSimpleCamera::Up() const {
     return { this->m_facing.c0, this->m_facing.c1, this->m_facing.c2 };
 }

src/ui/simple/CSimpleCamera.hpp

@@ -25,6 +25,7 @@ class CSimpleCamera {
         void SetFieldOfView(float fov);
         void SetGxProjectionAndView(const CRect& projRect);
         void SetNearZ(float nearZ);
+        void SetScreenAspect(const CRect& screenRect);
 
     protected:
         // Protected member variables