src: add point distance tests

2 files changed, 29 insertions, 1 deletions

diff --git a/src/point.cpp b/src/point.cpp
index 3e970ba3..7b810fca 100644
--- a/src/point.cpp
+++ b/src/point.cpp
@@ -1,5 +1,6 @@
-#include "point.hpp"
 #include "compat/int-hash.hpp"
+#include "point.inl"
+#include "tile-constants.hpp"
 
 namespace floormat {
 
@@ -35,4 +36,30 @@ Debug& operator<<(Debug& dbg, const point& pt)
     return dbg;
 }
 
+namespace {
+
+constexpr auto chunk_size = iTILE_SIZE2 * TILE_MAX_DIM;
+
+static_assert(point::distance_l2(
+    point{{ 1,  2, 0}, {3, 4}, {32, 32}},
+    point{{ 0,  0, 0}, {0, 0}, {32, 32}}
+) == (uint32_t)Math::abs((Vector2i(1, 2)*chunk_size + Vector2i{3, 4} * iTILE_SIZE2 + Vector2i{0, 0}).sum()));
+
+static_assert(point::distance_l2(
+    point{{ 0,  0, 0}, {0, 0}, {30, 30}},
+    point{{ 1,  2, 0}, {3, 4}, {31, 31}}
+) == (uint32_t)Math::abs((Vector2i(1, 2)*chunk_size + Vector2i{3, 4} * iTILE_SIZE2 + Vector2i{1, 1}).sum()));
+
+static_assert(point::distance_l2(
+    point{{ 2,  3, 0}, {4, 5}, {32, 32}},
+    point{{ 1,  2, 0}, {3, 4}, {31, 31}}
+) == (uint32_t)Math::abs((Vector2i(1, 1)*chunk_size + Vector2i{1, 1} * iTILE_SIZE2 + Vector2i{1, 1}).sum()));
+
+static_assert(point::distance_l2(
+    point{{ 1,  2, 0}, {3, 4}, {31, 31}},
+    point{{ 2,  3, 0}, {4, 5}, {32, 32}}
+) == (uint32_t)Math::abs((Vector2i(1, 1)*chunk_size + Vector2i{1, 1} * iTILE_SIZE2 + Vector2i{1, 1}).sum()));
+
+} // namespace
+
 } // namespace floormat
diff --git a/src/point.inl b/src/point.inl
index dbcfd124..4fd4bb07 100644
--- a/src/point.inl
+++ b/src/point.inl
@@ -1,4 +1,5 @@
 #pragma once
+#include "src/tile-constants.hpp"
 #include "point.hpp"
 #include <mg/Functions.h>