Create model matrix for Object

app/src/main/java/com/bartlomiejpluta/samplegame/core/gl/object/mesh/Mesh.java

@@ -1,6 +1,8 @@
 package com.bartlomiejpluta.samplegame.core.gl.object.mesh;
 
 import com.bartlomiejpluta.samplegame.core.gl.render.Renderable;
+import com.bartlomiejpluta.samplegame.core.gl.shader.manager.ShaderManager;
+import com.bartlomiejpluta.samplegame.core.gl.shader.program.ShaderProgram;
 import org.lwjgl.opengl.GL15;
 import org.lwjgl.system.MemoryStack;
 
@@ -44,7 +46,7 @@ public class Mesh implements Renderable {
    }
 
    @Override
-   public void render() {
+   public void render(ShaderManager shaderManager) {
       glBindVertexArray(vaoId);
       glEnableVertexAttribArray(0);
       glDrawElements(GL_TRIANGLES, elementsCount, GL_UNSIGNED_INT, 0);

app/src/main/java/com/bartlomiejpluta/samplegame/core/gl/render/DefaultRenderer.java

@@ -1,18 +1,14 @@
 package com.bartlomiejpluta.samplegame.core.gl.render;
 
-import com.bartlomiejpluta.samplegame.core.ui.Window;
+import com.bartlomiejpluta.samplegame.core.gl.shader.constant.UniformName;
 import com.bartlomiejpluta.samplegame.core.gl.shader.manager.ShaderManager;
+import com.bartlomiejpluta.samplegame.core.ui.Window;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
-import org.lwjgl.system.MemoryStack;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 
 import static org.lwjgl.opengl.GL15.*;
-import static org.lwjgl.opengl.GL20.glEnableVertexAttribArray;
-import static org.lwjgl.opengl.GL20.glVertexAttribPointer;
-import static org.lwjgl.opengl.GL30.glBindVertexArray;
-import static org.lwjgl.opengl.GL30.glGenVertexArrays;
 
 @Slf4j
 @Component
@@ -23,7 +19,10 @@ public class DefaultRenderer implements Renderer {
    @Override
    public void init() {
       log.info("Initializing renderer");
-      shaderManager.createShader("default", "/shaders/default.vs", "/shaders/default.fs");
+      shaderManager
+              .createShader("default", "/shaders/default.vs", "/shaders/default.fs")
+              .selectShader("default")
+              .createUniform(UniformName.UNI_MODEL_MATRIX);
    }
 
    @Override
@@ -33,7 +32,7 @@ public class DefaultRenderer implements Renderer {
 
       shaderManager.selectShader("default").useSelectedShader();
 
-      renderable.render();
+      renderable.render(shaderManager);
 
       shaderManager.detachCurrentShader();
    }

app/src/main/java/com/bartlomiejpluta/samplegame/core/gl/render/Renderable.java

@@ -1,6 +1,9 @@
 package com.bartlomiejpluta.samplegame.core.gl.render;
 
+import com.bartlomiejpluta.samplegame.core.gl.shader.manager.ShaderManager;
+import com.bartlomiejpluta.samplegame.core.gl.shader.program.ShaderProgram;
+
 public interface Renderable {
-   void render();
+   void render(ShaderManager shaderManager);
    void cleanUp();
 }

app/src/main/java/com/bartlomiejpluta/samplegame/core/gl/shader/constant/UniformName.java

@@ -0,0 +1,5 @@
+package com.bartlomiejpluta.samplegame.core.gl.shader.constant;
+
+public interface UniformName {
+   public static final String UNI_MODEL_MATRIX = "modelMatrix";
+}

app/src/main/java/com/bartlomiejpluta/samplegame/core/world/object/Object.java

@@ -1,15 +1,14 @@
 package com.bartlomiejpluta.samplegame.core.world.object;
 
-import com.bartlomiejpluta.samplegame.core.gl.object.mesh.Mesh;
-import com.bartlomiejpluta.samplegame.core.gl.render.Renderable;
 import lombok.Getter;
-import lombok.RequiredArgsConstructor;
 import lombok.Setter;
+import org.joml.Matrix4f;
 import org.joml.Vector3f;
 
-@RequiredArgsConstructor
+import static java.lang.Math.toRadians;
-public abstract class Object implements Renderable {
+
-   private final Mesh mesh;
+public abstract class Object {
+   private final Matrix4f modelMatrix = new Matrix4f();
 
    @Getter
    private final Vector3f position = new Vector3f(0, 0, 0);
@@ -35,6 +34,20 @@ public abstract class Object implements Renderable {
       return this;
    }
    
+   public Object movePosition(float x, float y, float z) {
+      position.x += x;
+      position.y += y;
+      position.z += z;
+      return this;
+   }
+
+   public Object movePosition(Vector3f position) {
+      this.position.x += position.x;
+      this.position.y += position.y;
+      this.position.z += position.z;
+      return this;
+   }
+
    public Object setRotation(float x, float y, float z) {
       rotation.x = x;
       rotation.y = y;
@@ -49,13 +62,27 @@ public abstract class Object implements Renderable {
       return this;
    }
 
