From 9799ff1ccfc71fe06ba37261fde5a7a87bc9cb9f Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Sat, 17 Sep 2022 17:34:54 +0200
Subject: [PATCH] ads-game:: view history while paused

---
 rogueviz/ads/control.cpp |  8 ++++++++
 rogueviz/ads/display.cpp | 28 +++++++++++++++++++++++++++-
 rogueviz/ads/map.cpp     |  7 +++++++
 3 files changed, 42 insertions(+), 1 deletion(-)

diff --git a/rogueviz/ads/control.cpp b/rogueviz/ads/control.cpp
index 191a10a9..952244fe 100644
--- a/rogueviz/ads/control.cpp
+++ b/rogueviz/ads/control.cpp
@@ -189,6 +189,14 @@ bool ads_turn(int idelta) {
     else if(a[16+9]) tc = pt;
     else if(a[16+10]) tc = -pt;
 
+    if(!paused) {
+      auto& v = ci_at[hybrid::get_where(vctr).first].shipstates;
+      v.emplace_back();
+      v.back().at = ads_inverse(current * vctrV) * spin((ang+90)*degree);
+      v.back().start = ship_pt;
+      v.back().duration = pt;
+      }
+
     current.T = cspin(3, 2, tc) * current.T;
     
     optimize_shift(current);    
diff --git a/rogueviz/ads/display.cpp b/rogueviz/ads/display.cpp
index fd70da8e..d1c85432 100644
--- a/rogueviz/ads/display.cpp
+++ b/rogueviz/ads/display.cpp
@@ -2,6 +2,8 @@ namespace hr {
 
 namespace ads_game {
 
+color_t shipcolor = 0x2020FFFF;
+
 cross_result findflat(shiftpoint h) {
   return cross0(current * rgpushxto0(h));
   }
@@ -125,6 +127,31 @@ void draw_game_cell(cell *cs, ads_matrix V, ld plev) {
       }
     }
   
+  /* todo: binary search */
+  if(paused) for(auto& rock: ci.shipstates) {
+    ld t;
+    hybrid::in_actual([&]{
+      dynamicval<eGeometry> b(geometry, gRotSpace);
+      auto h = V * rock.at;
+      t = cross0(current * h).shift;
+      });
+    
+    if(t < -1e-6 || t > rock.duration + 1e-6) continue;
+    vector<hyperpoint> pts;
+
+    auto& shape = shape_ship;
+    for(int i=0; i<isize(shape); i += 2) {
+      hybrid::in_actual([&]{
+        auto h = V * rock.at * rgpushxto0(normalize(hyperpoint(shape[i], shape[i+1], 1, 0)));
+        pts.push_back(cross0(current * h).h);
+        });
+      }
+
+    for(auto h: pts) curvepoint(h);
+    curvepoint(pts[0]);
+    queuecurve(shiftless(Id), 0xFF, shipcolor, PPR::LINE);
+    }
+  
   }
 
 void view_ads_game() {
@@ -208,7 +235,6 @@ void view_ads_game() {
 
     if(!game_over && !paused) {
       poly_outline = 0xFF;
-      color_t shipcolor = 0x2020FFFF;
       if(ship_pt < invincibility_pt) {
         ld u = (invincibility_pt-ship_pt) / how_much_invincibility;
         poly_outline = gradient(shipcolor, rsrc_color[rtHull], 0, 0.5 + cos(5*u*TAU), 1);
diff --git a/rogueviz/ads/map.cpp b/rogueviz/ads/map.cpp
index 8f1cbdb7..7df39453 100644
--- a/rogueviz/ads/map.cpp
+++ b/rogueviz/ads/map.cpp
@@ -24,10 +24,17 @@ struct ads_object {
 
 enum eWalltype { wtNone, wtDestructible, wtSolid, wtGate };
 
+struct shipstate {
+  ads_matrix at;
+  ld start;
+  ld duration;
+  };
+
 struct cellinfo {
   int mpd_terrain; /* 0 = fully generated terrain */
   int rock_dist; /* rocks generated in this radius */
   vector<std::unique_ptr<ads_object>> rocks;
+  vector<shipstate> shipstates;
   eWalltype type;
   cellinfo() {
     mpd_terrain = 4;