How to Create a Battle Rule

Original guide by @pqr29 on Discord; heavily modified by @n123original. This guide assumes you already know how to navigate romfs and use CfgBin Editor. If not, please read the starting guide.

You will need Kuriimu2, CfgBin Editor and the latest MyTags, all of which you should have set up and be familiar with, by the end of the afformentioned starting guide.

2. Create a BattleRule

• First, we will create a Battle Rule. To do this, extract and open battle_rule_config*.cfg.bin from data/res/battle.
  • The * refers to versioning, so instead of just battle_rule_config.cfg.bin you might also see ones such as battle_rule_config_0.03g.cfg.bin. Pick the one with the highest version.
• Then duplicate BTL_RULE_INFO_2, then BTL_RULE_INFO_RULE_DATA_LIST_2.
  • You will also want to increment the ChildCount (increase it by 1) of the BTL_RULE_INFO_LIST tree.
• Next open your new BTL_RULE_INFO_* entry (this should be the last one), and create a new BtlRuleID. No template is needed.
• Finally, modify the parameters to your heart’s delight!