+#!/usr/bin/guile \
+-e gacela-script -s
+!#
+
+(use-modules (gacela gacela)
+ (gacela math))
+(init-gacela)
+
(set-game-properties! #:title "Gacela Asteroids")
(define max-x (/ (assoc-ref (get-game-properties) 'width) 2))
(define max-y (/ (assoc-ref (get-game-properties) 'height) 2))
(define min-y (- max-y))
-(define draw-asteroid
- (let ((asteroid (load-texture "Asteroid.png")))
- (lambda (a)
- (to-origin)
- (translate (assoc-ref a 'x) (assoc-ref a 'y))
- (rotate (assoc-ref a 'angle))
- (draw-texture asteroid))))
-
-(define (move-asteroid a)
- (let* ((x (assoc-ref a 'x)) (y (assoc-ref a 'y))
- (angle (assoc-ref a 'angle))
- (vx (assoc-ref a 'vx)) (vy (assoc-ref a 'vy)))
- (set! x (+ x vx))
- (set! y (+ y vy))
- (cond ((> x max-x) (set! vx -1))
- ((< x min-x) (set! vx 1)))
- (cond ((> y max-y) (set! vy -1))
- ((< y min-y) (set! vy 1)))
-
- (assoc-multiple-set! a 'x x 'y y 'angle (+ angle 1) 'vx vx 'vy vy)))
-
-(define draw-ship
- (let ((ship1 (load-texture "Ship1.png"))
- (ship2 (load-texture "Ship2.png")))
- (lambda (s)
- (to-origin)
- (translate (assoc-ref s 'x) (assoc-ref s 'y))
- (rotate (assoc-ref s 'angle))
- (let ((ship (if (assoc-ref s 'moving) ship2 ship1)))
- (draw-texture ship)))))
-
-(define (move-ship s)
- (let ((x (assoc-ref s 'x)) (y (assoc-ref s 'y))
- (angle (assoc-ref s 'angle))
- (moving (assoc-ref s 'moving)))
- (cond ((key? 'left) (set! angle (+ angle 5)))
- ((key? 'right) (set! angle (- angle 5))))
- (cond ((key? 'up)
- (let ((r (degrees-to-radians (- angle))))
- (set! x (+ x (* 4 (sin r))))
- (set! y (+ y (* 4 (cos r)))))
- (cond ((> x max-x) (set! x min-x))
- ((< x min-x) (set! x max-x)))
- (cond ((> y max-y) (set! y min-y))
- ((< y min-y) (set! y max-y)))
- (set! moving #t))
- (else
- (set! moving #f)))
-
- (assoc-multiple-set! s 'x x 'y y 'angle angle 'moving moving)))
-
-(define (ship-shot s)
- (cond ((key-pressed? 'space)
- `((x . ,(assoc-ref s 'x)) (y . ,(assoc-ref s 'y)) (angle . ,(assoc-ref s 'angle))))
+
+;;; Asteroids
+
+(define-checking-mobs (asteroid-shots x y size) (shot (sx x) (sy y))
+ (if (< (distance-between-points (list sx sy) (list x y)) size) 1 0))
+
+(define (asteroid-killed? x y size)
+ (> (apply + (asteroid-shots x y size)) 0))
+
+(define-mob (asteroid
+ (image (load-texture "Asteroid.png"))
+ (x 0) (y 0) (angle 0) (dir 0) (size 100))
+ (cond ((asteroid-killed? x y size)
+ (kill-me))
(else
- #f)))
+ (let ((r (degrees-to-radians (- dir))))
+ (set! x (+ x (sin r)))
+ (set! y (+ y (cos r))))
+ (set! angle (+ angle 1))
+
+ (cond ((or (> x max-x) (< x min-x))
+ (set! dir (* -1 dir))))
+ (cond ((or (> y max-y) (< y min-y))
+ (set! dir (- 180 dir))))))
+
+ (translate x y)
+ (rotate angle)
+ (draw-texture image))
+
+
+;;; Ship
+
+(define-mob (ship
+ (ship1 (load-texture "Ship1.png"))
+ (ship2 (load-texture "Ship2.png"))
+ (x 0) (y 0) (angle 0)
+ (moving #f))
+ (cond ((key? 'left) (set! angle (+ angle 5)))
+ ((key? 'right) (set! angle (- angle 5))))
+ (cond ((key? 'up)
+ (let ((r (degrees-to-radians (- angle))))
+ (set! x (+ x (* 4 (sin r))))
+ (set! y (+ y (* 4 (cos r)))))
+ (cond ((> x max-x) (set! x min-x))
+ ((< x min-x) (set! x max-x)))
+ (cond ((> y max-y) (set! y min-y))
+ ((< y min-y) (set! y max-y)))
+ (set! moving #t))
+ (else
+ (set! moving #f)))
+ (cond ((key-pressed? 'space)
+ (show-mob (make-shot #:x x #:y y #:angle angle))))
-(define (draw-shot sh)
- (to-origin)
- (translate (assoc-ref sh 'x) (assoc-ref sh 'y))
- (rotate (assoc-ref sh 'angle))
- (draw-line 10))
+ (translate x y)
+ (rotate angle)
+ (draw-texture (if moving ship2 ship1)))
+
+
+;;; Shots
-(define (move-shots shots)
- (cond ((null? shots) '())
+(define-checking-mobs (impacted-shots x y) (asteroid (ax x) (ay y) (size size))
+ (if (< (distance-between-points (list ax ay) (list x y)) size) 1 0))
+
+(define (shot-killed? x y)
+ (> (apply + (impacted-shots x y)) 0))
+
+(define-mob (shot (x 0) (y 0) (angle 0))
+ (cond ((shot-killed? x y)
+ (kill-me))
(else
- (let* ((sh (car shots))
