/**
* Sets polygon with repeating texture region, the size of repeating grid is equal to region size
*
* @param region - region to repeat
* @param vertices - cw vertices of polygon
* @param density - number of regions per polygon width bound
*/
public void setPolygon(TextureRegion region, float[] vertices, float density) {
this.region = region;
vertices = offset(vertices);
Polygon polygon = new Polygon(vertices);
Polygon tmpPoly = new Polygon();
Polygon intersectionPoly = new Polygon();
EarClippingTriangulator triangulator = new EarClippingTriangulator();
int idx;
Rectangle boundRect = polygon.getBoundingRectangle();
if (density == -1) density = boundRect.getWidth() / region.getRegionWidth();
float regionAspectRatio = (float) region.getRegionHeight() / (float) region.getRegionWidth();
cols = (int) (Math.ceil(density));
gridWidth = boundRect.getWidth() / density;
gridHeight = regionAspectRatio * gridWidth;
rows = (int) Math.ceil(boundRect.getHeight() / gridHeight);
for (int col = 0; col < cols; col++) {
for (int row = 0; row < rows; row++) {
float[] verts = new float[8];
idx = 0;
verts[idx++] = col * gridWidth;
verts[idx++] = row * gridHeight;
verts[idx++] = (col) * gridWidth;
verts[idx++] = (row + 1) * gridHeight;
verts[idx++] = (col + 1) * gridWidth;
verts[idx++] = (row + 1) * gridHeight;
verts[idx++] = (col + 1) * gridWidth;
verts[idx] = (row) * gridHeight;
tmpPoly.setVertices(verts);
Intersector.intersectPolygons(polygon, tmpPoly, intersectionPoly);
verts = intersectionPoly.getVertices();
if (verts.length > 0) {
parts.add(snapToGrid(verts));
ShortArray arr = triangulator.computeTriangles(verts);
indices.add(arr.toArray());
} else {
// adding null for key consistancy, needed to get col/row from key
// the other alternative is to make parts - IntMap<FloatArray>
parts.add(null);
}
}
}
buildVertices();
}
// TODO: Refactor into multiple functions
@Override
public Entity buildEntity() {
Entity player = new Entity();
// Define the body
BodyDef playerBody = new BodyDef();
playerBody.type = BodyDef.BodyType.DynamicBody;
playerBody.position.set(0, 0);
// Create the components
PhysicsComponent p = new PhysicsComponent(physicsWorld.createBody(playerBody), player);
RenderComponent r = new RenderComponent();
KeyboardInputComponent i = new KeyboardInputComponent();
MoveAction m = new MoveAction();
// Properties for the components
Polygon sprite =
new Polygon(
new float[] {
0, 5,
3, -3,
0, -2,
-3, -3
});
PolygonShape fixShape = new PolygonShape();
fixShape.set(sprite.getVertices());
FixtureDef def = new FixtureDef();
def.shape = fixShape;
def.density = 1.2f;
def.friction = 0f;
def.restitution = 0.1f;
// Apply properties
p.physicsBody.createFixture(def);
r.renderColor = Color.BLUE;
r.sprite = sprite;
m.lin_v = 5f;
m.rot_v = 2f;
// Add to player
player.add(p);
player.add(r);
player.add(i);
player.add(m);
return player;
}
public static void deletePoint(Polygon poly, int index) {
float verts[] = poly.getVertices();
if (verts.length < 8) return;
int length = verts.length;
float destination[] = new float[length - 2];
// index = index * 2;
System.arraycopy(verts, 0, destination, 0, index);
System.arraycopy(verts, index + 2, destination, index, length - index - 2);
poly.setVertices(destination);
}
public static void addPoint(Polygon poly, float x, float y, int index) {
float verts[] = poly.getVertices();
x -= poly.getX();
y -= poly.getY();
int length = verts.length;
float destination[] = new float[length + 2];
System.arraycopy(verts, 0, destination, 0, index);
destination[index] = x;
destination[index + 1] = y;
System.arraycopy(verts, index, destination, index + 2, length - index);
poly.setVertices(destination);
}
public TouchableEntity getTouchableEntity(AgentEntity agentEntity) {
TouchableEntity touchableEntity = new TouchableEntity();
DamageEffect damageEffect = new DamageEffect();
damageEffect.setDamage(damage);
damageEffect.setOriginatingAgent(agentEntity);
touchableEntity.setCollisionPolygon(new Polygon(attackPolygon.getVertices()));
Vector2 attackPosition = new Vector2();
if (agentEntity.isFacingLeft()) {
attackPosition
.add(agentEntity.getLeftBoundingSide())
.sub(attackPolygon.getBoundingRectangle().width, 0);
} else {
attackPosition.add(agentEntity.getRightBoundingSide());
}
touchableEntity.setPosition(attackPosition);
return touchableEntity;
}
