fix: change canvas drawing

pom.xml

@@ -3,7 +3,7 @@
 	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>vsb-cs-java1</groupId>
-	<artifactId>lab02</artifactId>
+	<artifactId>lab03</artifactId>
 	<version>0.0.1-SNAPHOST</version>
 	<packaging>jar</packaging>
 	<properties>
@@ -22,26 +22,36 @@
 			<artifactId>javafx-fxml</artifactId>
 			<version>23</version>
 		</dependency>
-		<!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-api -->
+		<!--
+		https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-api -->
 		<dependency>
 			<groupId>org.junit.jupiter</groupId>
 			<artifactId>junit-jupiter-api</artifactId>
 			<version>5.11.0</version>
 			<scope>test</scope>
 		</dependency>
-		<!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-engine -->
+		<!--
+		https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-engine -->
 		<dependency>
 			<groupId>org.junit.jupiter</groupId>
 			<artifactId>junit-jupiter-engine</artifactId>
 			<version>5.11.0</version>
 			<scope>test</scope>
 		</dependency>
-		<!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-params -->
+		<!--
+		https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-params -->
 		<dependency>
 			<groupId>org.junit.jupiter</groupId>
 			<artifactId>junit-jupiter-params</artifactId>
 			<version>5.11.0</version>
 			<scope>test</scope>
 		</dependency>
+		<!-- https://mvnrepository.com/artifact/org.reflections/reflections -->
+		<dependency>
+			<groupId>org.reflections</groupId>
+			<artifactId>reflections</artifactId>
+			<version>0.10.2</version>
+			<scope>test</scope>
+		</dependency>
 	</dependencies>
 </project>

src/main/java/lab/Cannon.java

@@ -13,7 +13,7 @@ public class Cannon {
 	private final World world;
 	private Point2D position;
 	private double angle;
-	private double angleDelta = 25;
+	private double angleDelta = -25;
 
 	public Cannon(World world, Point2D position, double angle) {
 		this.world = world;
@@ -32,7 +32,7 @@ public class Cannon {
 	public void simulate(double deltaT) {
 		// do nothing yet
 		angle += angleDelta * deltaT;
-		if (angle >= 90 || angle <= 0) {
+		if (angle >= 0 || angle <= -90) {
 			angleDelta = -angleDelta;
 		}
 	}

src/main/java/lab/World.java

@@ -7,27 +7,24 @@ public class World {
 
 	private final double width;
 
-	private final double hight;
+	private final double height;
 
 	private final Bullet bullet;
 	private final BulletAnimated bullet2;
 	private final Cannon cannon;
 
-	public World(double width, double hight) {
+	public World(double width, double height) {
 		this.width = width;
-		this.hight = hight;
-		bullet = new Bullet(this, new Point2D(0, 0), new Point2D(30, 30), new Point2D(0, -9.81));
-		bullet2 = new BulletAnimated(this, new Point2D(0, 0), new Point2D(30, 70), new Point2D(0, -9.81));
-		cannon = new Cannon(this, new Point2D(0, 0), 45);
+		this.height = height;
+		bullet = new Bullet(this, new Point2D(0, height), new Point2D(30, -30), new Point2D(0, 9.81));
+		bullet2 = new BulletAnimated(this, new Point2D(0, height), new Point2D(50, -80), new Point2D(0, 9.81));
+		cannon = new Cannon(this, new Point2D(0, height-20), -45);
 	}
 
 	public void draw(GraphicsContext gc) {
-		gc.clearRect(0, 0, width, hight);
+		gc.clearRect(0, 0, width, height);
 
 		gc.save();
-		// Change coordinate system to human like
-		gc.scale(1, -1);
-		gc.translate(0, -hight);
 		bullet.draw(gc);
 		bullet2.draw(gc);
 		cannon.draw(gc);
@@ -39,4 +36,13 @@ public class World {
 		bullet2.simulate(deltaT);
 		cannon.simulate(deltaT);
 	}
+
+	public double getWidth() {
+		return width;
+	}
+
+	public double getHeight() {
+		return height;
+	}
+	
 }
\ No newline at end of file