Subscribed ImGui to MouseScroll event

include/Engine/Rendering/ImGuiRenderPass.h

@@ -5,6 +5,7 @@
 #include "../Core/EMousePress.h"
 #include "../Core/EMouseRelease.h"
 #include "../Core/EMouseMove.h"
+#include "../Core/EMouseScroll.h"
 #include "../Core/EKeyDown.h"
 #include "../Core/EKeyUp.h"
 #include "../Core/EKeyboardChar.h"
@@ -23,6 +24,7 @@ private:
 
     GLFWwindow* g_Window;
     double g_Time = 0.0;
+    float g_MouseWheel = 0.f;
     GLuint g_FontTexture;
     int g_ShaderHandle;
     int g_VertHandle;
@@ -42,6 +44,8 @@ private:
     bool OnMouseRelease(const Events::MouseRelease& e);
     EventRelay<ImGuiRenderPass, Events::MouseMove> m_EMouseMove;
     bool OnMouseMove(const Events::MouseMove& e);
+    EventRelay<ImGuiRenderPass, Events::MouseScroll> m_EMouseScroll;
+    bool OnMouseScroll(const Events::MouseScroll& e);
     EventRelay<ImGuiRenderPass, Events::KeyDown> m_EKeyDown;
     bool OnKeyDown(const Events::KeyDown& e);
     EventRelay<ImGuiRenderPass, Events::KeyUp> m_EKeyUp;

src/Engine/Rendering/ImGuiRenderPass.cpp

@@ -43,6 +43,7 @@ ImGuiRenderPass::ImGuiRenderPass(IRenderer* renderer, EventBroker* eventBroker)
     EVENT_SUBSCRIBE_MEMBER(m_EMousePress, &ImGuiRenderPass::OnMousePress);
     EVENT_SUBSCRIBE_MEMBER(m_EMouseRelease, &ImGuiRenderPass::OnMouseRelease);
     EVENT_SUBSCRIBE_MEMBER(m_EMouseMove, &ImGuiRenderPass::OnMouseMove);
+    EVENT_SUBSCRIBE_MEMBER(m_EMouseScroll, &ImGuiRenderPass::OnMouseScroll);
     EVENT_SUBSCRIBE_MEMBER(m_EKeyDown, &ImGuiRenderPass::OnKeyDown);
     EVENT_SUBSCRIBE_MEMBER(m_EKeyUp, &ImGuiRenderPass::OnKeyUp);
     EVENT_SUBSCRIBE_MEMBER(m_EKeyboardChar, &ImGuiRenderPass::OnKeyboardChar);
@@ -66,6 +67,9 @@ void ImGuiRenderPass::Update(double dt)
     io.KeyShift = glfwGetKey(g_Window, GLFW_KEY_LEFT_SHIFT) || glfwGetKey(g_Window, GLFW_KEY_RIGHT_SHIFT);
     io.KeyAlt = glfwGetKey(g_Window, GLFW_KEY_LEFT_ALT) || glfwGetKey(g_Window, GLFW_KEY_RIGHT_ALT);
 
+    io.MouseWheel = g_MouseWheel;
+    g_MouseWheel = 0;
+
     ImGui::NewFrame();
 
     static float val = 0.f;
@@ -184,6 +188,12 @@ bool ImGuiRenderPass::OnMouseMove(const Events::MouseMove& e)
     return true;
 }
 
+bool ImGuiRenderPass::OnMouseScroll(const Events::MouseScroll& e)
+{
+    g_MouseWheel += (float)e.DeltaY;
+    return true;
+}
+
 bool ImGuiRenderPass::OnKeyDown(const Events::KeyDown& e)
 {
     ImGuiIO& io = ImGui::GetIO();