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- using System.Collections.Generic;
- using FarseerPhysics.Collision.Shapes;
- using FarseerPhysics.Common;
- using FarseerPhysics.Dynamics;
- using FarseerPhysics.Factories;
- using Microsoft.Xna.Framework;
- using Microsoft.Xna.Framework.Graphics;
- namespace FarseerPhysics.SamplesFramework
- {
- public class Pyramid
- {
- private Sprite _box;
- private List<Body> _boxes;
- private PhysicsGameScreen _screen;
- public Pyramid(World world, PhysicsGameScreen screen, Vector2 position, int count, float density)
- {
- Vertices rect = PolygonTools.CreateRectangle(0.5f, 0.5f);
- PolygonShape shape = new PolygonShape(rect, density);
- Vector2 rowStart = position;
- rowStart.Y -= 0.5f + count * 1.1f;
- Vector2 deltaRow = new Vector2(-0.625f, 1.1f);
- const float spacing = 1.25f;
- _boxes = new List<Body>();
- for (int i = 0; i < count; ++i)
- {
- Vector2 pos = rowStart;
- for (int j = 0; j < i + 1; ++j)
- {
- Body body = BodyFactory.CreateBody(world);
- body.BodyType = BodyType.Dynamic;
- body.Position = pos;
- body.CreateFixture(shape);
- _boxes.Add(body);
- pos.X += spacing;
- }
- rowStart += deltaRow;
- }
- _screen = screen;
- //GFX
- AssetCreator creator = _screen.ScreenManager.Assets;
- _box = new Sprite(creator.TextureFromVertices(rect, MaterialType.Dots, Color.SaddleBrown, 2f));
- }
- public void Draw()
- {
- SpriteBatch batch = _screen.ScreenManager.SpriteBatch;
- for (int i = 0; i < _boxes.Count; ++i)
- {
- batch.Draw(_box.Texture, ConvertUnits.ToDisplayUnits(_boxes[i].Position), null,
- Color.White, _boxes[i].Rotation, _box.Origin, 1f, SpriteEffects.None, 0f);
- }
- }
- }
- }
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