Tanks 0.5.0 - Added Crusades, the shop, the hotbar, and 3 new tanks (…

…Cyan, Blue, Maroon), and made other various improvements

src/tanks/AreaEffect.java

@@ -0,0 +1,37 @@
+package tanks;
+
+public abstract class AreaEffect extends Movable
+{	
+	public double duration = 500;
+	public boolean constantlyImbue = true;
+	public double age = 0;
+	public double maxAge = 1000;
+
+	public AreaEffect(double x, double y)
+	{
+		super(x, y);
+		this.drawAbove = true;
+	}	
+
+	@Override
+	public void checkCollision()
+	{
+
+	}
+
+	@Override
+	public void update()
+	{
+		this.age += Panel.frameFrequency;
+
+		if (constantlyImbue)
+		{
+			this.imbueEffects();
+		}
+
+		if (this.age > this.maxAge)
+			Game.removeMovables.add(this);
+	}
+
+	public abstract void imbueEffects();
+}

src/tanks/AreaEffectFreeze.java

@@ -0,0 +1,61 @@
+package tanks;
+
+import java.awt.Color;
+import java.awt.Graphics;
+
+import tanks.AttributeModifier.Operation;
+
+public class AreaEffectFreeze extends AreaEffect
+{
+	double size = 300;
+	public AreaEffectFreeze(double x, double y)
+	{
+		super(x, y);
+		this.constantlyImbue = false;
+		this.imbueEffects();
+		this.maxAge = 600;
+	}
+
+	@Override
+	public void imbueEffects()
+	{
+		if (Game.fancyGraphics)
+		{
+			for (int i = 0; i < 200; i++)
+			{
+				Effect e = Effect.createNewEffect(this.posX, this.posY, Effect.EffectType.piece);
+				int var = 50;
+				e.col = new Color((int) Math.min(255, Math.max(0, 255 + Math.random() * var - var / 2)), (int) Math.min(255, Math.max(0, 255 + Math.random() * var - var / 2)), (int) Math.min(255, Math.max(0, 255 + Math.random() * var - var / 2)));
+				e.setPolarMotion(Math.random() * 2 * Math.PI, Math.random() * this.size / 200.0);
+				e.maxAge *= 4;
+				Game.effects.add(e);
+			}
+		}
+
+		for (int i = 0; i < Game.movables.size(); i++)
+		{
+			Movable m = Game.movables.get(i);
+
+			if (Movable.distanceBetween(this, m) <= this.size / 2)
+			{
+				AttributeModifier a = new AttributeModifier("freeze", "velocity", Operation.multiply, -1);
+				a.duration = 600;
+				a.warmupAge = 50;
+				a.deteriorationAge = 500;
+				m.attributes.add(a);
+			}
+		}
+	}
+
+	@Override
+	public void draw(Graphics g)
+	{
+		double size = Math.min(this.size + Game.tank_size / 2, this.age * 8); 
+		for (int i = (int) Math.max(0, size - ((int) (50 * Math.min(100, 600 - this.age) / 100.0))); i < size; i += 2)
+		{
+			g.setColor(new Color(200, 255, 255, 10));
+			Drawing.window.fillOval(g, this.posX, this.posY, i, i);
+		}
+	}
+
+}

src/tanks/AttributeModifier.java

@@ -0,0 +1,74 @@
+package tanks;
+
+import java.util.UUID;
+
+public class AttributeModifier
+{
+	enum Operation {add, multiply}
+
+	/**An unique name for the modifier, to prevent double effects*/
+	public String name = UUID.randomUUID().toString();
+
+	/**Duration of the Attribute Modifier, leave at 0 for indefinite duration*/
+	public double duration = 0;
+
+	/**Age at which the Attribute starts to wear off*/
+	public double deteriorationAge = 0;
+
+	/**Age at which the Attribute is at full strength*/
+	public double warmupAge = 0;
+
+	public double value;
+
+	public Operation effect;
+
+	protected double age;
+
+	public boolean expired = false;
+
+	public String type;
+
+	public AttributeModifier(String type, Operation op, double amount)
+	{
+		this.type = type;
+		this.effect = op;
+		this.value = amount;
+	}
+
+	public AttributeModifier(String name, String type, Operation op, double amount)
+	{
+		this(type, op, amount);
+		this.name = name;
+	}
+
+	public void update()
+	{
+		this.age += Panel.frameFrequency;
+
+		if (this.age > this.duration)
+			this.expired = true;
+	}
+
+	public double getValue(double in)
+	{
+		double val = 0;
+
+		if (this.expired)
+			return in;
+		else if (this.age < this.warmupAge)
+			val = this.value * this.age / this.warmupAge;
+		else if (this.age < this.deteriorationAge || this.deteriorationAge <= 0)
+			val = this.value;
+		else
+			val = this.value * (this.duration - this.age) / (this.duration - this.deteriorationAge);
+
+		if (this.effect == Operation.add)
+			return in + val;
+		else if (this.effect == Operation.multiply)
+			return in * (val + 1);
+		else
+			return in;
+
+	}
+
+}