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https://github.com/open-goal/jak-project
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Hat Kid
119 lines
3.2 KiB
Common Lisp
119 lines
3.2 KiB
Common Lisp
;;-*-Lisp-*-
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(in-package goal)
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;; name: smush-control-h.gc
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;; name in dgo: smush-control-h
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;; dgos: ENGINE, GAME
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;; DECOMP BEGINS
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(deftype smush-control (structure)
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"This holds information about the current state of an object's smush."
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((start-time time-frame)
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(period float)
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(duration float)
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(amp float)
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(damp-amp float)
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(damp-period float)
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(ticks float)
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)
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:pack-me
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(:methods
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(set-zero! (_type_) _type_)
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(update! (_type_) float)
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(get-no-update (_type_) float)
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(activate! (_type_ float int int float float clock) _type_)
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(nonzero-amplitude? (_type_) symbol)
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(die-on-next-update! (_type_) _type_)
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)
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)
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(defmethod nonzero-amplitude? ((this smush-control))
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(!= (-> this amp) 0.0)
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)
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(defmethod set-zero! ((this smush-control))
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(set! (-> this period) 0.0)
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(set! (-> this duration) 0.0)
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(set! (-> this amp) 0.0)
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(set! (-> this damp-amp) 0.0)
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(set! (-> this damp-period) 0.0)
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(set! (-> this ticks) 0.0)
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this
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)
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(defmethod update! ((this smush-control))
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(cond
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((!= (-> this amp) 0.0)
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(let* ((elapsed-time (the float (- (current-time) (-> this start-time))))
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(period (-> this period))
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(f28-0 (- elapsed-time (* (the float (the int (/ elapsed-time period))) period)))
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)
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(when (>= (- elapsed-time (-> this ticks)) (-> this period))
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(set! (-> this amp) (* (-> this amp) (-> this damp-amp)))
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(set! (-> this period) (* (-> this period) (-> this damp-period)))
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(set! (-> this ticks) elapsed-time)
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(if (< (-> this damp-period) 0.0)
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(set-zero! this)
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)
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)
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(if (>= elapsed-time (-> this duration))
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(set-zero! this)
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)
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(* (sin (/ (* 65536.0 f28-0) (-> this period)))
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(* (-> this amp) (/ (- (-> this duration) elapsed-time) (-> this duration)))
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)
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)
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)
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(else
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0.0
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)
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)
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)
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(defmethod get-no-update ((this smush-control))
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(cond
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((!= (-> this amp) 0.0)
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(let* ((elapsed-time (the float (- (current-time) (-> this start-time))))
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(period (-> this period))
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(f0-4 (- elapsed-time (* (the float (the int (/ elapsed-time period))) period)))
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)
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(* (sin (/ (* 65536.0 f0-4) (-> this period)))
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(* (-> this amp) (/ (- (-> this duration) elapsed-time) (-> this duration)))
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)
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)
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)
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(else
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0.0
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)
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)
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)
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(defmethod die-on-next-update! ((this smush-control))
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(if (!= (-> this amp) 0.0)
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(set! (-> this damp-period) -1.0)
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)
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this
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)
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(defmethod activate! ((this smush-control)
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(amplitude float)
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(period int)
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(duration int)
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(damp-amplitude float)
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(damp-period float)
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(clock clock)
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)
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(when (>= (fabs (/ (-> this amp) 5)) (fabs (get-no-update this)))
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(set! (-> this amp) amplitude)
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(set! (-> this period) (the float period))
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(set! (-> this duration) (the float duration))
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(set! (-> this damp-amp) damp-amplitude)
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(set! (-> this damp-period) damp-period)
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(set! (-> this ticks) 0.0)
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(set! (-> this start-time) (-> clock frame-counter))
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)
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this
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)
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