Baked Map

gistfile1.java

public class PartSelectionManager {

	private Material[] materials;
	private int matIndex;
	private List<BoatPart>[] parts;
	private int partIndex;
	
	public PartSelectionManager add(Material material, List<BoatPart> parts){
		if(material == null || parts == null)
			return this;
		if(parts.size() < 1)
			return this;
		int index;
		if((index = CollectionHelper.find(material, materials)) != -1){
			List<BoatPart> partList = this.parts[index];
			partList.addAll(parts);
		}else{
			index = materials.length;
			this.materials = Arrays.copyOf(materials, index+1);
			this.parts = Arrays.copyOf(this.parts, index+1);
			this.materials[index] = material;
			this.parts[index] = parts;
		}
		return this;
	}
	
	public BoatPart get(){
		return this.parts[this.matIndex].get(partIndex);
	}
	
	public Material nextMaterial(){
		if(matIndex == this.materials.length - 1)
			this.matIndex = -1;
		return this.materials[++this.matIndex];
	}
	
	public BoatPart nextPart(){
		if(partIndex > this.parts[this.matIndex].size()-1)
			this.partIndex = -1;
		return this.parts[this.matIndex].get(++partIndex);
	}
	
}