package catalystsurvival.entity;

import catalystsurvival.display.Camera;
import catalystsurvival.util.gl.GlHelpers;
import catalystsurvival.util.gl.texture.TextureReference;
import catalystsurvival.util.math.ItemStack;
import catalystsurvival.util.math.random.RandomHelpers;
import catalystsurvival.util.math.vec.Vec2d;
import catalystsurvival.world.chunk.Chunk;
import catalystsurvival.world.layer.Layer;

public class EntityItem extends EntityVertical
{
	private ItemStack stack;
	private double height = 0;
	private double height_speed;
	private int pickup_time = 100;
	
	public EntityItem(Vec2d pos, ItemStack stack) {
		super(pos, stack.item.texture, new Vec2d(0.5, 0.5));
		
		this.opaqueTile = true;
		this.stack = stack;
		this.angle = RandomHelpers.randrange(rand, 360);
		height_speed = RandomHelpers.randrange(rand, 10000) / 200000.0;
	}
	
	@Override
	public void tick(Chunk chunk, Layer layer) {
		super.tick(chunk, layer);
		
		height += height_speed;
		height_speed -= 0.001;
		
		pickup_time -= 1;
		if(pickup_time < 0) {
			pickup_time = 0;
		}
		
		if(height <= 0) {
			height_speed = 0;
		}
		
		else {
			moveForward(0.01);
		}
		
		if(pickup_time == 0)
		{
			for(Entity e : layer.getNearbyEntities(pos, 1))
			{
				if(e instanceof EntityInventory)
				{
					// Pick the stack up if its an inventory
					stack.item.onPickedUp(stack, layer, chunk, e);
				}
			}
		}
		
		// Kill this entity if the stack is empty
		if(stack.isEmpty()) {
			kill();
			return;
		}
	}
	
	@Override
	public void render(Vec2d pos, Camera camera, TextureReference tex, Vec2d size) {
		GlHelpers.pushMatrix();
		GlHelpers.translate3(0, 0, height);
		super.render(pos, camera, tex, size);
		GlHelpers.popMatrix();
	}
}