Added kinematic option to Rigidbody

* Added kinematic option to Rigidbody (no physical forces affects the
object)

ProjectHistory

@@ -247,6 +247,8 @@ v0.1 - 24/08/2018
 * Added sphere collision detection!!!
 * Added Plane mesh to the resources folder
 * Refactored and fixed bugs
+16/11/2018
+* Added kinematic option to Rigidbody (no physical forces affects the object)
 
 
 

src/main/java/com/johnsproject/jpge/dto/Rigidbody.java

@@ -16,7 +16,8 @@ public class Rigidbody {
 	private int collisionTime = (int)System.currentTimeMillis();
 	private int collisionType = COLLISION_SPHERE;
 	private int radius = -1;
-	private boolean useGravity = true;
+	private boolean gravity = true;
+	private boolean kinematic = false;
 	private String[] collisionTargets = new String[5];
 
 	public Rigidbody() {
@@ -70,6 +71,11 @@ public void collisionEnter(String objectName) {
 			if (collisionTargets[i].equals(objectName))
 				break;
 			if (collisionTargets[i].equals("")) {
+				if (!isKinematic()) {
+					velocity[vx] = 0;
+					velocity[vy] = 0;
+					velocity[vz] = 0;
+				}
 				collisionTargets[i] = objectName;
 				break;
 			}
@@ -117,12 +123,12 @@ public String[] getCollisionTargets() {
 	}
 
 	public boolean useGravity() {
-		return useGravity;
+		return gravity;
 	}
 
 	public void useGravity(boolean useGravity) {
 		collisionTime = (int)System.currentTimeMillis();
-		this.useGravity = useGravity;
+		this.gravity = useGravity;
 	}
 
 	public int getCollisionType() {
@@ -140,4 +146,12 @@ public int getColliderRadius() {
 	public void setColliderRadius(int radius) {
 		this.radius = radius;
 	}
+
+	public boolean isKinematic() {
+		return kinematic;
+	}
+
+	public void setKinematic(boolean kinematic) {
+		this.kinematic = kinematic;
+	}
 }

src/main/java/com/johnsproject/jpge/physics/PhysicsAnimator.java

@@ -20,7 +20,7 @@ public void animate(Scene scene) {
 				rigidbody.setColliderRadius(getRadius(sceneObject));
 			PhysicsSettings settings = scene.getPhysicsSettings();
 			detectCollision(scene, sceneObject);
-			if (!rigidbody.isColliding()) {
+			if (!rigidbody.isColliding() && !rigidbody.isKinematic()) {
 				applyGravity(rigidbody, settings.getGravity());
 			}
 			transform.translate(rigidbody.getVelocity());

src/test/java/com/johnsproject/jpge/ExampleScene.java

@@ -6,7 +6,6 @@
 import com.johnsproject.jpge.dto.Camera;
 import com.johnsproject.jpge.dto.Light;
 import com.johnsproject.jpge.dto.Mesh;
-import com.johnsproject.jpge.dto.Rigidbody;
 import com.johnsproject.jpge.dto.SceneObject;
 import com.johnsproject.jpge.dto.Texture;
 import com.johnsproject.jpge.dto.Transform;
@@ -37,7 +36,7 @@ public ExampleScene() {
 		sceneObject2 = new SceneObject("test2", new Transform(new int[] {0, -3000, 0}, new int[] {90, 0, 0}, new int[] {1, 1, 1}), mesh2);
 //		sceneObject.getRigidbody().setCollisionType(Rigidbody.COLLISION_AABB);
 //		sceneObject2.getRigidbody().setCollisionType(Rigidbody.COLLISION_AABB);
-		sceneObject.getRigidbody().setCollisionType(Rigidbody.COLLISION_TERRAIN);
+//		sceneObject.getRigidbody().setCollisionType(Rigidbody.COLLISION_TERRAIN);
 		try {
 			Texture t = new Texture(getClass().getResourceAsStream("/JohnsProject.png"));
 			for (int i = 0; i < mesh1.getMaterials().length; i++) {