65 lines
2.2 KiB
Scheme
65 lines
2.2 KiB
Scheme
;; Game state and logic for the hero entity
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(define-module (game model hero)
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#:use-module (srfi srfi-9)
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#:use-module (srfi srfi-9 gnu)
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#:use-module (srfi srfi-64)
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#:use-module (chickadee math vector)
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#:use-module (game model level)
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#:export (hero-load
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hero-state hero-with-state
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hero-bloat hero-with-bloat
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hero-position hero-with-position
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hero-x hero-with-x
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hero-y hero-with-y
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))
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(define-immutable-record-type <hero>
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(%make-hero position state bloat)
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hero?
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(position hero-position hero-with-position)
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(state hero-state hero-with-state) ;; 'go-left 'go-right 'climb 'fall 'stationary
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(bloat hero-bloat hero-with-bloat) ;; 0.0 to 2.0, how much the hero is inflated
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)
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(define default-state 'stationary)
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(define default-bloat 1.0)
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(define (hero-load level)
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(let ((initial-position (level-find-hero level)))
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(%make-hero initial-position default-state default-bloat)))
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(define (hero-x hero)
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(inexact->exact (floor (vec2-x (hero-position hero)))))
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(define (hero-y hero)
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(inexact->exact (floor (vec2-y (hero-position hero)))))
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(define (hero-with-x hero x)
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(hero-with-position hero (vec2 x (hero-y hero))))
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(define (hero-with-y hero y)
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(hero-with-position hero (vec2 (hero-x hero) y)))
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;; Tests
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[test-begin "hero model"]
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(let* ((level (level-parse "WWWWW\nW...W\nW.P.W\nW...W\nWWWWW\n"))
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(hero (hero-load level))
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(default-position (level-find-hero level)))
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(test-assert (hero? hero))
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(test-equal default-position (hero-position hero))
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(test-equal default-state (hero-state hero))
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(test-equal default-bloat (hero-bloat hero))
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(test-equal (vec2 10 20) (hero-position (hero-with-position hero (vec2 10 20))))
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(test-equal default-position (hero-position hero))
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(test-equal 'go-left (hero-state (hero-with-state hero 'go-left)))
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(test-equal default-state (hero-state hero))
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(test-equal 1.5 (hero-bloat (hero-with-bloat hero 1.5)))
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(test-equal default-bloat (hero-bloat hero))
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(test-equal 16 (hero-x (hero-with-position hero (vec2 16.34 20.78))))
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(test-equal 20 (hero-y (hero-with-position hero (vec2 16.34 20.78))))
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)
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(test-end "hero model")
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