;;; Gacela, a GNU Guile extension for fast games development
-;;; Copyright (C) 2009 by Javier Sancho Fernandez <jsf at jsancho dot org>
+;;; Copyright (C) 2013 by Javier Sancho Fernandez <jsf at jsancho dot org>
;;;
;;; This program is free software: you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
(define-module (gacela gacela)
- #:use-module (gacela events)
- #:use-module (gacela video)
- #:use-module (gacela audio)
- #:use-module (ice-9 optargs)
- #:export (*title*
- *width-screen*
- *height-screen*
- *bpp-screen*
- *frames-per-second*
- *mode*
- set-game-properties!
- get-game-properties
- init-gacela
- quit-gacela
- game-loop
- gacela-script
- game-running?
- show-mob-hash
- hide-mob-hash
- get-active-mobs
- hide-all-mobs
- get-current-mob-id
- get-mob-function-name
- map-mobs
- translate-mob)
- #:export-syntax (game
- show-mob
- hide-mob
- the-mob
- define-mob-function
- define-mob
- lambda-mob
- define-checking-mobs)
- #:re-export (translate
- get-frame-time
- 3d-mode?))
+ #:use-module (gacela system)
+ #:use-module (ice-9 threads)
+ #:use-module (srfi srfi-1)
+ #:export (make-world))
-;;; Main Loop
+;;; Entities and components
-(define loop-flag #f)
-(define game-loop-thread #f)
+(define (make-world . entities)
+ (apply make-entity-set entities))
-(define-macro (run-in-game-loop proc)
- (let ((pgl (string->symbol (string-concatenate (list (symbol->string proc) "-in-game-loop"))))
- (flag-symbol (gensym))
- (value-symbol (gensym)))
- `(begin
- (define ,pgl ,proc)
- (define (,proc . param)
- (cond ((and game-loop-thread (not (eq? game-loop-thread (current-thread))))
- (let ((,flag-symbol #f))
- (define ,value-symbol)
- (system-async-mark
- (lambda ()
- (catch #t
- (lambda () (set! ,value-symbol (apply ,pgl param)))
- (lambda (key . args) #f))
- (set! ,flag-symbol #t))
- game-loop-thread)
- (while (not ,flag-symbol))
- ,value-symbol))
- (else
- (apply ,pgl param)))))))
+(define entities-mutex (make-mutex))
+(define game-entities '())
+(define game-components '())
-(run-in-game-loop load-texture)
-(run-in-game-loop load-font)
-(run-in-game-loop set-screen-bpp!)
-(run-in-game-loop resize-screen)
-(define-macro (game . code)
- (if (null? code)
- #f
- `(call-with-new-thread (lambda () ,@code))))
+(define (entity . components)
+ (with-mutex entities-mutex
+ (let ((key (gensym)))
+ (set! game-entities
+ (acons key
+ (map (lambda (c) (list (get-component-type c) c)) components)
+ game-entities))
+ (set! game-components (register-components key components))
+ key)))
-(define (init-gacela)
- (hide-all-mobs)
- (cond ((not game-loop-thread)
- (set! game-loop-thread (call-with-new-thread (lambda () (cond ((not (game-running?)) (game-loop))))))))
- (while (not loop-flag))
- #t)
-(define (quit-gacela)
- (hide-all-mobs)
- (set! game-loop-thread #f)
- (set! loop-flag #f))
-
-(define (game-loop)
- (refresh-active-mobs)
- (init-video *width-screen* *height-screen* *bpp-screen* #:title *title* #:mode *mode* #:fps *frames-per-second*)
- (set! loop-flag #t)
- (while loop-flag
- (init-frame-time)
-; (check-connections)
- (process-events)
- (cond ((quit-signal?)
- (quit-gacela))
- (else
- (clear-screen)
- (to-origin)
- (refresh-active-mobs)
- (run-mobs)
- (run-extensions)
- (flip-screen)
- (delay-frame))))
- (quit-video))
-
-(define (gacela-script args)
- (while loop-flag (sleep 1)))
-
-(define (game-running?)
