MMGames/BrickBuster
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base: MMGames:fe2c68d39ad6a472f1567e2345de4f8dfdc7b798
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MMGames:master
MMGames:dev
MMGames:box2d
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compare: MMGames:e4000998cc4d99201779467ba457a6239aa45a41
Branches Tags
MMGames:dev
MMGames:master
MMGames:box2d

3 Commits
fe2c68d39a ... e4000998cc

Author SHA1 Message Date
Matt Low
e4000998cc Complete box2d implementation, all collisions handled with box2d 
Shield re-implemented as an entity with a box2d body
Multiball powerup now spawns balls at paddle instead of from block location
 2018-11-15 10:34:22 +04:00
Matt Low
92201411b9 Refactor entity.PhysicsBody to physics.PhysicsBody 
Create CollisionListener interface and Box2dContactListener
Register the Box2dContactListener with the box2d world
 2018-11-14 22:26:02 +04:00
Matt Low
0994289c7e Begin box2d physics implementation. 
Created box2d bodies for all game entities (except shield)
Scale units down to box2d friendly units (40:1 <-> pixels:box2d)
Use floats in places integers were used for position and sizing
 2018-11-14 22:04:41 +04:00
12 changed files with 547 additions and 160 deletions
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3
build.gradle
View File

@ -46,6 +46,7 @@ project(":desktop") {
compile project(":core")
compile "com.badlogicgames.gdx:gdx-backend-lwjgl:$gdxVersion"
compile "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-desktop"
compile "com.badlogicgames.gdx:gdx-box2d-platform:$gdxVersion:natives-desktop"
}
}
@ -56,7 +57,9 @@ project(":core") {
dependencies {
compile "com.badlogicgames.gdx:gdx:$gdxVersion"
compile "com.badlogicgames.gdx:gdx-box2d:$gdxVersion"
compile "net.dermetfan.libgdx-utils:libgdx-utils:0.13.4"
compile "net.dermetfan.libgdx-utils:libgdx-utils-box2d:0.13.4"
}
}

