From 9f23f65ec631bcd08f200b3ef517da8acf8d6b17 Mon Sep 17 00:00:00 2001
From: Omniscient <omniscient.oce@gmail.com>
Date: Thu, 11 Jul 2024 18:03:34 +1000
Subject: new

---
 src/systems/terrain.h | 44 ++++++++++++++++++--------------------------
 1 file changed, 18 insertions(+), 26 deletions(-)

(limited to 'src/systems/terrain.h')

diff --git a/src/systems/terrain.h b/src/systems/terrain.h
index 888b6f4..a65ecec 100644
--- a/src/systems/terrain.h
+++ b/src/systems/terrain.h
@@ -1,14 +1,10 @@
 /**
  * @file terrain.h
- * @author your name (you@domain.com)
  * @brief
- * @version 0.1
- * @date 2024-04-27
- *
- * @copyright Copyright (c) 2024
- *
  */
 
+#pragma once
+
 /*
 Future:
  - Chunked terrain
@@ -22,37 +18,33 @@ Future:
 #include "render.h"
 #include "str.h"
 
-typedef struct heightmap {
+typedef struct Heightmap {
   str8 filepath;
   u32x2 size;
   void* image_data;
   bool is_uploaded;
-} heightmap;
+} Heightmap;
+
+typedef struct Terrain_Storage Terrain_Storage;
+
+// --- Public API
+PUB bool Terrain_Init(Terrain_Storage* storage);
+PUB void Terrain_Shutdown(Terrain_Storage* storage);
+PUB void Terrain_Run(Terrain_Storage* storage); // NOTE: For now it renders directly to main framebuffer
 
-typedef struct terrain_state {
-  arena terrain_allocator;
-  heightmap* heightmap;  // NULL = no heightmap
-  gpu_renderpass* hmap_renderpass;
-  gpu_pipeline* hmap_pipeline;
-} terrain_state;
+PUB Heightmap Heightmap_FromImage(str8 filepath);
+PUB Heightmap Heightmap_FromPerlin(/* TODO: perlin noise generation parameters */);
 
-bool terrain_system_init(terrain_state* state);
-void terrain_system_shutdown(terrain_state* state);
-void terrain_system_render_hmap(renderer* rend, terrain_state* state);
+// --- Internal
 
-heightmap heightmap_from_image(str8 filepath);
-heightmap heightmap_from_perlin(/* TODO: perlin noise generation parameters */);
+// TODO: void terrain_system_render_hmap(renderer* rend, terrain_state* state);
 
 /** @brief Get the height (the Y component) for a vertex at a particular coordinate in the heightmap
  */
-f32 heightmap_height_at_xz(heightmap* hmap, f32 x, f32 z);
+f32 Heightmap_HeightXZ(Heightmap* hmap, f32 x, f32 z);
 
 /** @brief Calculate the normal vector of a vertex at a particular coordinate in the heightmap */
-vec3 heightmap_normal_at_xz(heightmap* hmap, f32 x, f32 z);
+Vec3 Heightmap_NormalXZ(Heightmap* hmap, f32 x, f32 z);
 
 /** @brief Generate the `geometry_data` for a heightmap ready to be uploaded to the GPU */
-geometry_data geo_heightmap(arena* a, heightmap heightmap);
-
-// somewhere there will be an easy way to add a heightmap
-
-// TODO: scene_add_heightmap
+Geometry geo_heightmap(arena* a, Heightmap heightmap);
-- 
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