Preparing new version 0.6

[gacela.git] / games / asteroids / asteroids.scm

diff --git a/games/asteroids/asteroids.scm b/games/asteroids/asteroids.scm
index 8f1c91124591f9a9cc2820fd8e27abb79fb0cbac..a12c1def86f7a0b0aa43a523d2f9b6218cae1e5d 100644 (file)
--- 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))
@@ -76,9 +113,9 @@
 
 (init-asteroids 2)
 (show-mob (make-ship))
-
+     
 (let ((font (load-font "../tetris/lazy.ttf" #:size 20)))
-  (run-game
+  (game
    (render-text (format #f "Mobs: ~a" (length (get-active-mobs))) font)))
 
 
@@ -97,31 +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))