Merge pull request #20 from StillGreen-san/fix-selected-block-text

fix "Selected Block" text display

ScuffedMinecraft/CMakeLists.txt

@@ -18,5 +18,9 @@ add_custom_target(copy_assets ALL
 
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
+# global dependency directories
+include_directories(../Dependencies/include/)
+link_directories(../Dependencies/lib/)
+
 add_subdirectory(vendor/imgui)
 add_subdirectory(src)

ScuffedMinecraft/ScuffedMinecraft.vcxproj

@@ -130,6 +130,7 @@
       <SubSystem>Console</SubSystem>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <AdditionalDependencies>glfw3.lib;opengl32.lib;$(CoreLibraryDependencies);%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalOptions>/ignore:4099 %(AdditionalOptions)</AdditionalOptions>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
@@ -148,6 +149,7 @@
       <OptimizeReferences>true</OptimizeReferences>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <AdditionalDependencies>glfw3.lib;opengl32.lib;$(CoreLibraryDependencies);%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalOptions>/ignore:4099 %(AdditionalOptions)</AdditionalOptions>
     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>
@@ -155,11 +157,14 @@
     <ClCompile Include="src\Block.cpp" />
     <ClCompile Include="src\Camera.cpp" />
     <ClCompile Include="src\Chunk.cpp" />
+    <ClCompile Include="src\ChunkData.cpp" />
+    <ClCompile Include="src\ChunkPos.cpp" />
     <ClCompile Include="src\NoiseSettings.cpp" />
+    <ClCompile Include="src\Physics.cpp" />
     <ClCompile Include="src\Planet.cpp" />
     <ClCompile Include="src\Shader.cpp" />
     <ClCompile Include="src\SurfaceFeature.cpp" />
-    <ClCompile Include="src\TupleHash.h" />
+    <ClCompile Include="src\ChunkPosHash.h" />
     <ClCompile Include="src\WorldGen.cpp" />
     <ClCompile Include="src\WorldGen.h" />
     <ClCompile Include="vendor\glad.c" />
@@ -176,7 +181,10 @@
     <ClInclude Include="src\Blocks.h" />
     <ClInclude Include="src\Camera.h" />
     <ClInclude Include="src\Chunk.h" />
+    <ClInclude Include="src\ChunkData.h" />
+    <ClInclude Include="src\ChunkPos.h" />
     <ClInclude Include="src\NoiseSettings.h" />
+    <ClInclude Include="src\Physics.h" />
     <ClInclude Include="src\Planet.h" />
     <ClInclude Include="src\Shader.h" />
     <ClInclude Include="src\SurfaceFeature.h" />
@@ -196,6 +204,10 @@
   <ItemGroup>
     <None Include="assets\shaders\billboard_frag.glsl" />
     <None Include="assets\shaders\billboard_vert.glsl" />
+    <None Include="assets\shaders\block_outline_frag.glsl" />
+    <None Include="assets\shaders\block_outline_vert.glsl" />
+    <None Include="assets\shaders\crosshair_frag.glsl" />
+    <None Include="assets\shaders\crosshair_vert.glsl" />
     <None Include="assets\shaders\framebuffer_frag.glsl" />
     <None Include="assets\shaders\framebuffer_vert.glsl" />
     <None Include="assets\shaders\main_frag.glsl" />
@@ -205,6 +217,7 @@
   </ItemGroup>
   <ItemGroup>
     <Image Include="assets\sprites\block_map.png" />
+    <Image Include="assets\sprites\crosshair.png" />
   </ItemGroup>
   <ItemGroup>
     <Text Include="vendor\imgui\LICENSE.txt" />

ScuffedMinecraft/ScuffedMinecraft.vcxproj.filters

@@ -33,7 +33,7 @@
     <ClCompile Include="src\Block.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
-    <ClCompile Include="src\TupleHash.h">
+    <ClCompile Include="src\ChunkPosHash.h">
       <Filter>Source Files</Filter>
     </ClCompile>
     <ClCompile Include="src\WorldGen.h">
@@ -72,6 +72,15 @@
     <ClCompile Include="src\SurfaceFeature.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="src\Physics.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="src\ChunkPos.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="src\ChunkData.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="src\Shader.h">
@@ -134,6 +143,15 @@
     <ClInclude Include="src\Vertex.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="src\Physics.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="src\ChunkPos.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="src\ChunkData.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <None Include="assets\shaders\main_vert.glsl" />
@@ -144,11 +162,18 @@
     <None Include="assets\shaders\billboard_frag.glsl" />
     <None Include="assets\shaders\framebuffer_vert.glsl" />
     <None Include="assets\shaders\framebuffer_frag.glsl" />
+    <None Include="assets\shaders\block_outline_vert.glsl" />
+    <None Include="assets\shaders\block_outline_frag.glsl" />
+    <None Include="assets\shaders\crosshair_frag.glsl" />
+    <None Include="assets\shaders\crosshair_vert.glsl" />
   </ItemGroup>
   <ItemGroup>
     <Image Include="assets\sprites\block_map.png">
       <Filter>Resource Files</Filter>
     </Image>
+    <Image Include="assets\sprites\crosshair.png">
+      <Filter>Resource Files</Filter>
+    </Image>
   </ItemGroup>
   <ItemGroup>
     <Text Include="vendor\imgui\LICENSE.txt" />

ScuffedMinecraft/assets/shaders/block_outline_frag.glsl

@@ -0,0 +1,10 @@
+#version 330 core
+
+out vec4 FragColor;
+
+uniform float time;
+
+void main()
+{
+	FragColor = vec4(0.0, 0.0, 0.0, 1.0);
+}

ScuffedMinecraft/assets/shaders/block_outline_vert.glsl

@@ -0,0 +1,12 @@
+#version 330 core
+
+layout (location = 0) in vec3 aPos;
+
+uniform vec3 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+void main()
+{
+	gl_Position = projection * view * vec4(aPos + model, 1.0);
+}

ScuffedMinecraft/assets/shaders/crosshair_frag.glsl

@@ -0,0 +1,18 @@
+#version 330 core
+
+in vec2 TexCoord;
+
+out vec4 FragColor;
+
+uniform sampler2D tex;
+
+void main()
+{
+	vec4 texResult = texture(tex, TexCoord);
+
+	if (texResult.a == 0)
+		discard;
+
+	texResult.a = 0.8;
+	FragColor = texResult;
+}

ScuffedMinecraft/assets/shaders/crosshair_vert.glsl

@@ -0,0 +1,14 @@
+#version 330 core
+
+layout (location = 0) in vec2 inPos;
+layout (location = 1) in vec2 inTexCoords;
+
+uniform mat4 projection;
+
+out vec2 TexCoord;
+
+void main()
+{
+	gl_Position = projection * vec4(inPos, 0.0, 1.0);
+	TexCoord = inTexCoords;
+}

ScuffedMinecraft/src/Application.cpp

@@ -2,6 +2,13 @@
 #include "imgui_impl_glfw.h"
 #include "imgui_impl_opengl3.h"
 
+#ifdef LINUX
+#include <cstdlib>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#endif
+
 #include <glad/glad.h>
 #include <GLFW/glfw3.h>
 #define STB_IMAGE_IMPLEMENTATION
@@ -17,11 +24,13 @@
 #include "Camera.h"
 #include "Planet.h"
 #include "Blocks.h"
+#include "Physics.h"
 
 void framebufferSizeCallback(GLFWwindow* window, int width, int height);
 void processInput(GLFWwindow* window);
 void mouse_callback(GLFWwindow* window, double xpos, double ypos);
 void scroll_callback(GLFWwindow* window, double xoffset, double yoffset);
+void mouse_button_callback(GLFWwindow* window, int button, int action, int mods);
 
 float deltaTime = 0.0f;
 float lastFrame = 0.0f;
@@ -35,14 +44,21 @@ bool firstMouse = true;
 
 bool menuMode = false;
 bool escapeDown = false;
+bool f1Down = false;
 
+// Window settings
 float windowX = 1920;
 float windowY = 1080;
+bool vsync = true;
+
+uint16_t selectedBlock = 1;
+
+bool uiEnabled = true;
 
 Camera camera;
 
-// Window options
-#define VSYNC 1 // 0 for off, 1 for on
+GLuint framebufferTexture;
+GLuint depthTexture;
 
 float rectangleVertices[] =
 {
@@ -56,8 +72,66 @@ float rectangleVertices[] =
 	-1.0f,  1.0f,  0.0f, 1.0f
 };
 
-int main()
+float outlineVertices[] = 
 {
+	-.001f, -.001f, -.001f,  1.001f, -.001f, -.001f,
+    1.001f, -.001f, -.001f,  1.001f, 1.001f, -.001f,
+	1.001f, 1.001f, -.001f,  -.001f, 1.001f, -.001f,
+	-.001f, 1.001f, -.001f,  -.001f, -.001f, -.001f,
+	   		   		   							
+	-.001f, -.001f, -.001f,  -.001f, -.001f, 1.001f,
+	-.001f, -.001f, 1.001f,  -.001f, 1.001f, 1.001f,
+	-.001f, 1.001f, 1.001f,  -.001f, 1.001f, -.001f,
+	   		   		   							
+	1.001f, -.001f, -.001f,  1.001f, -.001f, 1.001f,
+	1.001f, -.001f, 1.001f,  1.001f, 1.001f, 1.001f,
+	1.001f, 1.001f, 1.001f,  1.001f, 1.001f, -.001f,
+	   		   		   							
+	-.001f, -.001f, 1.001f,  1.001f, -.001f, 1.001f,
+	-.001f, 1.001f, 1.001f,  1.001f, 1.001f, 1.001f,
+};
+
+float crosshairVertices[] =
+{
+	windowX / 2 - 13.5, windowY / 2 - 13.5,  0.0f, 0.0f,
+	windowX / 2 + 13.5, windowY / 2 - 13.5,  1.0f, 0.0f,
+	windowX / 2 + 13.5, windowY / 2 + 13.5,  1.0f, 1.0f,
+				  					 
+	windowX / 2 - 13.5, windowY / 2 - 13.5,  0.0f, 0.0f,
+	windowX / 2 - 13.5, windowY / 2 + 13.5,  0.0f, 1.0f,
+	windowX / 2 + 13.5, windowY / 2 + 13.5,  1.0f, 1.0f,
+};
+
+int main(int argc, char *argv[])
+{
+#ifdef LINUX
+	char* resolved_path = realpath(argv[0], NULL);
+	if (resolved_path == NULL) {
+		printf("%s: Please do not place binary in PATH\n", argv[0]);
+		exit(1);
+	}
+	size_t resolved_length = strlen(resolved_path);
+	// remove executable from path
+	for (size_t i = resolved_length; i > 0; i--) {
+		if (resolved_path[i] == '/' && resolved_path[i + 1] != 0) {
+			resolved_path[i + 1] = 0;
+			resolved_length = i;
+			break;
+		}
+	}
+	char* assets_path = (char*)malloc(resolved_length + strlen("assets") + 2);
+	strcpy(assets_path, resolved_path);
+	strcpy(assets_path + resolved_length + 1, "assets");
+	struct stat path_stat;
+	if (stat(assets_path, &path_stat) == -1 || !S_ISDIR(path_stat.st_mode)) {
+		printf("%s: Asset directory not found\n", argv[0]);
+		exit(1);
+	}
+	free(assets_path);
+
+	chdir(resolved_path);
+	free(resolved_path);
+#endif
 	// Initialize GLFW
 	glfwInit();
 	glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
@@ -73,7 +147,7 @@ int main()
 		return -1;
 	}
 	glfwMakeContextCurrent(window);
-	glfwSwapInterval(VSYNC);
+	glfwSwapInterval(vsync ? 1 : 0);
 