165
core/src/com/me/brickbuster/entity/Ball.java
View File

@ -6,102 +6,108 @@ import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
import com.badlogic.gdx.graphics.glutils.ShapeRenderer.ShapeType;
import com.badlogic.gdx.math.MathUtils;
import com.badlogic.gdx.math.Vector2;
import com.me.brickbuster.BrickBuster;
import com.me.brickbuster.Utils;
import com.badlogic.gdx.physics.box2d.Body;
import com.badlogic.gdx.physics.box2d.BodyDef;
import com.badlogic.gdx.physics.box2d.CircleShape;
import com.badlogic.gdx.physics.box2d.FixtureDef;
import com.me.brickbuster.physics.CollisionListener;
import com.me.brickbuster.physics.PhysicsBody;
import com.me.brickbuster.state.PlayState;
import net.dermetfan.utils.Pair;
import java.util.Iterator;
public class Ball extends Entity implements PhysicsBody, CollisionListener {
public class Ball extends Entity {
public static final int RADIUS = 45;
public static final float RADIUS = 1.2f;
public static final Color BALL_COLOR = Color.CHARTREUSE;
public static final float DEFAULT_SPEED = 1800;
public static final float BOOST_SPEED = 2200;
public static final float DEFAULT_SPEED = 45;
public static final float BOOST_SPEED = 55;
public static final int BLOCKS_FOR_BOOST = 39;
public Vector2 direction;
private float speed;
private boolean isStuck = true;
private boolean isDead = false;
private boolean touchedPaddle = false;
private Body body;
public Ball(PlayState state) {
super(state,BrickBuster.BOARD_WIDTH /2, state.paddle.getY() + Paddle.PADDLE_HEIGHT + RADIUS);
super(state, state.paddle.getX(), state.paddle.getY() + Paddle.PADDLE_HEIGHT + RADIUS);
this.speed = state.bricks.size() > BLOCKS_FOR_BOOST? DEFAULT_SPEED : BOOST_SPEED;
createBody();
}
@Override
public void render(ShapeRenderer sr) {
sr.begin(ShapeType.Filled);
sr.setColor(BALL_COLOR);
sr.circle(pos.x, pos.y, RADIUS);
sr.circle(pos.x * PlayState.PIXEL_PER_METER,
pos.y * PlayState.PIXEL_PER_METER,
RADIUS * PlayState.PIXEL_PER_METER);
sr.end();
}
@Override
public void update(float dt) {
if (isStuck || isDead) {
if (!isDead && Gdx.input.justTouched()) {
if (isStuck || deleted) {
if (!deleted && Gdx.input.justTouched()) {
launch();
} else {
return;
}
}
Vector2 new_pos = pos.cpy().add(direction.cpy().scl(speed * dt));
boolean brickCollision = false;
Iterator<Brick> brickIterator = state.bricks.iterator();
while (!brickCollision && brickIterator.hasNext()) {
Brick brick = brickIterator.next();
Vector2[] vertices = brick.getVertices();
for(int i = 0; i < vertices.length; i++) {
Vector2 v1 = vertices[i];
Vector2 v2 = vertices[i+1 < vertices.length? i+1 : 0];
Vector2 segment = v2.cpy().sub(v1);
Vector2 nearest = Utils.nearestPoint(v1.cpy(), segment, new_pos.cpy());
if (nearest.dst(new_pos.x, new_pos.y) <= RADIUS) {
if (brick.hit()) {
brickIterator.remove();
}
Utils.reflect(direction, segment.nor());
brickCollision = true;
break;
}
}
if (touchedPaddle) {
paddleCollision();
touchedPaddle = false;
}
if (new_pos.x + RADIUS > BrickBuster.BOARD_WIDTH || new_pos.x - RADIUS < 0) {
Utils.reflect(direction, Utils.VERTICAL_EDGE);
} else if (new_pos.y + RADIUS > BrickBuster.BOARD_HEIGHT) {
Utils.reflect(direction, Utils.HORIZONTAL_EDGE);
} else if (state.getShieldCount() > 0
&& new_pos.y - RADIUS < PlayState.SHIELD_HEIGHT * state.getShieldCount()) {
Utils.reflect(direction, Utils.HORIZONTAL_EDGE);
state.removeShield();
} else if (new_pos.y + RADIUS < 0) {
isDead = true;
return;
} else if (direction.y < 0 && new_pos.y <= state.paddle.getY() + Paddle.PADDLE_HEIGHT + RADIUS) {
Pair<Vector2, Vector2> paddle = state.paddle.getTopEdge();
Vector2 lineDir = paddle.getValue().sub(paddle.getKey());
Vector2 nearest = Utils.nearestPoint(paddle.getKey().cpy(), lineDir, new_pos.cpy());
if (nearest.dst(new_pos.x, new_pos.y) <= RADIUS) {
paddleCollision();
if (state.paddle.isSticky()) {
return;
}
}
if (getY() + RADIUS < 0) {
deleted = true;
}
pos.add(direction.cpy().scl(speed * dt));
body.setLinearVelocity(body.getLinearVelocity().nor().scl(speed));
}
@Override
public Body getBody() {
return body;
}
@Override
public void createBody() {
BodyDef ballBody = new BodyDef();
ballBody.type = BodyDef.BodyType.DynamicBody;
ballBody.position.set(pos);
CircleShape ballShape = new CircleShape();
ballShape.setRadius(RADIUS);
FixtureDef ballFixture = new FixtureDef();
ballFixture.shape = ballShape;
ballFixture.restitution = 1f;
ballFixture.friction = 0f;
body = state.world.createBody(ballBody);
body.createFixture(ballFixture);
body.setUserData(this);
ballShape.dispose();
}
@Override
public void beginContact(Entity contacted) {
if (contacted instanceof Shield) {
contacted.delete();
}
if (contacted instanceof Paddle && !isStuck) {
touchedPaddle = true;
}
}
@Override
public void endContact(Entity contacted) {
}
public Vector2 paddleReflectAngle() {
int trim = (int) (state.paddle.getWidth() * 0.10);
float trim = state.paddle.getWidth() * 0.10f;
float rel = MathUtils.clamp((pos.x - state.paddle.getX()) + (state.paddle.getWidth()/2),
trim, state.paddle.getWidth()-trim);
float newAngle = MathUtils.PI - (MathUtils.PI * (rel / state.paddle.getWidth()));
@ -109,23 +115,43 @@ public class Ball extends Entity {
}
public void launch() {
Vector2 direction;
if (state.paddle.isSticky()) {
direction = paddleReflectAngle();
} else {
// launch at random angle between 135 and 45 degrees
float angle = MathUtils.random(MathUtils.PI/2) + MathUtils.PI/4;
direction = new Vector2(MathUtils.cos(angle), MathUtils.sin(angle));
}
body.setLinearVelocity(direction.scl(speed));
isStuck = false;
}
public void paddleCollision() {
if (state.paddle.isSticky()) {
isStuck = true;
pos.y = state.paddle.getY() + Paddle.PADDLE_HEIGHT + RADIUS;
body.setLinearVelocity(new Vector2());
setY(state.paddle.getY() + Paddle.PADDLE_HEIGHT + RADIUS);
return;
}
direction = paddleReflectAngle();
body.setLinearVelocity(paddleReflectAngle().scl(speed));
}
@Override
public void setX(float x) {
super.setX(x);
Vector2 bodyPos = body.getPosition();
bodyPos.x = x;
body.setTransform(bodyPos, 0);
}
@Override
public void setY(float y) {
super.setY(y);
Vector2 bodyPos = body.getPosition();
bodyPos.y = y;
body.setTransform(bodyPos, 0);
}
public void setSpeed(float speed) {
@ -136,15 +162,4 @@ public class Ball extends Entity {
return isStuck;
}
public boolean isDead() {
return isDead;
}
public void setDirection(Vector2 direction) {
this.direction = direction;
}
public void setStuck(boolean stuck) {
isStuck = stuck;
}
}

