Added knife.

resources/yaml/bullet_invisible.yaml

@@ -0,0 +1,5 @@
+name: Bullet
+texture: transparent.png
+
+radius: 5
+size: [1, 1]

resources/yaml/enemy.yaml

@@ -5,6 +5,6 @@ health: 100
 speed: 100
 radius: 25
 size: [50, 50]
-first_weapon: assault_rifle.yaml
-second_weapon: pistol.yaml
+first_weapon: pistol.yaml
+second_weapon: knife.yaml
 faction: 1

resources/yaml/knife.yaml

@@ -0,0 +1,11 @@
+name: Knife
+
+bullet: bullet_invisible.yaml
+projectile_speed: 1000
+damage: 10
+fire_interval: 2000
+automatic: false
+spread: 0
+spread_moving: 0
+max_range: 50
+requires_no_ammo: true

resources/yaml/player.yaml

@@ -5,6 +5,6 @@ health: 100
 speed: 100
 radius: 25
 size: [50, 50]
-first_weapon: hmg.yaml
-second_weapon: shotgun.yaml
+first_weapon: pistol.yaml
+second_weapon: knife.yaml
 faction: 0

source/effects/Bullet.cpp

@@ -22,12 +22,14 @@
  */
 Bullet::Bullet(const sf::Vector2f& position, Character& shooter,
 	sf::Vector2f direction, const Yaml& config, float speed,
-	float damage) :
+	float damage, float maxRange) :
 		Circle(position, CATEGORY_PARTICLE, ~CATEGORY_PARTICLE,
 				config, thor::rotatedVector(direction, -90.0f)),
 		mShooter(shooter),
 		mDamage(damage),
-		mSpeed(speed) {
+		mSpeed(speed),
+		mMaxRangeSquared((maxRange == 0) ? std::numeric_limits<float>::max() : maxRange * maxRange),
+		mStartPoint(getPosition()) {
 	setSpeed(thor::rotatedVector(direction, -90.0f), mSpeed);
 }
 
@@ -37,9 +39,13 @@ Bullet::Bullet(const sf::Vector2f& position, Character& shooter,
  */
 void
 Bullet::onCollide(std::shared_ptr<Sprite> other) {
+	if (thor::squaredLength(getPosition() - mStartPoint) >= mMaxRangeSquared) {
+		setDelete(true);
+		return;
+	}
+
 	// Make sure we do not damage twice.
-	if (!getDelete() && (&*other != &mShooter)) {
-		// Call onShot on other, with damage as param.
+	if (!getDelete() && (&*other != &mShooter)) {
 		if (other->getCategory() == CATEGORY_ACTOR) {
 			std::shared_ptr<Character> character = std::static_pointer_cast<Character>(other);
 			character->onDamage(mDamage);

source/effects/Bullet.h

@@ -20,14 +20,16 @@ class Bullet : public Circle {
 public:
 	explicit Bullet(const sf::Vector2f& position, Character& shooter,
 			sf::Vector2f direction, const Yaml& config,	float speed,
-			float damage);
+			float damage, float maxRange);
 
 	void onCollide(std::shared_ptr<Sprite> other);
 
 private:
 	const Character& mShooter;
 	const int mDamage;
-	const float mSpeed;
+	const float mSpeed;
+	const float mMaxRangeSquared;
+	sf::Vector2f mStartPoint;
 };
 
 #endif /* DG_BULLET_H_ */

source/items/Weapon.cpp

@@ -31,7 +31,9 @@ Weapon::Weapon(World& world, Character& holder, const Yaml& config) :
 		mPelletSpread(config.get("pellet_spread", 0.0f)),
 		mReloadSingle(config.get("reload_single", false)),
 		mSpread(config.get("spread", 0.0f)),
-		mSpreadMoving(config.get("spread_moving", 0.0f)) {
+		mSpreadMoving(config.get("spread_moving", 0.0f)),
+		mMaxRange(config.get("max_range", 0.0f)),
+		mRequiresAmmo(!config.get("requires_no_ammo", false)) {
 }
 
 /**
@@ -80,13 +82,13 @@ Weapon::onThink(int elapsed) {
 			mIsReloading = false;
 	}
 
-	if (mFiring && mMagazineAmmo != 0) {
+	if (mFiring && (!mRequiresAmmo || mMagazineAmmo != 0)) {
 		fire();
 		if (!mAutomatic)
 			mFiring = false;
 	}
 
-	if (mMagazineAmmo == 0 && mTotalAmmo != 0)
+	if (mRequiresAmmo && mMagazineAmmo == 0 && mTotalAmmo != 0)
 		reload();
 }
 
@@ -96,7 +98,8 @@ Weapon::onThink(int elapsed) {
 void
 Weapon::fire() {
 	mTimer.restart(sf::milliseconds(mFireInterval));
-	mMagazineAmmo--;
+	if (mRequiresAmmo)
+		mMagazineAmmo--;
 
 
 	if (mPellets == 0)
@@ -155,6 +158,6 @@ Weapon::insertProjectile(float angle) {
 
 	std::shared_ptr<Sprite> projectile(new Bullet(mHolder.getPosition() + offset,
 			mHolder, direction, mProjectile, mProjectileSpeed,
-			mDamage));
+			mDamage, mMaxRange));
 	mWorld.insert(projectile);
 }

source/items/Weapon.h

@@ -60,6 +60,8 @@ private:
 	const bool mReloadSingle;
 	const float mSpread;
 	const float mSpreadMoving;
+	const float mMaxRange;
+	const float mRequiresAmmo;
 	std::default_random_engine mGenerator;
 
 };