From ca12bddaf5e1530670f433ffa4bcbda9d6395620 Mon Sep 17 00:00:00 2001
From: TheAimMan <147098375+TheAimMan@users.noreply.github.com>
Date: Mon, 30 Oct 2023 03:09:34 -0400
Subject: [PATCH] BUGFIX: Check Corp Research pre-reqs in research api call
 (#884)

---
 src/Corporation/Actions.ts | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/Corporation/Actions.ts b/src/Corporation/Actions.ts
index 7cb1831fe..9e653a8e2 100644
--- a/src/Corporation/Actions.ts
+++ b/src/Corporation/Actions.ts
@@ -464,7 +464,16 @@ export function Research(researchingDivision: Division, researchName: CorpResear
   const researchTree = IndustryResearchTrees[researchingDivision.type];
   if (researchTree === undefined) throw new Error(`No research tree for industry '${researchingDivision.type}'`);
   const research = ResearchMap[researchName];
-
+  const researchNode = researchTree.findNode(researchName);
+  const researchPreReq = researchNode?.parent?.researchName;
+  //Check to see if the research request has any pre-reqs that need to be researched first.
+  if (researchPreReq) {
+    if (!researchingDivision.researched?.has(researchPreReq)) {
+      throw new Error(
+        `Division ${researchingDivision.name} requires ${researchPreReq} before researching ${research.name}`,
+      );
+    }
+  }
   if (researchingDivision.researched.has(researchName)) return;
   if (researchingDivision.researchPoints < research.cost) {
     throw new Error(`You do not have enough Scientific Research for ${research.name}`);