TinkersConstruct/src/tconstruct/util/EnvironmentChecks.java

package tconstruct.util;

import cpw.mods.fml.client.FMLClientHandler;
import cpw.mods.fml.common.FMLCommonHandler;
import cpw.mods.fml.common.ICrashCallable;
import cpw.mods.fml.common.Loader;
import cpw.mods.fml.relauncher.Side;
import tconstruct.TConstruct;

import java.util.ArrayList;
import java.util.List;

public class EnvironmentChecks {

    private EnvironmentChecks() {} // Singleton

    /**
     * Checks for conflicting stuff in environment; adds callable to any crash logs if so.
     */
    public static void verifyEnvironmentSanity() {
        List<String> modIds = new ArrayList<String>();

        if (Loader.isModLoaded("gregtech_addon")) {
            TConstruct.logger.severe("[Environment Checks] Gelatinous iceberg dead ahead! Entering Greggy waters! Abandon hope all ye who enter here! (No, seriously, we don't support GT. Don't report any issues. Thanks.)");
            TConstruct.logger.severe("[Environment Checks] A NOTE TO THE USER: Gregtech has been known to crash the game with Metallurgy and for certain specific 'banished' players.");
            TConstruct.logger.severe("[Environment Checks]                     For this reason, the TCon dev team urge you to seek your tedium fix from someone else, as Greg disobeys");
            TConstruct.logger.severe("[Environment Checks]                     the basic tenets of good modders conduct. We log this message rather than sabotage. We'd hope he'd do the same.");
            TConstruct.logger.severe("[Environment Checks]                     In the meantime, we recommend not playing anything but IC2 alongside Gregtech. ~ Sunstrike");
            modIds.add("gregtech_addon");
        }

        if (FMLCommonHandler.instance().getSide() == Side.CLIENT && FMLClientHandler.instance().hasOptifine()) {
            TConstruct.logger.severe("[Environment Checks] Optifine detected. This is a Bad Thing(tm) and can crash Minecraft due to an Optifine bug during TCon armor renders!");
            modIds.add("optifine");
        }

        if (modIds.size() == 0) {
            ICrashCallable callable = new CallableSuppConfig();
            FMLCommonHandler.instance().registerCrashCallable(callable);
        } else {
            ICrashCallable callable = new CallableUnsuppConfig(modIds);
            FMLCommonHandler.instance().registerCrashCallable(callable);
        }
    }

}