 	// Initialize GLAD
 	if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress))
@@ -87,6 +161,7 @@ int main()
 	glfwSetFramebufferSizeCallback(window, framebufferSizeCallback);
 	glfwSetCursorPosCallback(window, mouse_callback);
 	glfwSetScrollCallback(window, scroll_callback);
+	glfwSetMouseButtonCallback(window, mouse_button_callback);
 
 	glClearColor(0.6f, 0.8f, 1.0f, 1.0f);
 
@@ -115,12 +190,15 @@ int main()
 
 	Shader framebufferShader("assets/shaders/framebuffer_vert.glsl", "assets/shaders/framebuffer_frag.glsl");
 
+	Shader outlineShader("assets/shaders/block_outline_vert.glsl", "assets/shaders/block_outline_frag.glsl");
+
+	Shader crosshairShader("assets/shaders/crosshair_vert.glsl", "assets/shaders/crosshair_frag.glsl");
+
 	// Create post-processing framebuffer
 	unsigned int FBO;
 	glGenFramebuffers(1, &FBO);
 	glBindFramebuffer(GL_FRAMEBUFFER, FBO);
 
-	unsigned int framebufferTexture;
 	glGenTextures(1, &framebufferTexture);
 	glBindTexture(GL_TEXTURE_2D, framebufferTexture);
 	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, windowX, windowY, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
@@ -130,7 +208,6 @@ int main()
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 	glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, framebufferTexture, 0);
 
-	unsigned int depthTexture;
 	glGenTextures(1, &depthTexture);
 	glBindTexture(GL_TEXTURE_2D, depthTexture);
 	glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT, windowX, windowY, 0, GL_DEPTH_COMPONENT, GL_FLOAT, NULL);
@@ -159,6 +236,26 @@ int main()
 	glUniform1i(glGetUniformLocation(framebufferShader.ID, "screenTexture"), 0);
 	glUniform1i(glGetUniformLocation(framebufferShader.ID, "depthTexture"), 1);
 
+	unsigned int outlineVAO, outlineVBO;
+	glGenVertexArrays(1, &outlineVAO);
+	glGenBuffers(1, &outlineVBO);
+	glBindVertexArray(outlineVAO);
+	glBindBuffer(GL_ARRAY_BUFFER, outlineVBO);
+	glBufferData(GL_ARRAY_BUFFER, sizeof(outlineVertices), &outlineVertices, GL_STATIC_DRAW);
+	glEnableVertexAttribArray(0);
+	glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), (void*)0);
+
+	unsigned int crosshairVAO, crosshairVBO;
+	glGenVertexArrays(1, &crosshairVAO);
+	glGenBuffers(1, &crosshairVBO);
+	glBindVertexArray(crosshairVAO);
+	glBindBuffer(GL_ARRAY_BUFFER, crosshairVBO);
+	glBufferData(GL_ARRAY_BUFFER, sizeof(crosshairVertices), &crosshairVertices, GL_STATIC_DRAW);
+	glEnableVertexAttribArray(0);
+	glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(float), (void*)0);
+	glEnableVertexAttribArray(1);
+	glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(float), (void*)(2 * sizeof(float)));
+
 	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 
 	// Create terrain texture
@@ -188,6 +285,30 @@ int main()
 
 	stbi_image_free(data);
 
+	// Create crosshair texture
+	unsigned int crosshairTexture;
+	glGenTextures(1, &crosshairTexture);
+	glActiveTexture(GL_TEXTURE0);
+	glBindTexture(GL_TEXTURE_2D, crosshairTexture);
+
+	// Set texture parameters
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+
+	// Load Crosshair Texture
+	unsigned char* data2 = stbi_load("assets/sprites/crosshair.png", &width, &height, &nrChannels, 0);
+	if (data2)
+	{
+		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data2);
+		glGenerateMipmap(GL_TEXTURE_2D);
+	}
+	else
+	{
+		std::cout << "Failed to load texture\n";
+	}
+
+	stbi_image_free(data2);
+
 	// Create camera
 	camera = Camera(glm::vec3(0.0f, 25.0f, 0.0f));
 
@@ -195,6 +316,8 @@ int main()
 
 	Planet::planet = new Planet(&shader, &waterShader, &billboardShader);
 
+	glm::mat4 ortho = glm::ortho(0.0f, (float)windowX, (float)windowY, 0.0f, 0.0f, 10.0f);
+
 	// Initialize ImGui
 	IMGUI_CHECKVERSION();
 	ImGui::CreateContext();
@@ -220,7 +343,7 @@ int main()
 			highestFps = fps;
 		fpsCount++;
 		std::chrono::steady_clock::time_point currentTimePoint = std::chrono::steady_clock::now();
-		if (std::chrono::duration_cast<std::chrono::milliseconds>(currentTimePoint - fpsStartTime).count() > 1000)
+		if (std::chrono::duration_cast<std::chrono::seconds>(currentTimePoint - fpsStartTime).count() >= 1)
 		{
 			avgFps = fpsCount;
 			lowestFps = -1;
@@ -231,6 +354,8 @@ int main()
 
 		waterShader.use();
 		waterShader.setFloat("time", currentFrame);
+		outlineShader.use();
+		outlineShader.setFloat("time", currentFrame);
 
 		// Input
 		processInput(window);
@@ -272,24 +397,60 @@ int main()
 		projectionLoc = glGetUniformLocation(billboardShader.ID, "projection");
 		glUniformMatrix4fv(projectionLoc, 1, GL_FALSE, glm::value_ptr(projection));
 
-		Planet::planet->Update(camera.Position.x, camera.Position.y, camera.Position.z);
+		outlineShader.use();
+		viewLoc = glGetUniformLocation(outlineShader.ID, "view");
+		glUniformMatrix4fv(viewLoc, 1, GL_FALSE, glm::value_ptr(view));
+		projectionLoc = glGetUniformLocation(outlineShader.ID, "projection");
+		glUniformMatrix4fv(projectionLoc, 1, GL_FALSE, glm::value_ptr(projection));
+
+		Planet::planet->Update(camera.Position);
+
+		// -- Render block outline -- //
+		if (uiEnabled)
+		{
+			// Get block position
+			auto result = Physics::Raycast(camera.Position, camera.Front, 5);
+			if (result.hit)
+			{
+				outlineShader.use();
+
+				// Set outline view to position
+				unsigned int modelLoc = glGetUniformLocation(outlineShader.ID, "model");
+				glUniform3f(modelLoc, result.blockX, result.blockY, result.blockZ);
+
+				// Render
+				glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+				//glEnable(GL_COLOR_LOGIC_OP);
+				glLogicOp(GL_INVERT);
+				glDisable(GL_CULL_FACE);
+				glBindVertexArray(outlineVAO);
+				glLineWidth(2.0);
+				glDrawArrays(GL_LINES, 0, 24);
+
+				glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+				glEnable(GL_CULL_FACE);
+				//glDisable(GL_COLOR_LOGIC_OP);
+			}
+		}
 
 		framebufferShader.use();
 
+		// -- Post Processing Stuff -- //
+
 		// Check if player is underwater
 		int blockX = camera.Position.x < 0 ? camera.Position.x - 1 : camera.Position.x;
 		int blockY = camera.Position.y < 0 ? camera.Position.y - 1 : camera.Position.y;
 		int blockZ = camera.Position.z < 0 ? camera.Position.z - 1 : camera.Position.z;
 
-		int chunkX = blockX < 0 ? floorf(blockX / (float)Planet::chunkSize) : blockX / (int)Planet::chunkSize;
-		int chunkY = blockY < 0 ? floorf(blockY / (float)Planet::chunkSize) : blockY / (int)Planet::chunkSize;
-		int chunkZ = blockZ < 0 ? floorf(blockZ / (float)Planet::chunkSize) : blockZ / (int)Planet::chunkSize;
+		int chunkX = blockX < 0 ? floorf(blockX / (float)CHUNK_SIZE) : blockX / (int)CHUNK_SIZE;
+		int chunkY = blockY < 0 ? floorf(blockY / (float)CHUNK_SIZE) : blockY / (int)CHUNK_SIZE;
+		int chunkZ = blockZ < 0 ? floorf(blockZ / (float)CHUNK_SIZE) : blockZ / (int)CHUNK_SIZE;
 
-		int localBlockX = blockX - (chunkX * Planet::chunkSize);
-		int localBlockY = blockY - (chunkY * Planet::chunkSize);
-		int localBlockZ = blockZ - (chunkZ * Planet::chunkSize);
+		int localBlockX = blockX - (chunkX * CHUNK_SIZE);
+		int localBlockY = blockY - (chunkY * CHUNK_SIZE);
+		int localBlockZ = blockZ - (chunkZ * CHUNK_SIZE);
 
-		Chunk* chunk = Planet::planet->GetChunk(chunkX, chunkY, chunkZ);
+		Chunk* chunk = Planet::planet->GetChunk(ChunkPos(chunkX, chunkY, chunkZ));
 		if (chunk != nullptr)
 		{
 			unsigned int blockType = chunk->GetBlockAtPos(
@@ -307,6 +468,7 @@ int main()
 			}
 		}
 
+		// Post Processing
 		glBindFramebuffer(GL_FRAMEBUFFER, 0);
 		glBindVertexArray(rectVAO);
 		glDisable(GL_DEPTH_TEST);
@@ -316,15 +478,50 @@ int main()
 		glBindTexture(GL_TEXTURE_2D, depthTexture);
 		glDrawArrays(GL_TRIANGLES, 0, 6);
 
+		if (uiEnabled)
+		{
+			// -- Render Crosshair -- //
+
+			// Render
+			glActiveTexture(GL_TEXTURE0);
+			glBindTexture(GL_TEXTURE_2D, crosshairTexture);
+
+			crosshairShader.use();
+			glDisable(GL_CULL_FACE);
+			glDisable(GL_DEPTH_TEST);
+			glEnable(GL_BLEND);
+			glEnable(GL_COLOR_LOGIC_OP);
+
+			unsigned int crosshairProjLoc = glGetUniformLocation(crosshairShader.ID, "projection");
+			glUniformMatrix4fv(crosshairProjLoc, 1, GL_FALSE, glm::value_ptr(ortho));
+			glBindVertexArray(crosshairVAO);
+			glDrawArrays(GL_TRIANGLES, 0, 6);
+
+			glEnable(GL_CULL_FACE);
+			glEnable(GL_DEPTH_TEST);
+			glDisable(GL_BLEND);
+			glDisable(GL_COLOR_LOGIC_OP);
+
 			// Draw ImGui UI
 			ImGui::Begin("Test");
-		ImGui::Text("FPS: %f (Avg: %f, Min: %f, Max: %f)", fps, avgFps, lowestFps, highestFps);
+			ImGui::Text("FPS: %d (Avg: %d, Min: %d, Max: %d)", (int)fps, (int)avgFps, (int)lowestFps, (int)highestFps);
 			ImGui::Text("MS: %f", deltaTime * 100.0f);
+			if (ImGui::Checkbox("VSYNC", &vsync))
+				glfwSwapInterval(vsync ? 1 : 0);
 			ImGui::Text("Chunks: %d (%d rendered)", Planet::planet->numChunks, Planet::planet->numChunksRendered);
+			ImGui::Text("Position: x: %f, y: %f, z: %f", camera.Position.x, camera.Position.y, camera.Position.z);
+			ImGui::Text("Direction: x: %f, y: %f, z: %f", camera.Front.x, camera.Front.y, camera.Front.z);
+			ImGui::Text("Selected Block: %s", Blocks::blocks[selectedBlock].blockName.c_str());
+			if (ImGui::SliderInt("Render Distance", &Planet::planet->renderDistance, 0, 30))
+				Planet::planet->ClearChunkQueue();
+			if (ImGui::SliderInt("Render Height", &Planet::planet->renderHeight, 0, 10))
+				Planet::planet->ClearChunkQueue();
+			ImGui::Checkbox("Use absolute Y axis for camera vertical movement", &camera.absoluteVerticalMovement);
 			ImGui::End();
 
