;;; 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 (load-texture
- load-font
- *title*
- *width-screen*
- *height-screen*
- *bpp-screen*
- *frames-per-second*
- *mode*
- set-game-properties!
- get-game-properties
- init-gacela
- quit-gacela
- game-loop
- game-running?
- set-game-code
- show-mob-hash
- hide-mob-hash
- get-active-mobs
- hide-all-mobs
- get-current-mob-id
- get-mob-function-name
- map-mobs)
- #:export-syntax (game
- show-mob
- hide-mob
- the-mob
- define-mob-function
- define-mob
- lambda-mob
- define-checking-mobs)
- #:re-export (get-current-color
- set-current-color
- with-color
- progn-textures
- draw
- draw-texture
- draw-line
- draw-quad
- draw-rectangle
- draw-square
- draw-cube
- translate
- rotate
- to-origin
- add-light
- set-camera
- camera-look
- render-text
- get-frame-time
- key?
- key-pressed?
- key-released?))
+ #:use-module (gacela system)
+ #:use-module (ice-9 threads)
+ #:use-module (srfi srfi-1)
+ #:export (make-world))
-;;; Resources Cache
+;;; Entities and components
-(define resources-cache (make-weak-value-hash-table))
+(define (make-world . entities)
+ (apply make-entity-set entities))
-(define (from-cache key)
- (hash-ref resources-cache key))
+(define entities-mutex (make-mutex))
+(define game-entities '())
+(define game-components '())
-(define (into-cache key res)
- (hash-set! resources-cache key res))
-(define-macro (use-cache-with module proc)
- (let ((pwc (string->symbol (string-concatenate (list (symbol->string proc) "-without-cache")))))
- `(begin
- (define ,pwc (@ ,module ,proc))
- (define (,proc . param)
- (let* ((key param)
- (res (from-cache key)))
- (cond (res
- res)
- (else
- (set! res (apply ,pwc param))
- (into-cache key res)
- res)))))))
+(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)))
-(use-cache-with (gacela video) load-texture)
-(use-cache-with (gacela video) load-font)
-
-;;; Main Loop
-
-(define loop-flag #f)
-(define game-code #f)
-(define game-loop-thread #f)
-
-(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)))))))
-
-(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)
- `(let ((game-function ,(if (null? code)
- `(lambda () #f)
- `(lambda () ,@code))))
- (set-game-code game-function)
- (cond ((not (game-running?))
- (game-loop)))))
-
-(define (init-gacela)
- (set! game-loop-thread (call-with-new-thread (lambda () (game))))
- (while (not loop-flag))
- #t)
-
-(define (quit-gacela)
- (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)
- (if (procedure? game-code)
- (catch #t
- (lambda () (game-code))
- (lambda (key . args) #f)))
- (run-mobs)
- (flip-screen)
- (delay-frame))))
- (quit-video))
-
-(define (game-running?)
- loop-flag)
-
-(define (set-game-code game-function)
- (set! game-code game-function))
-
-
-;;; 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* (set-game-properties! #:key title width height bpp fps mode)
- (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)))
- (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))))
-
-
-;;; 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)))
- (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))))
+(define* (register-components entity components #:optional (clist game-components))
+ (cond ((null? components) clist)
(else
- `(hide-mob-hash (,mob 'get-mob-id)))))
-
-(define current-mob-id #f)
-
-(define (get-current-mob-id)
- current-mob-id)
-
-(define* (run-mobs #:optional (mobs (get-active-mobs)))
- (for-each
- (lambda (m)
- (set! current-mob-id (m 'get-mob-id))
- (glmatrix-block (m)))
- 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 type init-data fun-name)
- `(let ((mob-id (gensym))
- (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-type)
- ,type)
- ((get-data)
- (save-data)
- saved-data)
- (else
- (save-data)
- (set! mob-data (,fun-name mob-id mob-data)))))))
-
-(define-macro (define-mob-function head . body)
- (let ((fun-name (car head))
- (attr (map (lambda (a) (if (list? a) a (list a #f))) (cdr head)))
- (mob-id-symbol (gensym))
- (data-symbol (gensym)))
- `(define (,fun-name ,mob-id-symbol ,data-symbol)
- (define (kill-me)
- (hide-mob-hash ,mob-id-symbol))
- (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 ,@(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))
- (fun-name (get-mob-function-name name)))
- `(begin
- (define-mob-function ,(cons fun-name attr) ,@body)
- (define ,(string->symbol (string-concatenate (list "make-" (symbol->string name))))
- (lambda* ,(if (null? attr) '() `(#:key ,@attr))
- (the-mob ',name (list ,@(map (lambda (a) `(cons ',(car a) ,(car a))) attr)) ,fun-name))))))
-
-(define-macro (lambda-mob attr . body)
- (let ((fun-name (gensym)))
- `(begin
- (define-mob-function ,(cons fun-name attr) ,@body)
- (the-mob 'undefined '() ,fun-name))))
+ (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)))))))))
-;;; Functions for checking mobs (collisions and more)
+(define (get-entity key)
+ (with-mutex entities-mutex
+ (assoc key game-entities)))
-(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))))
+(export entity
+ get-entity)
projects / gacela.git / blobdiff