From 200ecad6b39bf225904dfcd69e09c449fe14d232 Mon Sep 17 00:00:00 2001
From: benkyd <benjaminkyd@gmail.com>
Date: Fri, 20 Jan 2023 13:21:17 +0000
Subject: [PATCH] And you may ask yourself \'Well, how did i get here?\'
 (memory leak)

---
 src/hart_module.cpp       |  1 -
 src/renderer/renderer.cpp | 77 ++++++++++++++++++++++++++++++++-------
 src/scene/mesh.cpp        |  2 +-
 3 files changed, 64 insertions(+), 16 deletions(-)

diff --git a/src/hart_module.cpp b/src/hart_module.cpp
index b6498f6..2df1433 100644
--- a/src/hart_module.cpp
+++ b/src/hart_module.cpp
@@ -65,7 +65,6 @@ void rayHitCallback(void* hhm, HitInfo* hit)
 void HHM::rayReturn(HitInfo* hit)
 {
     HARTModule* mod = mDirectory.getActiveModule();
-    spdlog::debug("HIT!!");
     Renderer->computeHit(hit);
 }
 
diff --git a/src/renderer/renderer.cpp b/src/renderer/renderer.cpp
index 69ee7e5..0f3381e 100644
--- a/src/renderer/renderer.cpp
+++ b/src/renderer/renderer.cpp
@@ -4,6 +4,7 @@
 
 #include <scene/camera.hpp>
 #include <scene/scene.hpp>
+#include <scene/mesh.hpp>
 #include <tracing/ray.hpp>
 #include <tracing/hit.hpp>
 
@@ -99,25 +100,72 @@ void RayRenderer::draw()
     }
 
     mCurrentRefTable = &startRays.Reference;
-    mIface->startTrace(startRays.Field);
+    // mIface->startTrace(startRays.Field);
 
     // hault wait for the module to finish
-    bool frameStatus = false;
-    while (!frameStatus)
+    // bool frameStatus = false;
+    // while (!frameStatus)
+    // {
+    //     switch(mIface->getModuleState())
+    //     {
+    //         case EModuleState::Bad:
+    //             spdlog::error("MODULE STATE BAD");
+    //             break;
+    //         case EModuleState::Build:
+    //             spdlog::error("MODULE STATE BUILD");
+    //         case EModuleState::Trace:
+    //             break;
+    //         case EModuleState::Ready:
+    //             frameStatus = true;
+    //             break;
+    //     }
+    // }
+
+    while(!startRays.Field.empty())
     {
-        switch(mIface->getModuleState())
+        void* verticies; void* normals; void* indicies;
+        int vertexCount = mCurrentScene->getRenderables()[0]->getVerticies(verticies, normals);
+        int indexCount = mCurrentScene->getRenderables()[0]->getIndicies(indicies);
+        float* mVert = (float*)verticies; float* mNorm = (float*)normals; 
+        int mVc = vertexCount; uint32_t* mIndicies = (uint32_t*)indicies; int mIc = indexCount;
+
+        auto* ray = startRays.Field.front();
+        int bestIdx = -1;
+        glm::vec2 coords;
+        glm::vec2 bestTexcoord;
+        float bestDist = INFINITY;
+        float dist;
+        for (int i = 0; i < mCurrentScene->getRenderables()[0]->getIndexCount() ; i += 9)
         {
-            case EModuleState::Bad:
-                spdlog::error("MODULE STATE BAD");
-                break;
-            case EModuleState::Build:
-                spdlog::error("MODULE STATE BUILD");
-            case EModuleState::Trace:
-                break;
-            case EModuleState::Ready:
-                frameStatus = true;
-                break;
+            uint32_t ind = mIndicies[i];
+            // Check if the ray intersects
+            const glm::vec3 a = { mVert[ind + 1], mVert[ind + 2], mVert[ind + 3] };
+            const glm::vec3 b = { mVert[ind + 4], mVert[ind + 5], mVert[ind + 6] };
+            const glm::vec3 c = { mVert[ind + 7], mVert[ind + 8], mVert[ind + 9] };
+        
+            if (!glm::intersectRayTriangle(ray->Origin, ray->Direction, a, b, c, coords, dist)) { continue; }
+            if (dist > bestDist || dist < 0.0f) { continue; }
+            bestIdx = i;
+            bestDist = dist;
+            bestTexcoord = coords;
         }
+
+        HitInfo* hit = new HitInfo{};
+        // If no hit, we still need to inform the HHM
+        if (bestIdx < 0) 
+        {
+            startRays.Field.pop_back();
+            continue;
+        }
+
+        hit->Distance = bestDist;
+        hit->UV = bestTexcoord;
+
+        glm::ivec2 pos = (*mCurrentRefTable)[ray->Reference];
+        spdlog::debug("HIT!!");
+        mTarget[pos.y * mRenderTargetSize.x + pos.x] = { bestDist, bestDist, bestDist, 1.0f };
+        startRays.Field.pop_back();
+        // this->computeHit(hit);
     }
 
     spdlog::info("Sample complete");
@@ -130,6 +178,7 @@ void RayRenderer::draw()
 
 void RayRenderer::computeHit(HitInfo* info)
 {
+    spdlog::debug("HIT!!");
     glm::ivec2 pos = (*mCurrentRefTable)[info->Caller->Reference];
     std::lock_guard<std::mutex> lock(this->_mTarget);
     float d = info->Distance;
diff --git a/src/scene/mesh.cpp b/src/scene/mesh.cpp
index 65d892d..c0f39ff 100644
--- a/src/scene/mesh.cpp
+++ b/src/scene/mesh.cpp
@@ -78,7 +78,7 @@ int Mesh::getVerticies(void*& v, void*& n)
 {
     v = (void*)&mObjLoader->getPositions()[0];
     n = (void*)&mObjLoader->getNormals()[0];
-    spdlog::debug("Mesh get {} {}", v, n);
+    // spdlog::debug("Mesh get {} {}", v, n);
     return mObjLoader->getVertCount();
 }