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This file is part of Logtalk <https://logtalk.org/>  
Copyright 1998-2022 Paulo Moura <pmoura@logtalk.org>  
SPDX-License-Identifier: Apache-2.0

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
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% start by loading the "assign_parameters" category and the example:

| ?- logtalk_load(assign_parameters(loader)).
...


% rectangle example (don't use message broadcasting syntax in order to workaround a XSB parser bug):

| ?- rectangle(2, 3, S)::init, rectangle(2, 3, S)::position(X0, Y0), rectangle(2, 3, S)::move(3, 7), rectangle(2, 3, S)::position(X1, Y1), rectangle(2, 3, S)::move(2, 5), rectangle(2, 3, S)::position(X2, Y2).

X0 = 0
Y0 = 0
X1 = 3
Y1 = 7
X2 = 2
Y2 = 5 

Yes


% finite state machine example:

| ?- {fsm(T, I, F)}::recognise([0,1,1,2,1,2,0]).

red-0-red
red-1-green
green-1-yellow
yellow-2-red
red-1-green
green-2-red
red-0-red

T = [red-0-red, red-1-green, red-2-red, yellow-0-red, yellow-1-green, yellow-2-red, green-0-yellow, ... -... -yellow, ... -...]
I = red
F = [red] 

Yes


% finite state machine example:

| ?- {fsm(T, I, F)}::recognise([0,1,1,2,1,2,1,0]).

red-0-red
red-1-green
green-1-yellow
yellow-2-red
red-1-green
green-2-red
red-1-green
green-0-yellow
backtracking...
backtracking...
backtracking...
backtracking...
backtracking...
backtracking...
backtracking...
backtracking...

No