80
core/src/com/me/brickbuster/entity/Brick.java
View File

@ -4,50 +4,96 @@ import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
import com.badlogic.gdx.graphics.glutils.ShapeRenderer.ShapeType;
import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.physics.box2d.Body;
import com.badlogic.gdx.physics.box2d.BodyDef;
import com.badlogic.gdx.physics.box2d.FixtureDef;
import com.badlogic.gdx.physics.box2d.PolygonShape;
import com.me.brickbuster.entity.powerup.PowerUpType;
import com.me.brickbuster.physics.CollisionListener;
import com.me.brickbuster.physics.PhysicsBody;
import com.me.brickbuster.state.PlayState;
public class Brick extends Entity {
public class Brick extends Entity implements PhysicsBody, CollisionListener {
public static final Color DEFAULT_COLOR = Color.FOREST;
public static final int BRICK_WIDTH = 200;
public static final int BRICK_HEIGHT = 100;
public static final float BRICK_WIDTH = 5f;
public static final float BRICK_HEIGHT = 2.5f;
private PowerUpType powerUpType;
private Color color;
private Vector2[] vertices;
private Body body;
private boolean hitByBall = false;
public Brick(PlayState state, PowerUpType powerUpType, int x, int y) {
public Brick(PlayState state, PowerUpType powerUpType, float x, float y) {
this(state, powerUpType, true, x, y);
}
public Brick(PlayState state, PowerUpType powerUpType, boolean hidePowerup, int x, int y) {
public Brick(PlayState state, PowerUpType powerUpType, boolean hidePowerup, float x, float y) {
this(state, powerUpType, DEFAULT_COLOR, hidePowerup, x, y);
}
public Brick(PlayState state, PowerUpType powerUpType, Color color, boolean hidePowerUp, int x, int y) {
public Brick(PlayState state, PowerUpType powerUpType, Color color, boolean hidePowerUp, float x, float y) {
super(state, x, y);
this.powerUpType = powerUpType;
this.color = powerUpType != null && !hidePowerUp? powerUpType.getColor() : color;
this.vertices = new Vector2[] {
new Vector2(x, y),
new Vector2(x + BRICK_WIDTH, y),
new Vector2(x + BRICK_WIDTH, y + BRICK_HEIGHT),
new Vector2(x, y + BRICK_HEIGHT)
};
createBody();
}
@Override
public void render(ShapeRenderer sr) {
sr.begin(ShapeType.Filled);
sr.setColor(color);
sr.rect(getX(), getY(), BRICK_WIDTH, BRICK_HEIGHT);
sr.rect(getX() * PlayState.PIXEL_PER_METER,
getY() * PlayState.PIXEL_PER_METER,
BRICK_WIDTH * PlayState.PIXEL_PER_METER,
BRICK_HEIGHT * PlayState.PIXEL_PER_METER);
sr.end();
}
@Override
public void update(float dt) {
if (hitByBall) {
hit();
hitByBall = false;
}
}
@Override
public Body getBody() {
return body;
}
@Override
public void createBody() {
BodyDef brickBody = new BodyDef();
brickBody.type = BodyDef.BodyType.StaticBody;
brickBody.position.set(pos.cpy());
PolygonShape brickShape = new PolygonShape();
brickShape.setAsBox(BRICK_WIDTH/2, BRICK_HEIGHT/2,
new Vector2(BRICK_WIDTH/2,BRICK_HEIGHT/2), 0);
FixtureDef brickFixture = new FixtureDef();
brickFixture.shape = brickShape;
brickFixture.friction = 0f;
body = state.world.createBody(brickBody);
body.createFixture(brickFixture);
body.setUserData(this);
brickShape.dispose();
}
@Override
public void beginContact(Entity contacted) {
if (contacted instanceof Ball) {
hitByBall = true;
}
}
@Override
public void endContact(Entity contacted) {
}
public boolean hit() {
@ -60,11 +106,9 @@ public class Brick extends Entity {
if (powerUpType != null) {
state.powerUps.add(powerUpType.createInstance(state, this));
}
deleted = true;
return true;
}
public Vector2[] getVertices() {
return vertices;
}
}

