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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <title>Document</title>
- <script>
- document.addEventListener("DOMContentLoaded", function(event){
- var canvas = document.getElementById("canvasId");
- var canvasId = canvas.getContext("2d");
- function mouse_player1(evt){
- var rect = canvas.getBoundingClientRect(); // взима позицията на платното в документа, в случай, че то не започва от горния ляв ъгъл
- var mouseX = evt.clientX - rect.left; // позицията на курсора по хоризонтала
- var mouseY = evt.clientY - rect.top; // позиията на курсора по вертикала
- return {
- cursor_x: mouseX,
- cursor_y: mouseY,
- } // фунцкията връша два параметъра, cursor_x и cursor_y
- }
- canvas.addEventListener("mousemove", function(evt){
- var mouse = mouse_player1(evt);
- userX = mouse.cursor_x - sizeX/2;
- // draw()
- });
- var fps = 30;
- setInterval(execute, 1000/fps);
- function execute(){
- move();
- draw();
- }
- function move(){
- x += stepX;
- y += stepY;
- if(x>= cW - radius){
- stepX = -stepX;
- }
- if(y>= cH - radius - sizeY){
- if(userX < x + radius && x - radius < userX + sizeX){
- stepY = -stepY;
- } else {
- // alert("Game Over");
- x = parseInt(radius + Math.random()*100);
- y = 50;
- }
- }
- if(y<= 0 + radius){
- if(y<= 0 + radius + pcSizeY){
- if( pcX < x + radius && x - radius < pcX + pcSizeX ){
- pcSizeY = -pcSizeY;
- }
- }
- stepY = -stepY;
- }
- if(x<= 0 + radius){
- stepX = -stepX;
- }
- }
- function draw(){
- canvasId.fillStyle = "black";
- canvasId.fillRect(0, 0, canvas.width, canvas.height);
- canvasId.fillStyle = "green";
- canvasId.beginPath();
- canvasId.arc(x, y, radius, 0, Math.PI*2);
- canvasId.fill();
- canvasId.fillStyle = "white";
- canvasId.fillRect(userX, userY, sizeX, sizeY);
- canvasId.fillRect(pcX, pcY, pcSizeX, pcSizeY);
- }
- });
- var x = 50;
- var y = 50;
- var cW = 1000;
- var cH = 500;
- var radius = 20;
- var stepX = 10;
- var stepY = 12;
- var sizeX = 100;
- var sizeY = 20;
- var userX = cW/2 - sizeX/2;
- var userY = cH - sizeY;
- var pcSizeX = 100, pcSizeY = 20;
- var pcX = cW - pcSizeX - 200, pcY = 0;
- </script>
- <style type="text/css">
- #canvasId{
- background: black;
- }
- </style>
- </head>
- <canvas id="canvasId" width="1000" height="500"></canvas>
- <body>
- </body>
- </html>
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