Resource loading from tar, Restructuring

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "dependencies/microtar"]
+	path = dependencies/microtar
+	url = https://github.com/MrLetsplay2003/microtar.git

CMakeLists.txt

@@ -3,23 +3,54 @@ cmake_minimum_required(VERSION 3.10)
 project(KekEngine VERSION 1.0)
 
 option(BUILD_SHARED_LIBS "Build as a shared library" ON)
+option(KEKENGINE_DEBUG "Build with debug information" OFF)
+option(KEKENGINE_BUILD_KEKGAME "Build kekgame" OFF)
 
-file(GLOB KEKENGINE_SOURCE_FILES "src/kekengine/cpp/*.cpp")
-file(GLOB KEKGAME_SOURCE_FILES "src/kekgame/cpp/*.cpp")
+message("Build shared libs: ${BUILD_SHARED_LIBS}")
+message("Debug: ${KEKENGINE_DEBUG}")
+message("Build kekgame: ${KEKENGINE_BUILD_KEKGAME}")
 
 set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
 
+set(KEKENGINE_RESOURCE_DIR "${CMAKE_SOURCE_DIR}/src/kekengine/res")
+set(KEKGAME_RESOURCE_DIR "${CMAKE_SOURCE_DIR}/src/kekgame/res")
+
+file(GLOB KEKENGINE_SOURCE_FILES "src/kekengine/cpp/*.cpp")
+file(GLOB_RECURSE KEKENGINE_RESOURCE_FILES "${KEKENGINE_RESOURCE_DIR}/*")
+file(GLOB_RECURSE KEKENGINE_RELATIVE_RESOURCE_FILES RELATIVE ${KEKENGINE_RESOURCE_DIR} "${KEKENGINE_RESOURCE_DIR}/*")
+
+file(GLOB KEKGAME_SOURCE_FILES "src/kekgame/cpp/*.cpp")
+file(GLOB_RECURSE KEKGAME_RESOURCE_FILES "${KEKGAME_RESOURCE_DIR}/*")
+file(GLOB_RECURSE KEKGAME_RELATIVE_RESOURCE_FILES RELATIVE ${KEKGAME_RESOURCE_DIR} "${KEKGAME_RESOURCE_DIR}/*")
+
 add_compile_definitions(FT_CONFIG_OPTION_ERROR_STRINGS) # Freetype error strings
 
+if(${KEKENGINE_DEBUG})
 	add_compile_options(-Wall -g)
+	message("Compiler flags A")
+else()
+	add_compile_options(-Wall -O3)
+	message("Compiler flags B")
+endif()
+
+
+add_subdirectory(dependencies/microtar)
+
+# kekengine resources
+add_custom_target(kekengine_res ALL DEPENDS ${KEKENGINE_RESOURCE_FILES})
+
+add_custom_command(TARGET kekengine_res PRE_BUILD
+	BYPRODUCTS ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/resources.tar
+	COMMAND ${CMAKE_COMMAND} -E
+		chdir ${KEKENGINE_RESOURCE_DIR}
+		tar cf ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/resources.tar ${KEKENGINE_RELATIVE_RESOURCE_FILES})
 
 # libkekengine
-
 add_library(kekengine ${KEKENGINE_SOURCE_FILES})
 
-target_link_libraries(kekengine PUBLIC glfw GLEW GL)
+target_link_libraries(kekengine PUBLIC glfw GLEW GL microtar)
 target_include_directories(kekengine PRIVATE "src/kekengine/include")
 target_compile_definitions(kekengine PUBLIC KEKENGINE_TARGET_LINUX)
 
@@ -28,8 +59,17 @@ pkg_check_modules(GTK3 REQUIRED gtk+-3.0)
 target_link_libraries(kekengine PUBLIC ${GTK3_LIBRARIES})
 target_include_directories(kekengine PRIVATE ${GTK3_INCLUDE_DIRS})
 
-# kekgame
+# kekgame resources
+add_custom_target(kekgame_res ALL
+	DEPENDS ${KEKGAME_RESOURCE_FILES} kekengine_res)
 
