/*
* 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 Utility methods for player. */
class Util {
/**
* @param {number} playerScale Player Scale.
* @param {number} barrierScale Barrier Scale.
* @param {number} size Sprite Size.
* @return {number} Size difference between barrier and player.
*/
static getBarrierPosition(playerScale, barrierScale, size) {
const DIFF = barrierScale - playerScale;
return (size * DIFF) / 2;
}
/**
* Checks if idle animation is playing.
* @param {number} state Animation state.
* @return {boolean}
*/
static isIdleAnim(state) {
if (state === 0 || state === 1) {
return true;
} else {
return false;
}
}
/**
* Decides when to go back to idle anim form fire.
* @param {boolean} fire
* @param {number} state
* @return {boolean}
*/
static exitFire(fire, state) {
if (fire && this.isIdleAnim(state)) {
return true;
} else {
return false;
}
}
/**
* drawImage() Helper.
* @param {CanvasRenderingContext2D} ctx
* @param {SpriteSheet} spriteSheet
* @param {string} spriteName
* @param {number} size
* @param {number} x
* @param {number} y
* @param {number} scale
*/
static imgDrawCall(ctx, spriteSheet, spriteName, size, x, y, scale) {
const SPRITE = spriteSheet.getSprite(spriteName);
if (SPRITE != undefined) {
ctx.drawImage(
spriteSheet.image,
SPRITE.x,
SPRITE.y,
size,
size,
x,
y,
size * scale,
size * scale
);
}
}
}