From 3b8fe52e0f801978f9e0b1a7174155c8686c61bd Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Thu, 22 Feb 2024 18:36:42 +0100
Subject: editor: region test stub

---
 editor/tests-private.hpp |  4 ++-
 editor/tests/region.cpp  | 73 ++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 76 insertions(+), 1 deletion(-)
 create mode 100644 editor/tests/region.cpp

diff --git a/editor/tests-private.hpp b/editor/tests-private.hpp
index c4acc80d..5e44879c 100644
--- a/editor/tests-private.hpp
+++ b/editor/tests-private.hpp
@@ -31,7 +31,7 @@ protected:
 };
 
 enum class Test : uint32_t {
-    none, path, raycast, COUNT,
+    none, path, raycast, /*region,*/ COUNT,
 };
 
 struct tests_data final : tests_data_
@@ -43,6 +43,7 @@ struct tests_data final : tests_data_
     static Pointer<base_test> make_test_none();
     static Pointer<base_test> make_test_path();
     static Pointer<base_test> make_test_raycast();
+    static Pointer<base_test> make_test_region();
 
     Pointer<base_test> current_test;
     Test current_index = Test::none;
@@ -58,6 +59,7 @@ struct tests_data final : tests_data_
         { "None"_s, Test::none, &tests_data::make_test_none, },
         { "Path"_s, Test::path, &tests_data::make_test_path, },
         { "Raycasting"_s, Test::raycast, &tests_data::make_test_raycast },
+        //{ "Region extraction"_s, Test::region, &tests_data::make_test_region },
     };
 };
 
diff --git a/editor/tests/region.cpp b/editor/tests/region.cpp
new file mode 100644
index 00000000..74a4523f
--- /dev/null
+++ b/editor/tests/region.cpp
@@ -0,0 +1,73 @@
+#include "../tests-private.hpp"
+#include "src/tile-constants.hpp"
+#include <bitset>
+
+namespace floormat::tests {
+
+namespace {
+
+constexpr int div_factor = 4; // from path-search.hpp
+constexpr auto div_size = iTILE_SIZE2 / div_factor;
+constexpr uint32_t chunk_nbits = TILE_MAX_DIM*TILE_MAX_DIM*uint32_t{div_factor*div_factor};
+
+template<typename T> constexpr inline auto tile_size = Math::Vector2<T>{iTILE_SIZE2};
+template<typename T> constexpr inline auto chunk_size = Math::Vector2<T>{TILE_MAX_DIM} * tile_size<T>;
+
+constexpr Vector2i chunk_offsets[3][3] = { // from src/raycast.cpp
+    {
+        { -chunk_size<int>.x(), -chunk_size<int>.y()    },
+        { -chunk_size<int>.x(),  0                      },
+        { -chunk_size<int>.x(),  chunk_size<int>.y()    },
+    },
+    {
+        { 0,                    -chunk_size<int>.y()    },
+        { 0,                     0                      },
+        { 0,                     chunk_size<int>.y()    },
+    },
+    {
+        {  chunk_size<int>.x(), -chunk_size<int>.y()    },
+        {  chunk_size<int>.x(),  0                      },
+        {  chunk_size<int>.x(),  chunk_size<int>.y()    },
+    },
+};
+//static_assert(chunk_offsets[0][0] == Vector2i(-1024, -1024));
+//static_assert(chunk_offsets[2][0] == Vector2i(1024, -1024));
+
+constexpr int8_t div_min = -div_factor*2, div_max = div_factor*2; // from src/dijkstra.cpp
+//for (int8_t y = div_min; y <= div_max; y++)
+//    for (int8_t x = div_min; x <= div_max; x++)
+
+struct pending_s
+{
+    chunk_coords_ c;
+};
+
+struct result_s
+{
+    chunk_coords_ c;
+    std::bitset<chunk_nbits> is_passable;
+};
+
+#if 0
+struct region_test : base_test
+{
+    result_s result;
+    pending_s pending;
+
+    ~region_test() noexcept override;
+
+    bool handle_key(app&, const key_event&, bool) override;
+    bool handle_mouse_click(app& a, const mouse_button_event& e, bool is_down) override;
+    bool handle_mouse_move(app& a, const mouse_move_event& e) override;
+    void draw_overlay(app& a) override;
+    void draw_ui(app&, float) override;
+    void update_pre(app&) override;
+    void update_post(app& a) override;
+};
+#endif
+
+} // namespace
+
+//Pointer<base_test> tests_data::make_test_region() { return Pointer<region_test>{InPlaceInit}; }
+
+} // namespace floormat::tests
-- 
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