first person cam proof of concept

include/dusk/settings.h

@@ -65,6 +65,9 @@ struct UserSettings {
 
         // Controls
         ConfigVar<bool> enableTurboKeybind;
+
+        // VR
+        ConfigVar<bool> vrCamera;
     } game;
 };
 

src/d/d_camera.cpp

@@ -23,6 +23,10 @@
 #include <cmath>
 #include <cstring>
 
+#if TARGET_PC
+#include "dusk/settings.h"
+#endif
+
 #if DEBUG
 #include "d/d_debug_pad.h"
 #include "d/d_debug_camera.h"
@@ -1355,6 +1359,20 @@ bool dCamera_c::Run() {
     clrFlag(0x1000);
     mTagCamTool.Clr();
     field_0x89c.Clr();
+
+#if TARGET_PC
+    if (dusk::getSettings().game.vrCamera && link != nullptr) {
+        MtxP headMtx = link->getHeadMtx();
+        cXyz headForward(headMtx[0][0], headMtx[1][0], headMtx[2][0]);
+
+        // place eye slightly in front of Link's eye position, looking forward
+        static constexpr f32 EYE_FORWARD_OFFSET = 20.0f;
+        static constexpr f32 CENTER_DISTANCE = 200.0f;
+        mEye = mViewCache.mEye = link->eyePos + headForward * EYE_FORWARD_OFFSET;
+        mCenter = mViewCache.mCenter = mEye + headForward * CENTER_DISTANCE;
+    }
+#endif
+
     return sp0F;
 }
 

src/dusk/imgui/ImGuiMenuEnhancements.cpp

@@ -136,6 +136,15 @@ namespace dusk {
                 ImGui::EndMenu();
             }
 
+            if (ImGui::BeginMenu("VR")) {
+                config::ImGuiCheckbox("VR Camera", getSettings().game.vrCamera);
+                if (ImGui::IsItemHovered()) {
+                    ImGui::SetTooltip("Places the camera at Link's eyes, facing where his head points");
+                }
+
+                ImGui::EndMenu();
+            }
+
             ImGui::EndMenu();
         }
     }

src/dusk/settings.cpp

@@ -53,6 +53,8 @@ UserSettings g_userSettings = {
 
         // Controls
         .enableTurboKeybind {"game.enableTurboKeybind", true},
+
+        .vrCamera {"game.vrCamera", false}
     },
 };
 
@@ -95,6 +97,7 @@ void registerSettings() {
     Register(g_userSettings.game.midnasLamentNonStop);
     Register(g_userSettings.game.enableTurboKeybind);
     Register(g_userSettings.game.fastSpinner);
+    Register(g_userSettings.game.vrCamera);
 }
 
 // Transient settings