Syntax error fix + partially wrote GltfNode and GltfScene structures. Sometimes I do wonder if writing 'Gltf' look good or not...

src/l1/anne/codegen.c

@@ -15,6 +15,7 @@
 #include "lucy.h"
 #include "alice.h"
 #include "precise_integers.h"
+#include "gltf_structures.h"
 
 int main() {
     mkdir_nofail("l1");
@@ -33,6 +34,7 @@ int main() {
     generate_l1_lucy_headers();
     generate_code_for_alice_on_l1();
     generate_l1_header_for_precise_integers();
+    generate_l1_gltf_headers();
     finish_layer(cstr("l1"));
     return 0;
 }

src/l1/anne/gltf_structures.h

@@ -0,0 +1,10 @@
+#pragma once
+/* This file covers codegen for GLTF structures (that represent GLTF objects in memory) */
+
+#include "../codegen/util_template_inst.h"
+
+void generate_l1_gltf_headers() {
+    SpanU8 l = cstr("l1"), ns = cstr("");
+    generate_eve_span_company_for_non_primitive_non_clonable(l, ns, cstr("GltfScene"), true, false);
+    generate_eve_span_company_for_non_primitive_non_clonable(l, ns, cstr("GltfNode"), true, false);
+}

src/l1_5/core/quaternion.h

@@ -59,4 +59,4 @@ mat3 unit_quaternion_fl_to_rot3d_mat3(vec4 q){
 //         e_vc = sinf(t *fi) / qva;
 //     }
 //     return (vec4){e_x, e_vc * q.y, e_vc * q.z, e_vc * q.w};
-}
+// }

src/l2/alice/model_file.h

@@ -6,6 +6,7 @@
 #include "../../l1/system/fileio.h"
 #include "assets.h"
 #include "stdalign.h"
+#include "../core/glb_file.h"
 
 static_assert(sizeof(float) == 4, "...");
 static_assert(sizeof(GenericMeshVertexInc) == 4 * (3 + 2), "...");
@@ -237,3 +238,32 @@ GenericMeshTopology alice_expect_read_generic_mesh_from_obj_file(VecU8 file_path
     OptionGenericMeshTopology option = alice_read_generic_mesh_from_obj_file(file_path);
     return OptionGenericMeshTopology_expect(option);
 }
+
+/* Temporary function for some experiments. Will rewrite/delete later */
+GenericMeshTopology alice_expect_read_generic_mesh_from_glb_file(VecU8 file_path) {
+    GLBFileSegments segments;
+    int code = glb_file_get_segments(VecU8_to_span(&file_path), &segments);
+    if (code) {
+        abortf("Something went wrong when reading glb container\n");
+    }
+
+    /* default_scene "scene" : Option<index into scenes>
+     *
+     * scenes "scenes" : Vec<Scene> {
+     *     if "scenes" field is not present, it counts as empty vector }
+     *
+     * nodes "nodes" : Vec<Node> {
+     *     if "nodes" field is not present, it counts as empty vector }
+     */
+
+    OptionU32 default_scene = None_U32();
+
+
+
+    VecU8_print(VecU8_fmt("default_scene: %v\n",
+        default_scene.variant == Option_None ? vcstr("None") : U64_stringification(default_scene.some)));
+
+    VecGenericMeshVertexInc vertices = VecGenericMeshVertexInc_new();
+    VecU32 indexes = VecU32_new();
+    return (GenericMeshTopology){.vertices = vertices, .indexes = indexes};
+}

src/l2/core/glb_file.h

@@ -1,6 +1,9 @@
 #pragma once
 
 #include "json_encoded.h"
+#include "../../../gen/l1/VecAndSpan_U64.h"
+#include "../../../gen/l1/OptionU32.h"
+#include "../../l1_5/core/quaternion.h"
 
 /* todo: add big endian support */
 
@@ -71,3 +74,28 @@ int glb_file_get_segments(SpanU8 file, GLBFileSegments* ret){
     *ret = (GLBFileSegments){.version = version, .gltf = parsed_json.some, .bin_segment = bin_segment};
     return 0;
 }
+
+typedef struct {
+    VecU8 name;
+    VecU64 nodes;
+} GltfScene;
+
+void GltfScene_drop(GltfScene self) {
+    VecU8_drop(self.name);
+    VecU64_drop(self.nodes);
+}
+
+#include "../../../gen/l1/eve/VecGltfScene.h"
+
+typedef struct {
+    VecU8 name;
+    VecU64 children;
+    OptionU32 mesh;
+} GltfNode;
+
+void GltfNode_drop(GltfNode self) {
+    VecU8_drop(self.name);
+    VecU64_drop(self.children);
+}
+
+#include "../../../gen/l1/eve/VecGltfNode.h"

src/l2/core/json.h

@@ -92,3 +92,23 @@ Json Json_from_MapVecU8ToJson(json_dictionary_t dict){
 
 // Bonus
 #include "../../../gen/l1/eve/OptionJson.h"
+
+// todo: implement _find method in RBTREE template (yes, I WILL do it eventually)
+/* Returns nullptr if there is no such field or object is not an  */
+const Json* Json_dict_at(const Json* self, SpanU8 key) {
+    if (self->variant != Json_dict)
+        return NULL;
+    const json_dictionary_t* d = &self->dict;
+    RBTreeNode* cur = d->root;
+    while (cur != d->NIL) {
+        RBTreeNode_KVPVecU8ToJson* n = (RBTreeNode_KVPVecU8ToJson*)cur;
+        if (SpanU8_less_SpanU8(VecU8_to_span(&n->key), key)) {
+            cur = cur->left;
+        } else if (SpanU8_less_SpanU8(key, VecU8_to_span(&n->key))) {
+            cur = cur->right;
+        } else {
+            return &n->value;
+        }
+    }
+    return NULL;
+}

src/l3/r4/r4.c

@@ -403,5 +403,5 @@ void run_app(){
 }
 
 int main(){
-    run_app();
+    alice_expect_read_generic_mesh_from_glb_file(vcstr("./src/l3/models/skeleton.glb"));
 }