124 lines
3.2 KiB
C#
124 lines
3.2 KiB
C#
using Microsoft.Xna.Framework;
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using Microsoft.Xna.Framework.Graphics;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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namespace Barotrauma.Lights
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{
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class LightSource
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{
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private static Texture2D lightTexture;
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public List<ConvexHull> hullsInRange;
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private Color color;
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private float range;
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private Texture2D texture;
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public Sprite LightSprite;
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public Entity Submarine;
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//what was the range of the light when HullsInRange were last updated
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private float prevHullUpdateRange;
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private Vector2 position;
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public Vector2 Position
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{
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get { return position; }
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set
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{
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if (position == value) return;
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position = value;
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UpdateHullsInRange();
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}
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}
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public Vector2 WorldPosition
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{
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get { return (Submarine == null) ? position : position + Submarine.Position; }
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}
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public static Texture2D LightTexture
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{
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get
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{
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if (lightTexture == null)
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{
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lightTexture = TextureLoader.FromFile("Content/Lights/light.png");
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}
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return lightTexture;
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}
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}
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public Color Color
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{
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get { return color; }
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set { color = value; }
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}
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public float Range
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{
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get { return range; }
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set
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{
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range = MathHelper.Clamp(value, 0.0f, 2048.0f);
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if (Math.Abs(prevHullUpdateRange - range)<5.0f) return;
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UpdateHullsInRange();
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prevHullUpdateRange = range;
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}
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}
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public LightSource(Vector2 position, float range, Color color, Submarine submarine)
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{
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hullsInRange = new List<ConvexHull>();
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this.Submarine = submarine;
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this.position = position;
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this.range = range;
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this.color = color;
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texture = LightTexture;
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GameMain.LightManager.AddLight(this);
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}
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public void UpdateHullsInRange()
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{
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hullsInRange.Clear();
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if (range < 1.0f || color.A < 0.01f) return;
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foreach (ConvexHull ch in ConvexHull.list)
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{
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if (MathUtils.CircleIntersectsRectangle(position, range, ch.BoundingBox)) hullsInRange.Add(ch);
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}
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}
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public void Draw(SpriteBatch spriteBatch)
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{
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Vector2 center = new Vector2(LightTexture.Width / 2, LightTexture.Height / 2);
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float scale = range / (lightTexture.Width / 2.0f);
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spriteBatch.Draw(lightTexture, new Vector2(WorldPosition.X, -WorldPosition.Y), null, color, 0, center, scale, SpriteEffects.None, 1);
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if (LightSprite != null)
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{
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LightSprite.Draw(spriteBatch, new Vector2(WorldPosition.X, -WorldPosition.Y), Color);
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}
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}
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public void Remove()
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{
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GameMain.LightManager.RemoveLight(this);
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}
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}
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}
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