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;; Load dependencies first
(import scheme
(chicken base)
(chicken format)
(only srfi-1 any filter fold alist-delete)
(only srfi-13 string-join string-contains)
(only srfi-197 chain)
(prefix sdl2 sdl2:)
simple-logger
srfi-64
defstruct)
;; Load entity first (input imports it)
(include "entity.scm")
(import downstroke-entity)
;; Load the module source directly
(include "input.scm")
;; Now import it to access the exported functions
(import downstroke-input)
;; Test suite for input module
(test-begin "input-module")
;; Test: create-input-state initializes correctly
(test-group "create-input-state"
(let ((state (create-input-state *default-input-config*)))
(test-assert "returns an input-state record" (input-state? state))
(test-assert "has current field" (list? (input-state-current state)))
(test-assert "has previous field" (list? (input-state-previous state)))
;; All actions should be initialized to #f
(test-equal "up action is false" #f (input-held? state 'up))
(test-equal "down action is false" #f (input-held? state 'down))
(test-equal "left action is false" #f (input-held? state 'left))
(test-equal "right action is false" #f (input-held? state 'right))
(test-equal "a action is false" #f (input-held? state 'a))
(test-equal "b action is false" #f (input-held? state 'b))
(test-equal "start action is false" #f (input-held? state 'start))
(test-equal "quit action is false" #f (input-held? state 'quit))))
;; Test: input-held? query
(test-group "input-held?"
(let ((state (create-input-state *default-input-config*)))
(test-equal "returns false for unheld action" #f (input-held? state 'up))
(test-equal "returns false for unknown action" #f (input-held? state 'unknown))))
;; Test: input-pressed? detection
(test-group "input-pressed?"
(let* ((state1 (create-input-state *default-input-config*))
;; Simulate state transition: nothing -> up pressed
(state2 (make-input-state
(cons (cons 'up #t) (input-state-current state1))
(input-state-current state1))))
;; In state1, up is not pressed
(test-equal "not pressed in initial state" #f (input-pressed? state1 'up))
;; In state2, up is held but was not held before -> pressed
(test-assert "pressed when current=#t and previous=#f"
(input-pressed? state2 'up))))
;; Test: input-released? detection
(test-group "input-released?"
(let* ((state1 (create-input-state *default-input-config*))
;; State with up held
(state-held (make-input-state
(cons (cons 'up #t) (input-state-current state1))
(input-state-current state1)))
;; State with up released (current=#f, previous=#t)
(state-released (make-input-state
(cons (cons 'up #f) (input-state-current state1))
(cons (cons 'up #t) (input-state-current state1)))))
(test-equal "not released when held" #f (input-released? state-held 'up))
(test-assert "released when current=#f and previous=#t"
(input-released? state-released 'up))))
;; Test: input-any-pressed?
(test-group "input-any-pressed?"
(let ((state1 (create-input-state *default-input-config*)))
(test-equal "no actions pressed in initial state"
#f
(input-any-pressed? state1 *default-input-config*))))
;; Test: input-state->string formatting
(test-group "input-state->string"
(let* ((state (create-input-state *default-input-config*))
(str (input-state->string state *default-input-config*)))
(test-assert "returns a string" (string? str))
(test-assert "contains [Input:" (string-contains str "[Input:"))
(test-assert "empty state shows no actions"
(or (string-contains str "[]")
(string-contains str "[Input: ]")))))
;; Test: state transitions
(test-group "state-transitions"
(let* ((state1 (create-input-state *default-input-config*))
;; Manually create state2 where 'up' is pressed
(state2 (make-input-state
(cons (cons 'up #t)
(filter (lambda (p) (not (eq? (car p) 'up)))
(input-state-current state1)))
(input-state-current state1))))
;; Verify transition from not-held to held = pressed
(test-equal "up not held in state1" #f (input-held? state1 'up))
(test-assert "up held in state2" (input-held? state2 'up))
(test-assert "up pressed in state2" (input-pressed? state2 'up))
;; Now create state3 where up is still held (not pressed anymore)
(let ((state3 (make-input-state
(input-state-current state2)
(input-state-current state2))))
(test-assert "up still held in state3" (input-held? state3 'up))
(test-equal "up not pressed in state3 (already was pressed)"
#f
(input-pressed? state3 'up)))))
;; Test: apply-input-to-entity applies input to entity
(test-group "apply-input-to-entity"
(test-group "no input-map: entity unchanged"
(let* ((e '(#:type player #:x 5 #:y 10))
(out (apply-input-to-entity e (lambda (a) #f))))
(test-equal "entity returned as-is" e out)))
(test-group "no actions held: velocity is zero"
(let* ((e (make-entity 0 0 16 16))
(out (apply-input-to-entity e (lambda (a) #f))))
(test-equal "vx is 0" 0 (entity-ref out #:vx))
(test-equal "vy is 0" 0 (entity-ref out #:vy))))
(test-group "right held: vx=2 vy=0"
(let* ((e (make-entity 0 0 16 16))
(out (apply-input-to-entity e (lambda (a) (eq? a 'right)))))
(test-equal "vx is 2" 2 (entity-ref out #:vx))
(test-equal "vy is 0" 0 (entity-ref out #:vy))))
(test-group "right+down held: vx=2 vy unchanged"
(let* ((e (make-entity 0 0 16 16))
(out (apply-input-to-entity e (lambda (a) (memv a '(right down))))))
(test-equal "vx is 2" 2 (entity-ref out #:vx))
(test-equal "vy is unchanged (input handler does not set vy)" 0 (entity-ref out #:vy))))
(test-group "right held: facing set to 1"
(let* ((e (make-entity 0 0 16 16))
(out (apply-input-to-entity e (lambda (a) (eq? a 'right)))))
(test-equal "facing is 1" 1 (entity-ref out #:facing 0))))
(test-group "left held: facing set to -1"
(let* ((e (make-entity 0 0 16 16))
(out (apply-input-to-entity e (lambda (a) (eq? a 'left)))))
(test-equal "facing is -1" -1 (entity-ref out #:facing 0))))
(test-group "no key held: facing retains previous value"
(let* ((e (entity-set (make-entity 0 0 16 16) #:facing 1))
(out (apply-input-to-entity e (lambda (a) #f))))
(test-equal "facing stays 1 when vx=0" 1 (entity-ref out #:facing 0)))))
(test-group "custom-input-config"
(let* ((cfg (make-input-config
actions: '(jump shoot)
keyboard-map: '((space . jump) (f . shoot))
joy-button-map: '()
controller-button-map: '()
joy-axis-bindings: '()
controller-axis-bindings: '()
deadzone: 8000))
(state (create-input-state cfg)))
(test-assert "custom config creates valid state" (input-state? state))
(test-equal "jump is false" #f (input-held? state 'jump))
(test-equal "shoot is false" #f (input-held? state 'shoot))))
(test-end "input-module")
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