FPS Control working, minor UI cleanup.

src/render_utils.c

@@ -23,6 +23,14 @@ inline void CameraState_Init(CameraState* camera_state) {
   camera_state->up[1] = 1.f;
   camera_state->up[2] = 0.f;
 
+  camera_state->pos[0] = 0.f;
+  camera_state->pos[1] = 0.f;
+  camera_state->pos[2] = 0.f;
+
+  camera_state->vel[0] = 0.f;
+  camera_state->vel[1] = 0.f;
+  camera_state->vel[2] = 0.f;
+
   memcpy(&camera_state->mtxView, &mtx_identity, sizeof(camera_state->mtxView));
   CameraState_CalcFromMatrix(camera_state, &camera_state->mtxView);
 }
@@ -93,9 +101,9 @@ inline void CameraState_Update(
 
   camera_state->heading -= dt * mouse_dx * mouse_sensitivity * M_PI / 180.f;
   if (camera_state->heading < -M_PI) {
-    camera_state->heading += M_PI;
+    camera_state->heading += M_PI * 2.f;
   } else if (camera_state->heading > M_PI) {
-    camera_state->heading -= M_PI;
+    camera_state->heading -= M_PI * 2.f;
   }
   camera_state->pitch += dt * mouse_dy * mouse_sensitivity * M_PI / 180.f;
   if (camera_state->pitch < -M_PI * 0.49) {

src/simulator.cc

@@ -118,8 +118,6 @@ void simulator_reset() {
 void simulator_gui() {
   ZoneScoped;
 
-  ImGui::Begin("Simulator");
-
   sStateHistoryCurrent =
       std::min(sStateHistoryCurrent, sthstry_get_num_states(sStateHistory) - 1);
 
@@ -184,8 +182,6 @@ void simulator_gui() {
     ImGui::PopID();
     body.updateCollisionShapes();
   }
-
-  ImGui::End();
 }
 
 void simulator_update(double dt) {

src/vissim.cc

@@ -4,10 +4,10 @@
 // clang-format on
 
 #include <GLFW/glfw3.h>
-#include <csignal>
 #include <unistd.h>
 
 #include <Tracy.hpp>
+#include <csignal>
 #include <cstdio>
 #include <iostream>
 
@@ -20,10 +20,10 @@
 #define IMGUI_DEFINE_MATH_OPERATORS
 #endif
 #include "imgui_internal.h"
+#include "render_utils.h"
 #include "simulator.h"
 #include "srender.h"
 #include "utils.h"
-#include "render_utils.h"
 
 GLFWwindow* gWindow = nullptr;
 GuiInputState* gGuiInputState = nullptr;
@@ -64,6 +64,14 @@ bool gGizmoEnabled = true;
 enum ControlMode { ControlModeNone = 0, ControlModeFirstPersonView = 1 };
 ControlMode gControlMode = ControlModeNone;
 
+struct Dialogs {
+  bool mCameraDialog = false;
+  bool mImGuiDemo = false;
+  bool mSimulator = false;
+  bool mImGuizmoTransform = false;
+};
+Dialogs* gDialogs = nullptr;
+
 using namespace std;
 
 static void error_callback(int error, const char* description) {
@@ -254,7 +262,8 @@ void ShowTransformManip(
   window_size.x -= imgui_style.WindowPadding.x * 2;
   window_size.y -= imgui_style.WindowPadding.y * 2 + title_height;
 
-  ImGui::Begin("Guizmo");
+  if (gDialogs->mImGuizmoTransform) {
+    ImGui::Begin("Guizmo", &gDialogs->mImGuizmoTransform);
 
     if (editTransformDecomposition) {
       if (ImGui::IsKeyPressed(90)) mCurrentGizmoOperation = ImGuizmo::TRANSLATE;
@@ -271,7 +280,9 @@ void ShowTransformManip(
               mCurrentGizmoOperation == ImGuizmo::ROTATE))
         mCurrentGizmoOperation = ImGuizmo::ROTATE;
       ImGui::SameLine();
-    if (ImGui::RadioButton("Scale", mCurrentGizmoOperation == ImGuizmo::SCALE))
+      if (ImGui::RadioButton(
+              "Scale",
+              mCurrentGizmoOperation == ImGuizmo::SCALE))
         mCurrentGizmoOperation = ImGuizmo::SCALE;
       if (ImGui::RadioButton(
               "Universal",
@@ -325,6 +336,7 @@ void ShowTransformManip(
     }
 
