Command *Command::opItemLookDirection(Script *script, const ResourceReference &itemRef, int32 direction, bool suspend) {
FloorPositionedItem *item = itemRef.resolve<FloorPositionedItem>();
Current *current = StarkGlobal->getCurrent();
Camera *camera = current->getCamera();
Math::Angle cameraAngle = camera->getHorizontalAngle();
Math::Angle targetAngle = direction + cameraAngle;
Math::Matrix3 rot;
rot.buildAroundZ(-targetAngle);
Math::Vector3d directionVector(1.0, 0.0, 0.0);
rot.transformVector(&directionVector);
Turn *movement = new Turn(item);
movement->setTargetDirection(directionVector);
movement->start();
item->setMovement(movement);
if (suspend) {
script->suspend(item);
item->setMovementSuspendedScript(script);
return this; // Stay on the same command while suspended
} else {
return nextCommand();
}
}
/* RotateVector takes a vector and rotates it around
* the point (0,0,0) by the requested number of degrees.
* This function is used to calculate the locations for
* getting on and off of the Bone Wagon and for going up
* and down the slide with the chain at the end of the world.
*/
void Lua_V1::RotateVector() {
lua_Object vecObj = lua_getparam(1);
lua_Object rotObj = lua_getparam(2);
if (!lua_istable(vecObj) || !lua_istable(rotObj)) {
lua_pushnil();
return;
}
lua_pushobject(vecObj);
lua_pushstring("x");
float x = lua_getnumber(lua_gettable());
lua_pushobject(vecObj);
lua_pushstring("y");
float y = lua_getnumber(lua_gettable());
lua_pushobject(vecObj);
lua_pushstring("z");
float z = lua_getnumber(lua_gettable());
Math::Vector3d vec(x, y, z);
lua_pushobject(rotObj);
lua_pushstring("x");
Math::Angle pitch = lua_getnumber(lua_gettable());
lua_pushobject(rotObj);
lua_pushstring("y");
Math::Angle yaw = lua_getnumber(lua_gettable());
lua_pushobject(rotObj);
lua_pushstring("z");
Math::Angle roll = lua_getnumber(lua_gettable());
Math::Matrix3 mat;
mat.buildFromPitchYawRoll(pitch, yaw, roll);
mat.transformVector(&vec);
lua_Object resObj = lua_createtable();
lua_pushobject(resObj);
lua_pushstring("x");
lua_pushnumber(vec.x());
lua_settable();
lua_pushobject(resObj);
lua_pushstring("y");
lua_pushnumber(vec.y());
lua_settable();
lua_pushobject(resObj);
lua_pushstring("z");
lua_pushnumber(vec.z());
lua_settable();
lua_pushobject(resObj);
}
void Walk::onGameLoop() {
if (!_path->hasSteps()) {
// There is no path to the destination
stop();
return;
}
Resources::Floor *floor = StarkGlobal->getCurrent()->getFloor();
// Get the target to walk to
Math::Vector3d currentPosition = _item3D->getPosition3D();
Math::Vector3d target = _path->computeWalkTarget(currentPosition);
// Compute the direction to walk into
Math::Vector3d direction = target - currentPosition;
direction.z() = 0;
direction.normalize();
// Compute the angle with the current character direction
Math::Vector3d currentDirection = _item3D->getDirectionVector();
float directionDeltaAngle = computeAngleBetweenVectorsXYPlane(currentDirection, direction);
// If the angle between the current direction and the new one is too high,
// make the character turn on itself until the angle is low enough
if (ABS(directionDeltaAngle) > getAngularSpeed() + 0.1f) {
_turnDirection = directionDeltaAngle < 0 ? kTurnLeft : kTurnRight;
} else {
_turnDirection = kTurnNone;
}
float distancePerGameloop = computeDistancePerGameLoop();
Math::Vector3d newPosition;
if (_turnDirection == kTurnNone) {
// Compute the new position using the distance per gameloop
if (currentPosition.getDistanceTo(target) > distancePerGameloop) {
newPosition = currentPosition + direction * distancePerGameloop;
} else {
newPosition = target;
}
} else {
// The character does not change position when it is turning
newPosition = currentPosition;
direction = currentDirection;
Math::Matrix3 rot;
rot.buildAroundZ(_turnDirection == kTurnLeft ? -getAngularSpeed() : getAngularSpeed());
rot.transformVector(&direction);
}
// Some scripts expect the character position to be the exact destination
if (newPosition == _destination) {
_reachedDestination = true;
stop();
}
// Update the new position's height according to the floor
int32 newFloorFaceIndex = floor->findFaceContainingPoint(newPosition);
if (newFloorFaceIndex >= 0) {
floor->computePointHeightInFace(newPosition, newFloorFaceIndex);
} else {
warning("Item %s is walking off the floor", _item->getName().c_str());
}
// Update the item's properties
_item3D->setPosition3D(newPosition);
if (direction.getMagnitude() != 0.0) {
_item3D->setDirection(computeAngleBetweenVectorsXYPlane(direction, Math::Vector3d(1.0, 0.0, 0.0)));
}
if (newFloorFaceIndex >= 0) {
// When unable to find the face containing the new position, keep the previous one
// to prevent draw order glitches.
_item3D->setFloorFaceIndex(newFloorFaceIndex);
}
changeItemAnim();
}