9
core/src/com/me/brickbuster/entity/Entity.java
View File

@ -8,6 +8,7 @@ public abstract class Entity {
protected PlayState state;
protected Vector2 pos;
protected boolean deleted = false;
public Entity(PlayState state, Vector2 pos) {
this(state, pos.x, pos.y);
@ -46,4 +47,12 @@ public abstract class Entity {
pos.y = y;
}
public void delete() {
this.deleted = true;
}
public boolean isDeleted() {
return deleted;
}
}

92
core/src/com/me/brickbuster/entity/Paddle.java
View File

@ -6,31 +6,43 @@ import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
import com.badlogic.gdx.graphics.glutils.ShapeRenderer.ShapeType;
import com.badlogic.gdx.math.Vector2;
import com.me.brickbuster.BrickBuster;
import com.badlogic.gdx.physics.box2d.Body;
import com.badlogic.gdx.physics.box2d.BodyDef;
import com.badlogic.gdx.physics.box2d.EdgeShape;
import com.badlogic.gdx.physics.box2d.FixtureDef;
import com.me.brickbuster.physics.CollisionListener;
import com.me.brickbuster.physics.PhysicsBody;
import com.me.brickbuster.state.PlayState;
import net.dermetfan.utils.Pair;
public class Paddle extends Entity {
public class Paddle extends Entity implements PhysicsBody {
public static final Color STICKY_COLOR = Color.GRAY;
public static final Color PADDLE_COLOR = Color.BLACK;
public static final int DEFAULT_WIDTH = 300;
public static final int PADDLE_HEIGHT = 30;
public static final int PADDLE_Y = 50;
public static final int PADDLE_SPEED = 1500;
private int width = DEFAULT_WIDTH;
public static final float DEFAULT_WIDTH = 7.5f;
public static final float PADDLE_HEIGHT = 0.75f;
public static final float PADDLE_Y = 1.25f;
public static final float PADDLE_SPEED = 40f;
private float width = DEFAULT_WIDTH;
private boolean sticky = false;
private Body body;
public Paddle(PlayState brickBuster) {
super(brickBuster, BrickBuster.BOARD_WIDTH / 2, PADDLE_Y);
super(brickBuster, PlayState.BOARD_WIDTH/2, PADDLE_Y);
createBody();
}
@Override
public void render(ShapeRenderer sr) {
sr.begin(ShapeType.Filled);
sr.setColor(sticky? STICKY_COLOR : PADDLE_COLOR);
sr.rect(getX() - width/2, getY(), width, PADDLE_HEIGHT);
sr.rect((getX() - width/2) * PlayState.PIXEL_PER_METER,
getY() * PlayState.PIXEL_PER_METER,
width * PlayState.PIXEL_PER_METER,
PADDLE_HEIGHT * PlayState.PIXEL_PER_METER);
sr.end();
}
@ -41,7 +53,7 @@ public class Paddle extends Entity {
setX(width/2);
return;
}
pos.x = pos.x - PADDLE_SPEED * dt;
setX(pos.x - PADDLE_SPEED * dt);
for (Ball ball : state.balls) {
if (ball.isStuck()) {
@ -50,11 +62,11 @@ public class Paddle extends Entity {
}
}
if (Gdx.input.isKeyPressed(Input.Keys.RIGHT)) {
if (pos.x + width/2 + PADDLE_SPEED * dt > BrickBuster.BOARD_WIDTH) {
setX(BrickBuster.BOARD_WIDTH - width/2);
if (pos.x + width/2 + PADDLE_SPEED * dt > PlayState.BOARD_WIDTH) {
setX(PlayState.BOARD_WIDTH - width/2);
return;
}
pos.x = pos.x + PADDLE_SPEED * dt;
setX(pos.x + PADDLE_SPEED * dt);
for (Ball ball : state.balls) {
if (ball.isStuck()) {
@ -64,19 +76,59 @@ public class Paddle extends Entity {
}
}
public Pair<Vector2, Vector2> getTopEdge() {
return new Pair<Vector2, Vector2>(
new Vector2(pos.x - width/2, pos.y + PADDLE_HEIGHT),
new Vector2(pos.x + width/2, pos.y + PADDLE_HEIGHT)
);
@Override
public void createBody() {
BodyDef paddleBody = new BodyDef();
paddleBody.type = BodyDef.BodyType.KinematicBody;
paddleBody.position.set(pos);
EdgeShape paddleShape = new EdgeShape();
paddleShape.set(new Vector2(-width/2, PADDLE_HEIGHT),
new Vector2(width/2, PADDLE_HEIGHT));
FixtureDef paddleFixture = new FixtureDef();
paddleFixture.shape = paddleShape;
//paddleFixture.isSensor = true;
body = state.world.createBody(paddleBody);
body.createFixture(paddleFixture);
body.setUserData(this);
paddleShape.dispose();
}
public int getWidth() {
@Override
public Body getBody() {
return body;
}
@Override
public void setX(float x) {
super.setX(x);
Vector2 bodyPos = body.getPosition();
bodyPos.x = x;
body.setTransform(bodyPos, 0);
}
@Override
public void setY(float y) {
super.setY(y);
Vector2 bodyPos = body.getPosition();
bodyPos.y = y;
body.setTransform(bodyPos, 0);
}
public float getWidth() {
return width;
}
public void setWidth(int width) {
public void setWidth(float width) {
if (this.width == width) {
return;
}
state.world.destroyBody(body);
this.width = width;
createBody();
}
public boolean isSticky() {

