blob: 92a50e13a149858cf8fb8360dd8464b02810051d (
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
|
(defvar key-left 65361) ;; macroquad input code
(defvar key-up 65362)
(defvar key-right 65363)
(defvar key-down 65364)
(defvar gameover ())
(defvar tile-size (list 18.0 24.0))
(defvar subtile-width 5.0)
(defvar subtile-height 7.0)
(defvar player-direction ())
(defvar player-body (list (list 3 2)))
(defvar frame-timer-duration 0.3)
(defvar frame-timer 0.0)
(defvar fruit-tile (list 4 5))
(defun is-tile-equal? (pos1 pos2)
(and (== (car pos1) (car pos2)) (== (cadr pos1) (cadr pos2)))
)
(defun sum-pos (pos1 pos2)
(list (+ (car pos1) (car pos2)) (+ (cadr pos1) (cadr pos2)))
)
(defun tile-to-pos (tile)
(list (* (car tile) (car tile-size)) (* (cadr tile) (cadr tile-size)))
)
(defun draw-subtile (tile subtile)
(defvar offset (tile-to-pos tile))
(mq-draw-rectangle (+ (car offset) (+ (* subtile-width (car subtile)) (car subtile))) (+ (cadr offset) (+ (* subtile-height (cadr subtile)) (cadr subtile))) subtile-width subtile-height)
)
(defun draw-fruit (tile)
(draw-subtile tile (list 1 0))
(draw-subtile tile (list 2 1))
(draw-subtile tile (list 1 2))
(draw-subtile tile (list 0 1))
)
(defun draw-horizontal-line (tile)
(draw-subtile tile (list 0 1))
(draw-subtile tile (list 1 1))
(draw-subtile tile (list 2 1))
)
(defun draw-vertical-line (tile)
(draw-subtile tile (list 1 0))
(draw-subtile tile (list 1 1))
(draw-subtile tile (list 1 2))
)
(defun draw-corner-tl (tile)
(draw-subtile tile (list 1 1))
(draw-subtile tile (list 2 1))
(draw-subtile tile (list 1 2))
)
(defun draw-corner-tr (tile)
(draw-subtile tile (list 1 1))
(draw-subtile tile (list 0 1))
(draw-subtile tile (list 1 2))
)
(defun draw-corner-bl (tile)
(draw-subtile tile (list 1 1))
(draw-subtile tile (list 1 0))
(draw-subtile tile (list 2 1))
)
(defun draw-corner-br (tile)
(draw-subtile tile (list 1 1))
(draw-subtile tile (list 1 0))
(draw-subtile tile (list 0 1))
)
(defun draw-snake-tile (tile)
(defvar offset (tile-to-pos tile))
(mq-draw-rectangle (car offset) (cadr offset) (car tile-size) (cadr tile-size) 0.4)
(draw-subtile tile (list 0 0))
(draw-subtile tile (list 1 0))
(draw-subtile tile (list 2 0))
(draw-subtile tile (list 0 1))
(draw-subtile tile (list 1 1))
(draw-subtile tile (list 2 1))
(draw-subtile tile (list 0 2))
(draw-subtile tile (list 1 2))
(draw-subtile tile (list 2 2))
)
(defun process-input ()
(if (mq-is-key-pressed key-left)
(setq player-direction key-left))
(if (mq-is-key-pressed key-right)
(setq player-direction key-right))
(if (mq-is-key-pressed key-up)
(setq player-direction key-up))
(if (mq-is-key-pressed key-down)
(setq player-direction key-down))
)
(defun move-player-body (dir)
(setq player-body (move-player-body-aux player-body (sum-pos (car player-body) dir)))
)
(defun move-player-body-aux (body pos)
(if (not (null (cdr body)))
(cons pos (move-player-body-aux (cdr body) (car body)))
(cons pos ()))
)
(defun push-new-tile ()
(setq player-body (push-new-tile-aux player-body))
)
(defun push-new-tile-aux (body)
(if (null (cdr body))
(list (car body) (car body))
(cons (car body) (push-new-tile-aux (cdr body)))
))
(defun check-collision-self ()
(if (null (cdr player-body))
()
(check-collision-self-aux (cdr player-body) (car player-body)))
)
(defun check-collision-self-aux (body pos)
(if (is-tile-equal? (car body) pos)
1
(if (null (cdr body))
()
(check-collision-self-aux (cdr body) pos))
)
)
(defun process-frame ()
;; Set frame timer to 0 (game is running at 60 FPS)
(setq frame-timer 0.0)
;; Move player
(if (== player-direction key-left)
(move-player-body (list -1 0))
)
(if (== player-direction key-up)
(move-player-body (list 0 -1))
)
(if (== player-direction key-right)
(move-player-body (list 1 0))
)
(if (== player-direction key-down)
(move-player-body (list 0 1))
)
;; Check collision with self
(if (check-collision-self)
(setq gameover 1))
;; Check collision border
(if (or (<= (car (car player-body)) 2)
(>= (car (car player-body)) 31)
(<= (cadr (car player-body)) 1)
(>= (cadr (car player-body)) 22))
(setq gameover 1))
;; Check collision with fruit
(if (is-tile-equal? (car player-body) fruit-tile)
(begin
(push-new-tile)
(setq fruit-tile (list (randi-range 3 30) (randi-range 2 21)))))
)
(defun update (dt)
(process-input)
(setq frame-timer (+ frame-timer dt))
(if (and (not gameover) (> frame-timer frame-timer-duration))
(process-frame))
)
(defun draw ()
(mapcar (lambda (tile)
(draw-snake-tile tile))
player-body)
(mapcar (lambda (i)
(draw-vertical-line (list 2 i))
(draw-vertical-line (list 31 i)))
(range 2 22))
(mapcar (lambda (i)
(draw-horizontal-line (list i 1))
(draw-horizontal-line (list i 22)))
(range 3 31))
(draw-corner-tl (list 2 1))
(draw-corner-tr (list 31 1))
(draw-corner-bl (list 2 22))
(draw-corner-br (list 31 22))
(draw-fruit fruit-tile)
)
|