- loop-flag)
-
-
-;;; Extensions to main loop
-
-(define extensions '())
-
-(define (add-extension! proc pri)
- "Add an extension with a priority to the main loop"
- (set! extensions
- (sort (assoc-set! extensions proc pri)
- (lambda (a b)
- (< (cdr a) (cdr b))))))
-
-(define (remove-extension! proc)
- "Remove an extension from the main loop"
- (set! extensions
- (assoc-remove! extensions proc)))
-
-(define (run-extensions)
- (for-each (lambda (x) ((car x))) extensions))
-
-
-;;; Game Properties
-
-(define *title* "Gacela")
-(define *width-screen* 640)
-(define *height-screen* 480)
-(define *bpp-screen* 32)
-(define *frames-per-second* 20)
-(define *mode* '2d)
-(define *fullscreen* 'off)
-
-(define* (set-game-properties! #:key title width height bpp fps mode fullscreen)
- (if title
- (set-screen-title! title))
- (if bpp
- (set-screen-bpp! bpp))
- (if (or width height)
- (begin
- (if (not width) (set! width (get-screen-width)))
- (if (not height) (set! height (get-screen-height)))
- (resize-screen width height)))
- (if fps
- (set-frames-per-second! fps))
- (if mode
- (if (eq? mode '3d) (set-3d-mode) (set-2d-mode)))
- (if fullscreen
- (set-fullscreen! fullscreen))
- (get-game-properties))
-
-(define (get-game-properties)
- `((title . ,(get-screen-title)) (width . ,(get-screen-width)) (height . ,(get-screen-height)) (bpp . ,(get-screen-bpp)) (fps . ,(get-frames-per-second)) (mode . ,(if (3d-mode?) '3d '2d)) (fullscreen . ,(get-fullscreen))))
-
-
-;;; Mobs Factory
-
-(define mobs-table (make-hash-table))
-(define active-mobs '())
-(define mobs-changed #f)
-
-(define (show-mob-hash mob)
- (hash-set! mobs-table (mob 'get-mob-id) mob)
- (set! mobs-changed #t))
-
-(define (hide-mob-hash mob-id)
- (hash-remove! mobs-table mob-id)
- (set! mobs-changed #t))
-
-(define (refresh-active-mobs)
- (cond (mobs-changed
- (set! mobs-changed #f)
- (set! active-mobs (hash-map->list (lambda (k v) v) mobs-table)))))
-
-(define (get-active-mobs)
- active-mobs)
-
-(define (hide-all-mobs)
- (set! mobs-changed #t)
- (hash-clear! mobs-table))
-
-(define (mobs-changed?)
- mobs-changed)
-
-
-(define-macro (show-mob mob)
- (cond ((list? mob)
- `(let ((m ,mob))
- (show-mob-hash m)))
+(define* (register-components entity components #:optional (clist game-components))
+ (cond ((null? components) clist)
(else
- `(show-mob-hash (lambda* (#:optional (option #f)) (,mob option))))))
-
-(define-macro (hide-mob mob)
- (cond ((list? mob)
- `(let ((m ,mob))
- (hide-mob-hash (m 'get-mob-id))))
- (else
- `(hide-mob-hash (,mob 'get-mob-id)))))
-
-(define current-mob-id #f)
-
-(define translate-mob translate)
-
-(define (get-current-mob-id)
- current-mob-id)
-
-(define* (run-mobs #:optional (mobs (get-active-mobs)))
- (let ((sorted-mobs (sort mobs (lambda (m1 m2) (< (m1 'get-z-index) (m2 'get-z-index))))))
- (for-each
- (lambda (m)
- (set! current-mob-id (m 'get-mob-id))
- (glmatrix-block (m)))
- sorted-mobs)
- (set! current-mob-id #f)))
-
-
-;;; Making mobs
-
-(define mob-functions (make-hash-table))
-
-(define (get-mob-function-name mob-name)
- (let ((name (hash-ref mob-functions mob-name)))
- (cond ((not name)
- (set! name (gensym))
- (hash-set! mob-functions mob-name name)))
- name))
-
-(define-macro (the-mob mob-name init-data)
- `(let ((mob-id (gensym))
- (mob-z-index 0)
- (mob-time 0)
- (mob-data ,init-data)
- (saved-data ,init-data))
- (lambda* (#:optional (option #f))
- (define (save-data)
- (let ((time (get-frame-time)))
- (cond ((not (= time mob-time))
- (set! mob-time time)
- (set! saved-data mob-data)))))
- (case option
- ((get-mob-id)
- mob-id)
- ((get-z-index)
- mob-z-index)
- ((get-type)
- (procedure-name ,mob-name))
- ((get-data)
- (save-data)
- saved-data)
- (else
- (cond ((keyword? option)
- (assoc-ref saved-data (keyword->symbol option)))
- (else
- (save-data)
- (let ((res (,mob-name mob-id mob-data)))
- (set! mob-z-index (car res))
- (set! mob-data (cadr res))))))))))
-
-(define-macro (define-mob-function attr . body)
- (let ((attr (map (lambda (a) (if (list? a) a (list a #f))) attr))
- (mob-id-symbol (gensym))
- (mob-id-z-index (gensym))
- (data-symbol (gensym)))
- `(lambda (,mob-id-symbol ,data-symbol)
- (let ((,mob-id-z-index 0))
- (define (kill-me)
- (hide-mob-hash ,mob-id-symbol))
- (define* (translate x y #:optional (z 0))
- (cond ((3d-mode?)
