chris/TrafficSim
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Add Start-Stop-Buttons, implement Threading

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This commit is contained in:
Loch Christian (uib05376) 2020-10-29 11:53:35 +01:00
parent ca1a82a9ee
commit bffcddf6e2
5 changed files with 107 additions and 19 deletions
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44
app/src/main/java/de/hems/trafficsim/MainActivity.java
View File

@ -5,6 +5,7 @@ import androidx.constraintlayout.widget.ConstraintLayout;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import java.util.Observable;
@ -14,12 +15,13 @@ public class MainActivity extends AppCompatActivity implements Observer {
protected Track track;
protected TrackView trackView;
protected Worker worker;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
this.track = new Track(20, 50);
this.track = new Track(25, 100);
this.trackView = new TrackView(this, this.track);
this.track.addObserver(this);
ConstraintLayout layout = (ConstraintLayout) findViewById(R.id.constr_layout);
@ -28,8 +30,13 @@ public class MainActivity extends AppCompatActivity implements Observer {
@Override
public void update(Observable observable, Object o) {
final Track trackRef = this.track;
final TrackView viewRef = this.trackView;
runOnUiThread(new Runnable() {
@Override
public void run() {
String s = "";
for (Vehicle v: this.track.getVehicles()){
for (Vehicle v: trackRef.getVehicles()){
s+= "Vehicle " + v.id + " | "
+ "Pos = " + v.getPosition() + " | "
+ "Vel = " + v.getCurVelocity()+ " | "
@ -39,7 +46,10 @@ public class MainActivity extends AppCompatActivity implements Observer {
TextView view = (TextView) findViewById(R.id.debugTextView);
view.setText(s);
view.invalidate();
this.trackView.invalidate();
viewRef.invalidate();
}
});
}
public void onStepButtonClick(View view) {
@ -47,4 +57,32 @@ public class MainActivity extends AppCompatActivity implements Observer {
this.track.timeElapse(50);
//}
}
public void onPlayButtonClick(View view) {
Button playButton = (Button) findViewById(R.id.playButton);
playButton.setEnabled(false);
Button stepButton = (Button) findViewById(R.id.stepButton);
stepButton.setEnabled(false);
Button stopButton = (Button) findViewById(R.id.stopButton);
stopButton.setEnabled(true);
this.worker = new Worker(track);
this.worker.start();
}
public void onStopButtonClick(View view) {
Button playButton = (Button) findViewById(R.id.playButton);
playButton.setEnabled(true);
Button stepButton = (Button) findViewById(R.id.stepButton);
stepButton.setEnabled(true);
Button stopButton = (Button) findViewById(R.id.stopButton);
stopButton.setEnabled(false);
this.worker.setStop(true);
try {
this.worker.join();
} catch (InterruptedException ex) {
}
}
}

5
app/src/main/java/de/hems/trafficsim/Track.java
View File

@ -17,14 +17,15 @@ public class Track extends Observable {
}
public Track(int numberVehicles, float trackLength) {
this.vehicles = createVehiclesList(numberVehicles);
this.trackLength = trackLength;
this.vehicles = createVehiclesList(numberVehicles);
}
protected List<Vehicle> createVehiclesList(int numberVehicles){
List<Vehicle> result = new ArrayList<>();
for(int i=0;i<numberVehicles;i++){
Vehicle vehicle = new Vehicle(i, i, 5, 0.2f);
Vehicle vehicle = new Vehicle(i, i, 5, 0.2f, this.trackLength);
result.add(vehicle);
}

6
app/src/main/java/de/hems/trafficsim/Vehicle.java
View File

@ -8,14 +8,16 @@ public class Vehicle {
protected float curVelocity;
protected float maxVelocity;
protected float brakeProp;
protected float trackLength;
public Vehicle(int id, int position, float maxVelocity, float brakeProp) {
public Vehicle(int id, int position, float maxVelocity, float brakeProp, float trackLength) {
this.id = id;
this.position = position;
this.maxVelocity = maxVelocity;
this.brakeProp = brakeProp;
this.curVelocity = 0;
this.trackLength = trackLength;
}
@ -49,7 +51,7 @@ public class Vehicle {
}
public void timeElapse(float timeStep) {
position = (position + curVelocity) % 50;
position = (position + curVelocity) % this.trackLength;
}
}

22
app/src/main/java/de/hems/trafficsim/Worker.java Normal file
View File

@ -0,0 +1,22 @@
package de.hems.trafficsim;
public class Worker extends Thread {
protected Track track;
protected boolean stop;
public Worker(Track track) {
super();
this.track = track;
this.stop = false;
}
void setStop(boolean stop) {
this.stop = stop;
}
@Override
public void run() {
while (!stop) {
this.track.timeElapse(50);
}
}
}

27
app/src/main/res/layout/activity_main.xml
View File

@ -7,6 +7,19 @@
android:layout_height="match_parent"
tools:context=".MainActivity">
<Button
android:id="@+id/stopButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:enabled="false"
android:onClick="onStopButtonClick"
android:text="Stop"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.95"
app:layout_constraintStart_toStartOf="parent" />
<TextView
android:id="@+id/debugTextView"
android:layout_width="wrap_content"
@ -23,9 +36,21 @@
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:onClick="onStepButtonClick"
android:text="Button"
android:text="Step"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent" />
<Button
android:id="@+id/playButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:onClick="onPlayButtonClick"
android:text="Play"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.049"
app:layout_constraintStart_toStartOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>