[jak2] WIP minimap (#2280)

Work in progress minimap. Known issues:
- "path finding" doesn't appear to work - it gets stuck forever in many
cases
- some nasty patches around timer-based code
- jak arrow blending issues
- would be nice to make it higher resolution

if the search is forced to terminate due to iteration/time limits, the
icon is not in the right place

![image](https://user-images.githubusercontent.com/48171810/221432792-678d6124-a6a6-4875-a91f-7eceedbfec98.png)

decompiler/util/data_decompile.cpp

@@ -1059,7 +1059,9 @@ goos::Object decompile_structure(const TypeSpec& type,
   enum ByteStatus : u8 { ZERO_UNREAD, HAS_DATA_UNREAD, ZERO_READ, HAS_DATA_READ };
   std::vector<int> field_status_per_byte;
   for (int i = 0; i < byte_count; i++) {
-    auto& w = obj_words.at(i / 4);
+    // auto& w = obj_words.at(i / 4);
+    int b = (offset_location + i);
+    auto& w = words.at(label.target_segment).at(b / 4);
     switch (w.kind()) {
       case LinkedWord::TYPE_PTR:
       case LinkedWord::PTR:
@@ -1068,7 +1070,7 @@ goos::Object decompile_structure(const TypeSpec& type,
         field_status_per_byte.push_back(HAS_DATA_UNREAD);
         break;
       case LinkedWord::PLAIN_DATA: {
-        field_status_per_byte.push_back(w.get_byte(i % 4) ? HAS_DATA_UNREAD : ZERO_UNREAD);
+        field_status_per_byte.push_back(w.get_byte(b % 4) ? HAS_DATA_UNREAD : ZERO_UNREAD);
       } break;
       default:
         throw std::runtime_error("Unsupported word in static data");
@@ -1209,7 +1211,11 @@ goos::Object decompile_structure(const TypeSpec& type,
             }
             std::vector<u8> bytes_out;
             for (int byte_idx = field_start; byte_idx < field_end; byte_idx++) {
-              bytes_out.push_back(obj_words.at(byte_idx / 4).get_byte(byte_idx % 4));
+              int byte_idx_in_seg = byte_idx + label.offset - type_info->get_offset();
+              bytes_out.push_back(words.at(label.target_segment)
+                                      .at(byte_idx_in_seg / 4)
+                                      .get_byte(byte_idx_in_seg % 4));
+              // bytes_out.push_back(obj_words.at(byte_idx / 4).get_byte(byte_idx % 4));
             }
 
             // use more specific types for gif tags.