-   @Override
+   public Object moveRotation(float x, float y, float z) {
-   public void render() {
+      rotation.x += x;
-      mesh.render();
+      rotation.y += y;
+      rotation.z += z;
+      return this;
    }
 
-   @Override
+   public Object moveRotation(Vector3f rotation) {
-   public void cleanUp() {
+      this.rotation.x += rotation.x;
-      mesh.cleanUp();
+      this.rotation.y += rotation.y;
+      this.rotation.z += rotation.z;
+      return this;
+   }
+   
+   public Matrix4f getModelMatrix() {
+      return modelMatrix
+              .identity()
+              .translate(position)
+              .rotateX((float) toRadians(-rotation.x))
+              .rotateY((float) toRadians(-rotation.y))
+              .rotateZ((float) toRadians(-rotation.z))
+              .scale(scale);
    }
 }

app/src/main/java/com/bartlomiejpluta/samplegame/core/world/object/RenderableObject.java

@@ -0,0 +1,21 @@
+package com.bartlomiejpluta.samplegame.core.world.object;
+
+import com.bartlomiejpluta.samplegame.core.gl.object.mesh.Mesh;
+import com.bartlomiejpluta.samplegame.core.gl.render.Renderable;
+import com.bartlomiejpluta.samplegame.core.gl.shader.manager.ShaderManager;
+import lombok.RequiredArgsConstructor;
+
+@RequiredArgsConstructor
+public abstract class RenderableObject extends Object implements Renderable {
+   private final Mesh mesh;
+
+   @Override
+   public void render(ShaderManager shaderManager) {
+      mesh.render(shaderManager);
+   }
+
+   @Override
+   public void cleanUp() {
+      mesh.cleanUp();
+   }
+}

app/src/main/java/com/bartlomiejpluta/samplegame/core/world/object/Sprite.java

@@ -2,7 +2,7 @@ package com.bartlomiejpluta.samplegame.core.world.object;
 
 import com.bartlomiejpluta.samplegame.core.gl.object.mesh.Mesh;
 
-public class Sprite extends Object {
+public class Sprite extends RenderableObject {
    private static final float[] VERTICES = new float[]{
            -0.5f,  0.5f, 0.0f,
            -0.5f, -0.5f, 0.0f,

app/src/main/java/com/bartlomiejpluta/samplegame/core/world/scene/Scene.java

@@ -1,27 +1,31 @@
 package com.bartlomiejpluta.samplegame.core.world.scene;
 
 import com.bartlomiejpluta.samplegame.core.gl.render.Renderable;
+import com.bartlomiejpluta.samplegame.core.gl.shader.constant.UniformName;
+import com.bartlomiejpluta.samplegame.core.gl.shader.manager.ShaderManager;
+import com.bartlomiejpluta.samplegame.core.world.object.RenderableObject;
 
 import java.util.ArrayList;
 import java.util.List;
 
 public class Scene implements Renderable {
-   private final List<Renderable> renderables = new ArrayList<>();
+   private final List<RenderableObject> objects = new ArrayList<>();
 
-   public Scene add(Renderable renderable) {
+   public Scene add(RenderableObject object) {
-      renderables.add(renderable);
+      objects.add(object);
       return this;
    }
 
    @Override
-   public void render() {
+   public void render(ShaderManager shaderManager) {
-      for(var renderable : renderables) {
+      for(var object : objects) {
-         renderable.render();
+         shaderManager.setUniform(UniformName.UNI_MODEL_MATRIX, object.getModelMatrix());
+         object.render(shaderManager);
       }
    }
 
    @Override
    public void cleanUp() {
-      renderables.forEach(Renderable::cleanUp);
+      objects.forEach(Renderable::cleanUp);
    }
 }

app/src/main/java/com/bartlomiejpluta/samplegame/game/logic/DefaultGameLogic.java

@@ -7,6 +7,7 @@ import com.bartlomiejpluta.samplegame.core.world.object.Sprite;
 import com.bartlomiejpluta.samplegame.core.world.scene.Scene;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
+import org.joml.Vector3f;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 
@@ -17,12 +18,15 @@ public class DefaultGameLogic implements GameLogic {
    private final Renderer renderer;
    private final Scene scene = new Scene();
 
+   Sprite sprite;
+
    @Override
    public void init(Window window) {
       log.info("Initializing game logic");
       renderer.init();
 
-      scene.add(new Sprite());
+      sprite = new Sprite();
+      scene.add(sprite);
    }
 
    @Override

app/src/main/resources/shaders/default.vs

@@ -1,8 +1,10 @@
 #version 330
 
+uniform mat4 modelMatrix;
+
 layout(location=0) in vec3 position;
 
 void main()
 {
-   gl_Position = vec4(position, 1.0);
+   gl_Position = modelMatrix * vec4(position, 1.0);
 }