 			ImGui::Render();
 			ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
+		}
 
 		// Check and call events and swap buffers
 		glfwSwapBuffers(window);
@@ -333,6 +530,8 @@ int main()
 		//std::cout << camera.Position.x << ", " << camera.Position.y << ", " << camera.Position.z << '\n';
 	}
 
+	delete Planet::planet;
+
 	ImGui_ImplOpenGL3_Shutdown();
 	ImGui_ImplGlfw_Shutdown();
 	ImGui::DestroyContext();
@@ -345,10 +544,18 @@ void framebufferSizeCallback(GLFWwindow* window, int width, int height)
 	windowX = width;
 	windowY = height;
 	glViewport(0, 0, width, height);
+
+	// resize framebuffer texture
+	glBindTexture(GL_TEXTURE_2D, framebufferTexture);
+	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, windowX, windowY, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
+	// resize framebuffer depth texture
+	glBindTexture(GL_TEXTURE_2D, depthTexture);
+	glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT, windowX, windowY, 0, GL_DEPTH_COMPONENT, GL_FLOAT, NULL);
 }
 
 void processInput(GLFWwindow* window)
 {
+	// Pause
 	if (glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS)
 	{
 		if (escapeDown)
@@ -363,6 +570,18 @@ void processInput(GLFWwindow* window)
 	else
 		escapeDown = false;
 
+	// UI Toggle
+	if (glfwGetKey(window, GLFW_KEY_F1) == GLFW_PRESS)
+	{
+		if (f1Down)
+			return;
+
+		f1Down = true;
+		uiEnabled = !uiEnabled;
+	}
+	else
+		f1Down = false;
+
 	if (glfwGetKey(window, GLFW_KEY_W) == GLFW_PRESS)
 	{
 		if (glfwGetKey(window, GLFW_KEY_SPACE) == GLFW_PRESS)
@@ -382,6 +601,61 @@ void processInput(GLFWwindow* window)
 		camera.ProcessKeyboard(DOWN, deltaTime);
 }
 
+void mouse_button_callback(GLFWwindow* window, int button, int action, int mods)
+{
+	if (button == GLFW_MOUSE_BUTTON_LEFT && action == GLFW_PRESS)
+	{
+		auto result = Physics::Raycast(camera.Position, camera.Front, 5);
+		if (!result.hit)
+			return;
+
+		result.chunk->UpdateBlock(result.localBlockX, result.localBlockY, result.localBlockZ, 0);
+	}
+	else if (button == GLFW_MOUSE_BUTTON_MIDDLE && action == GLFW_PRESS)
+	{
+		auto result = Physics::Raycast(camera.Position, camera.Front, 5);
+		if (!result.hit)
+			return;
+
+		selectedBlock = result.chunk->GetBlockAtPos(result.localBlockX, result.localBlockY, result.localBlockZ);
+	}
+	else if (button == GLFW_MOUSE_BUTTON_RIGHT && action == GLFW_PRESS)
+	{
+		auto result = Physics::Raycast(camera.Position, camera.Front, 5);
+		if (!result.hit)
+			return;
+
+		float distX = result.hitPos.x - (result.blockX + .5f);
+		float distY = result.hitPos.y - (result.blockY + .5f);
+		float distZ = result.hitPos.z - (result.blockZ + .5f);
+
+		int blockX = result.blockX;
+		int blockY = result.blockY;
+		int blockZ = result.blockZ;
+		
+		// Choose face to place on
+		if (abs(distX) > abs(distY) && abs(distX) > abs(distZ))
+			blockX += (distX > 0 ? 1 : -1);
+		else if (abs(distY) > abs(distX) && abs(distY) > abs(distZ))
+			blockY += (distY > 0 ? 1 : -1);
+		else
+			blockZ += (distZ > 0 ? 1 : -1);
+
+		int chunkX = blockX < 0 ? floorf(blockX / (float)CHUNK_SIZE) : blockX / (int)CHUNK_SIZE;
+		int chunkY = blockY < 0 ? floorf(blockY / (float)CHUNK_SIZE) : blockY / (int)CHUNK_SIZE;
+		int chunkZ = blockZ < 0 ? floorf(blockZ / (float)CHUNK_SIZE) : blockZ / (int)CHUNK_SIZE;
+
+		int localBlockX = blockX - (chunkX * CHUNK_SIZE);
+		int localBlockY = blockY - (chunkY * CHUNK_SIZE);
+		int localBlockZ = blockZ - (chunkZ * CHUNK_SIZE);
+
+		Chunk* chunk = Planet::planet->GetChunk(ChunkPos(chunkX, chunkY, chunkZ));
+		uint16_t blockToReplace = chunk->GetBlockAtPos(localBlockX, localBlockY, localBlockZ);
+		if (chunk != nullptr && (blockToReplace == 0 || Blocks::blocks[blockToReplace].blockType == Block::LIQUID))
+			chunk->UpdateBlock(localBlockX, localBlockY, localBlockZ, selectedBlock);
+	}
+}
+
 void mouse_callback(GLFWwindow* window, double xpos, double ypos)
 {
 	if (menuMode)

ScuffedMinecraft/src/Block.cpp

@@ -1,7 +1,7 @@
 #include "Block.h"
 
-Block::Block(char minX, char minY, char maxX, char maxY, BLOCK_TYPE blockType)
-	: blockType(blockType)
+Block::Block(char minX, char minY, char maxX, char maxY, BLOCK_TYPE blockType, std::string blockName)
+	: blockType(blockType), blockName(blockName)
 {
 	topMinX = minX;
 	topMinY = minY;
@@ -21,8 +21,8 @@ Block::Block(char minX, char minY, char maxX, char maxY, BLOCK_TYPE blockType)
 
 Block::Block(char topMinX, char topMinY, char topMaxX, char topMaxY,
 	char bottomMinX, char bottomMinY, char bottomMaxX, char bottomMaxY,
-	char sideMinX, char sideMinY, char sideMaxX, char sideMaxY, BLOCK_TYPE blockType)
-	: blockType(blockType)
+	char sideMinX, char sideMinY, char sideMaxX, char sideMaxY, BLOCK_TYPE blockType, std::string blockName)
+	: blockType(blockType), blockName(blockName)
 {
 	this->topMinX = topMinX;
 	this->topMinY = topMinY;

ScuffedMinecraft/src/Block.h

@@ -1,5 +1,7 @@
 #pragma once
 
+#include <string>
+
 struct Block
 {
 public:
@@ -16,10 +18,11 @@ public:
 	char bottomMinX, bottomMinY, bottomMaxX, bottomMaxY;
 	char sideMinX, sideMinY, sideMaxX, sideMaxY;
 	BLOCK_TYPE blockType;
+	std::string blockName;
 
-	Block(char minX, char minY, char maxX, char maxY, BLOCK_TYPE blockType);
+	Block(char minX, char minY, char maxX, char maxY, BLOCK_TYPE blockType, std::string blockName);
 	Block(char topMinX, char topMinY, char topMaxX, char topMaxY, 
 		char bottomMinX, char bottomMinY, char bottomMaxX, char bottomMaxY,
-		char sideMinX, char sideMinY, char sideMaxX, char sideMaxY, BLOCK_TYPE blockType);
+		char sideMinX, char sideMinY, char sideMaxX, char sideMaxY, BLOCK_TYPE blockType, std::string blockName);
 
 };

ScuffedMinecraft/src/Blocks.h

@@ -1,34 +1,36 @@
 #pragma once
 
 #include <vector>
+#include <array>
 
 #include "Block.h"
 
 namespace Blocks
 {
 	const std::vector<Block> blocks{
-		Block(0, 0, 0, 0, Block::TRANSPARENT),		// Air block
-		Block(0, 0, 1, 1, Block::SOLID),		// Dirt block
+		Block(0, 0, 0, 0, Block::TRANSPARENT, "Air"),				// Air block
+		Block(0, 0, 1, 1, Block::SOLID, "Dirt"),					// Dirt block
 
 		Block(1, 1, 2, 2,											// Grass block
 			  0, 0, 1, 1,
-			  1, 0, 2, 1, Block::SOLID),
+			  1, 0, 2, 1, Block::SOLID, "Grass Block"),
 
-		Block(0, 1, 1, 2, Block::SOLID),		// Stone block
+		Block(0, 1, 1, 2, Block::SOLID, "Stone"),					// Stone block
 
 		Block(2, 1, 3, 2,											// Log
 			  2, 1, 3, 2,
-			  2, 0, 3, 1, Block::SOLID),
+			  2, 0, 3, 1, Block::SOLID, "Log"),
 
-		Block(0, 2, 1, 3, Block::LEAVES),		// Leaves
-		Block(1, 2, 2, 3, Block::BILLBOARD),	// Grass
-		Block(3, 0, 4, 1, Block::BILLBOARD),	// Tall Grass Bottom
-		Block(3, 1, 4, 2, Block::BILLBOARD),	// Tall Grass Top
-		Block(0, 3, 1, 4, Block::BILLBOARD),	// Poppy
-		Block(2, 2, 3, 3, Block::BILLBOARD),	// White Tulip
-		Block(3, 2, 4, 3, Block::BILLBOARD),	// Pink Tulip
-		Block(1, 3, 2, 4, Block::BILLBOARD),	// Orange Tulip
-		Block(0, 4, 1, 5, Block::LIQUID)		// Water
+		Block(0, 2, 1, 3, Block::LEAVES, "Leaves"),					// Leaves
+		Block(1, 2, 2, 3, Block::BILLBOARD, "Grass"),				// Grass
+		Block(3, 0, 4, 1, Block::BILLBOARD, "Tall Grass Bottom"),	// Tall Grass Bottom
+		Block(3, 1, 4, 2, Block::BILLBOARD, "Tall Grass Top"),		// Tall Grass Top
+		Block(0, 3, 1, 4, Block::BILLBOARD, "Poppy"),				// Poppy
+		Block(2, 2, 3, 3, Block::BILLBOARD, "White Tulip"),			// White Tulip
+		Block(3, 2, 4, 3, Block::BILLBOARD, "Pink Tulip"),			// Pink Tulip
+		Block(1, 3, 2, 4, Block::BILLBOARD, "Orange Tulip"),		// Orange Tulip
+		Block(0, 4, 1, 5, Block::LIQUID, "Water"),					// Water
+		Block(4, 0, 5, 1, Block::SOLID, "Sand"),					// Sand
 	};
 
 	enum BLOCKS
@@ -46,6 +48,7 @@ namespace Blocks
 		WHITE_TULIP = 10,
 		PINK_TULIP = 11,
 		ORANGE_TULIP = 12,
-		WATER = 13
+		WATER = 13,
+		SAND = 14,
 	};
 }

ScuffedMinecraft/src/CMakeLists.txt

@@ -1,9 +1,15 @@
 add_executable(scuffed_mc
   Application.cpp Chunk.cpp Shader.cpp 
   Block.cpp NoiseSettings.cpp SurfaceFeature.cpp 
+  ChunkData.cpp ChunkPos.cpp Physics.cpp
   Camera.cpp Planet.cpp WorldGen.cpp ../vendor/glad.c
 )
 