- (x (assoc-ref sh 'x)) (y (assoc-ref sh 'y))
- (angle (assoc-ref sh 'angle))
- (r (degrees-to-radians (- angle))))
+ (let ((r (degrees-to-radians (- angle))))
(set! x (+ x (* 10 (sin r))))
(set! y (+ y (* 10 (cos r))))
- (cond ((and (<= x max-x)
- (>= x min-x)
- (<= y max-y)
- (>= y min-y))
- (cons `((x . ,x) (y . ,y) (angle . ,angle))
- (move-shots (cdr shots))))
- (else
- (move-shots (cdr shots))))))))
-
-(define (make-asteroids n)
- (define (xy n r)
- (let ((n2 (- (random (* n 2)) n)))
- (cond ((and (< n2 r) (>= n2 0)) r)
- ((and (> n2 (- r)) (< n2 0)) (- r))
- (else n2))))
-
- (cond ((= n 0) '())
- (else
- (cons `((x . ,(xy max-x 20)) (y . ,(xy max-y 20)) (angle . 0) (vx . 1) (vy . 1) (size . 95))
- (make-asteroids (- n 1))))))
+ (cond ((or (> x max-x)
+ (< x min-x)
+ (> y max-y)
+ (< y min-y))
+ (kill-me))))))
+
+ (translate x y)
+ (rotate angle)
+ (draw-line 10))
-(define (killed-ship? s a)
- (cond ((null? a) #f)
- (else
- (or (< (distance-between-points (list (assoc-ref s 'x) (assoc-ref s 'y))
- (list (assoc-ref (car a) 'x) (assoc-ref (car a) 'y)))
- (assoc-ref (car a) 'size))
- (killed-ship? s (cdr a))))))
-
-(define (kill-asteroids s a)
- (define (f1 s1 a)
- (cond ((null? a)
- (values a #f))
- (else
- (let ((a1 (car a)))
- (cond ((< (distance-between-points (list (assoc-ref s1 'x) (assoc-ref s1 'y))
- (list (assoc-ref a1 'x) (assoc-ref a1 'y)))
- (assoc-ref a1 'size))
- (values (cdr a) #t))
- (else
- (receive (an k) (f1 s1 (cdr a))
- (values (cons a1 an) k))))))))
-
- (cond ((null? s)
- (values s a))
- (else
- (let ((s1 (car s)))
- (receive (an k) (f1 s1 a)
- (cond (k
- (kill-asteroids (cdr s) an))
- (else
- (receive (sn an) (kill-asteroids (cdr s) an)
- (values (cons s1 sn) an)))))))))
-
-
-(let ((asteroids #f) (ship #f) (shots #f))
- (define (new-game n)
- (set! asteroids (make-asteroids n))
- (set! ship '((x . 0) (y . 0) (angle . 0) (moving . #f)))
- (set! shots '()))
-
- (new-game 2)
-
- (run-game
- (cond ((killed-ship? ship asteroids)
- (new-game 2)))
- (receive (s a) (kill-asteroids shots asteroids)
- (set! shots s)
- (set! asteroids a))
- (set! asteroids (map move-asteroid asteroids))
- (set! ship (move-ship ship))
- (let ((shot (ship-shot ship)))
- (cond (shot
- (set! shots (cons shot shots)))))
- (set! shots (move-shots shots))
- (for-each draw-asteroid asteroids)
- (for-each draw-shot shots)
- (draw-ship ship)))
+
+;;; Game
+
+(define (init-asteroids n)
+ (cond ((> n 0)
+ (let ((x (- (random (* max-x 2)) max-x))
+ (y (- (random (* max-y 2)) max-y)))
+ (cond ((< (distance-between-points (list x y) '(0 0)) 120)
+ (init-asteroids n))
+ (else
+ (let ((angle (random 360)) (dir (- (random 360) 180)))
+ (show-mob (make-asteroid #:x x #:y y #:angle angle #:dir dir)))
+ (init-asteroids (- n 1))))))))
+
+
+(init-asteroids 2)
+(show-mob (make-ship))
+
+(let ((font (load-font "../tetris/lazy.ttf" #:size 20)))
+ (game
+ (render-text (format #f "Mobs: ~a" (length (get-active-mobs))) font)))
+
+
+;; (define (new-game n)
+;; (set! asteroids (make-asteroids n))
+;; (set! ship '((x . 0) (y . 0) (angle . 0) (moving . #f)))
+;; (set! shots '()))
+
+;; (new-game 2)
+
+;; (define (killed-ship? s a)
+;; (cond ((null? a) #f)
+;; (else
+;; (or (< (distance-between-points (list (assoc-ref s 'x) (assoc-ref s 'y))
+;; (list (assoc-ref (car a) 'x) (assoc-ref (car a) 'y)))
+;; (assoc-ref (car a) 'size))
+;; (killed-ship? s (cdr a))))))
+
+
+;; (let ((asteroids #f) (ship #f) (shots #f))
+
+;; (run-game
+;; (cond ((killed-ship? ship asteroids)
+;; (new-game 2)))
+;; (receive (s a) (kill-asteroids shots asteroids)
+;; (set! shots s)
+;; (set! asteroids a))
+;; (set! asteroids (map move-asteroid asteroids))
+;; (set! ship (move-ship (alist-copy ship)))
+;; (let ((shot (ship-shot ship)))
+;; (cond (shot
+;; (set! shots (cons shot shots)))))
+;; (set! shots (move-shots shots))
+;; (for-each draw-asteroid asteroids)
+;; (for-each draw-shot shots)
+;; (draw-ship ship)))
projects / gacela.git / blobdiff