pong/game.web.js at master · estuardolh/pong · 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
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
var pad1, pad2, ball;
var player1_score = 0, player2_score = 0;
var paused = true;

var WIDTH = 120;
var counter_blink = 11;

var level_text = "Level 1";
var level = 1;
var level_elapsed = 0;

load();

document.onkeydown = key_down

var KEY_UP = 38, KEY_DOWN = 40;
var KEY_W = 87, KEY_S = 83;
var KEY_ENTER = 13;

function key_down(key){
	key = key || window.event;

	var friction_y = 0.9, vy = 100;

	pad1.fy = friction_y;
	pad2.fy = friction_y;

	if ( key.keyCode == KEY_W ){
		pad1.vy = - vy;
	}else if( key.keyCode == KEY_S ){
		pad1.vy = vy;
	}

	if( key.keyCode == KEY_UP ){
		pad2.vy = - vy;
	}else if( key.keyCode == KEY_DOWN ){
		pad2.vy = vy;
	}

	if( key.keyCode == KEY_ENTER ){
		paused = !paused;
	}
}

function load(){
	ascwar.setNeutral("-");
	ascwar.clearScreen();

	// left
	pad1 = new Square(4, 1);
	pad1.setSize(2, 12);
	pad1.draw();

	// right
	pad2 = new Square(114, 1);
	pad2.setSize(2, 12);
	pad2.draw();

	// ball
	ball = new Circle(parseInt(WIDTH/2), 10);
	ball.setRadius(3);
	ball.draw();
	ball.vx = 60;
	ball.vy = 40;
}

function new_ball(right){
	if( right == true ){
		ball.vx = Math.abs(ball.vx);
	}else if( right == false ){
		ball.vx = -Math.abs(ball.vx);
	}
}

ascwar.update = function(dt){
	if( paused == false){
		// keep inside the ball
		var ball_y = ball.y + ball.radius;
		var ball_x = ball.x + ball.radius;

		var dy = 5;

		if( ball_y > 0 && ball_y > 24 + ball.radius
			|| ball_y < dy ){
			ball.vy = -1 * ball.vy;
		}
		if( ball_x > 0 && ball_x > 118 + ball.radius
			|| ball.x < 0 + ball.radius ){
			ball.vx  = -1 * ball.vx;
		}

		// detect ball collide
		if( ball.x - ball.radius <= pad1.x ){
			if( ball.y > pad1.y && ball.y < pad1.y + pad1.height ){
				ball.vx = -1 * ball.vx;

				console.log("nice player 1");
			}else{
				new_ball(true);
				player2_score ++;
			}
		}

		if( ball.x >= pad2.x ){
			if( ball.y > pad2.y && ball.y < pad2.y + pad2.height ){
				ball.vx = -1 * ball.vx;

				console.log("nice player 2");
			}else{
				new_ball(false);
				player1_score ++;
			}
		}

		// display level
		level_elapsed += 0.2;
		if( level_elapsed > 100 ){
			level ++;
			ball.vy = ball.vy * 1.2;
			ball.vx = ball.vx * 1.2;

			level_elapsed = 0;
			level_text = "";
		}
		if ( level_elapsed < 20 ){
			level_text = "Level "+ level;
		}

		pad1.update();
		pad2.update();
		ball.update();
	}
}

ascwar.draw = function(dt){
	ascwar.clearScreen();

	pad1.draw();
	pad2.draw();
	ball.draw();

	ascwar.text(26, 1, " Player 1: " + player1_score + " ", "#");
	ascwar.text(74, 1, " Player 2: " + player2_score + " ", "#");

	ascwar.text(56, 1, level_text, "#");

	var starts = 10;
	var ends = 80;

	if (paused == true){
		if( counter_blink > starts && counter_blink < ends ){
			var x = 48;
			ascwar.text(x, 8, "     Press Enter to      ", "#");
			ascwar.text(x, 9, "                         ", "#");
			ascwar.text(x, 10, " +--  -+-   +   +-   -+- ");
			ascwar.text(x, 11, " |     |   / \\  | \\   |  ");
			ascwar.text(x, 12, " +-+   |   +-+  ++`   |  ");
			ascwar.text(x, 13, "   |   |   | |  | |   |  ");
			ascwar.text(x, 14, " --+   |   | |  | |   |  ");
		}else if(counter_blink > ends ){
			counter_blink = 0;
		}
		counter_blink++;
	}

}

console.log("loaded");