;;;; (C) 2006 Jonathan Heusser, minor changes by Frank Buss
(in-package #:lispbuilder-sdl-examples)
(defun show-score (score)
(sdl-cffi::sdl-wm-set-caption (format nil "Squashed - Score: ~a" score) "Squashed"))
(defun squashed ()
"Squashed: main entry function"
(sdl:with-init ()
(sdl:window 640 480)
(setf (sdl:frame-rate) 30)
(let ((bug (sdl:convert-surface :surface (sdl:load-image (sdl:create-path "squashed/bug.bmp" *bmp-path*)
:color-key (sdl:color :r 255 :g 255 :b 255))
:free t))
(racket (sdl:convert-surface :surface (sdl:load-image (sdl:create-path "squashed/racket.bmp" *bmp-path*)
:color-key (sdl:color :r 255 :g 255 :b 255))
:free t))
(blood (sdl:convert-surface :surface (sdl:load-image (sdl:create-path "squashed/blood.bmp" *bmp-path*)
:color-key (sdl:color :r 255 :g 255 :b 255))
:free t))
(squash (sdl:convert-surface :surface (sdl:load-image (sdl:create-path "squashed/squash.bmp" *bmp-path*)
:color-key (sdl:color :r 255 :g 255 :b 255))
:free t))
(levelticks 1000)
(last-squash-tick 0)
(lasttick 0)
(score 0)
(bug? t) (racket? t) (blood? nil) (squash? nil) (squashed? nil))
(sdl:set-position-* bug :x (random 640) :y (random 480))
(sdl:set-position-* racket :x 100 :y 100)
(sdl:set-position-* squash :x 0 :y 0)
(show-score score)
(sdl:show-cursor nil)
(sdl:with-events ()
(:quit-event () t)
(:key-down-event (:key key)
(when (eq key :sdl-key-escape) (sdl:push-quit-event)))
(:mouse-motion-event (:x x :y y)
(sdl:set-position-* racket :x x :y y))
(:mouse-button-down-event (:x x :y y)
;; check if squashed
(when (sdl:within-range (sdl:get-point racket)
(sdl:get-point bug)
17)
(setf squashed? t
bug? nil
blood? t
squash? t)
(sdl:set-position-* blood :x x :y y)
(setf last-squash-tick (sdl-cffi::SDL-Get-Ticks))
(show-score (incf score))
; increase the bug jumping speed
(when (> levelticks 200)
(decf levelticks 100))))
(:idle ()
(sdl:with-surface (disp sdl:*default-display*)
;; fill the background white
(sdl:clear-display (sdl:color :r 255 :g 255 :b 255))
;; draw images
(if squashed?
(if (> (- (sdl-cffi::SDL-Get-Ticks) last-squash-tick) 700)
(setf squashed? nil
squash? nil
blood? nil
bug? t))
(when (> (sdl-cffi::SDL-Get-Ticks) (+ lasttick levelticks))
(setf lasttick (sdl-cffi::SDL-Get-Ticks))
(sdl:set-position-* bug :x (random 640) :y (random 480))))
(when squash? (sdl:draw-surface squash))
(when bug? (sdl:draw-surface bug))
(when blood? (sdl:draw-surface blood))
(when racket? (sdl:draw-surface racket))
(sdl:update-display)))))))
