feat(3d): Implement Blender export and binary scene loading pipeline

1 files changed, 107 insertions, 0 deletions

diff --git a/src/tests/test_scene_loader.cc b/src/tests/test_scene_loader.cc
new file mode 100644
index 0000000..e14054b
--- /dev/null
+++ b/src/tests/test_scene_loader.cc
@@ -0,0 +1,107 @@
+#include "3d/scene_loader.h"
+#include "util/mini_math.h"
+#include "util/asset_manager.h"
+#include "generated/assets.h"
+#include <cstdio>
+#include <cstring>
+#include <vector>
+#include <cassert>
+
+int main() {
+    Scene scene;
+    std::vector<uint8_t> buffer;
+    
+    // Header
+    const char* magic = "SCN1";
+    for(int i=0; i<4; ++i) buffer.push_back(magic[i]);
+    
+    uint32_t num_obj = 2; // Increased to 2
+    uint32_t num_cam = 0;
+    uint32_t num_light = 0;
+    
+    auto push_u32 = [&](uint32_t v) {
+        uint8_t* p = (uint8_t*)&v;
+        for(int i=0; i<4; ++i) buffer.push_back(p[i]);
+    };
+    auto push_f = [&](float v) {
+        uint8_t* p = (uint8_t*)&v;
+        for(int i=0; i<4; ++i) buffer.push_back(p[i]);
+    };
+    
+    push_u32(num_obj);
+    push_u32(num_cam);
+    push_u32(num_light);
+    
+    // --- Object 1: Basic Cube ---
+    char name1[64] = {0};
+    std::strcpy(name1, "TestObject");
+    for(int i=0; i<64; ++i) buffer.push_back(name1[i]);
+    
+    push_u32(0); // CUBE
+    
+    // Pos
+    push_f(1.0f); push_f(2.0f); push_f(3.0f);
+    // Rot (0,0,0,1)
+    push_f(0.0f); push_f(0.0f); push_f(0.0f); push_f(1.0f);
+    // Scale
+    push_f(1.0f); push_f(1.0f); push_f(1.0f);
+    // Color
+    push_f(1.0f); push_f(0.0f); push_f(0.0f); push_f(1.0f);
+    
+    // Mesh Name length 0
+    push_u32(0); 
+    
+    // Physics
+    push_f(10.0f); // mass
+    push_f(0.8f); // restitution
+    push_u32(1); // static
+    
+    // --- Object 2: Mesh with Asset Ref ---
+    char name2[64] = {0};
+    std::strcpy(name2, "MeshObject");
+    for(int i=0; i<64; ++i) buffer.push_back(name2[i]);
+    
+    push_u32(6); // MESH
+    
+    // Pos
+    push_f(0.0f); push_f(0.0f); push_f(0.0f);
+    // Rot
+    push_f(0.0f); push_f(0.0f); push_f(0.0f); push_f(1.0f);
+    // Scale
+    push_f(1.0f); push_f(1.0f); push_f(1.0f);
+    // Color
+    push_f(0.0f); push_f(1.0f); push_f(0.0f); push_f(1.0f);
+    
+    // Mesh Name "MESH_CUBE"
+    const char* mesh_name = "MESH_CUBE";
+    uint32_t mesh_name_len = std::strlen(mesh_name);
+    push_u32(mesh_name_len);
+    for(size_t i=0; i<mesh_name_len; ++i) buffer.push_back(mesh_name[i]);
+    
+    // Physics
+    push_f(1.0f); 
+    push_f(0.5f);
+    push_u32(0); // dynamic
+    
+    // --- Load ---
+    if (SceneLoader::LoadScene(scene, buffer.data(), buffer.size())) {
+        printf("Scene loaded successfully.\n");
+        assert(scene.objects.size() == 2);
+        
+        // Check Obj 1
+        assert(scene.objects[0].type == ObjectType::CUBE);
+        assert(scene.objects[0].position.x == 1.0f);
+        assert(scene.objects[0].is_static == true);
+        
+        // Check Obj 2
+        assert(scene.objects[1].type == ObjectType::MESH);
+        assert(scene.objects[1].mesh_asset_id == AssetId::ASSET_MESH_CUBE);
+        printf("Mesh Asset ID resolved to: %d (Expected %d)\n", (int)scene.objects[1].mesh_asset_id, (int)AssetId::ASSET_MESH_CUBE);
+        
+    } else {
+        printf("Scene load failed.\n");
+        return 1;
+    }
+    
+    return 0;
+}