3D scene stable

3DScene/private/LuaFormat.cpp

@@ -0,0 +1,220 @@
+
+#include "Scene.hpp"
+
+extern "C" {
+#include "lauxlib.h"
+#include "lualib.h"
+}
+
+#include <filesystem>
+
+// Function to read a Lua table representing RenderSettings
+int readRenderSettings(lua_State* L, tp::RenderSettings& settings) {
+	lua_getglobal(L, "RenderSettings");
+	if (!lua_istable(L, -1)) {
+		printf("RenderSettings is not a table.\n");
+		return 0; // Error
+	}
+
+	// Read depth field
+	lua_getfield(L, -1, "depth");
+	if (lua_isnumber(L, -1)) {
+		settings.depth = (int) lua_tonumber(L, -1);
+	} else {
+		printf("RenderSettings 'depth' field is missing or not a number.\n");
+		lua_pop(L, 1); // Pop the 'depth' field
+		return 0;      // Error
+	}
+	lua_pop(L, 1); // Pop the 'depth' field
+
+	// Read spray field
+	lua_getfield(L, -1, "spray");
+	if (lua_isnumber(L, -1)) {
+		settings.spray = (int) lua_tonumber(L, -1);
+	} else {
+		printf("RenderSettings 'spray' field is missing or not a number.\n");
+		lua_pop(L, 1); // Pop the 'spray' field
+		return 0;      // Error
+	}
+	lua_pop(L, 1); // Pop the 'spray' field
+
+	// Read depth field
+	lua_getfield(L, -1, "multisampling");
+	if (lua_isnumber(L, -1)) {
+		settings.multisampling = (int) lua_tonumber(L, -1);
+	} else {
+		printf("RenderSettings 'depth' field is missing or not a number.\n");
+		lua_pop(L, 1); // Pop the 'depth' field
+		return 0;      // Error
+	}
+	lua_pop(L, 1); // Pop the 'depth' field
+
+	return 1; // Success
+}
+
+// Function to read a Lua table representing a light
+int readLight(lua_State* L, tp::PointLight* light) {
+	lua_getfield(L, -1, "pos"); // Get the "pos" field from the light table
+	if (!lua_istable(L, -1)) {
+		printf("Light is missing the 'pos' table.\n");
+		return 0; // Error
+	}
+	for (int i = 0; i < 3; i++) {
+		lua_rawgeti(L, -1, i + 1); // Index is 1-based in Lua
+		if (!lua_isnumber(L, -1)) {
+			printf("Light 'pos' field is not a number at index %d.\n", i);
+			lua_pop(L, 2); // Pop both the number and the 'pos' table
+			return 0;      // Error
+		}
+		light->pos[i] = lua_tonumber(L, -1);
+		lua_pop(L, 1); // Pop the number
+	}
+	lua_pop(L, 1); // Pop the 'pos' table
+
+	lua_getfield(L, -1, "intensity"); // Get the "intensity" field from the light table
+	if (!lua_isnumber(L, -1)) {
+		printf("Light is missing the 'intensity' field or it's not a number.\n");
+		lua_pop(L, 1); // Pop the 'intensity' field
+		return 0;      // Error
+	}
+	light->intensity = lua_tonumber(L, -1);
+	lua_pop(L, 1); // Pop the 'intensity' field
+
+	return 1; // Success
+}
+
+bool tp::Scene::loadLuaFormat(const std::string& scenePath) {
+	lua_State* L = luaL_newstate();
+	luaL_openlibs(L);
+
+	namespace fs = std::filesystem;
+
+	fs::path fullPath(scenePath);
+
+	// Extract the filename
+	std::string fileName = fullPath.filename().string();
+
+	// Remove the filename from the path
+	fs::path directoryPath = fullPath.remove_filename();
+
+	if (luaL_dofile(L, scenePath.c_str()) != 0) {
+		lua_close(L);
+		printf("Cant open scene script.\n");
+		return false;
+	}
+
+	lua_getglobal(L, "Meshes");
+
+	if (lua_isstring(L, -1)) {
+		std::string meshesPath = lua_tostring(L, -1);
+
+		directoryPath /= meshesPath;
+
+		if (!loadOBJFormat(directoryPath.string())) {
