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ArtemPopofArtemPopof
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Merge pull request #2 from OpenGameOrg/v0.0.1a
First outlines, basic rendering and camera features
2 parents 4e4ae22 + d145797 commit cc1417e

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‎.gitignore‎

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# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
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hs_err_pid*
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.idea/
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target/

‎pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>org.opengame</groupId>
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<artifactId>engine</artifactId>
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<version>1.0-SNAPSHOT</version>
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<properties>
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<maven.compiler.source>11</maven.compiler.source>
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<maven.compiler.target>11</maven.compiler.target>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<lwjgl.version>3.3.1</lwjgl.version>
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<joml.version>1.10.5</joml.version>
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<lwjgl.natives>natives-linux</lwjgl.natives>
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</properties>
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<dependencyManagement>
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<dependencies>
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<dependency>
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<groupId>org.lwjgl</groupId>
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<artifactId>lwjgl-bom</artifactId>
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<version>${lwjgl.version}</version>
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<scope>import</scope>
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<type>pom</type>
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</dependency>
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</dependencies>
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</dependencyManagement>
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<dependencies>
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<dependency>
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<groupId>org.lwjgl</groupId>
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<artifactId>lwjgl</artifactId>
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</dependency>
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<dependency>
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<groupId>org.lwjgl</groupId>
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<artifactId>lwjgl</artifactId>
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<classifier>${lwjgl.natives}</classifier>
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</dependency>
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<dependency>
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<groupId>org.lwjgl</groupId>
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<artifactId>lwjgl-bgfx</artifactId>
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</dependency>
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<dependency>
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<groupId>org.lwjgl</groupId>
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<artifactId>lwjgl-bgfx</artifactId>
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<classifier>${lwjgl.natives}</classifier>
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</dependency>
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<dependency>
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<groupId>org.lwjgl</groupId>
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<artifactId>lwjgl-glfw</artifactId>
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</dependency>
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<dependency>
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<groupId>org.lwjgl</groupId>
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<artifactId>lwjgl-glfw</artifactId>
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<classifier>${lwjgl.natives}</classifier>
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</dependency>
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<dependency>
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<groupId>org.lwjgl</groupId>
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<artifactId>lwjgl-assimp</artifactId>
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</dependency>
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<dependency>
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<groupId>org.lwjgl</groupId>
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<artifactId>lwjgl-assimp</artifactId>
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<classifier>${lwjgl.natives}</classifier>
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</dependency>
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<dependency>
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<groupId>org.joml</groupId>
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<artifactId>joml</artifactId>
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<version>${joml.version}</version>
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</dependency>
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<dependency>
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<groupId>org.projectlombok</groupId>
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<artifactId>lombok</artifactId>
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<version>1.18.24</version>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>org.apache.logging.log4j</groupId>
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<artifactId>log4j-api</artifactId>
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<version>2.19.0</version>
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</dependency>
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<dependency>
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<groupId>org.apache.logging.log4j</groupId>
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<artifactId>log4j-core</artifactId>
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<version>2.19.0</version>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<artifactId>maven-assembly-plugin</artifactId>
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<configuration>
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<archive>
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<manifest>
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<mainClass>org.opengame.engine.TestClient</mainClass>
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</manifest>
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</archive>
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<descriptorRefs>
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<descriptorRef>jar-with-dependencies</descriptorRef>
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</descriptorRefs>
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</configuration>
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</plugin>
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</plugins>
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</build>
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</project>

