X-Git-Url: https://git.jsancho.org/?a=blobdiff_plain;f=games%2Fasteroids%2Fasteroids.scm;h=a12c1def86f7a0b0aa43a523d2f9b6218cae1e5d;hb=2eee3eb546a25305d548fcb331769be84fd3a38f;hp=756dd73d4e5bf7dd14e4c83af5b8138ca0aa8f8e;hpb=a27500cab231ad3051fba783d74f77e72990bb48;p=gacela.git

diff --git a/games/asteroids/asteroids.scm b/games/asteroids/asteroids.scm
index 756dd73..a12c1de 100644
--- a/games/asteroids/asteroids.scm
+++ b/games/asteroids/asteroids.scm
@@ -1,3 +1,11 @@
+#!/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))
@@ -5,63 +13,92 @@
 (define max-y (/ (assoc-ref (get-game-properties) 'height) 2))
 (define min-y (- max-y))
 
+
+;;; 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))
-  (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))))
+	     (x 0) (y 0) (angle 0) (dir 0) (size 100))
+  (cond ((asteroid-killed? x y size)
+	 (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))
 
+
+;;; 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))))
+  	((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)))
+  	 (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))))
+  	 (show-mob (make-shot #:x x #:y y #:angle angle))))
 
   (translate x y)
   (rotate angle)
   (draw-texture (if moving ship2 ship1)))
 
+
+;;; 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))
-  (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))))
+  (cond ((shot-killed? x y)
+	 (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))
 
 
+;;; Game
+
 (define (init-asteroids n)
   (cond ((> n 0)
 	 (let ((x (- (random (* max-x 2)) max-x))
@@ -76,6 +113,11 @@
 
 (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))
@@ -92,31 +134,6 @@
 ;; 		(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))