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Merge pull request #3 from tonyzhang617/foods
Implement food (cakes) for snakes
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110 changes: 110 additions & 0 deletions
110
core/src/com/tianyi/zhang/multiplayer/snake/elements/Foods.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| package com.tianyi.zhang.multiplayer.snake.elements; | ||
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| import com.tianyi.zhang.multiplayer.snake.helpers.Constants; | ||
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| import java.util.*; | ||
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| public class Foods { | ||
| public static final int WIDTH = Constants.WIDTH; | ||
| public static final int HEIGHT = Constants.HEIGHT; | ||
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| private final SortedSet<Integer> locations; | ||
| private final Random random; | ||
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| public Foods() { | ||
| locations = new TreeSet<Integer>(); | ||
| random = new Random(Constants.SEED); | ||
| } | ||
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| public Foods(Foods other) { | ||
| locations = new TreeSet<Integer>(other.locations); | ||
| random = new Random(Constants.SEED); | ||
| } | ||
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| public int getQuantity() { | ||
| return locations.size(); | ||
| } | ||
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| /** | ||
| * | ||
| * @param exclude an ascending sorted array of Integers to be excluded from the random generation | ||
| * @return | ||
| */ | ||
| public Integer generateHelper(List<Integer> exclude) { | ||
| Integer randomInt = Integer.valueOf(random.nextInt(HEIGHT * WIDTH - exclude.size())); | ||
| for (Integer e : exclude) { | ||
| if (randomInt.compareTo(e) < 0) { | ||
| break; | ||
| } | ||
| randomInt += 1; | ||
| } | ||
| return randomInt; | ||
| } | ||
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| public void generate(List<Snake> snakes) { | ||
| List<Integer> exclude = new LinkedList<Integer>(); | ||
| for (Snake s : snakes) { | ||
| List<Integer> coords = s.getCoordinates(); | ||
| for (int i = 0; i < coords.size(); i += 2) { | ||
| exclude.add(indexFromXy(coords.get(i), coords.get(i+1))); | ||
| } | ||
| } | ||
| exclude.addAll(locations); | ||
| Collections.sort(exclude); | ||
| for (int i = 1; i <= Constants.MAX_FOOD_QUANTITY - getQuantity(); ++i) { | ||
| Integer newLoc = generateHelper(exclude); | ||
| locations.add(newLoc); | ||
| int size = exclude.size(); | ||
| for (int j = 0; j <= size; ++j) { | ||
| if (j == size) { | ||
| exclude.add(newLoc); | ||
| } else if (newLoc < exclude.get(j)) { | ||
| exclude.add(j, newLoc); | ||
| break; | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| public void consumedBy(Snake snake) { | ||
| Integer headIndex = indexFromXy(snake.getHeadX(), snake.getHeadY()); | ||
| if (locations.contains(headIndex)) { | ||
| locations.remove(headIndex); | ||
| snake.grow(); | ||
| } | ||
| } | ||
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| public boolean shouldGenerate() { | ||
| return getQuantity() <= Constants.MIN_FOOD_QUANTITY; | ||
| } | ||
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| public Integer indexFromXy(Integer x, Integer y) { | ||
| return Integer.valueOf(y*WIDTH + x); | ||
| } | ||
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| public Integer xFromIndex(int index) { | ||
| return index - index / WIDTH * WIDTH; | ||
| } | ||
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| public int yFromIndex(int index) { | ||
| return index / WIDTH; | ||
| } | ||
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| public List<Integer> getLocations() { | ||
| List<Integer> result = new ArrayList<Integer>(locations.size() * 2); | ||
| Iterator<Integer> iterator = locations.iterator(); | ||
| while (iterator.hasNext()) { | ||
| Integer index = iterator.next(); | ||
| result.add(Integer.valueOf(xFromIndex(index))); | ||
| result.add(Integer.valueOf(yFromIndex(index))); | ||
| } | ||
| return Collections.unmodifiableList(result); | ||
| } | ||
