;;; Copyright 2009-2011 Christoph Senjak

(in-package :uxul-world)

(defparameter *cfont* nil)
(defparameter *zoomx* 1.0)
(defparameter *zoomy* 1.0)

(defun run-testing-room ()
  (start-game :room-function #'make-testing-room))

(defun run-room (item-list)
  (start-game :room-function
	      #'(lambda () (create-room-from-item-list item-list))))

(defun start-game (&key (music nil)
		   (room-function #'make-additional-testing-room)
		   (15-fps nil))
  "Start the Game: Call room-function for getting the room-object to
run. Music is ignored so far. 15-fps makes only every second frame be
drawn (for very slow computers)"
;  (sdl:set-video-driver "directx")
     (sdl:with-init (sdl:sdl-init-video) ;sdl:sdl-init-video sdl:sdl-init-audio)
       (sdl:window +screen-width+ +screen-height+
		   :title-caption "Uxul World"
		   :icon-caption "Uxul World"
		   :flags sdl:sdl-opengl
		   ;:opengl T
		   ;:flags (logior sdl:sdl-hw-accel  sdl:sdl-hw-surface)
		   ;:flags (logior sdl:sdl-hw-surface) #| sdl:sdl-fullscreen )|# 
		   )
       (setf cl-opengl-bindings:*gl-get-proc-address*
	     #'sdl-cffi::sdl-gl-get-proc-address)
       ;;(if music (sdl-mixer:OPEN-AUDIO :frequency 44100))

       (gl:hint :perspective-correction-hint :nicest)


       (let ((*graphics-table* (make-hash-table :test #'equal))
	     (*zoomx* (/ 1.0 +screen-width+))
	     (*zoomxi* (/ .01 +screen-width+))
	     (*zoomy* (/ 1.0 +screen-height+))
	     (*zoomyi* (/ .01 +screen-height+))
	     (*zoom-ash* 0))
	 (if 15-fps
	     (setf (sdl:frame-rate) 15)
	     (setf (sdl:frame-rate) 30))
	 
	 (setf *current-room* (funcall room-function))

	 ;(sdl:clear-display (sdl:color :r 0 :g 0 :b 0));; :update-p nil)

	 ;;(if music (sdl-mixer:play-sample levelmusic))
      
	 (sdl:with-events ()
	   (:quit-event () 
			#|(if music
			(progn (sdl-mixer:halt-music)
			(sdl-mixer:halt-sample :channel t)
			(sdl-mixer:free levelmusic)
			(sdl-mixer:close-audio))
			t
			)|# t)
	   (:key-down-event (:key key)
			    (cond
			      ((sdl:key= key :SDL-KEY-ESCAPE)
			       (sdl:push-quit-event))
			      ((sdl:key= key :SDL-KEY-U)
			       (incf *zoomx* *zoomxi*)
			       (incf *zoomy* *zoomyi*))
			      ((sdl:key= key :SDL-KEY-D)
			       (decf *zoomx* *zoomxi*)
			       (decf *zoomy* *zoomyi*))
			      (T
			       (on-key-down *current-room* key))))
	   (:mouse-button-down-event
	    (:button btn)
	    (cond
	      ((= btn sdl:mouse-wheel-up)
	       (incf *zoomx* *zoomxi*) (incf *zoomy* *zoomyi*))
	      ((= btn sdl:mouse-wheel-down)
	       (decf *zoomx* *zoomxi*) (decf *zoomy* *zoomyi*))))
	   (:key-up-event (:key key)
			  (on-key-up *current-room* key))
	   (:idle
	    (progn
	      (invoke *current-room*)
	      (when 15-fps
		(invoke *current-room*))
	      (gl:clear :color-buffer-bit :depth-buffer-bit)
	      (gl:enable :texture-2d)
	      (gl:enable :blend)
	      (gl:blend-func :src-alpha :one-minus-src-alpha)
	      (gl:load-identity)
	      (draw *current-room*)
	      (gl:flush)
	      (sdl:update-display)))))))


;; ;; For Debugging

;; (defun preview-animation (frameskip &rest images)

;;      (sdl:with-init (sdl:sdl-init-video sdl:sdl-init-audio)
;;        (sdl:window +screen-width+ +screen-height+
;; 		   :title-caption "Uxul World"
;; 		   :icon-caption "Uxul World"
;; 		   :flags (logior sdl:sdl-hw-accel)
;; 		   #| :flags (logior sdl:sdl-hw-surface sdl:sdl-fullscreen )|#  )
;;        (let ((*graphics-table*
;; 	      #-ecl (trivial-garbage:make-weak-hash-table
;; 		     :weakness :value
;; 		     :test #'equal)
;; 	      #+ecl (make-hash-table :test #'equal)
;; 	      )
;; 	     (my-anim (apply #'make-animation frameskip images))
;; 	     )
	 
;; 	 (setf (sdl:frame-rate) 30)
;; 	 (sdl:clear-display (sdl:color :r 64 :g 64 :b 46));; :update-p nil)
      
;; 	 (sdl:with-events ()
;; 	   (:quit-event () t)
;; 	   (:key-down-event (:key key)
;; 			    (cond
;; 			      ((sdl:key= key :SDL-KEY-ESCAPE)
;; 			       (sdl:push-quit-event))))
;; 	   (:idle
;; 	    (progn
;; 	      (sdl:clear-display (sdl:color :r 64 :g 64 :b 46));; :update-p nil)


;; 	      (draw my-anim)
	      
;; 	      (sdl:update-display)
;; 	 ))))))