(set-game-properties! #:title "Gacela Asteroids")
-(define max-x (/ (cdr (assoc 'width (get-game-properties))) 2))
+(define max-x (/ (assoc-ref (get-game-properties) 'width) 2))
(define min-x (- max-x))
-(define max-y (/ (cdr (assoc 'height (get-game-properties))) 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 (car a) (cadr a))
- (draw-texture asteroid))))
-
-(define (move-asteroid a)
- (let* ((x (car a)) (y (cadr a))
- (vx (caddr a)) (vy (cadddr a))
- (nx (+ x vx)) (ny (+ y vy)))
- (cond ((> nx max-x) (set! vx -1))
- ((< nx min-x) (set! vx 1)))
- (cond ((> ny max-y) (set! vy -1))
- ((< ny min-y) (set! vy 1)))
- (list (+ x vx) (+ y vy) vx vy)))
-
-(define draw-ship
- (let ((ship1 (load-texture "Ship1.png"))
- (ship2 (load-texture "Ship2.png")))
- (lambda (s)
- (to-origin)
- (translate (car s) (cadr s))
- (rotate (caddr s))
- (draw-texture ship1))))
-
-(define (move-ship s)
- (let ((x (car s)) (y (cadr s))
- (angle (caddr s))
- (vx (cadddr s)) (vy (cadddr (cdr s))))
- (cond ((key? 'left) (set! angle (+ angle 5)))
- ((key? 'right) (set! angle (- angle 5))))
- (cond ((key? 'up) (set! y (+ y 3))))
- (list x y angle vx vy)))
-
-(let ((asteroids '((100 100 1 1) (-100 -100 -1 1)))
- (ship '(0 0 0 0 0)))
+(define-macro (asteroid-killed?)
+ `(> (apply +
+ (map-mobs
+ (lambda (s) (if (< (distance-between-points (list (assoc-ref s 'x) (assoc-ref s 'y)) (list x y)) size) 1 0))
+ 'shot))
+ 0))
+
+(define-mob (asteroid
+ (image (load-texture "Asteroid.png"))
+ (x 0) (y 0) (angle 0) (dir 0) (size 100))
+ (cond ((asteroid-killed?)
+ (kill-me))
+ (else
+ (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))
+
+(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))))
+
+ (translate x y)
+ (rotate angle)
+ (draw-texture (if moving ship2 ship1)))
+
+(define-macro (shot-killed?)
+ `(> (apply +
+ (map-mobs
+ (lambda (a) (if (< (distance-between-points (list (assoc-ref a 'x) (assoc-ref a 'y)) (list x y)) (assoc-ref a 'size)) 1 0))
+ 'asteroid))
+ 0))
+
+(define-mob (shot (x 0) (y 0) (angle 0))
+ (cond ((shot-killed?)
+ (kill-me))
+ (else
+ (let ((r (degrees-to-radians (- angle))))
+ (set! x (+ x (* 10 (sin r))))
+ (set! y (+ y (* 10 (cos r))))
+ (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 (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)))
(run-game
- (set! asteroids (map move-asteroid asteroids))
- (set! ship (move-ship ship))
- (for-each draw-asteroid asteroids)
- (draw-ship ship)))
+ (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