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81 lines
2.6 KiB
JavaScript
81 lines
2.6 KiB
JavaScript
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const app = new PIXI.Application({ transparent: true, width: innerWidth, height: innerHeight});
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document.body.appendChild(app.view);
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// holder to store the aliens
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const aliens = [];
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const totalDudes = 25;
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for (let i = 0; i < totalDudes; i++) {
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// create a new Sprite that uses the image name that we just generated as its source
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const dude = PIXI.Sprite.from('../assets/simpleShapes.png');
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// set the anchor point so the texture is centerd on the sprite
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// dude.anchor.set();
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// set a random scale for the dude - no point them all being the same size!
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dude.scale.set( 0.03 + Math.random() * 0.8);
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// finally lets set the dude to be at a random position..
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dude.x = Math.random() * app.screen.width;
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dude.y = Math.random() * app.screen.height;
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// dude.tint = 0xFF00FF;
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// create some extra properties that will control movement :
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// create a random direction in radians. This is a number between 0 and PI*2 which is the equivalent of 0 - 360 degrees
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dude.direction = Math.random() * Math.PI * 2;
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// this number will be used to modify the direction of the dude over time
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dude.turningSpeed = Math.random() ;
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// create a random speed for the dude between 2 - 4
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dude.speed = 2 + Math.random();
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// finally we push the dude into the aliens array so it it can be easily accessed later
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aliens.push(dude);
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app.stage.addChild(dude);
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}
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// create a bounding box for the little dudes
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const dudeBoundsPadding = 1;
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const dudeBounds = new PIXI.Rectangle(-dudeBoundsPadding,
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-dudeBoundsPadding,
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app.screen.width + dudeBoundsPadding * 2,
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app.screen.height + dudeBoundsPadding * 5);
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app.ticker.add(() => {
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// iterate through the dudes and update their position
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for (let i = 0; i < aliens.length; i++) {
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const dude = aliens[i];
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dude.direction += dude.turningSpeed * 0.03;
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dude.x += Math.sin(dude.direction) * dude.direction;
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dude.y += Math.cos(dude.direction) * dude.speed *0.2;
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dude.rotation = dude.direction - Math.PI * 0.3;
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// wrap the dudes by testing their bounds...
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if (dude.x < dudeBounds.x) {
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dude.x += dudeBounds.width;
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} else if (dude.x > dudeBounds.x + dudeBounds.width) {
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dude.x -= dudeBounds.width;
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}
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// if (dude.y < dudeBounds.y) {
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// dude.y += dudeBounds.height;
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// } else if (dude.y > dudeBounds.y + dudeBounds.height) {
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// dude.y -= dudeBounds.height;
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// }
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}
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});
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const style = new PIXI.TextStyle({
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fill: [
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"#00f900",
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"#00f900"
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],
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fontFamily: "Arial Black"
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});
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const text = new PIXI.Text('QUESTO E\' LA PROVA', style);
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