1 files changed, 6 insertions, 3 deletions
diff --git a/src/systems/terrain.h b/src/systems/terrain.h
index a38e45e..2e05a14 100644
--- a/src/systems/terrain.h
+++ b/src/systems/terrain.h
@@ -23,12 +23,14 @@ typedef struct Heightmap {
   Str8 filepath;
   u32x2 pixel_dimensions;
   void* image_data;
+  u32 num_channels;
   bool is_uploaded;
 } Heightmap;
 
  typedef struct Terrain_Storage {
   // arena terrain_allocator;
   u32x2 grid_dimensions;
+  f32 grid_scale;
   u32 num_vertices;
   Heightmap heightmap;  // NULL = no heightmap
   GPU_Renderpass* hmap_renderpass;
@@ -37,6 +39,7 @@ typedef struct Heightmap {
   bool hmap_loaded;
   BufferHandle vertex_buffer;
   BufferHandle index_buffer;
+  u32 indices_count;
 } Terrain_Storage;
 
 // --- Public API
@@ -46,7 +49,7 @@ PUB void Terrain_Draw(
     Terrain_Storage* storage);  // NOTE: For now it renders directly to main framebuffer
 
 /** @brief Sets the active heightmap to be rendered and collided against. */
-PUB void Terrain_LoadHeightmap(Terrain_Storage* storage, Heightmap hmap, bool free_on_upload);
+PUB void Terrain_LoadHeightmap(Terrain_Storage* storage, Heightmap hmap, f32 grid_scale, bool free_on_upload);
 PUB Heightmap Heightmap_FromImage(Str8 filepath);
 PUB Heightmap Heightmap_FromPerlin(/* TODO: perlin noise generation parameters */);
 
@@ -58,10 +61,10 @@ PUB bool Terrain_IsActive();  // checks whether we have a loaded heightmap and i
 
 /** @brief Get the height (the Y component) for a vertex at a particular coordinate in the heightmap
  */
-f32 Heightmap_HeightXZ(Heightmap* hmap, f32 x, f32 z);
+f32 Heightmap_HeightXZ(const Heightmap* hmap, u32 x, u32 z);
 
 /** @brief Calculate the normal vector of a vertex at a particular coordinate in the heightmap */
-Vec3 Heightmap_NormalXZ(Heightmap* hmap, f32 x, f32 z);
+Vec3 Heightmap_NormalXZ(const Heightmap* hmap, f32 x, f32 z);
 
 // /** @brief Generate the `geometry_data` for a heightmap ready to be uploaded to the GPU */
 // Geometry geo_heightmap(arena* a, Heightmap heightmap);