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
|
const canvas = document.getElementById('gameCanvas');
const ctx = canvas.getContext('2d');
canvas.style.display = "block";
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
let audio = new Audio('./zap.wav');
audio.preload = 'auto';
let audioLoaded = false;
audio.addEventListener('canplaythrough', function() {
audioLoaded = true;
});
audio.addEventListener('error', function() {
console.error('Error loading audio file');
});
const createTargets = () => {
let targets = [];
for(let i = 0; i < 10; i++) {
let shape = getRandomShape();
let radius = Math.random() * 50 + 20;
let x = Math.random() * (canvas.width - 2 * radius - 120) + radius + 60;
let y = Math.random() * (canvas.height - 2 * radius - 120) + radius + 60;
let vx = (Math.random() - 0.5) * 10;
let vy = (Math.random() - 0.5) * 10;
targets.push({x, y, vx, vy, radius, shape});
}
return targets;
}
const getRandomShape = () => {
const shapes = ['circle', 'pentagon', 'triangle', 'square'];
const randomIndex = Math.floor(Math.random() * shapes.length);
return shapes[randomIndex];
}
let score = 0;
const drawScore = () => {
ctx.font = '20px Arial';
ctx.fillStyle = 'white';
ctx.fillText('Score: ' + score, 10, 30);
};
let level = 1;
const drawLevel = () => {
ctx.font = '20px Arial';
ctx.fillStyle = 'white';
ctx.fillText('Level: ' + level, 10, 60);
}
let showHelp = false;
const drawHelp = () => {
if(showHelp) {
ctx.font = '20px Arial';
ctx.fillStyle = 'white';
ctx.fillText('Click to shoot. Press R to respawn targets. Press H to toggle help text.', 10, 50);
}
}
const drawLine = (line) => {
if (line && Date.now() - line.time < 500) {
ctx.beginPath();
ctx.moveTo(line.startX, line.startY);
ctx.lineTo(line.endX, line.endY);
ctx.strokeStyle = 'red';
ctx.lineWidth = 4;
ctx.stroke();
}
};
const colors = ['#FF0000', '#00FF00', '#0000FF', '#FFFF00', '#FF00FF', '#00FFFF'];
const drawTargets = (targets) => {
for (let target of targets) {
target.x += target.vx;
target.y += target.vy;
if (target.x - target.radius < 0 || target.x + target.radius > canvas.width) {
target.vx = -target.vx;
}
if (target.y - target.radius < 0 || target.y + target.radius > canvas.height) {
target.vy = -target.vy;
}
ctx.beginPath();
if (target.shape === 'circle') {
ctx.arc(target.x, target.y, target.radius, 0, Math.PI * 2);
} else if (target.shape === 'pentagon') {
ctx.moveTo(target.x + target.radius * Math.cos(0), target.y + target.radius * Math.sin(0));
for (let i = 1; i <= 5; i++) {
ctx.lineTo(target.x + target.radius * Math.cos(i * (Math.PI * 2) / 5), target.y + target.radius * Math.sin(i * (Math.PI * 2) / 5));
}
} else if (target.shape === 'triangle') {
ctx.moveTo(target.x + target.radius * Math.cos(0), target.y + target.radius * Math.sin(0));
for (let i = 1; i <= 3; i++) {
ctx.lineTo(target.x + target.radius * Math.cos(i * (Math.PI * 2) / 3), target.y + target.radius * Math.sin(i * (Math.PI * 2) / 3));
}
} else if (target.shape === 'square') {
ctx.rect(target.x - target.radius, target.y - target.radius, target.radius * 2, target.radius * 2);
}
const randomColor = colors[Math.floor(Math.random() * colors.length)];
ctx.fillStyle = randomColor;
ctx.fill();
}
};
const gameLoop = () => {
ctx.clearRect(0, 0, canvas.width, canvas.height);
drawScore();
drawLevel();
drawHelp();
drawLine(line);
drawTargets(targets);
requestAnimationFrame(gameLoop);
if (targets.length === 0) {
level++;
targets = createTargets();
}
};
let line = null;
const handleInteraction = (e) => {
const rect = canvas.getBoundingClientRect();
const x = e.clientX - rect.left;
const y = e.clientY - rect.top;
if (audioLoaded) {
audio.play().catch((error) => {
console.error('Error playing audio:', error);
});
}
line = {
startX: 0,
startY: canvas.height,
endX: x,
endY: y,
time: Date.now()
};
targets = targets.filter((target) => {
const dx = target.x - x;
const dy = target.y - y;
if (dx * dx + dy * dy <= target.radius * target.radius) {
score++;
return false;
}
return true;
});
};
canvas.addEventListener('click', handleInteraction);
canvas.addEventListener('touchstart', function(e) {
// Prevent the window from scrolling
e.preventDefault();
// A touch event can have multiple touches so we just get the first one
e.clientX = e.touches[0].clientX;
e.clientY = e.touches[0].clientY;
handleInteraction(e);
}, { passive: false });
window.addEventListener('resize', () => {
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
});
window.addEventListener('keydown', (e) => {
if (e.key === 'r' || e.key === 'R') {
targets = createTargets();
}
});
window.addEventListener('keydown', (e) => {
if (e.key === 'h' || e.key === 'H') {
showHelp = !showHelp;
} else if (e.key === 'r' || e.key === 'R') {
targets = createTargets();
}
});
let targets = createTargets();
gameLoop();
|