Extract required textures from models instead

This ensures we will not get missing texture errors in the future, and
allows resource pack artists to use additional textures.

src/main/java/dan200/computercraft/client/proxy/CCTurtleProxyClient.java

@@ -20,6 +20,7 @@
import net.minecraft.client.renderer.block.model.ModelBakery;
import net.minecraft.client.renderer.block.model.ModelResourceLocation;
import net.minecraft.client.renderer.color.IItemColor;
import net.minecraft.client.renderer.texture.TextureMap;
import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
import net.minecraft.client.resources.IResourceManager;
import net.minecraft.client.resources.SimpleReloadableResourceManager;
@@ -115,8 +116,23 @@ private void registerForgeHandlers()
        MinecraftForge.EVENT_BUS.register( handlers );
    }

    public class ForgeHandlers
    public static class ForgeHandlers
    {
        private static final String[] TURTLE_UPGRADES = {
            "turtle_modem_off_left",
            "turtle_modem_on_left",
            "turtle_modem_off_right",
            "turtle_modem_on_right",
            "turtle_crafting_table_left",
            "turtle_crafting_table_right",
            "advanced_turtle_modem_off_left",
            "advanced_turtle_modem_on_left",
            "advanced_turtle_modem_off_right",
            "advanced_turtle_modem_on_right",
            "turtle_speaker_upgrade_left",
            "turtle_speaker_upgrade_right",
        };

        private TurtleSmartItemModel m_turtleSmartItemModel;

        public ForgeHandlers()
@@ -142,25 +158,27 @@ public void onTick( TickEvent.ClientTickEvent event )
        @SubscribeEvent
        public void onTextureStitchEvent( TextureStitchEvent.Pre event )
        {
            event.getMap().registerSprite( new ResourceLocation( "computercraft", "blocks/crafty_upgrade" ) );
            event.getMap().registerSprite( new ResourceLocation( "computercraft", "blocks/turtle_speaker_face" ) );
            // Load all textures for upgrades
            TextureMap map = event.getMap();
            for( String upgrade : TURTLE_UPGRADES )
            {
                IModel model = ModelLoaderRegistry.getModelOrMissing( new ResourceLocation( "computercraft", "block/" + upgrade ) );
                for( ResourceLocation texture : model.getTextures() )
                {
                    map.registerSprite( texture );
                }
            }
        }

        @SubscribeEvent
        public void onModelBakeEvent( ModelBakeEvent event )
        {
            loadModel( event, "turtle_modem_off_left" );
            loadModel( event, "turtle_modem_on_left" );
            loadModel( event, "turtle_modem_off_right" );
            loadModel( event, "turtle_modem_on_right" );
            loadModel( event, "turtle_crafting_table_left" );
            loadModel( event, "turtle_crafting_table_right" );
            loadModel( event, "advanced_turtle_modem_off_left" );
            loadModel( event, "advanced_turtle_modem_on_left" );
            loadModel( event, "advanced_turtle_modem_off_right" );
            loadModel( event, "advanced_turtle_modem_on_right" );
            loadModel( event, "turtle_speaker_upgrade_left" );
            loadModel( event, "turtle_speaker_upgrade_right" );
            // Load all upgrade models
            for( String upgrade : TURTLE_UPGRADES )
            {
                loadModel( event, upgrade );
            }

            loadSmartModel( event, "turtle_dynamic", m_turtleSmartItemModel );
        }