+add_custom_command(TARGET kekgame_res PRE_BUILD
+	BYPRODUCTS ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/resources.tar
+	COMMAND ${CMAKE_COMMAND} -E
+		chdir ${KEKGAME_RESOURCE_DIR}
+		tar rf ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/resources.tar ${KEKGAME_RELATIVE_RESOURCE_FILES})
+
+# kekgame
 add_executable(kekgame ${KEKGAME_SOURCE_FILES})
 
 target_link_libraries(kekgame PUBLIC kekengine)

dependencies/microtar

@@ -0,0 +1 @@
+Subproject commit b240d953b12dc87c625743a9fb55634b0f0f3608

src/kekengine/cpp/kekengine.cpp

@@ -119,8 +119,13 @@ int init() {
 
 	glEnable(GL_DEPTH_TEST);
 	glEnable(GL_MULTISAMPLE);
-	//glEnable(GL_CULL_FACE);
-	//glCullFace(GL_BACK);
+	glEnable(GL_CULL_FACE);
+	glCullFace(GL_BACK);
+
+	if(Resource::init() != KEK_SUCCESS) {
+		glfwTerminate();
+		return KEK_ERROR;
+	}
 
 	glfwSetCursorPosCallback(window, onCursorPosCallback);
 	glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
@@ -129,10 +134,9 @@ int init() {
 
 	cam = new Camera();
 
-	kek::MemoryBuffer *buf = kek::Resource::loadResource("../src/res/object/sphere/Sphere.obj");
-	if(!buf) std::cout << "err buf" << std::endl;
-	kek::Mesh *mesh = kek::ObjParser::parse(buf);
-	kek::Shader *shader = new kek::Shader("../src/res/shader/mesh/vertex.glsl", "../src/res/shader/mesh/fragment.glsl");
+	MemoryBuffer *buf = Resource::loadResource("object/sphere/Sphere.obj");
+	Mesh *mesh = ObjParser::parse(buf);
+	Shader *shader = new Shader("shader/mesh/vertex.glsl", "shader/mesh/fragment.glsl");
 	while(1) {
 		// Clear the screen
 		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

src/kekengine/cpp/objparser.cpp

@@ -74,10 +74,6 @@ Mesh *parse(MemoryBuffer *buf) {
 		}
 	}
 
-	for(glm::vec3 v : vertexNormals) {
-		std::cout << v.x << " " << v.y << " " << v.z << std::endl;
-	}
-
 	return new Mesh(vertices, indices);
 }
 

src/kekengine/cpp/resource.cpp

@@ -1,8 +1,29 @@
 #include "resource.h"
 
+#include "constants.h"
+#include "errordialog.h"
+
+#include "microtar.h"
+
 namespace kek::Resource {
 
-MemoryBuffer *loadResource(std::string path) {
+static mtar_t resources;
+
+int init() {
+	int r = mtar_open(&resources, "resources.tar", "r");
+	if(r != MTAR_ESUCCESS) {
+		ErrorDialog::showError("Failed to open resources.tar: " + std::string(mtar_strerror(r)));
+		return KEK_ERROR;
+	}
+
+	return KEK_SUCCESS;
+}
+
+void exit() {
+	mtar_close(&resources);
+}
+
+/*MemoryBuffer *loadResource(std::string path) {
 	std::ifstream in = std::ifstream(path, std::ios::binary);
 	if(!in.good()) return nullptr;
 	in.ignore(std::numeric_limits<std::streamsize>::max());
@@ -12,6 +33,24 @@ MemoryBuffer *loadResource(std::string path) {
 	char *data = (char *) malloc(size);
 	in.read(data, size);
 	return new MemoryBuffer(data, size);
+}*/
+
+MemoryBuffer *loadResource(std::string path) {
+	mtar_header_t h;
+	int r = mtar_find(&resources, path.c_str(), &h);
+	if(r != MTAR_ESUCCESS) {
+		if(r == MTAR_ENOTFOUND) std::cerr << "Failed to find resource '" << path << "': " << mtar_strerror(r) << std::endl;
+		return nullptr;
+	}
+
+	void *buf = malloc(h.size);
+	r = mtar_read_data(&resources, buf, h.size);
+	if(r != MTAR_ESUCCESS) {
+		std::cerr << "Failed to read resource '" << path << "': " << mtar_strerror(r) << std::endl;
+		return nullptr;
+	}
+
+	return new MemoryBuffer((char *) buf, h.size);
 }
 
 }

src/kekengine/include/resource.h

@@ -7,6 +7,8 @@
 
 namespace kek::Resource {
 
+int init();
+
 MemoryBuffer *loadResource(std::string path);
 
 }