- (translate-mob x y z))
- (else
- (set! ,mob-id-z-index (+ ,mob-id-z-index z))
- (translate-mob x y))))
- (let* ,attr
- ,@(map
- (lambda (a)
- `(let ((val (assoc-ref ,data-symbol ',(car a))))
- (cond (val (set! ,(car a) val)))))
- attr)
- (catch #t
- (lambda* () ,@body)
- (lambda (key . args) #f))
- (list ,mob-id-z-index (list ,@(map (lambda (a) `(cons ',(car a) ,(car a))) attr))))))))
-
-(define-macro (define-mob mob-head . body)
- (let* ((name (car mob-head))
- (attr (cdr mob-head))
- (make-fun-symbol (gensym))
- (mob-fun-symbol (gensym))
- (params-symbol (gensym)))
- `(define (,name . ,params-symbol)
- (define ,make-fun-symbol
- (lambda* ,(if (null? attr) '() `(#:key ,@attr))
- (the-mob ,name (list ,@(map (lambda (a) `(cons ',(car a) ,(car a))) attr)))))
- (define ,mob-fun-symbol
- (define-mob-function ,attr ,@body))
- (cond ((or (null? ,params-symbol) (keyword? (car ,params-symbol)))
- (apply ,make-fun-symbol ,params-symbol))
- (else
- (apply ,mob-fun-symbol ,params-symbol))))))
-
-(define-macro (lambda-mob attr . body)
- (let ((fun-name (gensym)))
- `(begin
- (define-mob-function ,(cons fun-name attr) ,@body)
- (the-mob 'undefined '() ,fun-name))))
-
-
-;;; Functions for checking mobs (collisions and more)
-
-(define (map-mobs fun type)
- (let ((mobs (filter (lambda (m) (and (eq? (m 'get-type) type) (not (eq? (m 'get-mob-id) (get-current-mob-id))))) (get-active-mobs))))
- (map (lambda (m) (fun (m 'get-data))) mobs)))
-
-(define-macro (define-checking-mobs head mob-def . body)
- (let ((type (car mob-def)) (attr (cdr mob-def)))
- `(define ,head
- (map-mobs
- (lambda (m)
- (let ,(map (lambda (a) `(,(car a) (assoc-ref m ',(cadr a)))) attr)
- ,@body))
- ',type))))
-
+ (let* ((type (get-component-type (car components)))
+ (elist (assoc-ref clist type)))
+ (register-components entity (cdr components)
+ (assoc-set! clist type
+ (cond (elist
+ (lset-adjoin eq? elist entity))
+ (else
+ (list entity)))))))))
-;;; Scenes
-(define-macro (define-scene name . body)
- `(define (,name)
- ,@body))
+(define (get-entity key)
+ (with-mutex entities-mutex
+ (assoc key game-entities)))
-(module-map (lambda (sym var)
- (if (not (eq? sym '%module-public-interface))
- (module-export! (current-module) (list sym))))
- (current-module))
+(export entity
+ get-entity)
projects / gacela.git / blobdiff