To clarify my problem, this is what I get when I play my mod on multiplayer:
Before I power the TNT with redstone (before the TNT is primed):
After I power the TNT with redstone (when the TNT is primed):
The ONLY code I used from Minecraft Forge to register this entity is MinecraftForge.registerEntity(). I don't have any other code about registering this entity except for this line:
MinecraftForge.registerEntity(net.minecraft.src.EntityAdvanceTNTPrimed.class, this, 252, 20, 2, true);
The code for the TNT is basically the same as the vanilla code for the TNT, but modified to fit my needs.
Is there something I did wrong?
P.S You may test out the mod here: http://calclavia.com/ICBM/