From a07a4bbb91bc5bd058b4069f64d14812393962b1 Mon Sep 17 00:00:00 2001
From: Faerbit <faerbit@gmail.com>
Date: Sat, 21 Mar 2015 15:05:22 +0100
Subject: [PATCH] Commiting unfinished work.

---
 game/chunk.cc    | 21 +++++++++++++++------
 game/chunk.hh    |  4 +++-
 game/graphics.cc | 46 ++++++++++++++++++++++++++--------------------
 game/graphics.hh |  3 ++-
 game/level.cc    | 22 +++++++++++++++++++---
 game/level.hh    |  7 ++++++-
 game/material.cc | 15 +++++++++++++--
 game/material.hh |  5 +++++
 8 files changed, 89 insertions(+), 34 deletions(-)

diff --git a/game/chunk.cc b/game/chunk.cc
index 7d20fb4..87f6374 100644
--- a/game/chunk.cc
+++ b/game/chunk.cc
@@ -16,12 +16,21 @@ void Chunk::render(SharedShaderProgram shader, bool lightingPass, bool texturePa
     }
 }
 
-void Chunk::enqueueObjects(std::vector<std::vector<Object*>>* renderQueue) {
-    for(unsigned int i = 0; i<objects.size(); i++) {
-        renderQueue->at(objects.at(i)->getMaterial()->getTextureUnit() - 2).push_back(objects.at(i));
-    }
-}
-
 void Chunk::addObject(Object* object) {
     objects.push_back(object);
 }
+
+void Chunk::sortObjects(int materialCount) {
+    // init
+    sortedObjects = std::vector<std::vector<Object*>>(materialCount);
+    for(unsigned int i = 0; i<sortedObjects.size(); i++) {
+        sortedObjects.at(i) = std::vector<Object*>();
+    }
+    for(unsigned int i = 0; i<objects.size(); i++){
+        sortedObjects.at(objects.at(i)->getMaterial()->getMaterialId()).push_back(objects.at(i));
+    }
+}
+
+std::vector<std::vector<Object*>>* Chunk::getSortedObjects() {
+    return &sortedObjects;
+}
diff --git a/game/chunk.hh b/game/chunk.hh
index f6d0510..1739f45 100644
--- a/game/chunk.hh
+++ b/game/chunk.hh
@@ -12,7 +12,9 @@ class Chunk {
         void render(SharedShaderProgram shader, bool lightingPass, bool texturePass,
             glm::mat4* viewProjcetionMatrix, std::vector<glm::mat4>* additionalMatrices=0);
         void addObject(Object* object);
-        void enqueueObjects(std::vector<std::vector<Object*>>* renderQueue);
+        void sortObjects(int textureUnits);
+        std::vector<std::vector<Object*>>* getSortedObjects();
     private:
         std::vector<Object*> objects;
+        std::vector<std::vector<Object*>> sortedObjects;
 };
diff --git a/game/graphics.cc b/game/graphics.cc
index 2897768..7c93229 100644
--- a/game/graphics.cc
+++ b/game/graphics.cc
@@ -198,10 +198,11 @@ void Graphics::init(Level* level) {
     lightingShader->setUniform("fogColorNight", level->getFogColourNight());
     lightingShader->setUniform("ambientColor", level->getAmbientLight());
 
-    renderQueue = std::vector<std::vector<Object*>>(Material::getAllTextures()->size());
-    for (unsigned int i = 0; i<renderQueue.size(); i++) {
-        renderQueue.at(i) = std::vector<Object*>();
-    }
+    level->sortObjects(Material::getAllMaterials()->size());
+    #ifdef SAXUM_DEBUG
+        std::cout << "There were " << Material::getAllMaterials()->size()
+                <<  " materials used in this level." << std::endl;
+    #endif
 }
 
 void Graphics::bindTextureUnits(){
@@ -491,23 +492,24 @@ void Graphics::render(double time)
 
