public void transform(Matrix4f mat, boolean updateLocal) {
activate();
Transform t = new Transform();
t.set(mat);
Vector3f v = new Vector3f();
for (int i = 0; i < 3; ++i) {
t.basis.getColumn(i, v);
v.normalize();
t.basis.setColumn(i, v);
}
body.setWorldTransform(t);
// required for static objects:
body.getMotionState().setWorldTransform(t);
if (body.isInWorld() && body.isStaticOrKinematicObject()) {
scene.world.updateSingleAabb(body);
for (GameObject g : touchingObjects) g.activate();
}
//
updateChildTransforms();
if (parent != null && updateLocal) {
updateLocalTransform();
}
}
public void scale(float x, float y, float z, boolean updateLocal) {
activate();
// Set unit scale
Matrix4 t = modelInstance.transform;
Matrix4 mat_scale = new Matrix4();
Vector3 s = new Vector3();
t.getScale(s);
mat_scale.scl(1 / s.x, 1 / s.y, 1 / s.z);
t.mul(mat_scale);
// Set target scale
mat_scale.idt();
mat_scale.scl(x, y, z);
t.mul(mat_scale);
// Relevant bullet body update
CollisionShape cs = body.getCollisionShape();
cs.setLocalScaling(new Vector3f(x, y, z));
if (body.isInWorld() && body.isStaticOrKinematicObject()) scene.world.updateSingleAabb(body);
// Child propagation
Vector3f ps = scale();
Matrix4f pt = transform();
Matrix4f ct = new Matrix4f();
Matrix4f ms = new Matrix4f();
ms.setIdentity();
ms.m00 = ps.x;
ms.m11 = ps.y;
ms.m22 = ps.z;
pt.mul(ms);
for (GameObject c : children) {
c.scale(scale().mul(c.localScale), false);
ct.mul(pt, c.localTransform);
c.transform(ct, false);
}
if (parent != null && updateLocal) {
updateLocalScale();
}
}
public void bodyType(String s) {
int flags = body.getCollisionFlags();
if (body.isInWorld()) scene.world.removeRigidBody(body);
if (s.equals("NO_COLLISION")) {
for (GameObject g : touchingObjects) g.activate();
flags &= ~CollisionFlags.KINEMATIC_OBJECT;
} else {
if (s.equals("STATIC")) {
flags |= CollisionFlags.KINEMATIC_OBJECT;
} else if (s.equals("SENSOR")) {
flags |= CollisionFlags.KINEMATIC_OBJECT;
flags |= CollisionFlags.NO_CONTACT_RESPONSE;
} else {
// NO_COLLISION -> DYNAMIC or RIGID_BODY hack
if (currBodyType.equals("NO_COLLISION")) {
body.clearForces();
body.setLinearVelocity(new Vector3f());
}
// kinematic initialization hack
if (mass() == Float.POSITIVE_INFINITY) {
mass(1); // Blender default
flags &= ~CollisionFlags.KINEMATIC_OBJECT;
body.setCollisionFlags(flags);
}
flags &= ~CollisionFlags.KINEMATIC_OBJECT;
if (s.equals("DYNAMIC")) {
body.setAngularVelocity(new Vector3f());
body.setAngularFactor(0);
} else if (s.equals("RIGID_BODY")) {
body.setAngularFactor(1);
} else {
throw new RuntimeException(s + " is no valid bodyType name.");
}
}
scene.world.addRigidBody(body);
activate();
}
body.setCollisionFlags(flags);
currBodyType = s;
}
public boolean dynamics() {
return body.isInWorld() && !body.isKinematicObject();
}
public void replaceModel(String modelName, boolean updateVisual, boolean updatePhysics) {
if (modelName.equals(modelInstance.model.meshParts.get(0).id)) return;
Model model = null;
JsonValue mOrigin = null;
JsonValue mDimNoScale = null;
for (Scene sce : Bdx.scenes) {
if (sce.models.containsKey(modelName)) {
model = sce.models.get(modelName);
mOrigin = sce.json.get("origins").get(modelName);
mDimNoScale = sce.json.get("dimensions").get(modelName);
break;
}
}
if (model == null) {
throw new RuntimeException("No model found with name: '" + modelName + "'");
}
origin = mOrigin == null ? new Vector3f() : new Vector3f(mOrigin.asFloatArray());
dimensionsNoScale =
mDimNoScale == null ? new Vector3f(1, 1, 1) : new Vector3f(mDimNoScale.asFloatArray());
Matrix4 trans = modelInstance.transform;
if (updateVisual) {
ModelInstance mi = new ModelInstance(model);
mi.transform.set(trans);
modelInstance = mi;
}
if (updatePhysics) {
GameObject compParent =
parent != null && parent.body.getCollisionShape().isCompound() ? parent : null;
boolean isCompChild =
compParent != null
&& !(currBodyType.equals("NO_COLLISION") || currBodyType.equals("SENSOR"));
if (isCompChild) {
parent(null);
}
Matrix4f transform = transform();
Vector3f scale = scale();
String boundsType = json.get("physics").get("bounds_type").asString();
float margin = json.get("physics").get("margin").asFloat();
boolean compound = json.get("physics").get("compound").asBoolean();
body.setCollisionShape(Bullet.makeShape(model.meshes.first(), boundsType, margin, compound));
if (boundsType.equals("CONVEX_HULL")) {
Transform startTransform = new Transform();
body.getMotionState().getWorldTransform(startTransform);
Matrix4f originMatrix = new Matrix4f();
originMatrix.set(origin);
Transform centerOfMassTransform = new Transform();
centerOfMassTransform.set(originMatrix);
centerOfMassTransform.mul(startTransform);
body.setCenterOfMassTransform(centerOfMassTransform);
}
transform(transform);
scale(scale);
if (body.isInWorld()) {
scene.world.updateSingleAabb(body);
} else { // update Aabb hack for when not in world
scene.world.addRigidBody(body);
scene.world.updateSingleAabb(body);
scene.world.removeRigidBody(body);
}
if (isCompChild) {
parent(compParent);
}
}
}