-include_directories(../../Dependencies/include/)
+if(LINUX)
+  add_compile_definitions(LINUX)
+endif()
 
-target_link_libraries(scuffed_mc imgui glfw)
+# make sure the program runs in the right place from visual studio
+set_target_properties(scuffed_mc PROPERTIES VS_DEBUGGER_WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}/bin")
+
+target_link_libraries(scuffed_mc imgui $<IF:$<PLATFORM_ID:Windows>,glfw3,glfw>)

ScuffedMinecraft/src/Camera.cpp

@@ -38,9 +38,9 @@ void Camera::ProcessKeyboard(Camera_Movement direction, float deltaTime)
     if (direction == RIGHT)
         Position += Right * velocity;
     if (direction == UP)
-        Position += Up * velocity;
+        Position += (absoluteVerticalMovement ? glm::vec3(0, 1, 0) : Up) * velocity;
     if (direction == DOWN)
-        Position -= Up * velocity;
+        Position -= (absoluteVerticalMovement ? glm::vec3(0, 1, 0) : Up) * velocity;
     if (direction == FORWARD_NO_Y)
     {
         glm::vec3 moveDir = Front;

ScuffedMinecraft/src/Camera.h

@@ -36,6 +36,7 @@ public:
 	float MovementSpeed;
 	float MouseSensitivity;
 	float Zoom;
+	bool absoluteVerticalMovement = true;
 
 	Camera(glm::vec3 position = glm::vec3(0.0f, 0.0f, 0.0f), glm::vec3 up = glm::vec3(0.0f, 1.0f, 0.0f), float yaw = YAW, float pitch = PITCH);
 

ScuffedMinecraft/src/Chunk.cpp

@@ -10,14 +10,13 @@
 #include "Blocks.h"
 #include "WorldGen.h"
 
-Chunk::Chunk(unsigned int chunkSize, glm::vec3 chunkPos, Shader* shader, Shader* waterShader)
-	: chunkSize(chunkSize), chunkPos(chunkPos)
+Chunk::Chunk(ChunkPos chunkPos, Shader* shader, Shader* waterShader)
+	: chunkPos(chunkPos)
 {
-	worldPos = glm::vec3(chunkPos.x * chunkSize, chunkPos.y * chunkSize, chunkPos.z * chunkSize);
+	worldPos = glm::vec3(chunkPos.x * (float)CHUNK_SIZE, chunkPos.y * (float)CHUNK_SIZE, chunkPos.z * (float)CHUNK_SIZE);
 
 	ready = false;
 	generated = false;
-	chunkThread = std::thread(&Chunk::GenerateChunk, this);
 }
 
 Chunk::~Chunk()
@@ -38,47 +37,41 @@ Chunk::~Chunk()
 	glDeleteVertexArrays(1, &billboardVAO);
 }
 
-void Chunk::GenerateChunk()
+void Chunk::GenerateChunkMesh()
 {
-	//std::cout << "Started thread: " << std::this_thread::get_id() << '\n';
-
-	WorldGen::GenerateChunkData(chunkPos.x, chunkPos.y, chunkPos.z, chunkSize, &chunkData);
-	std::vector<unsigned int> northData, southData, eastData, westData, upData, downData;
-
-	WorldGen::GenerateChunkData(chunkPos.x,     chunkPos.y,     chunkPos.z - 1, chunkSize, &northData);
-	WorldGen::GenerateChunkData(chunkPos.x,     chunkPos.y,     chunkPos.z + 1, chunkSize, &southData);
-	WorldGen::GenerateChunkData(chunkPos.x + 1, chunkPos.y,     chunkPos.z, chunkSize, &eastData);
-	WorldGen::GenerateChunkData(chunkPos.x - 1, chunkPos.y,     chunkPos.z, chunkSize, &westData);
-	WorldGen::GenerateChunkData(chunkPos.x,     chunkPos.y + 1, chunkPos.z, chunkSize, &upData);
-	WorldGen::GenerateChunkData(chunkPos.x,     chunkPos.y - 1, chunkPos.z, chunkSize, &downData);
-
-	//std::cout << "Got chunk data in thread: " << std::this_thread::get_id() << '\n';
+	mainVertices.clear();
+	mainIndices.clear();
+	waterVertices.clear();
+	waterIndices.clear();
+	billboardVertices.clear();
+	billboardIndices.clear();
+	numTrianglesMain = 0;
+	numTrianglesWater = 0;
+	numTrianglesBillboard = 0;
 
 	unsigned int currentVertex = 0;
 	unsigned int currentLiquidVertex = 0;
 	unsigned int currentBillboardVertex = 0;
-	for (char x = 0; x < chunkSize; x++)
+	for (char x = 0; x < CHUNK_SIZE; x++)
 	{
-		for (char z = 0; z < chunkSize; z++)
+		for (char z = 0; z < CHUNK_SIZE; z++)
 		{
-			for (char y = 0; y < chunkSize; y++)
+			for (char y = 0; y < CHUNK_SIZE; y++)
 			{
-				int index = x * chunkSize * chunkSize + z * chunkSize + y;
-				if (chunkData[index] == 0)
+				if (chunkData->GetBlock(x, y, z) == 0)
 					continue;
 
-				const Block* block = &Blocks::blocks[chunkData[index]];
+				const Block* block = &Blocks::blocks[chunkData->GetBlock(x, y, z)];
 
 				int topBlock;
-				if (y < chunkSize - 1)
+				if (y < CHUNK_SIZE - 1)
 				{
-					int blockIndex = x * chunkSize * chunkSize + z * chunkSize + (y + 1);
-					topBlock = chunkData[blockIndex];
+					topBlock = chunkData->GetBlock(x, y + 1, z);
 				}
 				else
 				{
-					int blockIndex = x * chunkSize * chunkSize + z * chunkSize + 0;
-					topBlock = upData[blockIndex];
+					int blockIndex = x * CHUNK_SIZE * CHUNK_SIZE + z * CHUNK_SIZE + 0;
+					topBlock = upData->GetBlock(x, 0, z);
 				}
 
 				const Block* topBlockType = &Blocks::blocks[topBlock];
@@ -119,13 +112,11 @@ void Chunk::GenerateChunk()
 						int northBlock;
 						if (z > 0)
 						{
-							int northIndex = x * chunkSize * chunkSize + (z - 1) * chunkSize + y;
-							northBlock = chunkData[northIndex];
+							northBlock = chunkData->GetBlock(x, y, z - 1);
 						}
 						else
 						{
-							int northIndex = x * chunkSize * chunkSize + (chunkSize - 1) * chunkSize + y;
-							northBlock = northData[northIndex];
+							northBlock = northData->GetBlock(x, y, CHUNK_SIZE - 1);
 						}
 
 						const Block* northBlockType = &Blocks::blocks[northBlock];
@@ -157,12 +148,12 @@ void Chunk::GenerateChunk()
 								mainVertices.push_back(Vertex(x + 1, y + 1, z + 0, block->sideMinX, block->sideMaxY, 0));
 								mainVertices.push_back(Vertex(x + 0, y + 1, z + 0, block->sideMaxX, block->sideMaxY, 0));
 
-								mianIndices.push_back(currentVertex + 0);
-								mianIndices.push_back(currentVertex + 3);
-								mianIndices.push_back(currentVertex + 1);
-								mianIndices.push_back(currentVertex + 0);
-								mianIndices.push_back(currentVertex + 2);
-								mianIndices.push_back(currentVertex + 3);
+								mainIndices.push_back(currentVertex + 0);
+								mainIndices.push_back(currentVertex + 3);
+								mainIndices.push_back(currentVertex + 1);
+								mainIndices.push_back(currentVertex + 0);
+								mainIndices.push_back(currentVertex + 2);
+								mainIndices.push_back(currentVertex + 3);
 								currentVertex += 4;
 							}
 						}
@@ -171,15 +162,13 @@ void Chunk::GenerateChunk()
 					// South
 					{
 						int southBlock;
-						if (z < chunkSize - 1)
+						if (z < CHUNK_SIZE - 1)
 						{
-							int southIndex = x * chunkSize * chunkSize + (z + 1) * chunkSize + y;
-							southBlock = chunkData[southIndex];
+							southBlock = chunkData->GetBlock(x, y, z + 1);
 						}
 						else
 						{
-							int southIndex = x * chunkSize * chunkSize + 0 * chunkSize + y;
-							southBlock = southData[southIndex];
+							southBlock = southData->GetBlock(x, y, 0);
 						}
 
 						const Block* southBlockType = &Blocks::blocks[southBlock];
@@ -211,12 +200,12 @@ void Chunk::GenerateChunk()
 								mainVertices.push_back(Vertex(x + 0, y + 1, z + 1, block->sideMinX, block->sideMaxY, 1));
 								mainVertices.push_back(Vertex(x + 1, y + 1, z + 1, block->sideMaxX, block->sideMaxY, 1));
 
-								mianIndices.push_back(currentVertex + 0);
-								mianIndices.push_back(currentVertex + 3);
-								mianIndices.push_back(currentVertex + 1);
-								mianIndices.push_back(currentVertex + 0);
-								mianIndices.push_back(currentVertex + 2);
-								mianIndices.push_back(currentVertex + 3);
+								mainIndices.push_back(currentVertex + 0);
+								mainIndices.push_back(currentVertex + 3);
+								mainIndices.push_back(currentVertex + 1);
+								mainIndices.push_back(currentVertex + 0);
+								mainIndices.push_back(currentVertex + 2);
+								mainIndices.push_back(currentVertex + 3);
 								currentVertex += 4;
 							}
 						}
@@ -227,13 +216,11 @@ void Chunk::GenerateChunk()
 						int westBlock;
 						if (x > 0)
 						{
-							int blockIndex = (x - 1) * chunkSize * chunkSize + z * chunkSize + y;
-							westBlock = chunkData[blockIndex];
+							westBlock = chunkData->GetBlock(x - 1, y, z);
 						}
 						else
 						{
-							int blockIndex = (chunkSize - 1) * chunkSize * chunkSize + z * chunkSize + y;
-							westBlock = westData[blockIndex];
+							westBlock = westData->GetBlock(CHUNK_SIZE - 1, y, z);
 						}
 
 						const Block* westBlockType = &Blocks::blocks[westBlock];
@@ -265,12 +252,12 @@ void Chunk::GenerateChunk()
 								mainVertices.push_back(Vertex(x + 0, y + 1, z + 0, block->sideMinX, block->sideMaxY, 2));
 								mainVertices.push_back(Vertex(x + 0, y + 1, z + 1, block->sideMaxX, block->sideMaxY, 2));
 