+			printf("No 'meshes' loaded - check ur .obj path and validate content of .obj .\n");
+			return false;
+		}
+
+	} else {
+		printf("No 'meshes' path given.\n");
+		return false;
+	}
+
+	// --- camera
+
+	// Access Camera table
+	lua_getglobal(L, "Camera");
+	if (!lua_istable(L, -1)) {
+		printf("Camera is not a table.\n");
+		lua_close(L);
+		return false;
+	}
+
+	// Verify you are inside the "Camera" table
+	int cameraTableIndex = lua_gettop(L); // Get the index of the "Camera" table
+
+	// Access the "pos" field and validate it
+	lua_getfield(L, cameraTableIndex, "pos");
+	if (!lua_istable(L, -1) || lua_rawlen(L, -1) != 3) {
+		printf("Invalid 'pos' field in Camera table.\n");
+		lua_close(L);
+		return false;
+	}
+
+	// Read the values from the table
+	float pos[3];
+	for (int i = 0; i < 3; i++) {
+		lua_rawgeti(L, -1, i + 1);
+		if (lua_isnumber(L, -1)) {
+			pos[i] = lua_tonumber(L, -1);
+		} else {
+			printf("Invalid 'pos' field value at index %d.\n", i + 1);
+			lua_close(L);
+			return false;
+		}
+		lua_pop(L, 1);
+	}
+
+	// Access the "size_x" field and validate it
+	lua_getfield(L, cameraTableIndex, "size_x");
+	if (!lua_isnumber(L, -1)) {
+		printf("Invalid or missing 'size_x' field in Camera table.\n");
+		lua_close(L);
+		return false;
+	}
+	int size_x = lua_tointeger(L, -1);
+	lua_pop(L, 1); // Pop the 'size_x' value from the stack
+
+	// Access the "size_y" field and validate it
+	lua_getfield(L, cameraTableIndex, "size_y");
+	if (!lua_isnumber(L, -1)) {
+		printf("Invalid or missing 'size_y' field in Camera table.\n");
+		lua_close(L);
+		return false;
+	}
+	int size_y = lua_tointeger(L, -1);
+
+	mRenderSettings.size = { (tp::halnf) size_x, (tp::halnf) size_y };
+
+	mCamera.lookAtPoint({ 0, 0, 0 }, { pos[0], pos[1], pos[2] }, { 0, 0, 1 });
+	mCamera.setFOV(3.14 / 4);
+	mCamera.setFar(100);
+	mCamera.setRatio((tp::halnf) size_y / (tp::halnf) size_x);
+
+	// ---------- LIGHTS
+	{
+		lua_getglobal(L, "Lights");
+		if (!lua_istable(L, -1)) {
+			printf("Lights is not a table.\n");
+			lua_close(L);
+			return false; // Error
+		}
+
+		// Read and process each light in the "Lights" table
+		int numLights = lua_rawlen(L, -1); // Get the number of lights in the table
+		for (int i = 1; i <= numLights; i++) {
+			lua_rawgeti(L, -1, i); // Get the i-th element (light) from the table
+			if (lua_istable(L, -1)) {
+				tp::PointLight light;
+				if (!readLight(L, &light)) {
+					printf("Cant read lights data\n");
+					lua_close(L);
+					return false; // Error
+				}
+				mLights.append(light);
+			}
+			lua_pop(L, 1); // Pop the i-th light table
+		}
+	}
+
+	// ----------- settings --------------
+	if (!readRenderSettings(L, mRenderSettings)) {
+		printf("Cant Read Render Settings");
+		lua_close(L);
+		return false; // Error
+	}
+
+	lua_close(L);
+
+	return true;
+}

3DScene/private/OBJFormat.cpp

@@ -10,7 +10,7 @@ extern "C" {
 
 #include <filesystem>
 
-bool tp::Scene::load(const std::string& objetsPath) {
+bool tp::Scene::loadOBJFormat(const std::string& objetsPath) {
 	using namespace tp;
 
 	objl::Loader Loader;

3DScene/private/Scene.cpp

@@ -1,2 +1,6 @@
 
-#include "Scene.hpp"
+#include "Scene.hpp"
+
+bool tp::Scene::load(const std::string& scenePath) {
+	return loadLuaFormat(scenePath);
+}