added function in gameView, (9450e6db) · Commits · Anish Sinha / Group5Demo

app/src/main/java/com/example/a8_bitinvader/GameView.java

+29 −0

Original line number	Diff line number	Diff line
		package com.example.a8_bitinvader;

		import android.content.Context;
		import android.view.MotionEvent;
		import android.view.SurfaceView;
		import android.graphics.Canvas;
		import android.graphics.Paint; // necessary when drawing Bitmaps with Canvas objects
		@@ -14,6 +15,10 @@ public class GameView extends SurfaceView implements Runnable{
		private Background background1, background2;
		private Paint paint;

		Joystick joystick = new Joystick(0,0,0,0);
		//undecided location


		public GameView(Context context, int screenWidth, int screenHeight) {
		super(context);

		@@ -108,4 +113,28 @@ public class GameView extends SurfaceView implements Runnable{
		}

		}

		@Override
		public boolean onTouchEvent(MotionEvent event) {
		switch(event.getAction()) {
		case MotionEvent.ACTION_DOWN:
		if(joystick.isPressed((double)event.getX(), (double)event.getY())){
		joystick.setIsPressed(true);
		}
		return true;
		case MotionEvent.ACTION_MOVE:
		if(joystick.getIsPressed()) {
		joystick.setActuator((double)event.getX(), (double)event.getY());
		}
		return true;
		case MotionEvent.ACTION_UP:
		joystick.setIsPressed(false);
		joystick.resetActuator();
		return true;
		}

		return super.onTouchEvent(event);

		}

		}
		No newline at end of file

app/src/main/java/com/example/a8_bitinvader/Joystick.java

0 → 100644

+114 −0

Original line number	Diff line number	Diff line
		package com.example.a8_bitinvader;

		import android.graphics.Canvas;
		import android.graphics.Color;
		import android.graphics.Paint;

		public class Joystick {
		private static final double MAX_SPEED = 3; //change ltr
		private int outerCircleCenterX;
		private int outerCircleCenterY;
		private int innerCircleCenterX;
		private int innerCircleCenterY;
		private int outerCircleRadii;
		private int innerCircleRadii;
		private Paint innerCirclePaint;
		private Paint outerCirclePaint;

		private double joystickCenterToTouchDistance;
		private boolean isPressed;
		private double actuatorX;
		private double actuatorY;

		private double XVelocity;
		private double YVelocity;

		public Joystick(int CenterPositionX, int CenterPositionY, int outerCircleRad, int innerCircleRad){
		outerCircleCenterX = CenterPositionX;
		outerCircleCenterY = CenterPositionY;
		innerCircleCenterX = CenterPositionX;
		innerCircleCenterY = CenterPositionY;
		outerCircleRadii = outerCircleRad;
		innerCircleRadii = innerCircleRad;

		outerCirclePaint= new Paint();
		outerCirclePaint.setColor(Color.YELLOW);
		outerCirclePaint.setStyle(Paint.Style.FILL_AND_STROKE);

		innerCirclePaint= new Paint();
		innerCirclePaint.setColor(Color.WHITE);
		innerCirclePaint.setStyle(Paint.Style.FILL_AND_STROKE);
		}

		public void draw(Canvas canvas) {
		//outer
		canvas.drawCircle(
		outerCircleCenterX,
		outerCircleCenterY,
		outerCircleRadii,
		outerCirclePaint
		);
		//inner
		canvas.drawCircle(
		innerCircleCenterX,
		innerCircleCenterY,
		innerCircleRadii,
		innerCirclePaint
		);
		}

		public void update(Joystick joystick) {
		XVelocity = joystick.getActuatorX() * MAX_SPEED;
		YVelocity = joystick.getActuatorY() * MAX_SPEED;

		}

		public void updateInnerCirclePosition() {
		innerCircleCenterX = (int) (outerCircleCenterX + actuatorX * outerCircleRadii);
		innerCircleCenterY = (int) (outerCircleCenterY + actuatorY * outerCircleRadii);
		}

		public boolean isPressed(double TouchPosx,double TouchPosy) {
		joystickCenterToTouchDistance = Math.sqrt(Math.pow(outerCircleCenterX-TouchPosx,2) +
		Math.pow(outerCircleCenterY-TouchPosy,2)
		);
		return joystickCenterToTouchDistance < outerCircleRadii;
		}

		public void setIsPressed(boolean isPressed) {
		this.isPressed = isPressed;
		}

		public boolean getIsPressed() {
		return isPressed;
		}

		public void setActuator(double TouchPosx,double TouchPosy) {
		double deltaX = TouchPosx - outerCircleCenterX;
		double deltaY = TouchPosy - outerCircleCenterY;
		double deltaDistance = Math.sqrt(Math.pow(deltaX, 2) + Math.pow(deltaY,2));

		if(deltaDistance < outerCircleRadii) {
		actuatorX = deltaX/outerCircleRadii;
		actuatorY = deltaY/outerCircleRadii;
		}else {
		actuatorX = deltaX/deltaDistance;
		actuatorY = deltaY/deltaDistance;
		}

		}

		public void resetActuator() {
		actuatorX = 0.0;
		actuatorY = 0.0;
		}

		public double getActuatorX() {
		return actuatorX;
		}

		public double getActuatorY() {
		return actuatorY;
		}

		}