~octaspire/crates2

ref: e5297da8d19288570ff875f5c75329ba577ecddf crates2/src/stepper.lisp -rw-r--r-- 1.1 KiB
e5297da8octaspire Add stepper and toggle crates, start to add level 6 months ago
                                                                                
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;; Octaspire Crates 2 - Puzzle Game
;; Copyright 2020, 2021 octaspire.com
;;
;; 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.
(in-package :crates2)

;; Methods

(defmethod update ((self stepper))
  (let ((crate (find-at-of-type (crate-x self) (crate-y self) 0 'moving)))
    (case (crate-state self)
        (:idle
         (when crate
           (setf (crate-state self) :active)
           (setf (velocity crate) :zero)))
        (:active
         (unless crate
           (setf (crate-state self) :idle)))))
  (call-next-method))

(defmethod visual ((self stepper))
  (if (eq (crate-state self) :active)
      (list "stepper-active")
      (list "stepper-idle")))