1 files changed, 38 insertions, 0 deletions
diff --git a/src/game/shared/world/ray_dda.hh b/src/game/shared/world/ray_dda.hh
new file mode 100644
index 0000000..0f548ba
--- /dev/null
+++ b/src/game/shared/world/ray_dda.hh
@@ -0,0 +1,38 @@
+#pragma once
+
+#include "shared/types.hh"
+
+namespace world
+{
+class Dimension;
+class Voxel;
+} // namespace world
+
+namespace world
+{
+class RayDDA final {
+public:
+    RayDDA(void) = default;
+    explicit RayDDA(const Dimension* dimension, const chunk_pos& start_chunk, const glm::fvec3& start_fpos, const glm::fvec3& direction);
+    explicit RayDDA(const Dimension& dimension, const chunk_pos& start_chunk, const glm::fvec3& start_fpos, const glm::fvec3& direction);
+
+    void reset(const Dimension* dimension, const chunk_pos& start_chunk, const glm::fvec3& start_fpos, const glm::fvec3& direction);
+    void reset(const Dimension& dimension, const chunk_pos& start_chunk, const glm::fvec3& start_fpos, const glm::fvec3& direction);
+
+    const Voxel* step(void);
+
+public:
+    const Dimension* dimension;
+    chunk_pos start_chunk;
+    glm::fvec3 start_fpos;
+    glm::fvec3 direction;
+
+    glm::fvec3 delta_dist;
+    glm::fvec3 side_dist;
+    voxel_pos vstep;
+
+    double distance;
+    voxel_pos vnormal;
+    voxel_pos vpos;
+};
+} // namespace world