-								mianIndices.push_back(currentVertex + 0);
-								mianIndices.push_back(currentVertex + 3);
-								mianIndices.push_back(currentVertex + 1);
-								mianIndices.push_back(currentVertex + 0);
-								mianIndices.push_back(currentVertex + 2);
-								mianIndices.push_back(currentVertex + 3);
+								mainIndices.push_back(currentVertex + 0);
+								mainIndices.push_back(currentVertex + 3);
+								mainIndices.push_back(currentVertex + 1);
+								mainIndices.push_back(currentVertex + 0);
+								mainIndices.push_back(currentVertex + 2);
+								mainIndices.push_back(currentVertex + 3);
 								currentVertex += 4;
 							}
 						}
@@ -279,15 +266,13 @@ void Chunk::GenerateChunk()
 					// East
 					{
 						int eastBlock;
-						if (x < chunkSize - 1)
+						if (x < CHUNK_SIZE - 1)
 						{
-							int blockIndex = (x + 1) * chunkSize * chunkSize + z * chunkSize + y;
-							eastBlock = chunkData[blockIndex];
+							eastBlock = chunkData->GetBlock(x + 1, y, z);
 						}
 						else
 						{
-							int blockIndex = 0 * chunkSize * chunkSize + z * chunkSize + y;
-							eastBlock = eastData[blockIndex];
+							eastBlock = eastData->GetBlock(0, y, z);
 						}
 
 						const Block* eastBlockType = &Blocks::blocks[eastBlock];
@@ -319,12 +304,12 @@ void Chunk::GenerateChunk()
 								mainVertices.push_back(Vertex(x + 1, y + 1, z + 1, block->sideMinX, block->sideMaxY, 3));
 								mainVertices.push_back(Vertex(x + 1, y + 1, z + 0, block->sideMaxX, block->sideMaxY, 3));
 
-								mianIndices.push_back(currentVertex + 0);
-								mianIndices.push_back(currentVertex + 3);
-								mianIndices.push_back(currentVertex + 1);
-								mianIndices.push_back(currentVertex + 0);
-								mianIndices.push_back(currentVertex + 2);
-								mianIndices.push_back(currentVertex + 3);
+								mainIndices.push_back(currentVertex + 0);
+								mainIndices.push_back(currentVertex + 3);
+								mainIndices.push_back(currentVertex + 1);
+								mainIndices.push_back(currentVertex + 0);
+								mainIndices.push_back(currentVertex + 2);
+								mainIndices.push_back(currentVertex + 3);
 								currentVertex += 4;
 							}
 						}
@@ -335,13 +320,12 @@ void Chunk::GenerateChunk()
 						int bottomBlock;
 						if (y > 0)
 						{
-							int blockIndex = x * chunkSize * chunkSize + z * chunkSize + (y - 1);
-							bottomBlock = chunkData[blockIndex];
+							bottomBlock = chunkData->GetBlock(x, y - 1, z);
 						}
 						else
 						{
-							int blockIndex = x * chunkSize * chunkSize + z * chunkSize + (chunkSize - 1);
-							bottomBlock = downData[blockIndex];
+							//int blockIndex = x * chunkSize * chunkSize + z * chunkSize + (chunkSize - 1);
+							bottomBlock = downData->GetBlock(x, CHUNK_SIZE - 1, z);
 						}
 
 						const Block* bottomBlockType = &Blocks::blocks[bottomBlock];
@@ -373,12 +357,12 @@ void Chunk::GenerateChunk()
 								mainVertices.push_back(Vertex(x + 1, y + 0, z + 0, block->bottomMinX, block->bottomMaxY, 4));
 								mainVertices.push_back(Vertex(x + 0, y + 0, z + 0, block->bottomMaxX, block->bottomMaxY, 4));
 
-								mianIndices.push_back(currentVertex + 0);
-								mianIndices.push_back(currentVertex + 3);
-								mianIndices.push_back(currentVertex + 1);
-								mianIndices.push_back(currentVertex + 0);
-								mianIndices.push_back(currentVertex + 2);
-								mianIndices.push_back(currentVertex + 3);
+								mainIndices.push_back(currentVertex + 0);
+								mainIndices.push_back(currentVertex + 3);
+								mainIndices.push_back(currentVertex + 1);
+								mainIndices.push_back(currentVertex + 0);
+								mainIndices.push_back(currentVertex + 2);
+								mainIndices.push_back(currentVertex + 3);
 								currentVertex += 4;
 							}
 						}
@@ -427,12 +411,12 @@ void Chunk::GenerateChunk()
 							mainVertices.push_back(Vertex(x + 0, y + 1, z + 0, block->topMinX, block->topMaxY, 5));
 							mainVertices.push_back(Vertex(x + 1, y + 1, z + 0, block->topMaxX, block->topMaxY, 5));
 
-							mianIndices.push_back(currentVertex + 0);
-							mianIndices.push_back(currentVertex + 3);
-							mianIndices.push_back(currentVertex + 1);
-							mianIndices.push_back(currentVertex + 0);
-							mianIndices.push_back(currentVertex + 2);
-							mianIndices.push_back(currentVertex + 3);
+							mainIndices.push_back(currentVertex + 0);
+							mainIndices.push_back(currentVertex + 3);
+							mainIndices.push_back(currentVertex + 1);
+							mainIndices.push_back(currentVertex + 0);
+							mainIndices.push_back(currentVertex + 2);
+							mainIndices.push_back(currentVertex + 3);
 							currentVertex += 4;
 						}
 					}
@@ -455,7 +439,7 @@ void Chunk::Render(Shader* mainShader, Shader* billboardShader)
 		if (generated)
 		{
 			// Solid
-			numTrianglesMain = mianIndices.size();
+			numTrianglesMain = mainIndices.size();
 
 			glGenVertexArrays(1, &mainVAO);
 			glGenBuffers(1, &mainVBO);
@@ -467,7 +451,7 @@ void Chunk::Render(Shader* mainShader, Shader* billboardShader)
 			glBufferData(GL_ARRAY_BUFFER, mainVertices.size() * sizeof(Vertex), mainVertices.data(), GL_STATIC_DRAW);
 
 			glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mainEBO);
-			glBufferData(GL_ELEMENT_ARRAY_BUFFER, mianIndices.size() * sizeof(unsigned int), mianIndices.data(), GL_STATIC_DRAW);
+			glBufferData(GL_ELEMENT_ARRAY_BUFFER, mainIndices.size() * sizeof(unsigned int), mainIndices.data(), GL_STATIC_DRAW);
 
 			glVertexAttribPointer(0, 3, GL_BYTE, GL_FALSE, sizeof(Vertex), (void*)offsetof(Vertex, posX));
 			glEnableVertexAttribArray(0);
@@ -572,11 +556,128 @@ void Chunk::RenderWater(Shader* shader)
 	glDrawElements(GL_TRIANGLES, numTrianglesWater, GL_UNSIGNED_INT, 0);
 }
 
-unsigned int Chunk::GetBlockAtPos(int x, int y, int z)
+uint16_t Chunk::GetBlockAtPos(int x, int y, int z)
 {
 	if (!ready)
 		return 0;
 
-	int index = x * chunkSize * chunkSize + z * chunkSize + y;
-	return chunkData[index];
+	return chunkData->GetBlock(x, y, z);
+}
+
+void Chunk::UpdateBlock(int x, int y, int z, uint16_t newBlock)
+{
+	chunkData->SetBlock(x, y, z, newBlock);
+
+	GenerateChunkMesh();
+
+	// Main
+	numTrianglesMain = mainIndices.size();
+
+	glBindVertexArray(mainVAO);
+
+	glBindBuffer(GL_ARRAY_BUFFER, mainVBO);
+	glBufferData(GL_ARRAY_BUFFER, mainVertices.size() * sizeof(Vertex), mainVertices.data(), GL_STATIC_DRAW);
+
+	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mainEBO);
+	glBufferData(GL_ELEMENT_ARRAY_BUFFER, mainIndices.size() * sizeof(unsigned int), mainIndices.data(), GL_STATIC_DRAW);
+
+	// Water
+	numTrianglesWater = waterIndices.size();
+
+	glBindVertexArray(waterVAO);
+
+	glBindBuffer(GL_ARRAY_BUFFER, waterVBO);
+	glBufferData(GL_ARRAY_BUFFER, waterVertices.size() * sizeof(WaterVertex), waterVertices.data(), GL_STATIC_DRAW);
+
+	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, waterEBO);
+	glBufferData(GL_ELEMENT_ARRAY_BUFFER, waterIndices.size() * sizeof(unsigned int), waterIndices.data(), GL_STATIC_DRAW);
+
+	// Billboard
+	numTrianglesBillboard = billboardIndices.size();;
+
+	glBindVertexArray(billboardVAO);
+
+	glBindBuffer(GL_ARRAY_BUFFER, billboardVBO);
+	glBufferData(GL_ARRAY_BUFFER, billboardVertices.size() * sizeof(BillboardVertex), billboardVertices.data(), GL_STATIC_DRAW);
+
+	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, billboardEBO);
+	glBufferData(GL_ELEMENT_ARRAY_BUFFER, billboardIndices.size() * sizeof(unsigned int), billboardIndices.data(), GL_STATIC_DRAW);
+
+
+	if (x == 0)
+	{
+		Chunk* westChunk = Planet::planet->GetChunk({ chunkPos.x - 1, chunkPos.y, chunkPos.z });
+		if (westChunk != nullptr)
+			westChunk->UpdateChunk();
+	}
+	else if (x == CHUNK_SIZE - 1)
+	{
+		Chunk* eastChunk = Planet::planet->GetChunk({ chunkPos.x + 1, chunkPos.y, chunkPos.z });
+		if (eastChunk != nullptr)
+			eastChunk->UpdateChunk();
+	}
+
+	if (y == 0)
+	{
+		Chunk* downChunk = Planet::planet->GetChunk({ chunkPos.x, chunkPos.y - 1, chunkPos.z });
+		if (downChunk != nullptr)
+			downChunk->UpdateChunk();
+	}
+	else if (y == CHUNK_SIZE - 1)
+	{
+		Chunk* upChunk = Planet::planet->GetChunk({ chunkPos.x, chunkPos.y + 1, chunkPos.z });
+		if (upChunk != nullptr)
+			upChunk->UpdateChunk();
+	}
+
+	if (z == 0)
+	{
+		Chunk* northChunk = Planet::planet->GetChunk({ chunkPos.x, chunkPos.y, chunkPos.z - 1 });
+		if (northChunk != nullptr)
+			northChunk->UpdateChunk();
+	}
+	else if (z == CHUNK_SIZE - 1)
+	{
+		Chunk* southChunk = Planet::planet->GetChunk({ chunkPos.x, chunkPos.y, chunkPos.z + 1 });
+		if (southChunk != nullptr)
+			southChunk->UpdateChunk();
+	}
+}
+
+void Chunk::UpdateChunk()
+{
+	GenerateChunkMesh();
+
+	// Main
+	numTrianglesMain = mainIndices.size();
+
+	glBindVertexArray(mainVAO);
+
+	glBindBuffer(GL_ARRAY_BUFFER, mainVBO);
+	glBufferData(GL_ARRAY_BUFFER, mainVertices.size() * sizeof(Vertex), mainVertices.data(), GL_STATIC_DRAW);
+
+	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mainEBO);
+	glBufferData(GL_ELEMENT_ARRAY_BUFFER, mainIndices.size() * sizeof(unsigned int), mainIndices.data(), GL_STATIC_DRAW);
+
+	// Water
+	numTrianglesWater = waterIndices.size();
+
+	glBindVertexArray(waterVAO);
+
+	glBindBuffer(GL_ARRAY_BUFFER, waterVBO);
+	glBufferData(GL_ARRAY_BUFFER, waterVertices.size() * sizeof(WaterVertex), waterVertices.data(), GL_STATIC_DRAW);
+
+	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, waterEBO);
+	glBufferData(GL_ELEMENT_ARRAY_BUFFER, waterIndices.size() * sizeof(unsigned int), waterIndices.data(), GL_STATIC_DRAW);
+
+	// Billboard
+	numTrianglesBillboard = billboardIndices.size();
+
+	glBindVertexArray(billboardVAO);
+
+	glBindBuffer(GL_ARRAY_BUFFER, billboardVBO);
+	glBufferData(GL_ARRAY_BUFFER, billboardVertices.size() * sizeof(BillboardVertex), billboardVertices.data(), GL_STATIC_DRAW);
+
+	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, billboardEBO);
+	glBufferData(GL_ELEMENT_ARRAY_BUFFER, billboardIndices.size() * sizeof(unsigned int), billboardIndices.data(), GL_STATIC_DRAW);
 }

