blob: 793215d76c748632aadf755bb877d3e99bb056c1 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
;;; Chickadee Game Toolkit
;;; Copyright © 2017 David Thompson <davet@gnu.org>
;;;
;;; Chickadee is free software: you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published
;;; by the Free Software Foundation, either version 3 of the License,
;;; or (at your option) any later version.
;;;
;;; Chickadee is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;;; General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with this program. If not, see
;;; <http://www.gnu.org/licenses/>.
(define-module (chickadee buffer)
#:use-module (chickadee)
#:use-module (chickadee scripting)
#:use-module (oop goops)
#:export (<buffer>
started?
start
stop
pause
resume
update
before-draw
draw
after-draw
abort
key-press
key-release
text-input
mouse-press
mouse-move
controller-add
controller-remove
controller-press
controller-release
controller-move
current-buffer
push-buffer!
pop-buffer!
replace-buffer!
use-buffers!))
(define-class <buffer> ()
(started? #:init-value #f #:accessor buffer-started?)
(agenda #:init-thunk make-agenda #:getter buffer-agenda))
(define-method (start (buffer <buffer>))
#t)
(define-method (stop (buffer <buffer>))
#t)
(define-method (pause (buffer <buffer>))
#t)
(define-method (resume (buffer <buffer>))
#t)
(define-method (update (buffer <buffer>) dt)
#t)
(define-method (abort (buffer <buffer>))
(abort-game))
(define-method (before-draw (buffer <buffer>))
#t)
(define-method (draw (buffer <buffer>) alpha)
#t)
(define-method (after-draw (buffer <buffer>))
#t)
(define-method (key-press (buffer <buffer>) key scancode modifiers repeat?)
#t)
(define-method (key-release (buffer <buffer>) key scancode modifiers)
#t)
(define-method (text-input (buffer <buffer>) text)
#t)
(define-method (mouse-press (buffer <buffer>) button clicks x y)
#t)
(define-method (mouse-release (buffer <buffer>) button x y)
#t)
(define-method (mouse-move (buffer <buffer>) x y x-rel y-rel buttons)
#t)
(define-method (controller-add (buffer <buffer>) controller)
#t)
(define-method (controller-remove (buffer <buffer>) controller)
#t)
(define-method (controller-press (buffer <buffer>) controller button)
#t)
(define-method (controller-release (buffer <buffer>) controller button)
#t)
(define-method (controller-move (buffer <buffer>) controller axis value)
#t)
;;;
;;; Buffer management
;;;
(define *buffers* '())
(define (current-buffer)
(and (not (null? *buffers*))
(car *buffers*)))
(define-syntax-rule (with-buffer buffer body ...)
(with-agenda (buffer-agenda buffer)
body ...))
(define-syntax-rule (with-current-buffer name body ...)
(let ((name (current-buffer)))
(with-buffer name
body ...)))
(define* (switch-buffers old new #:optional replace?)
(when (is-a? old <buffer>)
(with-buffer old
(if replace?
(stop old)
(pause old))))
(with-buffer new
(if (buffer-started? new)
(resume new)
(begin
(start new)
(set! (buffer-started? new) #t)))))
(define (push-buffer! buffer)
(let ((old (current-buffer)))
(set! *buffers* (cons buffer *buffers*))
(switch-buffers old buffer)))
(define (pop-buffer!)
(let ((old (current-buffer)))
(set! *buffers* (cdr *buffers*))
(if (null? *buffers*)
(begin
(stop old)
(abort-game))
(switch-buffers old (current-buffer) #t))))
(define (replace-buffer! buffer)
(let ((old (current-buffer)))
(set! *buffers* (cons buffer (cdr *buffers*)))
(switch-buffers old buffer #t)))
(define (use-buffers! initial-buffer)
(add-hook! load-hook
(lambda ()
(push-buffer! initial-buffer)))
(add-hook! update-hook
(lambda (dt)
(with-current-buffer buffer
(update-agenda 1)
(update buffer dt))))
(add-hook! before-draw-hook
(lambda ()
(with-current-buffer buffer
(before-draw buffer))))
(add-hook! after-draw-hook
(lambda ()
(with-current-buffer buffer
(after-draw buffer))))
(add-hook! draw-hook
(lambda (alpha)
(with-current-buffer buffer
(draw buffer alpha))))
(add-hook! quit-hook
(lambda ()
(with-current-buffer buffer
(abort buffer))))
(add-hook! key-press-hook
(lambda (key scancode modifiers repeat?)
(with-current-buffer buffer
(key-press buffer key scancode modifiers repeat?))))
(add-hook! key-release-hook
(lambda (key scancode modifiers)
(with-current-buffer buffer
(key-release buffer key scancode modifiers))))
(add-hook! text-input-hook
(lambda (text)
(with-current-buffer buffer
(text-input buffer text))))
(add-hook! mouse-press-hook
(lambda (button clicks x y)
(with-current-buffer buffer
(mouse-press buffer button clicks x y))))
(add-hook! mouse-release-hook
(lambda (button x y)
(with-current-buffer buffer
(mouse-release buffer button x y))))
(add-hook! mouse-move-hook
(lambda (x y x-rel y-rel buttons)
(with-current-buffer buffer
(mouse-move buffer x y x-rel y-rel buttons))))
(add-hook! controller-add-hook
(lambda (controller)
(with-current-buffer buffer
(controller-add buffer controller))))
(add-hook! controller-remove-hook
(lambda (controller)
(with-current-buffer buffer
(controller-remove buffer controller))))
(add-hook! controller-press-hook
(lambda (controller button)
(with-current-buffer buffer
(controller-press buffer controller button))))
(add-hook! controller-release-hook
(lambda (controller button)
(with-current-buffer buffer
(controller-release buffer controller button))))
(add-hook! controller-move-hook
(lambda (controller axis value)
(with-current-buffer buffer
(controller-move buffer controller axis value)))))
|