67
core/src/com/me/brickbuster/entity/Shield.java Normal file
View File

@ -0,0 +1,67 @@
package com.me.brickbuster.entity;
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.physics.box2d.Body;
import com.badlogic.gdx.physics.box2d.BodyDef;
import com.badlogic.gdx.physics.box2d.FixtureDef;
import com.badlogic.gdx.physics.box2d.PolygonShape;
import com.me.brickbuster.entity.powerup.PowerUpType;
import com.me.brickbuster.physics.PhysicsBody;
import com.me.brickbuster.state.PlayState;
public class Shield extends Entity implements PhysicsBody {
public static final float SHIELD_HEIGHT = 0.75f;
private Body body;
public Shield(PlayState state) {
super(state, 0, state.getShieldCount() * SHIELD_HEIGHT);
createBody();
}
@Override
public void render(ShapeRenderer sr) {
sr.begin(ShapeRenderer.ShapeType.Filled);
sr.setColor(PowerUpType.SHIELD.getColor());
sr.rect(0, pos.y * PlayState.PIXEL_PER_METER,
PlayState.BOARD_WIDTH * PlayState.PIXEL_PER_METER,
SHIELD_HEIGHT * PlayState.PIXEL_PER_METER);
sr.end();
}
@Override
public void update(float dt) {
if (deleted) {
state.removeShield(this);
}
}
@Override
public void createBody() {
BodyDef brickBody = new BodyDef();
brickBody.type = BodyDef.BodyType.StaticBody;
brickBody.position.set(pos.cpy());
PolygonShape brickShape = new PolygonShape();
brickShape.setAsBox(PlayState.BOARD_WIDTH/2, SHIELD_HEIGHT/2,
new Vector2(PlayState.BOARD_WIDTH/2,SHIELD_HEIGHT/2), 0);
FixtureDef brickFixture = new FixtureDef();
brickFixture.shape = brickShape;
brickFixture.friction = 0f;
body = state.world.createBody(brickBody);
body.createFixture(brickFixture);
body.setUserData(this);
brickShape.dispose();
}
@Override
public Body getBody() {
return body;
}
}

6
core/src/com/me/brickbuster/entity/powerup/MultiBallPowerUp.java
View File

@ -4,6 +4,7 @@ import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.math.MathUtils;
import com.badlogic.gdx.math.Vector2;
import com.me.brickbuster.entity.Ball;
import com.me.brickbuster.entity.Paddle;
import com.me.brickbuster.state.PlayState;
public class MultiBallPowerUp extends PowerUp {
@ -19,10 +20,7 @@ public class MultiBallPowerUp extends PowerUp {
public void activate() {
for (int x = 0; x < 2; x++) {
Ball ball = new Ball(state);
ball.setPos(pos.cpy());
float angle = MathUtils.random(MathUtils.PI*2);
ball.setDirection(new Vector2(MathUtils.cos(angle), MathUtils.sin(angle)));
ball.setStuck(false);
ball.launch();
state.balls.add(ball);
}
}