ScuffedMinecraft/src/Chunk.h

@@ -6,31 +6,40 @@
 
 #include "Shader.h"
 #include "Vertex.h"
+#include "ChunkPos.h"
+#include "ChunkData.h"
 
 class Chunk
 {
 public:
-	Chunk(unsigned int chunkSize, glm::vec3 chunkPos, Shader* shader, Shader* waterShader);
+	Chunk(ChunkPos chunkPos, Shader* shader, Shader* waterShader);
 	~Chunk();
 
-	void GenerateChunk();
+	void GenerateChunkMesh();
 	void Render(Shader* mainShader, Shader* billboardShader);
 	void RenderWater(Shader* shader);
-	unsigned int GetBlockAtPos(int x, int y, int z);
+	uint16_t GetBlockAtPos(int x, int y, int z);
+	void UpdateBlock(int x, int y, int z, uint16_t newBlock);
+	void UpdateChunk();
 
 public:
-	std::vector<unsigned int> chunkData;
-	glm::vec3 chunkPos;
+	ChunkData* chunkData;
+	ChunkData* northData;
+	ChunkData* southData;
+	ChunkData* upData;
+	ChunkData* downData;
+	ChunkData* eastData;
+	ChunkData* westData;
+	ChunkPos chunkPos;
 	bool ready;
 	bool generated;
 
 private:
-	unsigned int chunkSize;
 	glm::vec3 worldPos;
 	std::thread chunkThread;
 
 	std::vector<Vertex> mainVertices;
-	std::vector<unsigned int> mianIndices;
+	std::vector<unsigned int> mainIndices;
 	std::vector<WaterVertex> waterVertices;
 	std::vector<unsigned int> waterIndices;
 	std::vector<BillboardVertex> billboardVertices;

ScuffedMinecraft/src/ChunkData.cpp

@@ -0,0 +1,39 @@
+#include "ChunkData.h"
+
+#include "Planet.h"
+
+ChunkData::ChunkData(uint16_t* data)
+	: data(data)
+{
+	
+}
+
+ChunkData::~ChunkData()
+{
+	delete[] data;
+}
+
+inline int ChunkData::GetIndex(int x, int y, int z) const
+{
+	return x * CHUNK_SIZE * CHUNK_SIZE + z * CHUNK_SIZE + y;
+}
+
+inline int ChunkData::GetIndex(ChunkPos localBlockPos) const
+{
+	return localBlockPos.x * CHUNK_SIZE * CHUNK_SIZE + localBlockPos.z * CHUNK_SIZE + localBlockPos.y;
+}
+
+uint16_t ChunkData::GetBlock(ChunkPos blockPos)
+{
+	return data[GetIndex(blockPos)];
+}
+
+uint16_t ChunkData::GetBlock(int x, int y, int z)
+{
+	return data[GetIndex(x, y, z)];
+}
+
+void ChunkData::SetBlock(int x, int y, int z, uint16_t block)
+{
+	data[GetIndex(x, y, z)] = block;
+}

ScuffedMinecraft/src/ChunkData.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <cstdint>
+
+#include "ChunkPos.h"
+
+struct ChunkData
+{
+	uint16_t* data;
+
+	ChunkData(uint16_t* data);
+	~ChunkData();
+
+	inline int GetIndex(int x, int y, int z) const;
+	inline int GetIndex(ChunkPos localBlockPos) const;
+
+	uint16_t GetBlock(ChunkPos blockPos);
+	uint16_t GetBlock(int x, int y, int z);
+	void SetBlock(int x, int y, int z, uint16_t block);
+};

ScuffedMinecraft/src/ChunkPos.cpp

@@ -0,0 +1,18 @@
+#include "ChunkPos.h"
+
+ChunkPos::ChunkPos()
+	: x(0), y(0), z(0)
+{
+
+}
+
+ChunkPos::ChunkPos(int x, int y, int z)
+	: x(x), y(y), z(z)
+{
+
+}
+
+bool ChunkPos::operator==(const ChunkPos& other) const
+{
+	return other.x == x && other.y == y && other.z == z;
+}

ScuffedMinecraft/src/ChunkPos.h

@@ -0,0 +1,13 @@
+#pragma once
+
+struct ChunkPos
+{
+	int x;
+	int y;
+	int z;
+
+	ChunkPos();
+	ChunkPos(int x, int y, int z);
+
+	bool operator==(const ChunkPos& other) const;
+};

ScuffedMinecraft/src/ChunkPosHash.h

@@ -0,0 +1,15 @@
+#include "ChunkPos.h"
+#include <unordered_map>
+
+struct ChunkPosHash
+{
+	std::size_t operator()(const ChunkPos& key) const
+	{
+		std::size_t hx = std::hash<int>()(key.x);
+		std::size_t hy = std::hash<int>()(key.y);
+		std::size_t hz = std::hash<int>()(key.z);
+
+		// Combine the hashes using bitwise XOR and shifting
+		return hx ^ (hy << 1) ^ (hz << 2);
+	}
+};

ScuffedMinecraft/src/Physics.cpp

@@ -0,0 +1,47 @@
+#include "Physics.h"
+#include <iostream>
+#include "Blocks.h"
+
+Physics::RaycastResult Physics::Raycast(const glm::vec3 startPos, const glm::vec3 direction, const float maxDistance)
+{
+	float currentDistance = 0;
+
+	while (currentDistance < maxDistance)
+	{
+		currentDistance += Physics::RAY_STEP;
+		if (currentDistance > maxDistance)
+			currentDistance = maxDistance;
+
+		// Get chunk
+		glm::vec3 resultPos = startPos + direction * currentDistance;
+		int chunkX = resultPos.x >= 0 ? resultPos.x / CHUNK_SIZE : resultPos.x / CHUNK_SIZE - 1;
+		int chunkY = resultPos.y >= 0 ? resultPos.y / CHUNK_SIZE : resultPos.y / CHUNK_SIZE - 1;
+		int chunkZ = resultPos.z >= 0 ? resultPos.z / CHUNK_SIZE : resultPos.z / CHUNK_SIZE - 1;
+		Chunk* chunk = Planet::planet->GetChunk(ChunkPos(chunkX, chunkY, chunkZ));
+		if (chunk == nullptr)
+			continue;
+
+		// Get block pos
+		int localBlockX = (int)floor(resultPos.x) % CHUNK_SIZE;
+		int localBlockZ = (int)floor(resultPos.z) % CHUNK_SIZE;
+		int localBlockY = (int)floor(resultPos.y) % CHUNK_SIZE;
+
+		// Get block from chunk
+		unsigned int block = chunk->GetBlockAtPos(localBlockX, localBlockY, localBlockZ);
+
+		// Get result pos
+		int blockX = resultPos.x >= 0 ? (int)resultPos.x : (int)resultPos.x - 1;
+		int blockY = resultPos.y >= 0 ? (int)resultPos.y : (int)resultPos.y - 1;
+		int blockZ = resultPos.z >= 0 ? (int)resultPos.z : (int)resultPos.z - 1;
+
+		// Return true if it hit a block
+		if (block != 0 && Blocks::blocks[block].blockType != Block::LIQUID)
+			return { true, resultPos, chunk, 
+			blockX, blockY, blockZ,
+			localBlockX, localBlockY, localBlockZ};
+	}
+
+	return { false, glm::vec3(0), nullptr, 
+		0, 0, 0, 
+		0, 0, 0};
+}

ScuffedMinecraft/src/Physics.h

@@ -0,0 +1,30 @@
+#pragma once
+
+#include "glm/glm.hpp"
+#include "Planet.h"
+
+namespace Physics
+{
+	struct RaycastResult
+	{
+		bool hit;
+		glm::vec3 hitPos;
+		Chunk* chunk;
+		int blockX;
+		int blockY;
+		int blockZ;
+		int localBlockX;
+		int localBlockY;
+		int localBlockZ;
+			
+		RaycastResult(bool hit, glm::vec3 hitPos, Chunk* chunk, int blockX, int blockY, int blockZ, int localBlockX, int localBlockY, int localBlockZ)
+			: hit(hit), hitPos(hitPos), chunk(chunk), blockX(blockX), blockY(blockY), blockZ(blockZ), localBlockX(localBlockX), localBlockY(localBlockY), localBlockZ(localBlockZ)
+		{
+
+		}
+	};
+
+	RaycastResult Raycast(glm::vec3 startPos, glm::vec3 direction, float maxDistance);
+
+	static constexpr float RAY_STEP = 0.01f;
+}

ScuffedMinecraft/src/Planet.cpp

@@ -4,41 +4,109 @@
 #include <glad/glad.h>
 #include <GLFW/glfw3.h>
 
+#include "WorldGen.h"
+
 Planet* Planet::planet = nullptr;
 
+//static const unsigned int CHUNK_SIZE = 32;
+
 // Public
 Planet::Planet(Shader* solidShader, Shader* waterShader, Shader* billboardShader)
 	: solidShader(solidShader), waterShader(waterShader), billboardShader(billboardShader)
 {
-
+	chunkThread = std::thread(&Planet::ChunkThreadUpdate, this);
 }
 
 Planet::~Planet()
 {
-
+	shouldEnd = true;
+	chunkThread.join();
 }
 
-std::vector<unsigned int> Planet::GetChunkData(int chunkX, int chunkY, int chunkZ)
+void Planet::Update(glm::vec3 cameraPos)
 {
-	std::tuple<int, int, int> chunkTuple{ chunkX, chunkY, chunkZ };
+	camChunkX = cameraPos.x < 0 ? floor(cameraPos.x / CHUNK_SIZE) : cameraPos.x / CHUNK_SIZE;
+	camChunkY = cameraPos.y < 0 ? floor(cameraPos.y / CHUNK_SIZE) : cameraPos.y / CHUNK_SIZE;
+	camChunkZ = cameraPos.z < 0 ? floor(cameraPos.z / CHUNK_SIZE) : cameraPos.z / CHUNK_SIZE;
 
-	if (chunks.find(chunkTuple) == chunks.end())
+	glDisable(GL_BLEND);
+
+	chunksLoading = 0;
+	numChunks = 0;
+	numChunksRendered = 0;
+	chunkMutex.lock();
+	for (auto it = chunks.begin(); it != chunks.end(); )
 	{
-		return std::vector<unsigned int>{};
-		//return GenerateChunkData(chunkX, chunkY, chunkZ);
+		numChunks++;
+
+		if (!(*it->second).ready)
+			chunksLoading++;
+
+		int chunkX = (*it->second).chunkPos.x;
+		int chunkY = (*it->second).chunkPos.y;
+		int chunkZ = (*it->second).chunkPos.z;
+		if ((*it->second).ready && (abs(chunkX - camChunkX) > renderDistance ||
+			abs(chunkY - camChunkY) > renderDistance ||
+			abs(chunkZ - camChunkZ) > renderDistance))
+		{
+			// Out of range
+			// Add chunk data to delete queue
+			chunkDataDeleteQueue.push({ chunkX,     chunkY, chunkZ });
+			chunkDataDeleteQueue.push({ chunkX + 1, chunkY, chunkZ });
+			chunkDataDeleteQueue.push({ chunkX - 1, chunkY, chunkZ });
+			chunkDataDeleteQueue.push({ chunkX, chunkY + 1, chunkZ });
+			chunkDataDeleteQueue.push({ chunkX, chunkY - 1, chunkZ });
+			chunkDataDeleteQueue.push({ chunkX, chunkY, chunkZ + 1 });
+			chunkDataDeleteQueue.push({ chunkX, chunkY, chunkZ - 1 });
+
+			// Delete chunk
+			delete it->second;
+			it = chunks.erase(it);
 		}
 		else
 		{
-		return std::vector<unsigned int>{};
-		//return chunks.at(chunkTuple).chunkData;
+			numChunksRendered++;
+			(*it->second).Render(solidShader, billboardShader);
+			++it;
 		}
 	}
 
