From 8b9ca5cc3a6d6505183d48216a7c22572592663f Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Sun, 4 Feb 2024 17:29:46 +0100
Subject: wip

---
 bench/raycast.cpp | 20 ++++++++++++++++++++
 test/raycast.cpp  | 15 +++++++++++++++
 2 files changed, 35 insertions(+)
 create mode 100644 bench/raycast.cpp

diff --git a/bench/raycast.cpp b/bench/raycast.cpp
new file mode 100644
index 00000000..21b1643d
--- /dev/null
+++ b/bench/raycast.cpp
@@ -0,0 +1,20 @@
+#include "src/raycast.hpp"
+#include <benchmark/benchmark.h>
+
+namespace floormat {
+
+namespace {
+
+#warning TODO!
+
+[[maybe_unused]] void Raycast(benchmark::State& state)
+{
+    for (auto _ : state)
+        (void)0;
+}
+
+BENCHMARK(Raycast)->Unit(benchmark::kMicrosecond);
+
+} // namespace
+
+} // namespace floormat
diff --git a/test/raycast.cpp b/test/raycast.cpp
index 672dc407..1793f5b6 100644
--- a/test/raycast.cpp
+++ b/test/raycast.cpp
@@ -1,8 +1,23 @@
 #include "app.hpp"
 #include "src/raycast.hpp"
+#include "src/world.hpp"
 
 namespace floormat {
 
+namespace {
+
+#warning TODO!
+
+void test1()
+{
+    // try reproducing the evil bug in src/raycast.cpp:285:
+    //   c = w.at({last_ch + Vector2i{i - 1, j - 1}});
+    // was incorrectly:
+    //   c = w.at({last_ch - Vector2i{i - 1, j - 1}});
+}
+
+} // namespace
+
 void test_app::test_raycast()
 {
 
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