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| public void setLocations(List<Integer> xyLocations) { | ||
| this.locations.clear(); | ||
| for (int i = 0; i < xyLocations.size(); i += 2) { | ||
| this.locations.add(indexFromXy(xyLocations.get(i), xyLocations.get(i+1))); | ||
| } | ||
| } | ||
| } |
80 changes: 80 additions & 0 deletions
80
core/src/com/tianyi/zhang/multiplayer/snake/elements/GameRenderer.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| package com.tianyi.zhang.multiplayer.snake.elements; | ||
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| import com.badlogic.gdx.Gdx; | ||
| import com.badlogic.gdx.graphics.Camera; | ||
| import com.badlogic.gdx.graphics.GL20; | ||
| import com.badlogic.gdx.graphics.Texture; | ||
| import com.badlogic.gdx.graphics.g2d.Sprite; | ||
| import com.badlogic.gdx.graphics.g2d.SpriteBatch; | ||
| import com.tianyi.zhang.multiplayer.snake.helpers.Constants; | ||
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| import java.util.HashMap; | ||
| import java.util.Map; | ||
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| import static com.tianyi.zhang.multiplayer.snake.elements.Grid.Block.FOOD; | ||
| import static com.tianyi.zhang.multiplayer.snake.elements.Grid.Block.GROUND; | ||
| import static com.tianyi.zhang.multiplayer.snake.elements.Grid.Block.PLAYER_SNAKE_BODY; | ||
| import static com.tianyi.zhang.multiplayer.snake.helpers.Constants.BLOCK_LENGTH; | ||
| import static com.tianyi.zhang.multiplayer.snake.helpers.Constants.BLOCK_OFFSET; | ||
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| public enum GameRenderer { | ||
| INSTANCE; | ||
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| private Map<Grid.Block, Sprite> spriteMap; | ||
| private SpriteBatch batch; | ||
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| private GameRenderer() { | ||
| Sprite playerSnakeBody = new Sprite(newTextureWithLinearFilter("player_snake_body.png")); | ||
| Sprite food = new Sprite(newTextureWithLinearFilter("cake.png")); | ||
| Sprite ground = new Sprite(newTextureWithLinearFilter("ground.png")); | ||
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| spriteMap = new HashMap<Grid.Block, Sprite>(); | ||
| spriteMap.put(PLAYER_SNAKE_BODY, playerSnakeBody); | ||
| spriteMap.put(FOOD, food); | ||
| spriteMap.put(GROUND, ground); | ||
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| batch = new SpriteBatch(); | ||
| } | ||
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| private static Texture newTextureWithLinearFilter(String imagePath) { | ||
| Texture texture = new Texture(Gdx.files.internal(imagePath)); | ||
| texture.setFilter(Texture.TextureFilter.Linear, Texture.TextureFilter.Linear); | ||
| return texture; | ||
| } | ||
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| public void clear() { | ||
| Gdx.gl.glClearColor(0, 0, 0, 1); | ||
| Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT); | ||
| } | ||
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| public void render(Grid grid, Camera camera) { | ||
| camera.update(); | ||
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| batch.setProjectionMatrix(camera.combined); | ||
| batch.begin(); | ||
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| for (int y = Grid.HEIGHT - 1; y >= 0; --y) { | ||
| for (int x = 0; x < Grid.WIDTH; ++x) { | ||
| switch (grid.getBlockByCoordinate(x, y)) { | ||
| case PLAYER_SNAKE_BODY: | ||
| case SNAKE_BODY: | ||
| batch.draw(spriteMap.get(PLAYER_SNAKE_BODY), x - Constants.BLOCK_OFFSET, y, BLOCK_LENGTH + BLOCK_OFFSET, BLOCK_LENGTH + BLOCK_OFFSET); | ||
| break; | ||
| case FOOD: | ||
| batch.draw(spriteMap.get(GROUND), x, y, BLOCK_LENGTH, BLOCK_LENGTH); | ||
| batch.draw(spriteMap.get(FOOD), x - Constants.BLOCK_OFFSET, y, BLOCK_LENGTH + BLOCK_OFFSET, BLOCK_LENGTH + BLOCK_OFFSET); | ||
| break; | ||
| case GROUND: | ||
| batch.draw(spriteMap.get(GROUND), x, y, BLOCK_LENGTH, BLOCK_LENGTH); | ||
| break; | ||
| } | ||
| } | ||
| } | ||
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| batch.end(); | ||
| } | ||
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| public void dispose() { | ||
| batch.dispose(); | ||
| } | ||
| } |
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