70
core/src/com/me/brickbuster/entity/powerup/PowerUp.java
View File

@ -4,53 +4,93 @@ import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
import com.badlogic.gdx.graphics.glutils.ShapeRenderer.ShapeType;
import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.physics.box2d.Body;
import com.badlogic.gdx.physics.box2d.BodyDef;
import com.badlogic.gdx.physics.box2d.CircleShape;
import com.badlogic.gdx.physics.box2d.FixtureDef;
import com.me.brickbuster.Utils;
import com.me.brickbuster.entity.Entity;
import com.me.brickbuster.entity.Paddle;
import com.me.brickbuster.physics.CollisionListener;
import com.me.brickbuster.physics.PhysicsBody;
import com.me.brickbuster.state.PlayState;
import net.dermetfan.utils.Pair;
public abstract class PowerUp extends Entity {
public abstract class PowerUp extends Entity implements PhysicsBody, CollisionListener {
public static final int RADIUS = 45;
public static final int FALL_SPEED = 600;
public static final float RADIUS = 1.2f;
public static final float FALL_SPEED = 15f;
private Color color;
private boolean isCaught;
private Body body;
public PowerUp(PlayState state, Vector2 pos, Color color) {
super(state, pos);
this.color = color;
createBody();
}
@Override
public void render(ShapeRenderer sr) {
sr.begin(ShapeType.Filled);
sr.setColor(color);
sr.circle(getX(), getY(), RADIUS);
sr.circle(getX() * PlayState.PIXEL_PER_METER,
getY() * PlayState.PIXEL_PER_METER,
RADIUS * PlayState.PIXEL_PER_METER);
sr.end();
}
@Override
public void update(float dt) {
setY(getY() - FALL_SPEED * dt);
Pair<Vector2, Vector2> paddle = state.paddle.getTopEdge();
Vector2 lineDir = paddle.getValue().sub(paddle.getKey());
Vector2 nearest = Utils.nearestPoint(paddle.getKey().cpy(), lineDir, getPos().cpy());
if (nearest.dst(getX(), getY()) <= RADIUS) {
if (isCaught) {
activate();
isCaught = true;
delete();
}
if (getY() + RADIUS < 0) {
delete();
}
}
@Override
public Body getBody() {
return body;
}
@Override
public void createBody() {
BodyDef ballBody = new BodyDef();
ballBody.type = BodyDef.BodyType.DynamicBody;
ballBody.position.set(pos);
CircleShape ballShape = new CircleShape();
ballShape.setRadius(RADIUS);
FixtureDef ballFixture = new FixtureDef();
ballFixture.shape = ballShape;
ballFixture.isSensor = true;
body = state.world.createBody(ballBody);
body.createFixture(ballFixture);
body.setUserData(this);
body.setLinearVelocity(0f, -FALL_SPEED);
ballShape.dispose();
}
@Override
public void beginContact(Entity contacted) {
if (contacted instanceof Paddle) {
isCaught = true;
}
}
@Override
public void endContact(Entity contacted) {}
public abstract void activate();
public boolean isCaught() {
return isCaught;
}
}

53
core/src/com/me/brickbuster/physics/Box2dContactListener.java Normal file
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@ -0,0 +1,53 @@
package com.me.brickbuster.physics;
import com.badlogic.gdx.physics.box2d.Contact;
import com.badlogic.gdx.physics.box2d.ContactImpulse;
import com.badlogic.gdx.physics.box2d.ContactListener;
import com.badlogic.gdx.physics.box2d.Manifold;
import com.me.brickbuster.entity.Entity;
public class Box2dContactListener implements ContactListener {
@Override
public void beginContact(Contact contact) {
Object userDataA = contact.getFixtureA().getBody().getUserData();
Object userDataB = contact.getFixtureB().getBody().getUserData();
if (userDataA == null || userDataB == null ||
!(userDataA instanceof Entity) || !(userDataB instanceof Entity)) {
return;
}
if (userDataA instanceof CollisionListener) {
((CollisionListener) userDataA).beginContact((Entity) userDataB);
}
if (userDataB instanceof CollisionListener) {
((CollisionListener) userDataB).beginContact((Entity) userDataA);
}
}
@Override
public void endContact(Contact contact) {
Object userDataA = contact.getFixtureA().getBody().getUserData();
Object userDataB = contact.getFixtureB().getBody().getUserData();
if (userDataA == null || userDataB == null ||
!(userDataA instanceof Entity) || !(userDataB instanceof Entity)) {
return;
}
if (userDataA instanceof CollisionListener) {
((CollisionListener) userDataA).endContact((Entity) userDataB);
}
if (userDataB instanceof CollisionListener) {
((CollisionListener) userDataB).endContact((Entity) userDataA);
}
}
@Override
public void preSolve(Contact contact, Manifold oldManifold) {}
@Override
public void postSolve(Contact contact, ContactImpulse impulse) {}
}

