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Add EntityFactory, player can now shoot bullets

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Add DEBUG Constant + rendering of FPS when true
This commit is contained in:
Matt Low 2020-01-25 17:26:04 +04:00
parent 087b53564f
commit 74ba61ee53
4 changed files with 100 additions and 32 deletions
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2
core/src/com/me/asteroids/Constants.java
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@ -2,6 +2,8 @@ package com.me.asteroids;
public class Constants {
public static final boolean DEBUG = false;
public static final int WIDTH = 800;
public static final int HEIGHT = 600;

73
core/src/com/me/asteroids/EntityFactory.java Normal file
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@ -0,0 +1,73 @@
package com.me.asteroids;
import com.badlogic.gdx.math.Polygon;
import com.badlogic.gdx.math.Vector2;
import com.me.asteroids.components.AccelerationComponent;
import com.me.asteroids.components.ModelComponent;
import com.me.asteroids.components.PlayerComponent;
import com.me.asteroids.components.PositionComponent;
import com.me.asteroids.components.VelocityComponent;
import com.me.common.ecs.Engine;
import com.me.common.ecs.Entity;
public class EntityFactory {
public static Entity createPlayer(Engine engine) {
PositionComponent position = new PositionComponent();
position.position = new Vector2(Constants.HALF_WIDTH, Constants.HALF_HEIGHT);
position.rotation = 90;
VelocityComponent velocity = new VelocityComponent();
velocity.velocity = new Vector2(0f, 0f);
velocity.maxVelocity = 400f;
ModelComponent model = new ModelComponent();
model.model = new Polygon(new float[] {
0f, 4f, // tip
-2.5f, -4f, // bottom left
-1f, -2.5f, // indent
1f, -2.5f, // indent
2.5f, -4f, // bottom right
});
model.model.scale(5);
AccelerationComponent accel = new AccelerationComponent();
accel.acceleration = new Vector2(0,1f);
Entity player = engine.createEntity();
player.addComponent(position);
player.addComponent(velocity);
player.addComponent(model);
player.addComponent(accel);
player.addComponent(new PlayerComponent());
return player;
}
public static Entity createBullet(Engine engine, Entity player) {
PositionComponent position = new PositionComponent();
float[] modelVertices = player.getComponent(ModelComponent.class).model.getTransformedVertices();
position.position = new Vector2(modelVertices[0], modelVertices[1]);
position.rotation = player.getComponent(PositionComponent.class).rotation;
VelocityComponent velocity = new VelocityComponent();
velocity.velocity = Utils.setUnitVectorAngle(new Vector2(), position.rotation).scl(500);
ModelComponent model = new ModelComponent();
model.model = new Polygon(new float[] {
-1f, 2f,
1f, 2f,
1f, -2f,
-1f, -2f,
});
model.model.setRotation(position.rotation);
model.model.setPosition(position.position.x, position.position.x);
Entity bullet = engine.createEntity();
bullet.addComponent(position);
bullet.addComponent(velocity);
bullet.addComponent(model);
return bullet;
}
}

51
core/src/com/me/asteroids/screens/GameScreen.java
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@ -1,8 +1,11 @@
package com.me.asteroids.screens;
import com.badlogic.gdx.math.Polygon;
import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.g2d.BitmapFont;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.me.asteroids.Constants;
import com.me.asteroids.EntityFactory;
import com.me.asteroids.Graphics;
import com.me.asteroids.components.AccelerationComponent;
import com.me.asteroids.components.ModelComponent;
@ -23,12 +26,19 @@ public class GameScreen extends Screen {
Graphics graphics;
SpriteBatch batch;
BitmapFont font;
public GameScreen(Graphics graphics) {
this.graphics = graphics;
}
@Override
public void setup() {
batch = new SpriteBatch();
font = new BitmapFont();
font.setColor(Color.RED);
engine = new Engine();
engine.registerComponentClass(PlayerComponent.class);
@ -44,36 +54,7 @@ public class GameScreen extends Screen {
engine.ready();
Entity player = engine.createEntity();
PositionComponent position = new PositionComponent();
position.position = new Vector2(Constants.HALF_WIDTH, Constants.HALF_HEIGHT);
position.rotation = 90;
player.addComponent(position);
VelocityComponent velocity = new VelocityComponent();
velocity.velocity = new Vector2(0f, 0f);
velocity.maxVelocity = 400f;
player.addComponent(velocity);
ModelComponent shape = new ModelComponent();
float[] vertices = new float[] {
0f, 4f, // tip
-2.5f, -4f, // bottom left
-1f, -2.5f, // indent
1f, -2.5f, // indent
2.5f, -4f, // bottom right
};
shape.model = new Polygon(vertices);
shape.model.scale(5);
player.addComponent(shape);
AccelerationComponent accel = new AccelerationComponent();
accel.acceleration = new Vector2(0,1f);
player.addComponent(accel);
player.addComponent(new PlayerComponent());
Entity player = EntityFactory.createPlayer(engine);
player.activate();
}
@ -81,6 +62,12 @@ public class GameScreen extends Screen {
public void update(float dt) {
graphics.reset();
engine.update(dt);
if (Constants.DEBUG) {
batch.begin();
font.draw(batch, String.format("FPS: %d, Entities: %d", Gdx.graphics.getFramesPerSecond(), engine.getEntityCount()), 50, 50);
batch.end();
}
}
@Override

6
core/src/com/me/asteroids/systems/PlayerInputSystem.java
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@ -3,6 +3,7 @@ package com.me.asteroids.systems;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input;
import com.badlogic.gdx.math.Vector2;
import com.me.asteroids.EntityFactory;
import com.me.asteroids.Utils;
import com.me.asteroids.components.AccelerationComponent;
import com.me.asteroids.components.PlayerComponent;
@ -60,6 +61,11 @@ public class PlayerInputSystem extends EntitySystem {
acceleration.set(0, 0);
}
}
if (Gdx.input.isKeyJustPressed(Input.Keys.SPACE)) {
Entity bullet = EntityFactory.createBullet(engine, entity);
bullet.activate();
}
}
}