1 files changed, 35 insertions, 0 deletions
diff --git a/game/shared/ray_dda.hh b/game/shared/ray_dda.hh
new file mode 100644
index 0000000..9b4374e
--- /dev/null
+++ b/game/shared/ray_dda.hh
@@ -0,0 +1,35 @@
+#ifndef SHARED_RAY_DDA
+#define SHARED_RAY_DDA 1
+#pragma once
+
+#include "shared/types.hh"
+
+class Dimension;
+
+class RayDDA final {
+public:
+    explicit 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);
+
+    voxel_id 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;
+};
+
+#endif /* SHARED_RAY_DDA */