11
core/src/com/me/brickbuster/physics/CollisionListener.java Normal file
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@ -0,0 +1,11 @@
package com.me.brickbuster.physics;
import com.me.brickbuster.entity.Entity;
public interface CollisionListener {
void beginContact(Entity contacted);
void endContact(Entity contacted);
}

11
core/src/com/me/brickbuster/physics/PhysicsBody.java Normal file
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@ -0,0 +1,11 @@
package com.me.brickbuster.physics;
import com.badlogic.gdx.physics.box2d.Body;
public interface PhysicsBody {
void createBody();
Body getBody();
}

140
core/src/com/me/brickbuster/state/PlayState.java
View File

@ -2,63 +2,125 @@ package com.me.brickbuster.state;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.glutils.ShapeRenderer.ShapeType;
import com.badlogic.gdx.math.MathUtils;
import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.physics.box2d.*;
import com.badlogic.gdx.utils.Array;
import com.me.brickbuster.BrickBuster;
import com.me.brickbuster.entity.Ball;
import com.me.brickbuster.entity.Brick;
import com.me.brickbuster.entity.Paddle;
import com.me.brickbuster.entity.powerup.*;
import com.me.brickbuster.entity.*;
import com.me.brickbuster.entity.powerup.PowerUp;
import com.me.brickbuster.entity.powerup.PowerUpType;
import com.me.brickbuster.physics.Box2dContactListener;
import java.util.*;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
public class PlayState extends State {
public static final int SHIELD_HEIGHT = 30;
public static final float PIXEL_PER_METER = 40f; // Board dimension: 54x96 meters
public static final float BOARD_WIDTH = 54f;
public static final float BOARD_HEIGHT = 96f;
public static final float EDGE_PADDING = .125f;
public static final float POWERUP_CHANCE = 0.15f;
public static final int COLUMNS = 9;
public static final int ROWS = 8;
public static final Vector2 lowerLeftCorner =
new Vector2(EDGE_PADDING,EDGE_PADDING);
public static final Vector2 lowerRightCorner =
new Vector2(BrickBuster.BOARD_WIDTH/PIXEL_PER_METER-EDGE_PADDING,EDGE_PADDING);
public static final Vector2 upperRightCorner =
new Vector2(BrickBuster.BOARD_WIDTH/PIXEL_PER_METER-EDGE_PADDING, BrickBuster.BOARD_HEIGHT/PIXEL_PER_METER-EDGE_PADDING);
public static final Vector2 upperLeftCorner =
new Vector2(EDGE_PADDING, BrickBuster.BOARD_HEIGHT/PIXEL_PER_METER-EDGE_PADDING);
public World world;
public Body playArea;
public Array<Body> bodies;
public List<PowerUp> powerUps;
public Paddle paddle;
public List<Ball> balls;
public List<Brick> bricks;
public List<Shield> shields;
private int shieldCount = 0;
private float updateTime = 0f;
private final Box2DDebugRenderer debugRenderer;
public PlayState(BrickBuster game) {
super(game);
debugRenderer = new Box2DDebugRenderer();
}
@Override
public void setup() {
// Initialize a world with no gravity
world = new World(new Vector2(), false);
world.setContactListener(new Box2dContactListener());
// define a playArea body with position set to 0
BodyDef playAreaDef = new BodyDef();
playAreaDef.type = BodyDef.BodyType.StaticBody;
playAreaDef.position.set(new Vector2());
EdgeShape screenEdge = new EdgeShape();
playArea = world.createBody(playAreaDef);
// Right edge
screenEdge.set(lowerRightCorner, upperRightCorner);
playArea.createFixture(screenEdge, 0f);
// Top edge
screenEdge.set(upperRightCorner, upperLeftCorner);
playArea.createFixture(screenEdge, 0f);
// Left edge
screenEdge.set(upperLeftCorner, lowerLeftCorner);
playArea.createFixture(screenEdge, 0f);
// Bottom edge
//screenEdge.set(lowerLeftCorner, lowerRightCorner);
//playArea.createFixture(screenEdge, 0f);
screenEdge.dispose();
powerUps = new ArrayList<PowerUp>();
paddle = new Paddle(this);
int brick_padding = (BrickBuster.BOARD_WIDTH - COLUMNS * Brick.BRICK_WIDTH) / (COLUMNS + 1);
