2 - If Statements

Curious about 2 - If Statements 😎

🧠 Making Decisions with if Statements

In Robocode, if statements help your bot make smart decisions. You can use if, else if, and else to control how your bot acts in different battle situations.

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✅ if by itself

Use a single if when there’s one thing you want to check.

if (getEnergy() < 10) {
    back(100);  // run away when energy is low
}

If the bot’s energy is below 10, it runs away.

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🔀 if and else

If there’s a choice between two paths, use if and else:

if (getGunHeat() == 0) {
    fire(1);  // Gun is ready, fire!
} else {
    forward(20);  // Otherwise, move forward instead
}

This means “If I can shoot, shoot. Otherwise, advance.”

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🧩 if, else if, and else

Use else if to check more than one possibility:

if (getEnergy() < 20) {
    back(50);
} else if (getGunHeat() == 0 && getEnemyCount() > 1) {
    fire(3);  // Fire stronger if there are multiple bots
} else {
    forward(30);
}

This lets you react to different situations based on energy, gun heat, and number of enemies.

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🎯 Example: Checking enemy position

You can remember enemy data from the last ScannedBotEvent:

private double lastEnemyDistance = 1000;
 
@Override
public void onScannedBot(ScannedBotEvent e) {
    lastEnemyDistance = e.getX();  // Example use: store enemy's x-pos for logic
 
    if (lastEnemyDistance < 200) {
        fire(2);
    } else {
        turnGunRight(20);  // Sweep gun if enemy is far
    }
}

You’ll need to track enemy data manually in your bot.

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🚨 Defensive Mode Example

if (getHitWallEvent() != null) {
    back(50);
} else if (getHitByBulletEvent() != null) {
    turnLeft(45);
    forward(100);
}

Your bot turns away and moves if it’s hit.

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🕵️‍♂️ Checking Gun Heat

if (getGunHeat() == 0) {
    fire(1);
}

Never try to fire if your gun is too hot.

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Tips

• Always start with the most important check first.
• Use {} to group multiple lines of code.
• Keep conditions simple and readable.

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