op 81

Author: Trolldemorted

src/SUMMARY.md

@@ -15,6 +15,7 @@
     - [Bath House Bribe Failure](./operations/0043-bath-house-bribe-failure.md)
     - [Make Town Hall Offer](./operations/0048-make-town-hall-offer.md)
     - [Tavern Interaction](./operations/0052-tavern-interaction.md)
+    - [Start Criminal Investigation](./operations/0081-start-criminal-investigation.md)
 - [Scheduled Tasks](./scheduled-tasks/0000.md)
     - [Criminal Investigation](./scheduled-tasks/0005-criminal-investigation.md)
     - [Update Shipyard Experience](./scheduled-tasks/0006-update-shipyard-experience.md)

src/operations/0052-tavern-interaction.md

@@ -1,5 +1,4 @@
 # Tavern Interaction
-
 The tavern interaction operations are enqueued by the tavern's panel when switching between the tavern's pages.
 The following fields have been identified:
 

src/operations/0081-start-criminal-investigation.md

@@ -0,0 +1,17 @@
+# Start Criminal Investigation
+The `handle_operation_81_start_criminal_investigation` at `0x0053FA80` schedules a *Criminal Investigation* task to an indicated timestamp.
+The following fields have been identified:
+```c
+struct operation_81_start_criminal_investigation
+{
+  signed __int32 field_0_merchant_index;
+  signed __int32 field_4_crime_type;
+  signed __int32 field_8_delay;
+  signed __int32 field_C_town_index;
+};
+```
+
+The scheduled task's target git difftimestamp is calculated as follows:
+```python
+(delay + now() + 0x100) & 0x00 | 0x80
+```