         if (renderWorld) {
             // render the level
-            level->enqueueObjects(&renderQueue);
-            for (unsigned int i = 0; i<renderQueue.size(); i++) {
-                if (renderQueue.at(i).size() != 0) {
-                    Material* material = renderQueue.at(i).at(0)->getMaterial();
-                    if (material->isMoving()) {
-                        lightingShader->setUniform("movingTexture", true);
+            level->enqueueObjects(this);
+            for (unsigned int i = 0; i<Material::getAllTextures()->size(); i++) {
+                Material* material = &Material::getAllTextures()->at(i);
+                if (material->isMoving()) {
+                    lightingShader->setUniform("movingTexture", true);
+                }
+                else {
+                    lightingShader->setUniform("movingTexture", false);
+                }
+                lightingShader->setUniform("uTexture", material->getTextureUnit());
+                lightingShader->setUniform("ambientFactor", material->getAmbientFactor());
+                lightingShader->setUniform("diffuseFactor", material->getDiffuseFactor());
+                lightingShader->setUniform("specularFactor", material->getSpecularFactor());
+                lightingShader->setUniform("shininess", material->getShininess());
+                for(unsigned int j = 0; j<renderQueue.size(); j++) {
+                    for(unsigned int k = 0; k<renderQueue.at(j)->at(i).size(); k++) {
+                        renderQueue.at(j)->at(i).at(k)->render(lightingShader, true, false, &lightingViewProjectionMatrix, &depthBiasVPs);
                     }
-                    else {
-                        lightingShader->setUniform("movingTexture", false);
-                    }
-                    lightingShader->setUniform("uTexture", material->getTextureUnit());
-                    lightingShader->setUniform("ambientFactor", material->getAmbientFactor());
-                    lightingShader->setUniform("diffuseFactor", material->getDiffuseFactor());
-                    lightingShader->setUniform("specularFactor", material->getSpecularFactor());
-                    lightingShader->setUniform("shininess", material->getShininess());
-                    for(unsigned int j = 0; j<renderQueue.at(i).size(); j++) {
-                        renderQueue.at(i).at(j)->render(lightingShader, true, false, &lightingViewProjectionMatrix, &depthBiasVPs);
                     }
                 }
             }
@@ -750,3 +752,7 @@ void Graphics::setRenderWorld(bool state) {
 bool Graphics::getRenderWorld() {
     return renderWorld;
 }
+
+void Graphics::enqueueObjects(std::vector<std::vector<Object*>>* queue){
+    renderQueue.push_back(queue);
+}
diff --git a/game/graphics.hh b/game/graphics.hh
index ea5ad44..e0f3fab 100644
--- a/game/graphics.hh
+++ b/game/graphics.hh
@@ -33,6 +33,7 @@ class Graphics {
         bool getRenderFlames();
         bool getRenderDebug();
         bool getRenderWorld();
+        void enqueueObjects(std::vector<std::vector<Object*>>* queue);
     private:
         void bindTextureUnits();
         void updateLights();
@@ -88,7 +89,7 @@ class Graphics {
         SharedArrayBuffer debug_ab;
         SharedVertexArrayObject debug_vao;
         SharedShaderProgram debugShader;
-        std::vector<std::vector<Object*>> renderQueue;
+        std::vector<std::vector<std::vector<Object*>>*> renderQueue;
 };
 
 #endif
diff --git a/game/level.cc b/game/level.cc
index 83e1158..71666b0 100644
--- a/game/level.cc
+++ b/game/level.cc
@@ -1,6 +1,7 @@
 #include "level.hh"
 #include "loader.hh"
 #include <string>
+#include "graphics.hh"
 
 Level::Level(std::string xmlFilePath) {
     // default value
@@ -101,7 +102,7 @@ void Level::render(ACGL::OpenGL::SharedShaderProgram shader, bool lightingPass,
     }
 }
 
-void Level::enqueueObjects(std::vector<std::vector<Object*>>* renderQueue) {
+void Level::enqueueObjects(Graphics* graphics) {
     int renderDistance = 0;
     if ((int)farPlane % chunkSize == 0) {
         renderDistance = (((int)skydomeSize)+chunkSize/2)/chunkSize;
@@ -129,11 +130,26 @@ void Level::enqueueObjects(std::vector<std::vector<Object*>>* renderQueue) {
     }
     for(unsigned int i = xStart; i<=xEnd; i++) {
         for(unsigned int j = zStart; j<=zEnd; j++) {
-            chunks.at(i).at(j).enqueueObjects(renderQueue);
+            graphics->enqueueObjects(chunks.at(i).at(j).getSortedObjects());
         }
     }
+    graphics->enqueueObjects(&sortedCrossChunkObjects);
+}
+
+void Level::sortObjects(int materialCount) {
+    for(unsigned int i = 0; i<chunks.size(); i++) {
+        for(unsigned int j = 0; j<chunks.at(i).size(); j++) {
+            chunks.at(i).at(j).sortObjects(materialCount);
+        }
+    }
+    // init
+    sortedCrossChunkObjects = std::vector<std::vector<Object*>>(materialCount);
+    for(unsigned int i = 0; i<sortedCrossChunkObjects.size(); i++) {
+       sortedCrossChunkObjects.at(i) = std::vector<Object*>(); 
+    }
     for(unsigned int i = 0; i<crossChunkObjects.size(); i++) {
-        renderQueue->at(crossChunkObjects.at(i)->getMaterial()->getTextureUnit() - 2).push_back(crossChunkObjects.at(i));
+        sortedCrossChunkObjects.at(crossChunkObjects.at(i)->getMaterial()->getMaterialId())
+            .push_back(crossChunkObjects.at(i));
     }
 }
 
