Method ok_if_javelin_unlocked

battlecode-engine/src/unit.rs:712–716

Ok if the unit can javelin. InappropriateUnitType - the unit is not a knight. ResearchNotUnlocked - the required technology is not unlocked.

(&self)

    /// * InappropriateUnitType - the unit is not a knight.
    /// * ResearchNotUnlocked - the required technology is not unlocked.
    pub(crate) fn ok_if_javelin_unlocked(&self) -> Result<(), GameError> {
        self.ok_if_unit_type(Knight)?;
        self.ok_if_ability_unlocked()?;
        Ok(())
    }

    /// Updates the unit as if it has javelined, and returns the damage done.
    pub(crate) fn javelin(&mut self) -> i32 {