Minesweeper/snake.html at master · KMUlee/Minesweeper · GitHub

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
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        * {padding: 0; margin: 0}
        canvas {background: #eee; display: block; margin: 0 auto}
    </style>
</head>
<body>
<canvas id="canv" width="400" height="400"></canvas>
<div id="text" align="center"></div>
<script>
    var canvas = document.getElementById("canv");
    var ctx = canvas.getContext("2d");
    var w = 20;

    var snake = [[0,1],[0,0]];
    var color = ["#eee", "#0095dd", "yellow"];
    var map = [];
    for (i = 0; i < 20; i++){
        map[i] = [];
        for (j = 0; j < 20; j++){
            map[i][j] = {x: j, y: i, s: 0};
        }
    }
    var move = [[-1,0],[0,-1],[1,0],[0,1]];
    var key = 3;
    var n_key = 3;
    var ch_key = false;
    var feed = [];
    var score = 0;

    document.addEventListener("keydown", keyDownHandler, false);
    document.addEventListener("keyup", keyUpHandler, false);

    function keyDownHandler(e) {
        ch_key = true;
    }

    function keyUpHandler(e) {
        if (ch_key && e.keyCode == 37){
            n_key = 0;
        }
        if (ch_key && e.keyCode == 38){
            n_key = 1;
        }
        if (ch_key && e.keyCode == 39){
            n_key = 2;
        }
        if (ch_key && e.keyCode == 40){
            n_key = 3;
        }
    }

    function make_map() {
        ctx.clearRect(0,0,canvas.width,canvas.height);

        for (i = 0; i < 20; i++){
            for (j = 0; j < 20; j++){
                var m = map[i][j];
                for (k = 0; k < snake.length; k++){
                    if (snake[k][0] == m.x && snake[k][1] == m.y){
                        m.s = 1;
                        break;
                    }
                    else if (feed[0] == m.x && feed[1] == m.y){
                        m.s = 2;
                    }
                    else {
                        m.s = 0;
                    }
                }
                ctx.beginPath();
                ctx.rect(m.x*w, m.y*w, w, w);
                ctx.fillStyle = color[m.s];
                ctx.fill();
                ctx.closePath();
            }
        }
        draw_main();
    }

    function s_move() {
        if (n_key - 2 != key && n_key + 2 != key){
            key = n_key;
        }
        for (i = snake.length-1; i > 0; i--){
            snake[i][0] = snake[i-1][0];
            snake[i][1] = snake[i-1][1];
        }
        snake[0][0] += move[key][0];
        snake[0][1] += move[key][1];
        if (snake[0][0] < 0 || snake[0][0] > w || snake[0][1] < 0 || snake[0][1] > w){
            document.location.reload();
            alert("Game Over!!");
        }
        for (i = 1; i < snake.length; i++){
            if (snake[0][0] == snake[i][0] && snake[0][1] == snake[i][1]){
                document.location.reload();
                alert("Game Over!!");
            }
        }
        if (snake[0][0] == feed[0] && snake[0][1] == feed[1]){
            snake.push(feed);
            score += 100;
            make_food();
            document.getElementById("text").innerText = "Score : "+score;
        }
        make_map();
    }

    function make_food() {
        var food = 0;
        var temp = 0;
        var ch = true;
        while (ch){
            food = Math.floor(Math.random()*200);
            for (i = 0; i < 20; i++){
                for (j = 0; j < 20; j++) {
                    if (map[i][j].s == 1) {
                        break;
                    }
                    else if (temp == food) {
                        feed = [j,i];
                        ch = false;
                    }
                    temp++
                }
            }
        }
    }

    function draw_main() {
        ctx.beginPath();
        for (i = 0; i < 20; i++){
            ctx.rect(i*20, 0, 2, canvas.height);
            ctx.rect(0, i*20, canvas.width, 2);
        }
        ctx.rect(0, 398, canvas.width, 2);
        ctx.rect(398, 0, 2, canvas.height);
        ctx.fillStyle = "black";
        ctx.fill();
        ctx.closePath();
    }
    document.getElementById("text").innerText = "Score : "+score;
    make_food();
    make_map();
    setInterval(s_move, 150);
</script>
</body>
</html>