Add GameDataComponent which holds current game's data (score, lives, etc)

Now more like an actual game. Score, lives, and when you die, you get respawned. If you die rnough times, you Game Over, and your lives and score are reset. Each time you get 10000 points, you gain a life! Add GameMode enum Add GameDataSystem which manipulates the current game data based on events. Add GameDataRenderSystem which renders the current game data. Add AsteroidHitEvent and PlayerDeathEvent which are are fired when an asteroid is destroyed or the player is killed, respectively. Add SpriteBatch to Graphics
2020-01-30 23:56:00 +04:00
parent c3b806f79f
commit fa809148a7
9 changed files with 274 additions and 5 deletions
--- a/core/src/com/me/asteroids/systems/GameDataSystem.java
+++ b/core/src/com/me/asteroids/systems/GameDataSystem.java
@ -0,0 +1,102 @@
+package com.me.asteroids.systems;
+
+import com.me.asteroids.Constants;
+import com.me.asteroids.GameMode;
+import com.me.asteroids.components.GameDataComponent;
+import com.me.asteroids.components.PositionComponent;
+import com.me.asteroids.components.VelocityComponent;
+import com.me.asteroids.events.AsteroidHitEvent;
+import com.me.asteroids.events.PlayerDeathEvent;
+import com.me.common.ecs.ComponentMapper;
+import com.me.common.ecs.Engine;
+import com.me.common.ecs.Entity;
+import com.me.common.ecs.EntitySystem;
+import com.me.common.ecs.event.EventHandler;
+import com.me.common.ecs.event.Listener;
+
+public class GameDataSystem extends EntitySystem implements Listener {
+
+    private ComponentMapper<GameDataComponent> gameDataMapper;
+
+    private GameDataComponent gameData;
+
+    public GameDataSystem(Engine engine) {
+        super(engine, GameDataComponent.class);
+        gameDataMapper = engine.getComponentMapper(GameDataComponent.class);
+    }
+
+    @Override
+    public void processEntity(Entity entity, float dt) {
+        if(gameData == null) {
+            gameData = gameDataMapper.get(entity);
+        }
+
+        if (gameData.gameModeTimer > 0 && (gameData.gameModeTimer -= dt) < 0) {
+            switch (gameData.gameMode) {
+                case DIED:
+                    if (--gameData.lives >= 0) {
+                        resetPlayer();
+                        setGameMode(GameMode.PLAYING);
+                    } else {
+                        setGameMode(GameMode.GAME_OVER);
+                    }
+                    break;
+                case GAME_OVER:
+                    gameData.reset();
+                    resetPlayer();
+                    setGameMode(GameMode.PLAYING);
+            }
+        }
+    }
+
+    @EventHandler
+    public void onAsteroidHit(AsteroidHitEvent event) {
+        if (gameData == null) {
+            return;
+        }
+
+        switch (event.asteroid.generation) {
+            case 0:
+                gameData.score += 20;
+                gameData.newLifeScore += 20;
+                break;
+            case 1:
+                gameData.score += 50;
+                gameData.newLifeScore += 50;
+                break;
+            default:
+                gameData.score += 100;
+                gameData.newLifeScore += 100;
+        }
+
+        if (gameData.newLifeScore >= Constants.NEW_LIFE_SCORE) {
+            gameData.newLifeScore -= Constants.NEW_LIFE_SCORE;
+            gameData.lives++;
+        }
+    }
+
+
+    @EventHandler
+    public void onPlayerDeath(PlayerDeathEvent event) {
+        if (gameData == null) {
+            return;
+        }
+
+        setGameMode(GameMode.DIED);
+    }
+
+    private void resetPlayer() {
+        Entity player = engine.getEntities().get(1);
+        PositionComponent position = player.getComponent(PositionComponent.class);
+        position.rotation = 90;
+        position.position.set(Constants.HALF_WIDTH, Constants.HALF_HEIGHT);
+        player.getComponent(VelocityComponent.class).velocity.set(0, 0);
+        player.activate();
+    }
+
+    private void setGameMode(GameMode mode) {
+        gameData.gameMode = mode;
+        gameData.gameModeTimer = mode.getTimer();
+    }
+
+}