Hi,

 

i'm trying to create a custom FilledMapItem which are filled with one color.

When I had one map (white) everything worked fine. The problem is that after creating a second map both maps appear the same and are flickering with white and black colors.

I don't know where else to search for help with this

 

package com.example.examplemod;

import net.minecraft.block.material.MaterialColor;
import net.minecraft.entity.Entity;
import net.minecraft.item.FilledMapItem;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.world.World;
import net.minecraft.world.dimension.DimensionType;
import net.minecraft.world.storage.MapData;

public class ModImageMapItem extends FilledMapItem {
   public ModImageMapItem(Item.Properties builder) {
	      super(builder);
   }

   protected MapData getCustomMapData(ItemStack stack, World worldIn) {
      MapData mapdata = func_219994_a(stack, worldIn);
      if (mapdata == null && !worldIn.isRemote) {
         mapdata = createMapData(stack, worldIn, worldIn.getWorldInfo().getSpawnX(), worldIn.getWorldInfo().getSpawnZ(), 3, false, false, worldIn.dimension.getType());
      }

      drawMyMap(worldIn, null, mapdata, this);      
      return mapdata;
   }

   private static MapData createMapData(ItemStack p_195951_0_, World p_195951_1_, int p_195951_2_, int p_195951_3_, int p_195951_4_, boolean p_195951_5_, boolean p_195951_6_, DimensionType p_195951_7_) {
      int i = p_195951_1_.getNextMapId();
      MapData mapdata = new MapData(func_219993_a(i));
      mapdata.func_212440_a(p_195951_2_, p_195951_3_, p_195951_4_, p_195951_5_, p_195951_6_, p_195951_7_);
      p_195951_1_.func_217399_a(mapdata);
      p_195951_0_.getOrCreateTag().putInt("map", i);
      
      return mapdata;
   }

   public void updateMapData(World worldIn, Entity viewer, MapData mapdata) {
	   drawMyMap(worldIn, viewer, mapdata, this);
   }
   
   private static void drawMyMap(World worldIn, Entity viewer, MapData mapdata, ModImageMapItem item) {
	  byte bColor = 0;
	  
      if (item.getName().toString().contains("item.poison64.image_map_white")) {
	      bColor = (byte)(MaterialColor.SNOW.colorIndex*4+2); 
      } else if (item.getName().toString().contains("item.poison64.image_map_black")) {
	      bColor = (byte)(MaterialColor.BLACK.colorIndex*4+2);  
      }

	   for(int x=0;x<128;x++) {
	      for(int y=0;y<128;y++) {
	    	  mapdata.colors[y*128+x] = bColor;  
	    	  mapdata.updateMapData(x, y);
	      }
      }
      mapdata.mapDecorations.clear();
      mapdata.trackingPosition = false;
      mapdata.markDirty();
   }
}

 

   new ModImageMapItem(new Item.Properties().group(ItemGroup.MISC).rarity(Rarity.RARE)).setRegistryName("poison64", "image_map_white"),
   new ModImageMapItem(new Item.Properties().group(ItemGroup.MISC).rarity(Rarity.RARE)).setRegistryName("poison64", "image_map_black")

 

Thanks in advance,

poison64

Edited November 2, 20196 yr by poison64

49 minutes ago, poison64 said:

item.getName().toString().contains("item.poison64.image_map_white")

This is not good code, but this isn't the source of your problem. Never covert things to strings in order to compare them, it makes your code incredibly stringly typed and impossible to refactor.

1 minute ago, Draco18s said:

This is not good code, but this isn't the source of your problem. Never covert things to strings in order to compare them, it makes your code incredibly stringly typed and impossible to refactor.

I'm aware of that, it's just a proof of concept. I had enums defining type in constructor before.