diff --git a/game/level.hh b/game/level.hh
index bc3980a..183d8a2 100644
--- a/game/level.hh
+++ b/game/level.hh
@@ -21,6 +21,9 @@ extern "C" {
 }
 #include "LuaBridge.h"
 
+// forward declaration
+class Graphics;
+
 class Level {
     public:
         Level(std::string xmlFilePath);
@@ -77,10 +80,12 @@ class Level {
         void generateChunks(int chunkSize);
         std::vector<std::vector<Chunk>>* getChunks();
         void addToSpecificChunk(Object* object, int xPosition, int zPosition);
-        void enqueueObjects(std::vector<std::vector<Object*>>* renderQueue);
+        void enqueueObjects(Graphics* graphics);
+        void sortObjects(int materialCount);
     private:
         lua_State* luaState=nullptr;
         std::vector<Object*> crossChunkObjects;
+        std::vector<std::vector<Object*>> sortedCrossChunkObjects;
         std::vector<Object*> allObjects;
         std::vector<Object*> physicsObjects;
         std::vector<std::vector<Chunk>> chunks;
diff --git a/game/material.cc b/game/material.cc
index 63cbc21..248ac71 100644
--- a/game/material.cc
+++ b/game/material.cc
@@ -2,6 +2,8 @@
 
 std::set<SharedTexture2D> Material::allTexturesSet = std::set<SharedTexture2D>();
 std::vector<SharedTexture2D> Material::allTexturesVector = std::vector<SharedTexture2D>();
+std::set<Material> Material::allMaterialsSet = std::set<Material>();
+std::vector<Material> Material::allMaterialsVector = std::vector<Material*>();
 
 Material::Material(std::string filePath, float ambientFactor, float diffuseFactor,
         float specularFactor, float shininess, bool movingTexture) {
@@ -14,15 +16,24 @@ Material::Material(std::string filePath, float ambientFactor, float diffuseFacto
     this->specularFactor = specularFactor;
     this->shininess = shininess;
     this->movingTexture = movingTexture;
-    unsigned int count = allTexturesSet.size();
+    unsigned int textureCount = allTexturesSet.size();
     allTexturesSet.insert(reference);
-    if (allTexturesSet.size() != count) {
+    if (allTexturesSet.size() != textureCount) {
         allTexturesVector.push_back(reference);
     }
     textureUnit = std::distance(Material::getAllTextures()->begin(),
             std::find(std::begin(*Material::getAllTextures()),
         // first two texture units are used by the loading screen
             std::end(*Material::getAllTextures()), reference)) + 2;
+
+    unsigned int materialCount = allMaterialsSet.size();
+    allMaterialsSet.insert(*this);
+    if (allMaterialsSet.size() != materialCount) {
+        allMaterialsVector.push_back(*this);
+    }
+    materialId = std::distance(Material::getAllMaterials()->begin(),
+            std::find(std::begin(*Material::getAllMaterials()),
+            std::end(*Material::getAllMaterials()), *this));
 }
 
 Material::Material() {
diff --git a/game/material.hh b/game/material.hh
index cc9fc5d..59f6696 100644
--- a/game/material.hh
+++ b/game/material.hh
@@ -22,10 +22,13 @@ class Material{
         float getShininess();
         bool isMoving();
         static std::vector<SharedTexture2D>* getAllTextures();
+        static std::vector<Material*>* getAllMaterials();
         int getTextureUnit();
+        int getMaterialId();
 
     private:
         int textureUnit;
+        int materialId;
         ACGL::OpenGL::SharedTexture2D reference;
         float ambientFactor;
         float diffuseFactor;
@@ -34,6 +37,8 @@ class Material{
         bool movingTexture;
         static std::set<SharedTexture2D> allTexturesSet;
         static std::vector<SharedTexture2D> allTexturesVector;
+        static std::set<Material> allMaterialsSet;
+        static std::vector<Material> allMaterialsVector;
 };
 
 #endif