-void Planet::Update(float camX, float camY, float camZ)
+	glEnable(GL_BLEND);
+	waterShader->use();
+	for (auto it = chunks.begin(); it != chunks.end(); )
 	{
-	int camChunkX = camX < 0 ? floor(camX / chunkSize) : camX / chunkSize;
-	int camChunkY = camY < 0 ? floor(camY / chunkSize) : camY / chunkSize;
-	int camChunkZ = camZ < 0 ? floor(camZ / chunkSize) : camZ / chunkSize;
+		int chunkX = (*it->second).chunkPos.x;
+		int chunkY = (*it->second).chunkPos.y;
+		int chunkZ = (*it->second).chunkPos.z;
+
+		(*it->second).RenderWater(waterShader);
+		++it;
+	}
+
+	chunkMutex.unlock();
+}
+
+void Planet::ChunkThreadUpdate()
+{
+	while (!shouldEnd)
+	{
+		for (auto it = chunkData.begin(); it != chunkData.end(); )
+		{
+			ChunkPos pos = it->first;
+
+			if (chunks.find(pos) == chunks.end() &&
+				chunks.find({ pos.x + 1, pos.y, pos.z }) == chunks.end() &&
+				chunks.find({ pos.x - 1, pos.y, pos.z }) == chunks.end() &&
+				chunks.find({ pos.x, pos.y + 1, pos.z }) == chunks.end() &&
+				chunks.find({ pos.x, pos.y - 1, pos.z }) == chunks.end() &&
+				chunks.find({ pos.x, pos.y, pos.z + 1 }) == chunks.end() &&
+				chunks.find({ pos.x, pos.y, pos.z - 1 }) == chunks.end())
+			{
+				delete chunkData.at(pos);
+				chunkData.erase(pos);
+			}
+			++it;
+		}
 
 		// Check if camera moved to new chunk
 		if (camChunkX != lastCamX || camChunkY != lastCamY || camChunkZ != lastCamZ)
@@ -49,6 +117,7 @@ void Planet::Update(float camX, float camY, float camZ)
 			lastCamZ = camChunkZ;
 
 			// Current chunk
+			chunkMutex.lock();
 			chunkQueue = {};
 			if (chunks.find({ camChunkX, camChunkY, camChunkZ }) == chunks.end())
 				chunkQueue.push({ camChunkX, camChunkY, camChunkZ });
@@ -123,75 +192,270 @@ void Planet::Update(float camX, float camY, float camZ)
 					}
 				}
 			}
-	}
-	else if (chunksLoading == 0 && !chunkQueue.empty())
-	{
-		// Queue is not empty. Process front item in queue
-		glm::vec3 next = chunkQueue.front();
-		chunkQueue.pop();
 
-		std::tuple<int, int, int> chunkTuple{ next.x, next.y, next.z };
-
-		if (chunks.find(chunkTuple) == chunks.end())
-		{
-			chunks.try_emplace(chunkTuple,
-				chunkSize, next, solidShader, waterShader
-			);
-		}
-	}
-
-	glDisable(GL_BLEND);
-
-	chunksLoading = 0;
-	numChunks = 0;
-	numChunksRendered = 0;
-	for (auto it = chunks.begin(); it != chunks.end(); )
-	{
-		numChunks++;
-
-		if (!it->second.ready)
-			chunksLoading++;
-
-		int chunkX = it->second.chunkPos.x;
-		int chunkY = it->second.chunkPos.y;
-		int chunkZ = it->second.chunkPos.z;
-		if (it->second.ready && (abs(chunkX - camChunkX) > renderDistance ||
-			abs(chunkY - camChunkY) > renderDistance ||
-			abs(chunkZ - camChunkZ) > renderDistance))
-		{
-			it = chunks.erase(it);
+			chunkMutex.unlock();
 		}
 		else
 		{
-			numChunksRendered++;
-			it->second.Render(solidShader, billboardShader);
-			++it;
-		}
-	}
-
-	glEnable(GL_BLEND);
-	waterShader->use();
-	for (auto it = chunks.begin(); it != chunks.end(); )
+			chunkMutex.lock();
+			if (!chunkDataQueue.empty())
 			{
-		int chunkX = it->second.chunkPos.x;
-		int chunkY = it->second.chunkPos.y;
-		int chunkZ = it->second.chunkPos.z;
+				ChunkPos chunkPos = chunkDataQueue.front();
 
-		it->second.RenderWater(waterShader);
-		++it;
+				if (chunkData.find(chunkPos) != chunkData.end())
+				{
+					chunkDataQueue.pop();
+					chunkMutex.unlock();
+					continue;
+				}
+
+				chunkMutex.unlock();
+
+				uint16_t* d = new uint16_t[CHUNK_SIZE * CHUNK_SIZE * CHUNK_SIZE];
+				ChunkData* data = new ChunkData(d);
+
+				WorldGen::GenerateChunkData(chunkPos, d);
+
+				chunkMutex.lock();
+				chunkData[chunkPos] = data;
+				chunkDataQueue.pop();
+				chunkMutex.unlock();
+			}
+			else
+			{
+				if (!chunkQueue.empty())
+				{
+					// Check if chunk exists
+					ChunkPos chunkPos = chunkQueue.front();
+					if (chunks.find(chunkPos) != chunks.end())
+					{
+						chunkQueue.pop();
+						chunkMutex.unlock();
+						continue;
+					}
+
+					chunkMutex.unlock();
+
+					// Create chunk object
+					Chunk* chunk = new Chunk(chunkPos, solidShader, waterShader);
+
+					// Set chunk data
+					{
+						chunkMutex.lock();
+						if (chunkData.find(chunkPos) == chunkData.end())
+						{
+							chunkMutex.unlock();
+							uint16_t* d = new uint16_t[CHUNK_SIZE * CHUNK_SIZE * CHUNK_SIZE];
+
+							WorldGen::GenerateChunkData(chunkPos, d);
+
+							ChunkData* data = new ChunkData(d);
+
+							chunk->chunkData = data;
+
+							chunkMutex.lock();
+							chunkData[chunkPos] = data;
+							chunkMutex.unlock();
+						}
+						else
+						{
+							chunk->chunkData = chunkData.at(chunkPos);
+							chunkMutex.unlock();
 						}
 					}
 
-Chunk* Planet::GetChunk(int chunkX, int chunkY, int chunkZ)
+					// Set top data
 					{
-	std::tuple<int, int, int> chunkTuple{ chunkX, chunkY, chunkZ };
+						ChunkPos topPos(chunkPos.x, chunkPos.y + 1, chunkPos.z);
+						chunkMutex.lock();
+						if (chunkData.find(topPos) == chunkData.end())
+						{
+							chunkMutex.unlock();
+							uint16_t* d = new uint16_t[CHUNK_SIZE * CHUNK_SIZE * CHUNK_SIZE];
 
-	if (chunks.find(chunkTuple) == chunks.end())
+							WorldGen::GenerateChunkData(topPos, d);
+
+							ChunkData* data = new ChunkData(d);
+
+							chunk->upData = data;
+
+							chunkMutex.lock();
+							chunkData[topPos] = data;
+							chunkMutex.unlock();
+						}
+						else
 						{
+							chunk->upData = chunkData.at(topPos);
+							chunkMutex.unlock();
+						}
+					}
+
+					// Set bottom data
+					{
+						ChunkPos bottomPos(chunkPos.x, chunkPos.y - 1, chunkPos.z);
+						chunkMutex.lock();
+						if (chunkData.find(bottomPos) == chunkData.end())
+						{
+							chunkMutex.unlock();
+							uint16_t* d = new uint16_t[CHUNK_SIZE * CHUNK_SIZE * CHUNK_SIZE];
+
+							WorldGen::GenerateChunkData(bottomPos, d);
+
+							ChunkData* data = new ChunkData(d);
+
+							chunk->downData = data;
+
+							chunkMutex.lock();
+							chunkData[bottomPos] = data;
+							chunkMutex.unlock();
+						}
+						else
+						{
+							chunk->downData = chunkData.at(bottomPos);
+							chunkMutex.unlock();
+						}
+					}
+
+					// Set north data
+					{
+						ChunkPos northPos(chunkPos.x, chunkPos.y, chunkPos.z - 1);
+						chunkMutex.lock();
+						if (chunkData.find(northPos) == chunkData.end())
+						{
+							chunkMutex.unlock();
+							uint16_t* d = new uint16_t[CHUNK_SIZE * CHUNK_SIZE * CHUNK_SIZE];
+
+							WorldGen::GenerateChunkData(northPos, d);
+
+							ChunkData* data = new ChunkData(d);
+
+							chunk->northData = data;
+
+							chunkMutex.lock();
+							chunkData[northPos] = data;
+							chunkMutex.unlock();
+						}
+						else
+						{
+							chunk->northData = chunkData.at(northPos);
+							chunkMutex.unlock();
+						}
+					}
+
+					// Set south data
+					{
+						ChunkPos southPos(chunkPos.x, chunkPos.y, chunkPos.z + 1);
+						chunkMutex.lock();
+						if (chunkData.find(southPos) == chunkData.end())
+						{
+							chunkMutex.unlock();
+							uint16_t* d = new uint16_t[CHUNK_SIZE * CHUNK_SIZE * CHUNK_SIZE];
+
+							WorldGen::GenerateChunkData(southPos, d);
+
+							ChunkData* data = new ChunkData(d);
+
+							chunk->southData = data;
+
+							chunkMutex.lock();
+							chunkData[southPos] = data;
+							chunkMutex.unlock();
+						}
+						else
+						{
+							chunk->southData = chunkData.at(southPos);
+							chunkMutex.unlock();
+						}
+					}
+
+					// Set east data
+					{
+						ChunkPos eastPos(chunkPos.x + 1, chunkPos.y, chunkPos.z);
+						chunkMutex.lock();
+						if (chunkData.find(eastPos) == chunkData.end())
+						{
+							chunkMutex.unlock();
+							uint16_t* d = new uint16_t[CHUNK_SIZE * CHUNK_SIZE * CHUNK_SIZE];
+
+							WorldGen::GenerateChunkData(eastPos, d);
+
+							ChunkData* data = new ChunkData(d);
+
+							chunk->eastData = data;
+
+							chunkMutex.lock();
+							chunkData[eastPos] = data;
+							chunkMutex.unlock();
+						}
+						else
+						{
+							chunk->eastData = chunkData.at(eastPos);
+							chunkMutex.unlock();
+						}
+					}
+
+					// Set west data
+					{
+						ChunkPos westPos(chunkPos.x - 1, chunkPos.y, chunkPos.z);
+						chunkMutex.lock();
+						if (chunkData.find(westPos) == chunkData.end())
+						{
+							chunkMutex.unlock();
+							uint16_t* d = new uint16_t[CHUNK_SIZE * CHUNK_SIZE * CHUNK_SIZE];
+
+							WorldGen::GenerateChunkData(westPos, d);
+
+							ChunkData* data = new ChunkData(d);
+
+							chunk->westData = data;
+
+							chunkMutex.lock();
+							chunkData[westPos] = data;
+							chunkMutex.unlock();
+						}
+						else
+						{
+							chunk->westData = chunkData.at(westPos);
+							chunkMutex.unlock();
+						}
+					}
+
+					// Generate chunk mesh
+					chunk->GenerateChunkMesh();
+
+					// Finish
+					chunkMutex.lock();
+					chunks[chunkPos] = chunk;
+					chunkQueue.pop();
+					chunkMutex.unlock();
+				}
+				else
+				{
+					chunkMutex.unlock();
+
+					std::this_thread::sleep_for(std::chrono::milliseconds(1000));
+				}
+			}
+		}
+	}
+}
+
+Chunk* Planet::GetChunk(ChunkPos chunkPos)
+{
+	chunkMutex.lock();
+	if (chunks.find(chunkPos) == chunks.end())
+	{
+		chunkMutex.unlock();
 		return nullptr;
 	}
 	else
 	{
-		return &chunks.at(chunkTuple);
+		chunkMutex.unlock();
+		return chunks.at(chunkPos);
 	}
 }
+
+void Planet::ClearChunkQueue()
+{
+	lastCamX++;
+}