float brick_padding = ((BrickBuster.BOARD_WIDTH/PIXEL_PER_METER) - COLUMNS * Brick.BRICK_WIDTH) / (COLUMNS + 1);
bricks = new ArrayList<Brick>();
for (int col = 0; col < COLUMNS; col++) {
for (int row = 0; row < ROWS; row++) {
int x = brick_padding + (col * (Brick.BRICK_WIDTH + brick_padding));
int y = brick_padding + Brick.BRICK_HEIGHT + (row * (Brick.BRICK_HEIGHT + brick_padding));
float x = brick_padding + (col * (Brick.BRICK_WIDTH + brick_padding));
float y = brick_padding + Brick.BRICK_HEIGHT + (row * (Brick.BRICK_HEIGHT + brick_padding));
PowerUpType powerUpType = null;
if (MathUtils.randomBoolean(POWERUP_CHANCE)) {
powerUpType = PowerUpType.getWeightedRandom();
}
bricks.add(new Brick(this, powerUpType, x, BrickBuster.BOARD_HEIGHT - y));
bricks.add(new Brick(this, powerUpType, x, BrickBuster.BOARD_HEIGHT/PIXEL_PER_METER - y));
}
}
balls = new ArrayList<Ball>();
balls.add(new Ball(this));
shields = new ArrayList<Shield>();
}
@Override
public void render() {
Array<Body> bodies = new Array<Body>();
world.getBodies(bodies);
for (Body b : bodies) {
Entity e = (Entity) b.getUserData();
if (e instanceof Ball || e instanceof PowerUp) {
e.setPos(b.getPosition());
}
}
long start = System.nanoTime();
for (Brick block : bricks) {
block.render(game.sr);
@ -69,14 +131,12 @@ public class PlayState extends State {
for (Ball ball : balls) {
ball.render(game.sr);
}
for (Shield shield : shields) {
shield.render(game.sr);
}
paddle.render(game.sr);
if (getShieldCount() > 0) {
game.sr.begin(ShapeType.Filled);
game.sr.setColor(Color.SALMON);
game.sr.rect(0, 0, BrickBuster.BOARD_WIDTH, getShieldCount() * SHIELD_HEIGHT);
game.sr.end();
}
//debugRenderer.render(world, game.cam.combined.cpy().scl(PIXEL_PER_METER));
long renderTime = System.nanoTime() - start;
game.sb.begin();
@ -94,8 +154,9 @@ public class PlayState extends State {
for (Iterator<Ball> it = balls.iterator(); it.hasNext();) {
Ball ball = it.next();
ball.update(dt);
if (ball.isDead()) {
if (ball.isDeleted()) {
it.remove();
world.destroyBody(ball.getBody());
}
}
if (balls.isEmpty()) {
@ -105,15 +166,36 @@ public class PlayState extends State {
for (Iterator<PowerUp> it = powerUps.iterator(); it.hasNext();) {
PowerUp powerUp = it.next();
powerUp.update(dt);
if(powerUp.isCaught()) {
if(powerUp.isDeleted()) {
it.remove();
world.destroyBody(powerUp.getBody());
}
}
for (Iterator<Shield> it = shields.iterator(); it.hasNext();) {
Shield shield = it.next();
shield.update(dt);
if(shield.isDeleted()) {
it.remove();
world.destroyBody(shield.getBody());
}
}
for (Iterator<Brick> it = bricks.iterator(); it.hasNext();) {
Brick brick = it.next();
brick.update(dt);
if (brick.isDeleted()) {
it.remove();
world.destroyBody(brick.getBody());
}
}
if (bricks.isEmpty()) {
game.setScreen(new MenuState(game));
dispose();
return;
}
world.step(dt, 6, 2);
updateTime = System.nanoTime() - start;
}
@ -121,6 +203,8 @@ public class PlayState extends State {
public void dispose() {
super.dispose();
world.dispose();
powerUps.clear();
powerUps = null;
balls.clear();
@ -131,25 +215,25 @@ public class PlayState extends State {
}
public int getShieldCount() {
return shieldCount;
return shields.size();
}
public void addShield() {
shieldCount++;
paddle.setY(paddle.getY() + SHIELD_HEIGHT);
Shield shield = new Shield(this);
shields.add(shield);
paddle.setY(paddle.getY() + Shield.SHIELD_HEIGHT);
for (Ball ball : balls) {
if (ball.isStuck()) {
ball.setY(ball.getY() + SHIELD_HEIGHT);
ball.setY(ball.getY() + Shield.SHIELD_HEIGHT);
}
}
}
public void removeShield() {
shieldCount--;
paddle.setY(paddle.getY() - SHIELD_HEIGHT);
public void removeShield(Shield shield) {
paddle.setY(paddle.getY() - Shield.SHIELD_HEIGHT);
for (Ball ball : balls) {
if (ball.isStuck()) {
ball.setY(ball.getY() - SHIELD_HEIGHT);
ball.setY(ball.getY() - Shield.SHIELD_HEIGHT);
}
}
}