‎src/main/java/org/opengame/engine/Engine.java‎

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package org.opengame.engine;
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import lombok.Getter;
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import lombok.Setter;
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import lombok.extern.java.Log;
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import lombok.extern.log4j.Log4j2;
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import lombok.extern.slf4j.Slf4j;
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import org.joml.Vector2f;
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import org.lwjgl.PointerBuffer;
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import org.lwjgl.bgfx.BGFXInit;
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import org.lwjgl.glfw.GLFWErrorCallback;
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import org.lwjgl.glfw.GLFWNativeCocoa;
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import org.lwjgl.glfw.GLFWNativeWin32;
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import org.lwjgl.glfw.GLFWNativeX11;
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import org.lwjgl.system.MemoryStack;
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import org.lwjgl.system.Platform;
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import org.opengame.engine.app.AppConfig;
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import org.opengame.engine.event.EventBus;
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import org.opengame.engine.event.EventType;
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import org.opengame.engine.event.KeyEventData;
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import org.opengame.engine.event.MouseEventData;
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import org.opengame.engine.scene.Scene;
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import java.nio.ByteBuffer;
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import java.util.Objects;
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import static org.lwjgl.bgfx.BGFX.*;
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import static org.lwjgl.glfw.GLFW.*;
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import static org.lwjgl.system.MemoryUtil.NULL;
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/**
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* Entry point for engine, init here
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*/
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@Log
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public class Engine {
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private static Engine instance;
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private long windowHandle;
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@Getter
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private AppConfig config;
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@Getter
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@Setter
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private Scene currentScene;
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private float tickTime = 1000;
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private int msPerUpdate = 1000 / 20;
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/**
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* Init Vulkan context and window
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*/
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public void Init(AppConfig config) {
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log.info("Init");
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log.info("Working directory: " + config.getWorkingDirectory());
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instance = this;
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this.config = config;
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initWindow(config);
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}
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private void initWindow(AppConfig config) {
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if (!glfwInit()) {
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throw new RuntimeException("Cannot initialize GLFW");
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}
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GLFWErrorCallback.createPrint().set();
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glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
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glfwWindowHint(GLFW_RESIZABLE, GLFW_FALSE);
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windowHandle = glfwCreateWindow(config.getWindowWidth(), config.getWindowHeight(),
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config.getAppName(), NULL, NULL);
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setupInputCallbacks();
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try (MemoryStack stack = MemoryStack.stackPush()) {
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BGFXInit init = BGFXInit.malloc();
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bgfx_init_ctor(init);
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init.type(BGFX_RENDERER_TYPE_OPENGL);
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init.resolution(it -> it
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.width(config.getWindowWidth())
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.height(config.getWindowHeight())
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.reset(BGFX_RESET_VSYNC));
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switch (Platform.get()) {
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case LINUX:
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init.platformData()
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.ndt(GLFWNativeX11.glfwGetX11Display())
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.nwh(GLFWNativeX11.glfwGetX11Window(windowHandle));
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break;
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case MACOSX:
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init.platformData()
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.nwh(GLFWNativeCocoa.glfwGetCocoaWindow(windowHandle));
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break;
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case WINDOWS:
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init.platformData()
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.nwh(GLFWNativeWin32.glfwGetWin32Window(windowHandle));
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break;
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}
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if (!bgfx_init(init)) {
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throw new RuntimeException("Error initializing bgfx renderer");
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}
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}
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logAvailableDevices();
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logAvailableRenderers();
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log.info("bgfx renderer: " + bgfx_get_renderer_name(bgfx_get_renderer_type()));
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bgfx_set_debug(BGFX_DEBUG_TEXT);
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bgfx_set_view_clear(0, BGFX_CLEAR_COLOR | BGFX_CLEAR_DEPTH, 0x303030ff, 1.0f, 0);
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}
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private void logAvailableRenderers() {
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var types = new int[BGFX_RENDERER_TYPE_COUNT];
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var rendererCount = bgfx_get_supported_renderers(types);
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log.info("Supported renderers:");
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for (int i = 0; i < rendererCount; i++) {
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log.info(bgfx_get_renderer_name(types[i]));
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}
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}
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private void logAvailableDevices() {
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}
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private void setupInputCallbacks() {
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glfwSetKeyCallback(windowHandle, (window, key, scancode, action, mods) -> {
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if (key == GLFW_KEY_ESCAPE && action == GLFW_RELEASE) {
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glfwSetWindowShouldClose(window, true);
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}
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if (action == GLFW_PRESS || action == GLFW_RELEASE) {
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EventBus.broadcastEvent(EventType.KEY_PRESSED, new KeyEventData(key, action == GLFW_PRESS));
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}
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});
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glfwSetMouseButtonCallback(windowHandle, (window, button, action, mods) -> {
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EventBus.broadcastEvent(EventType.MOUSE_BUTTON_EVENT, new KeyEventData(button, action == GLFW_PRESS));
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});
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glfwSetCursorPosCallback(windowHandle, (window, xpos, ypos) -> {
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EventBus.broadcastEvent(EventType.MOUSE_MOVED, new MouseEventData(xpos, ypos));
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});
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}
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public static void setCursorPos(Vector2f cursorPos) {
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glfwSetCursorPos(instance.windowHandle, cursorPos.x, cursorPos.y);
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}
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public void startLoop() {
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long lastTime;
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long startTime = lastTime = glfwGetTimerValue();
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while (!glfwWindowShouldClose(windowHandle)) {
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glfwPollEvents();
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long now = glfwGetTimerValue();
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long frameTime = now - lastTime;
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lastTime = now;
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double freq = glfwGetTimerFrequency();
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double toMs = 1000.0 / freq;
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double time = (now - startTime) / freq;
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bgfx_set_view_rect(0, 0, 0, config.getWindowWidth(), config.getWindowHeight());
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bgfx_touch(0);
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bgfx_dbg_text_clear(0, false);
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bgfx_dbg_text_printf(0, 1, 0x1f, "Hello bgfx!");
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var frameMs = (float) toMs * frameTime;
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if (currentScene != null) {
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if (tickTime >= msPerUpdate) {
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currentScene.update();
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tickTime = 0;
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}
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tickTime += frameMs;
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currentScene.render((float) time, frameMs);
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}
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bgfx_frame(false);
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}
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bgfx_shutdown();
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glfwDestroyWindow(windowHandle);
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glfwTerminate();
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}
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public static int getRenderer() {
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return bgfx_get_renderer_type();
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}
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public static String getWorkingDirectory() {
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return instance.config.getWorkingDirectory();
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}
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public static Scene getCurrentScene() {
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return instance.currentScene;
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}
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public static void setScene(Scene scene) {
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instance.currentScene = scene;
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}
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public static int getScreenWidth() {
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return instance.config.getWindowWidth();
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}
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public static int getScreenHeight() {
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return instance.getConfig().getWindowHeight();
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}
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}

