Running the Client in the IDE

IntelliJ

1. Set src->main->java folder as sources root.

2. Create Java Application in run Configuration name it "Client"

3. Set the Main Class to "mcp.client.Start"

4. Set VM options to "-Xincgc -Xmx2048M -Xms2048M" (you can modify the ram if you want).

5. Set the Working dir to a new folder for Minecraft to run, preferably in the root of the project named "runclient" (also if you want to copy Minecraft assets to this folder, do it, this will fix the no sound problem)

6. Set use classpath of module to "modern-mcp_main"

7. Click OK