From 279fe685ec25bf815719d0b08007756a351f8e56 Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Fri, 6 May 2022 19:53:21 +0200
Subject: [PATCH] nilrider:: VR support

---
 rogueviz/nilrider/nilrider.cpp  |  4 ++++
 rogueviz/nilrider/timestamp.cpp | 12 ++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/rogueviz/nilrider/nilrider.cpp b/rogueviz/nilrider/nilrider.cpp
index 1380e367..85662fb0 100644
--- a/rogueviz/nilrider/nilrider.cpp
+++ b/rogueviz/nilrider/nilrider.cpp
@@ -344,6 +344,7 @@ void settings() {
   dialog::add_action_push(nil_projection);
   dialog::addItem("configure keys", 'k');
   dialog::add_action_push(multi::get_key_configurer(1, move_names, "Nilrider keys"));
+  vrhr::vr_enable_button();
   dialog::addItem("RogueViz settings", 'r');
   dialog::add_key_action('r', [] {
     pushScreen(showSettings);
@@ -525,6 +526,9 @@ void initialize_all() {
   initialize();
   poly_outline = 0xFF;
   pushScreen(pick_game);
+  vrhr::hsm = vrhr::eHeadset::reference;
+  vrhr::eyes = vrhr::eEyes::equidistant;
+  vrhr::absolute_unit_in_meters = 6;
   }
 
 auto celldemo = arg::add3("-unilcycle", initialize) + arg::add3("-unilplan", [] { planning_mode = true; }) + arg::add3("-viewsim", [] { view_replay = true; })
diff --git a/rogueviz/nilrider/timestamp.cpp b/rogueviz/nilrider/timestamp.cpp
index 87343d38..f17c5f85 100644
--- a/rogueviz/nilrider/timestamp.cpp
+++ b/rogueviz/nilrider/timestamp.cpp
@@ -166,6 +166,18 @@ bool timestamp::tick(level *lev) {
 
 void timestamp::centerview(level *lev) {
   // static bool once = false; if(once) return; once = true;
+
+  if(vrhr::active()) {
+    transmatrix Ta = cspin(0, 1, -heading_angle);
+    transmatrix Tb = cspin(0, 2, -slope);
+
+    hyperpoint base = Ta * Tb * point31(0, 0, whrad);
+    hyperpoint refpoint = rgpushxto0(where) * rgpushxto0(base) * point31(0, 0, whrad+whrad);
+    centerover = cwt.at; playermoved = false;
+    View = cspin(0, 2, heading_angle-90*degree) * cspin(1, 2, -90*degree) * gpushxto0(refpoint);
+    return;
+    }
+
   auto w = where;
   w[2] += 0.2 * lev->scale;
   hyperpoint front = rgpushxto0(w) * sym_to_heis(hyperpoint(1e-3 * cos(heading_angle), 1e-3*sin(heading_angle), 0, 1));