1 files changed, 122 insertions, 0 deletions
diff --git a/Source/Graphics/terrain.h b/Source/Graphics/terrain.h
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+++ b/Source/Graphics/terrain.h
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+//-----------------------------------------------------------------------------
+//           Name: terrain.h
+//      Developer: Wolfire Games LLC
+//    Description:
+//        License: Read below
+//-----------------------------------------------------------------------------
+//
+//
+//   Copyright 2022 Wolfire Games LLC
+//
+//   Licensed under the Apache License, Version 2.0 (the "License");
+//   you may not use this file except in compliance with the License.
+//   You may obtain a copy of the License at
+//
+//       http://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+//
+//-----------------------------------------------------------------------------
+#pragma once
+
+#include <Graphics/model.h>
+#include <Graphics/textures.h>
+#include <Graphics/heightmap.h>
+#include <Graphics/textureref.h>
+#include <Graphics/detailobjectsurface.h>
+
+#include <Math/vec2.h>
+#include <Math/vec3.h>
+#include <Math/vec4.h>
+
+#include <Asset/Asset/material.h>
+#include <Asset/Asset/averagecolorasset.h>
+
+#include <Compat/filepath.h>
+#include <Internal/levelxml.h>
+
+class Sky;
+class LoadingText;
+class SceneGraph;
+
+class Terrain {
+    private:
+        HeightmapImage heightmap_;
+
+        const char* shader;
+
+        bool minimal;
+        int model_id;
+
+        void CalculateHighResVertices(Model &terrain_high_detail_model);
+        void CalculateHighResFaces(Model &terrain_high_detail_model);
+        
+        void CalcWorkingPoints(vec3 cam_pos);
+
+        void CalculateSimplifiedTerrain();
+        void CalculateMinimalTerrain();
+        bool LoadCachedSimplifiedTerrain();
+
+    public:
+        std::list<Model> terrain_patches;
+        std::list<Model> edge_terrain_patches;
+        std::list<DetailObjectSurface*> detail_object_surfaces;
+        std::set<AverageColorRef> average_colors;
+
+        void GLInit(Sky* sky);
+        TextureAssetRef normal_map_ref;
+        TextureAssetRef color_texture_ref;
+        TextureAssetRef weight_perturb_ref;
+
+        TextureRef baked_texture_ref;
+        TextureAssetRef baked_texture_asset;
+
+        TextureRef detail_texture_ref;  // array texture
+        TextureRef detail_normal_texture_ref; // array texture
+        std::vector<vec4> detail_texture_color;
+        std::vector<vec4> detail_texture_color_srgb;
+        TextureAssetRef detail_texture_weights;
+        TextureAssetRef detail_texture_tint;
+        
+        ImageSamplerRef weight_bitmap;
+        ImageSamplerRef color_bitmap;
+
+        std::string color_path;
+        
+        std::vector<DetailMapInfo> detail_maps_info;
+        std::vector<DetailObjectLayer> detail_object_layers;
+    
+        std::string level_name;
+        std::string weight_map_path;
+
+        int terrain_texture_size;
+        GLuint framebuffer;
+
+        void BakeTerrainTexture(GLuint framebuffer, const TextureRef& light_cube);
+        Model& GetModel() const;
+        void drawLayer(int which);
+        void Load(const char* name, const std::string& model_override = NULL);
+        void LoadMinimal(const char* name, const std::string& model_override = NULL);
+        void GetShaderNames(std::map<std::string, int>& preload_shaders);
+        int lineCheck(const vec3& start, const vec3& end, vec3* point, vec3 *normal=0);
+        ~Terrain();
+        Terrain();
+
+        const MaterialRef GetMaterialAtPoint(vec3 point, int *tri = NULL);
+        void CalcDetailTextures();
+        void CalculatePatches();
+        void Dispose();
+        void HandleMaterialEvent( const std::string &the_event, const vec3 &event_pos, int* tri );
+        vec4 SampleWeightMapAtPoint( vec3 point, int* tri = NULL );
+        vec2 GetUVAtPoint(const vec3 &point, int* tri = NULL) const;
+        vec3 SampleColorMapAtPoint( vec3 point, int *tri );
+        void SetDetailObjectLayers( const std::vector<DetailObjectLayer> &detail_object_layers );
+        void SetDetailTextures( const std::vector<DetailMapInfo> &detail_maps_info );
+
+        void SetColorTexture(const char* path);
+        void SetWeightTexture(const char* path);
+};