     ImGui::End();
+  }
 
   ImGuiIO& io = ImGui::GetIO();
   float viewManipulateRight = io.DisplaySize.x;
@@ -407,7 +419,12 @@ void DoRender() {
 
   if (gViewMode == ViewModeSimulation) {
     simulator_draw(gRndrCmds);
+
+    if (gDialogs->mSimulator) {
+      ImGui::Begin("Simulator", &gDialogs->mSimulator);
       simulator_gui();
+      ImGui::End();
+    }
   } else {
     RenderGuizmoTest(gRndrCmds);
   }
@@ -426,7 +443,8 @@ void DoRender() {
   ImGuiIO& io = ImGui::GetIO();
 
   ShowViewManip();
-  ShowTransformManip((float*)&(gCameraState->mtxView),
+  ShowTransformManip(
+      (float*)&(gCameraState->mtxView),
       (float*)&(gProjMatrix),
       (float*)(&gTransformMatrix));
 
@@ -516,6 +534,9 @@ int main(void) {
   CameraState_Init(&camera_state);
   gCameraState = &camera_state;
 
+  Dialogs dialogs;
+  gDialogs = &dialogs;
+
   gRndr = srndr_create();
   gView = srview_create();
   gRndrCmds = srcmdbuf_create(1024);
@@ -575,11 +596,13 @@ int main(void) {
       ImGui::BeginMainMenuBar();
 
       if (ImGui::BeginMenu("Dialogs")) {
-        ImGui::Checkbox("ImGui Demo", &show_demo_window);
+        ImGui::Checkbox("Camera", &gDialogs->mCameraDialog);
+        ImGui::Checkbox("Simulator", &gDialogs->mSimulator);
+        ImGui::Checkbox("ImGuizmo Transform", &gDialogs->mImGuizmoTransform);
+        ImGui::Checkbox("ImGui Demo", &gDialogs->mImGuiDemo);
         ImGui::EndMenu();
       }
 
-
       float menu_bar_height = ImGui::GetWindowHeight();
       ImGui::EndMainMenuBar();
 
@@ -616,26 +639,49 @@ int main(void) {
           camera_accel[2] += 100.f;
         }
 
-        CameraState_Update(gCameraState, frame_delta_time, gGuiInputState->mousedX, gGuiInputState->mousedY, camera_accel);
+        CameraState_Update(
+            gCameraState,
+            frame_delta_time,
+            gGuiInputState->mousedX,
+            gGuiInputState->mousedY,
+            camera_accel);
       }
 
-      ImGui::Begin("Camera Controls");
+      if (gDialogs->mCameraDialog) {
+        ImGui::Begin("Camera Controls", &gDialogs->mCameraDialog);
 
         bool changed = false;
-      changed = ImGui::SliderFloat("Heading", &gCameraState->heading, -M_PI * 0.98, M_PI * 0.98);
+        changed = ImGui::SliderFloat(
-      changed = ImGui::SliderFloat("Pitch", &gCameraState->pitch, -M_PI * 0.49, M_PI * 0.49) || changed;
+            "Heading",
+            &gCameraState->heading,
+            -M_PI * 0.98,
+            M_PI * 0.98);
+        changed = ImGui::SliderFloat(
+                      "Pitch",
+                      &gCameraState->pitch,
+                      -M_PI * 0.49,
+                      M_PI * 0.49)
+                  || changed;
 
-      changed = ImGui::SliderFloat3("Forward", gCameraState->forward, -1.f, 1.f) || changed;
+        changed =
-      changed = ImGui::SliderFloat3("Right", gCameraState->right, -1.f, 1.f) || changed;
+            ImGui::SliderFloat3("Forward", gCameraState->forward, -1.f, 1.f)
-      changed = ImGui::SliderFloat3("Up", gCameraState->up, -1.f, 1.f) || changed;
+            || changed;
-      changed = ImGui::SliderFloat3("Pos", gCameraState->pos, -100.f, 100.f) || changed;
+        changed = ImGui::SliderFloat3("Right", gCameraState->right, -1.f, 1.f)
+                  || changed;
+        changed =
+            ImGui::SliderFloat3("Up", gCameraState->up, -1.f, 1.f) || changed;
+        changed = ImGui::SliderFloat3("Pos", gCameraState->pos, -100.f, 100.f)
+                  || changed;
 
         if (changed) {
           CameraState_CalcToMatrix(gCameraState, &gCameraState->mtxView);
         }
         ImGui::End();
+      }
 
-      if (show_demo_window) ImGui::ShowDemoWindow();
+      if (gDialogs->mImGuiDemo) {
+        ImGui::ShowDemoWindow(&gDialogs->mImGuiDemo);
+      }
 
       ShowDockspace(true);