1 files changed, 46 insertions, 0 deletions
diff --git a/src/tile-bbox.hpp b/src/tile-bbox.hpp
new file mode 100644
index 00000000..3275e22a
--- /dev/null
+++ b/src/tile-bbox.hpp
@@ -0,0 +1,46 @@
+#pragma once
+#include "src/tile-defs.hpp"
+#include "src/local-coords.hpp"
+#include <Magnum/Magnum.h>
+#include <Magnum/Math/Vector2.h>
+
+namespace floormat {
+
+namespace {
+constexpr float wall_depth = 8, wall_depth_2 = wall_depth*.5f;
+} // namespace
+
+constexpr Vector2 tile_start(size_t k)
+{
+    constexpr auto half_tile = Vector2(TILE_SIZE2)/2;
+    const local_coords coord{k};
+    return TILE_SIZE2 * Vector2(coord) - half_tile;
+}
+
+constexpr Pair<Vector2i, Vector2i> scenery_tile(local_coords local, Vector2b offset, Vector2b bbox_offset, Vector2ub bbox_size)
+{
+    auto center = iTILE_SIZE2 * Vector2i(local) + Vector2i(offset) + Vector2i(bbox_offset);
+    auto min = center - Vector2i(bbox_size/2);
+    auto size = Vector2i(bbox_size);
+    return { min, min + size, };
+}
+
+constexpr Pair<Vector2, Vector2> whole_tile(size_t k)
+{
+    auto min = tile_start(k);
+    return { min, min + TILE_SIZE2, };
+}
+
+constexpr Pair<Vector2, Vector2> wall_north(size_t k)
+{
+    auto min = tile_start(k) - Vector2(0, wall_depth_2);
+    return { min, min + Vector2(TILE_SIZE2[0], wall_depth), };
+}
+
+constexpr Pair<Vector2, Vector2> wall_west(size_t k)
+{
+    auto min = tile_start(k) - Vector2(wall_depth_2, 0);
+    return { min, min + Vector2(wall_depth, TILE_SIZE2[1]), };
+}
+
+} // namespace floormat