Added DirectionTool used to test com.riiablo.engine.Direction

tools/src/com/riiablo/engine/DirectionTool.java

@@ -0,0 +1,142 @@
+package com.riiablo.engine;
+
+import com.badlogic.gdx.Application;
+import com.badlogic.gdx.ApplicationAdapter;
+import com.badlogic.gdx.Gdx;
+import com.badlogic.gdx.InputAdapter;
+import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
+import com.badlogic.gdx.backends.lwjgl.LwjglApplicationConfiguration;
+import com.badlogic.gdx.graphics.GL20;
+import com.badlogic.gdx.graphics.g2d.Batch;
+import com.badlogic.gdx.graphics.g2d.BitmapFont;
+import com.badlogic.gdx.graphics.g2d.SpriteBatch;
+import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
+import com.badlogic.gdx.math.MathUtils;
+import com.badlogic.gdx.math.Vector2;
+import com.badlogic.gdx.utils.StringBuilder;
+import com.riiablo.camera.IsometricCamera;
+import com.riiablo.map.DT1;
+
+import java.util.Arrays;
+
+public class DirectionTool extends ApplicationAdapter {
+  private static final String TAG = "DirectionTool";
+
+  public static void main(String[] args) {
+    LwjglApplicationConfiguration config = new LwjglApplicationConfiguration();
+    config.title = TAG;
+    config.resizable = false;
+    config.width = 256;
+    config.height = 256;
+    config.vSyncEnabled = false;
+    config.foregroundFPS = config.backgroundFPS = 144;
+    new LwjglApplication(new DirectionTool(), config);
+  }
+
+  Batch batch;
+  BitmapFont font;
+  ShapeRenderer shapes;
+  float width, height;
+  float x1, y1;
+  float x2, y2;
+  StringBuilder builder = new StringBuilder();
+  IsometricCamera iso;
+  final Vector2 tmpVec2a = new Vector2();
+  final Vector2 tmpVec2b = new Vector2();
+
+  DirectionTool() {}
+
+  @Override
+  public void create() {
+    Gdx.app.setLogLevel(Application.LOG_DEBUG);
+
+    iso = new IsometricCamera();
+    iso.setToOrtho(false);
+    iso.offset(0, -DT1.Tile.SUBTILE_HEIGHT50);
+    iso.set(0, 0);
+    iso.update();
+    tmpVec2a.set(iso.position);
+
+    font = new BitmapFont();
+    batch = new SpriteBatch();
+    shapes = new ShapeRenderer();
+
+    width  = Gdx.graphics.getWidth();
+    height = Gdx.graphics.getHeight();
+    x1 = width  / 2;
+    y1 = height / 2;
+
+    Gdx.input.setInputProcessor(new InputAdapter() {
+      @Override
+      public boolean touchDown(int screenX, int screenY, int pointer, int button) {
+        update(screenX, screenY);
+        return true;
+      }
+
+      @Override
+      public boolean touchDragged(int screenX, int screenY, int pointer) {
+        update(screenX, screenY);
+        return true;
+      }
+
+      void update(int screenX, int screenY) {
+        iso.agg(tmpVec2b.set(screenX, screenY)).unproject().toWorld();
+        x2 = screenX;
+        y2 = height - screenY;
+      }
+    });
+
+    print(Direction.RADIANS_8);
+    print(Direction.RADIANS_8M);
+  }
+
+  void print(float[] a) {
+    Gdx.app.log(TAG, Arrays.toString(a));
+  }
+
+  @Override
+  public void render() {
+    Gdx.gl.glClearColor(0.3f, 0.3f, 0.3f, 1.0f);
+    Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
+
+    float radius = 64;
+    float angle = MathUtils.atan2(y2 - y1, x2 - x1);
+    float x = radius * MathUtils.cos(angle);
+    float y = radius * MathUtils.sin(angle);
+
+    float rads = tmpVec2b.sub(tmpVec2a).nor().angleRad();
+    builder.setLength(0);
+    builder
+        .append("x,y: ").append("(" + x2 + "," + y2 + ")").append('\n')
+        .append("angle: ").append(rads).append('\n')
+        .append("dir4: ").append(Direction.radiansToDirection(rads, 4)).append('\n')
+        .append("dir8: ").append(Direction.radiansToDirection(rads, 8)).append('\n')
+        .append("dir16: ").append(Direction.radiansToDirection(rads, 16)).append('\n')
+        .append("dir32: ").append(Direction.radiansToDirection(rads, 32)).append('\n');
+
+    shapes.begin(ShapeRenderer.ShapeType.Line);
+    drawDiamond(shapes, x1 - 80, y1 - 40, 160, 80);
+    shapes.line(x1, y1, x1 + x, y1 + y);
+    shapes.end();
+
+    batch.begin();
+    font.draw(batch, builder.toString(), 0, Gdx.graphics.getHeight());
+    batch.end();
+  }
+
+  @Override
+  public void dispose() {
+    font.dispose();
+    batch.dispose();
+    shapes.dispose();
+  }
+
+  static void drawDiamond(ShapeRenderer shapes, float x, float y, int width, int height) {
+    int hw = width >>> 1;
+    int hh = height >>> 1;
+    shapes.line(x, y + hh, x + hw, y + height);
+    shapes.line(x + hw, y + height, x + width, y + hh);
+    shapes.line(x + width, y + hh, x + hw, y);
+    shapes.line(x + hw, y, x, y + hh);
+  }
+}