‎src/main/java/org/opengame/engine/TestClient.java‎

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package org.opengame.engine;
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import lombok.extern.java.Log;
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import org.joml.Vector3f;
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import org.opengame.engine.app.AppConfig;
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import org.opengame.engine.camera.FlyingCamera;
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import org.opengame.engine.scene.MeshLoader;
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import org.opengame.engine.render.TestCube;
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import org.opengame.engine.scene.Scene;
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import java.io.IOException;
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import java.net.URISyntaxException;
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@Log
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public class TestClient {
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public static void main(String[] args) throws IOException, InterruptedException, URISyntaxException {
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log.info("LOG TEST");
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// start engine
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var engine = new Engine();
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var config = new AppConfig();
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if (args.length > 0) {
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config.setWorkingDirectory(args[0]);
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}
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engine.Init(config);
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var scene = new Scene();
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var camera = (FlyingCamera) scene.getCamera();
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camera.setFlySpeed(0.5f);
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// for (int i = 0; i < 1; i++) {
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// scene.add(new TestCube());
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// }
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var model2 = MeshLoader.loadModel( Engine.getWorkingDirectory() + "models/cube.obj");
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model2.setTexture("flowers_cloth.dds");
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model2.setRotation(new Vector3f(5, 11.4f, 0));
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model2.setPosition(new Vector3f(0, 4, 20));
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scene.add(model2);
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var model3 = MeshLoader.loadModel( Engine.getWorkingDirectory() + "models/cube.obj");
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model3.setTexture("cat.dds");
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model3.setRotation(new Vector3f(5, 21.4f, 0));
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model3.setPosition(new Vector3f(11, 4, 20));
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scene.add(model3);
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var model = MeshLoader.loadModel( Engine.getWorkingDirectory() + "models/cube.obj");
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model.setRotation(new Vector3f(0, 1.4f, 0));
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model.setPosition(new Vector3f(0, 1, 20));
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scene.add(model);
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engine.setCurrentScene(scene);
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log.info("Current scene stats: " + scene.getStats());
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engine.startLoop();
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}
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}

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