60 lines
1.8 KiB
JavaScript
60 lines
1.8 KiB
JavaScript
import GeometryPoint from "./geometry/GeometryPoint.js";
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export default class Camera
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{
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constructor(x = 0, y = 0, width = window.innerWidth, height = window.innerHeight)
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{
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this.position = new GeometryPoint(x, y);
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this.width = width;
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this.height = height;
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this.borderTop = 0;
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this.borderBottom = undefined;
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this.borderLeft = 0;
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this.borderRight = undefined;
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this.speedX = 0;
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this.speedY = 0;
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}
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centerCamera(x, y)
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{
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this.position.x = x - this.width * 0.5;
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this.position.y = y - this.height * 0.5;
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if (this.position.x < this.borderLeft) {
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this.position.x = this.borderLeft;
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} else if (this.borderRight !== undefined && this.position.x + this.width > this.borderRight) {
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this.position.x = this.borderRight - this.width;
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}
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if (this.position.y < this.borderTop) {
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this.position.y = this.borderTop;
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} else if (this.borderBottom !== undefined && this.position.y + this.height > this.borderBottom) {
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this.position.y = this.borderBottom - this.height;
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}
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}
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facePosition(x, y, delta, reactionSpeed = 1)
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{
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let positionX = x - this.width * 0.5;
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let positionY = y - this.height * 0.5;
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let distanceX = this.position.x - positionX;
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let distanceY = this.position.y - positionY;
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if (this.position.x !== positionX) {
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this.position.x += distanceX * delta * reactionSpeed;
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}
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if (distanceX < 0.01) {
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this.position.x = positionX;
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}
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if (this.position.y !== positionY) {
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this.position.y += distanceY * delta * reactionSpeed;
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}
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if (distanceY < 0.01) {
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this.position.y = positionY;
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}
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}
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} |