/*
* Pew-Pew
* Copyright (C) 2019 Frostin
*
* This file is part of Pew-Pew.
*
* Pew-Pew is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Pew-Pew is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Pew-Pew. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file Class to handle sprite sheets. */
class SpriteSheet {
/**
* @param {HTMLImageElement} image Sprite sheet.
* @param {number} spriteSize Source sprite size(x = y).
*/
constructor(image, spriteSize) {
this.image = image;
this.spriteSize = spriteSize;
this.sprites = [];
}
/**
* @typedef {Object} sprite
* @property {string} name
* @property {number} x
* @property {number} y
*/
/**
* Add sprite from the sheet.
* Name must be unique.
* @param {sprite} sprite
*/
addSprite(sprite) {
this.sprites.push({
name: sprite.name,
x: sprite.x,
y: sprite.y,
});
}
/**
* Add Sprites in bulk.
* @param {string[]} names
* @param {number} rows
* @param {number} columns
*/
addSpriteBulk(names, rows, columns) {
if (rows * columns === names.length) {
let index = 0;
for (let i = 0; i < rows; i++) {
for (let j = 0; j < columns; j++) {
this.addSprite({
name: names[index++],
x: j * this.spriteSize,
y: i * this.spriteSize,
});
}
}
}
}
/**
* Get the position for sprite.
* @param {string} name Sprite name.
* @return {sprite|undefined}
*/
getSprite(name) {
for (const S of this.sprites) {
if (S.name === name) {
return S;
}
}
}
/**
* Get the position for sprite.
* @param {string} name Sprite name.
* @return {Position}
*/
getSpritePosition(name) {
for (const S of this.sprites) {
if (S.name === name) {
return new Position(S.x, S.y);
}
}
}
}