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Entity Manager module for the CodinGame engine toolkit. Simplify the management of shapes and drawings.

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package com.codingame.gameengine.module.entities;

import java.util.stream.IntStream;

import com.google.inject.Inject;

/**
 * Utility to load an image containing several subimages displayed in sequential rectangles.
 * 

* Will extract each separate image and return generated names that can be used to create a Sprite or SpriteAnimation *

* */ public class SpriteSheetSplitter { private String name; private String sourceImage; private Integer width = 0; // 0 means take full width of spritesheet private Integer height = 0; // 0 means take full height of spritesheet private Integer origRow; private Integer origCol; private Integer imageCount; private int imagesPerRow = 0; // 0 means no wrap private final GraphicEntityModule graphicEntityModule; /** * The constructor expected to be called by Guice. Use GraphicEntityModule.createSpriteSheetSplitter() to instantiate * * @param graphicEntityModule * the singleton to be injected */ @Inject public SpriteSheetSplitter(GraphicEntityModule graphicEntityModule) { this.graphicEntityModule = graphicEntityModule; } /** * Returns the prefix of all subimage names * @return the prefix of all subimage names */ public String getName() { return name; } /** * Returns the image from which subimages will be extracted * @return the image from which subimages will be extracted */ public String getSourceImage() { return sourceImage; } /** * Returns the width of subimages * @return the width of subimages */ public int getWidth() { return width; } /** * Returns the height of subimages * @return the height of subimages */ public int getHeight() { return height; } /** * Returns from which row of subimages to start extracting subimages * @return from which row of subimages to start extracting subimages */ public int getOrigRow() { return origRow; } /** * Returns from which column of subimages to start extracting subimages * @return from which column of subimages to start extracting subimages */ public int getOrigCol() { return origCol; } /** * Returns number of subimages to extract * @return number of subimages to extract */ public int getImageCount() { return imageCount; } /** * Returns number of subimages to extract per row. Extraction will continue at origCol on the next row. * @return number of subimages to extract per row. Extraction will continue at origCol on the next row. */ public int getImagesPerRow() { return imagesPerRow; } /** * Sets the prefix of all subimage names. * @param name the prefix of all subimages * @return this SpriteSheetSplitter */ public SpriteSheetSplitter setName(String name) { this.name = name; return this; } /** * Sets the image from which to extract subimages * @param sourceImage the image from which to extract subimages * @return this SpriteSheetSplitter */ public SpriteSheetSplitter setSourceImage(String sourceImage) { this.sourceImage = sourceImage; return this; } /** * Sets the width of the subimages to extract * Defaults to full width of spritesheet if not set * @param width the width of the subimages * @return this SpriteSheetSplitter */ public SpriteSheetSplitter setWidth(int width) { if (width <= 0) { throw new IllegalStateException("invalid width"); } this.width = width; return this; } /** * Sets the height of the subimages to extract * Defaults to full height of spritesheet if not set * @param height the height of the subimages * @return this SpriteSheetSplitter */ public SpriteSheetSplitter setHeight(int height) { if (height <= 0) { throw new IllegalStateException("invalid height"); } this.height = height; return this; } /** * Sets the row of subimages from which subimages start being extracting * @param origRow the row of subimages from which subimages start being extracting * @return this SpriteSheetSplitter */ public SpriteSheetSplitter setOrigRow(int origRow) { this.origRow = origRow; return this; } /** * Sets the column of subimages from which subimages start being extracting * @param origCol the column of subimages from which subimages start being extracting * @return this SpriteSheetSplitter */ public SpriteSheetSplitter setOrigCol(int origCol) { this.origCol = origCol; return this; } /** * Sets the number of subimages to be extracted * @param imageCount the number of subimages to be extracted * @return this SpriteSheetSplitter */ public SpriteSheetSplitter setImageCount(int imageCount) { this.imageCount = imageCount; return this; } /** * Sets the number of subimages to extract per row before advancing to the origColth column of the next row. * @param imagesPerRow the number of subimages to extract per row before advancing to the origColth column of the next row. * @return this SpriteSheetSplitter */ public SpriteSheetSplitter setImagesPerRow(int imagesPerRow) { this.imagesPerRow = imagesPerRow; return this; } /** * Splits up a spritesheet (all fields are required except imagesPerRow). Returns an array of image names that can be used in Sprite or * SpriteAnimation. * * @return an array of image names. */ public String[] split() { if (name == null) { throw new IllegalStateException("invalid name"); } if (sourceImage == null) { throw new IllegalStateException("invalid sourceImage"); } if (imageCount == null || imageCount <= 0) { throw new IllegalStateException("invalid imageCount"); } if (origRow == null || origRow < 0) { throw new IllegalStateException("invalid origRow"); } if (origCol == null || origCol < 0) { throw new IllegalStateException("invalid origCol"); } graphicEntityModule.loadSpriteSheetSplitter(this); if (imageCount > 1) { return IntStream.range(0, imageCount).mapToObj(i -> name + i).toArray(String[]::new); } else { return new String[] { name }; } } }




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