ScuffedMinecraft/src/Planet.h

@@ -5,9 +5,15 @@
 #include <string>
 #include <queue>
 #include <glm/glm.hpp>
+#include <thread>
+#include <mutex>
 
+#include "ChunkPos.h"
+#include "ChunkData.h"
 #include "Chunk.h"
-#include "TupleHash.h"
+#include "ChunkPosHash.h"
+
+constexpr unsigned int CHUNK_SIZE = 32;
 
 class Planet
 {
@@ -16,26 +22,38 @@ public:
 	Planet(Shader* solidShader, Shader* waterShader, Shader* billboardShader);
 	~Planet();
 
-	std::vector<unsigned int> GetChunkData(int chunkX, int chunkY, int chunkZ);
-	void Update(float camX, float camY, float camZ);
+	ChunkData* GetChunkData(ChunkPos chunkPos);
+	void Update(glm::vec3 cameraPos);
 
-	Chunk* GetChunk(int chunkX, int chunkY, int chunkZ);
+	Chunk* GetChunk(ChunkPos chunkPos);
+	void ClearChunkQueue();
+
+private:
+	void ChunkThreadUpdate();
 
 // Variables
 public:
 	static Planet* planet;
 	unsigned int numChunks = 0, numChunksRendered = 0;
-	static const unsigned int chunkSize = 32;
+	int renderDistance = 10;
+	int renderHeight = 3;
 
 private:
-	std::unordered_map<std::tuple<int, int, int>, Chunk> chunks;
-	std::queue<glm::vec3> chunkQueue;
-	int renderDistance = 3;
-	int renderHeight = 1;
+	std::unordered_map<ChunkPos, Chunk*, ChunkPosHash> chunks;
+	std::unordered_map<ChunkPos, ChunkData*, ChunkPosHash> chunkData;
+	std::queue<ChunkPos> chunkQueue;
+	std::queue<ChunkPos> chunkDataQueue;
+	std::queue<ChunkPos> chunkDataDeleteQueue;
 	unsigned int chunksLoading = 0;
 	int lastCamX = -100, lastCamY = -100, lastCamZ = -100;
+	int camChunkX = -100, camChunkY = -100, camChunkZ = -100;
 
 	Shader* solidShader;
 	Shader* waterShader;
 	Shader* billboardShader;
+
+	std::thread chunkThread;
+	std::mutex chunkMutex;
+
+	bool shouldEnd = false;
 };

ScuffedMinecraft/src/TupleHash.h

@@ -1,53 +0,0 @@
-#include <tuple>
-// function has to live in the std namespace 
-// so that it is picked up by argument-dependent name lookup (ADL).
-namespace std {
-    namespace
-    {
-
-        // Code from boost
-        // Reciprocal of the golden ratio helps spread entropy
-        //     and handles duplicates.
-        // See Mike Seymour in magic-numbers-in-boosthash-combine:
-        //     https://stackoverflow.com/questions/4948780
-
-        template <class T>
-        inline void hash_combine(std::size_t& seed, T const& v)
-        {
-            seed ^= hash<T>()(v) + 0x9e3779b9 + (seed << 6) + (seed >> 2);
-        }
-
-        // Recursive template code derived from Matthieu M.
-        template <class Tuple, size_t Index = std::tuple_size<Tuple>::value - 1>
-        struct HashValueImpl
-        {
-            static void apply(size_t& seed, Tuple const& tuple)
-            {
-                HashValueImpl<Tuple, Index - 1>::apply(seed, tuple);
-                hash_combine(seed, get<Index>(tuple));
-            }
-        };
-
-        template <class Tuple>
-        struct HashValueImpl<Tuple, 0>
-        {
-            static void apply(size_t& seed, Tuple const& tuple)
-            {
-                hash_combine(seed, get<0>(tuple));
-            }
-        };
-    }
-
-    template <typename ... TT>
-    struct hash<std::tuple<TT...>>
-    {
-        size_t
-            operator()(std::tuple<TT...> const& tt) const
-        {
-            size_t seed = 0;
-            HashValueImpl<std::tuple<TT...> >::apply(seed, tt);
-            return seed;
-        }
-
-    };
-}

ScuffedMinecraft/src/WorldGen.cpp

@@ -5,9 +5,12 @@
 #include <OpenSimplexNoise.hh>
 
 #include "Blocks.h"
+#include "Planet.h"
 
-void WorldGen::GenerateChunkData(int chunkX, int chunkY, int chunkZ, int chunkSize, std::vector<unsigned int>* chunkData)
+void WorldGen::GenerateChunkData(ChunkPos chunkPos, uint16_t* chunkData)
 {
+	static int chunkSize = CHUNK_SIZE;
+
 	// Init noise
 	static OSN::Noise<2> noise2D;
 	static OSN::Noise<3> noise3D;
@@ -284,14 +287,12 @@ void WorldGen::GenerateChunkData(int chunkX, int chunkY, int chunkZ, int chunkSi
 
 	static int waterLevel = 20;
 
-	// Set vector size
-	chunkData->reserve(chunkSize * chunkSize * chunkSize);
-
 	// Account for chunk position
-	int startX = chunkX * chunkSize;
-	int startY = chunkY * chunkSize;
-	int startZ = chunkZ * chunkSize;
+	int startX = chunkPos.x * chunkSize;
+	int startY = chunkPos.y * chunkSize;
+	int startZ = chunkPos.z * chunkSize;
 
+	int currentIndex = 0;
 	for (int x = 0; x < chunkSize; x++)
 	{
 		for (int z = 0; z < chunkSize; z++)
@@ -334,12 +335,12 @@ void WorldGen::GenerateChunkData(int chunkX, int chunkY, int chunkZ, int chunkSi
 				if (y + startY > noiseY)
 				{
 					if (y + startY <= waterLevel)
-						chunkData->push_back(Blocks::WATER);
+						chunkData[currentIndex] = Blocks::WATER;
 					else
-						chunkData->push_back(Blocks::AIR);
+						chunkData[currentIndex] = Blocks::AIR;
 				}
 				else if (cave)
-					chunkData->push_back(Blocks::AIR);
+					chunkData[currentIndex] = Blocks::AIR;
 				// Ground
 				else
 				{
@@ -357,7 +358,7 @@ void WorldGen::GenerateChunkData(int chunkX, int chunkY, int chunkZ, int chunkSi
 
 						if (noiseOre > oreSettings[i].chance)
 						{
-							chunkData->push_back(oreSettings[i].block);
+							chunkData[currentIndex] = oreSettings[i].block;
 							blockSet = true;
 							break;
 						}
@@ -366,13 +367,21 @@ void WorldGen::GenerateChunkData(int chunkX, int chunkY, int chunkZ, int chunkSi
 					if (!blockSet)
 					{
 						if (y + startY == noiseY)
-							chunkData->push_back(Blocks::GRASS_BLOCK);
-						else if (y + startY > 10)
-							chunkData->push_back(Blocks::DIRT_BLOCK);
+							if (noiseY > waterLevel + 1)
+								chunkData[currentIndex] = Blocks::GRASS_BLOCK;
 							else
-							chunkData->push_back(Blocks::STONE_BLOCK);
+								chunkData[currentIndex] = Blocks::SAND;
+						else if (y + startY > 10)
+							if (noiseY > waterLevel + 1)
+								chunkData[currentIndex] = Blocks::DIRT_BLOCK;
+							else
+								chunkData[currentIndex] = Blocks::SAND;
+						else
+							chunkData[currentIndex] = Blocks::STONE_BLOCK;
 					}
 				}
+
+				currentIndex++;
 			}
 		}
 	}
@@ -393,11 +402,11 @@ void WorldGen::GenerateChunkData(int chunkX, int chunkY, int chunkZ, int chunkSi
 						* surfaceSettings[s].amplitude;
 				}
 
-				if (noiseY + surfaceFeatures[i].offsetY > startY + 32 || noiseY + surfaceFeatures[i].sizeY + surfaceFeatures[i].offsetY < startY)
+				if (noiseY + surfaceFeatures[i].offsetY > startY + chunkSize || noiseY + surfaceFeatures[i].sizeY + surfaceFeatures[i].offsetY < startY)
 					continue;
 
-				// Check if it's in water
-				if (noiseY < waterLevel)
+				// Check if it's in water or on sand
+				if (noiseY < waterLevel + 2)
 					continue;
 				
 				// Check if it's in a cave
@@ -446,11 +455,11 @@ void WorldGen::GenerateChunkData(int chunkX, int chunkY, int chunkZ, int chunkSi
 								int localZ = featureZ + fZ + surfaceFeatures[i].offsetZ - startZ;
 								//std::cout << "FeatureZ: " << featureZ << ", fZ: " << fZ << ", startZ: " << startZ << ", localZ: " << localZ << '\n';
 
-								if (localX >= 32 || localX < 0)
+								if (localX >= chunkSize || localX < 0)
 									continue;
-								if (localY >= 32 || localY < 0)
+								if (localY >= chunkSize || localY < 0)
 									continue;
-								if (localZ >= 32 || localZ < 0)
+								if (localZ >= chunkSize || localZ < 0)
 									continue;
 								
 								int featureIndex = fY * surfaceFeatures[i].sizeX * surfaceFeatures[i].sizeZ + 
@@ -460,8 +469,8 @@ void WorldGen::GenerateChunkData(int chunkX, int chunkY, int chunkZ, int chunkSi
 								int localIndex = localX * chunkSize * chunkSize + localZ * chunkSize + localY;
 								//std::cout << "Local Index: " << localIndex << ", Max Index: " << chunkData->size() << '\n';
 
-								if (surfaceFeatures[i].replaceBlock[featureIndex] || chunkData->at(localIndex) == 0)
-									chunkData->at(localIndex) = surfaceFeatures[i].blocks[featureIndex];
+								if (surfaceFeatures[i].replaceBlock[featureIndex] || chunkData[localIndex] == 0)
+									chunkData[localIndex] = surfaceFeatures[i].blocks[featureIndex];
 							}
 						}
 					}

ScuffedMinecraft/src/WorldGen.h

@@ -3,9 +3,10 @@
 #include <vector>
 #include "NoiseSettings.h"
 #include "SurfaceFeature.h"
+#include "ChunkData.h"
+#include "glm/glm.hpp"
 
 namespace WorldGen
 {
-	void GenerateChunkData(int chunkX, int chunkY, int chunkZ, int chunkSize, std::vector<unsigned int>* chunkData);
-
+	void GenerateChunkData(ChunkPos chunkPos, uint16_t* chunkData);
 }