144 lines
4.8 KiB
C#
144 lines
4.8 KiB
C#
using FarseerPhysics;
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using Microsoft.Xna.Framework;
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using Subsurface.Lights;
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using System;
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using System.Collections.Generic;
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using System.Xml.Linq;
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namespace Subsurface
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{
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class Explosion
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{
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private Vector2 position;
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private Attack attack;
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private float force;
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private LightSource light;
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public float CameraShake;
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//public Explosion(Vector2 position, float range, float damage, float structureDamage, float stun = 0.0f, float force = 0.0f)
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//{
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// this.position = position;
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// attack = new Attack(,);
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// this.force = force;
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//}
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public Explosion(XElement element)
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{
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attack = new Attack(element);
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force = ToolBox.GetAttributeFloat(element, "force", 0.0f);
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CameraShake = attack.Range*10.0f;
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}
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public void Explode()
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{
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Explode(position);
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}
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public void Explode(Vector2 simPosition)
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{
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Vector2 displayPosition = ConvertUnits.ToDisplayUnits(simPosition);
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GameMain.ParticleManager.CreateParticle("shockwave", displayPosition,
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Vector2.Zero, 0.0f);
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for (int i = 0; i < attack.Range * 10; i++)
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{
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GameMain.ParticleManager.CreateParticle("spark", displayPosition,
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Rand.Vector(Rand.Range(500.0f, 800.0f)), 0.0f);
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GameMain.ParticleManager.CreateParticle("explosionfire", displayPosition + Rand.Vector(50f),
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Rand.Vector(Rand.Range(50f, 100.0f)), 0.0f);
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}
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float displayRange = ConvertUnits.ToDisplayUnits(attack.Range);
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light = new LightSource(displayPosition, displayRange, Color.LightYellow);
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CoroutineManager.StartCoroutine(DimLight());
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float cameraDist = Vector2.Distance(GameMain.GameScreen.Cam.Position, displayPosition)/2.0f;
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GameMain.GameScreen.Cam.Shake = CameraShake * Math.Max((displayRange - cameraDist)/displayRange, 0.0f);
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if (attack.GetStructureDamage(1.0f) > 0.0f)
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{
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List<Structure> structureList = new List<Structure>();
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float dist = 600.0f;
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foreach (MapEntity entity in MapEntity.mapEntityList)
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{
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Structure structure = entity as Structure;
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if (structure == null) continue;
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if (structure.HasBody &&
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!structure.IsPlatform &&
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Vector2.Distance(structure.Position, displayPosition) < dist*3.0f)
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{
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structureList.Add(structure);
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}
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}
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foreach (Structure structure in structureList)
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{
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for (int i = 0; i < structure.SectionCount; i++)
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{
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float distFactor = 1.0f - (Vector2.Distance(structure.SectionPosition(i), displayPosition) / displayRange);
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if (distFactor > 0.0f) structure.AddDamage(i, attack.GetStructureDamage(1.0f)*distFactor);
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}
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}
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}
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if (force == 0.0f && attack.Stun == 0.0f && attack.GetDamage(1.0f) == 0.0f) return;
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foreach (Character c in Character.CharacterList)
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{
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float dist = Vector2.Distance(c.SimPosition, simPosition);
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if (dist > attack.Range) continue;
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float distFactor = 1.0f - dist / attack.Range;
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foreach (Limb limb in c.AnimController.Limbs)
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{
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distFactor = 1.0f - Vector2.Distance(limb.SimPosition, simPosition)/attack.Range;
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c.AddDamage(limb.SimPosition, DamageType.None,
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attack.GetDamage(1.0f) / c.AnimController.Limbs.Length * distFactor, 0.0f, attack.Stun * distFactor, true);
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if (force>0.0f)
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{
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limb.body.ApplyLinearImpulse(Vector2.Normalize(limb.SimPosition - simPosition) * distFactor * force);
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}
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}
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}
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}
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private IEnumerable<object> DimLight()
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{
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float currBrightness= 1.0f;
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float startRange = light.Range;
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while (light.Color.A > 0.0f)
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{
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light.Color = new Color(light.Color.R, light.Color.G, light.Color.B, currBrightness);
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light.Range = startRange * currBrightness;
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currBrightness -= 0.05f;
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yield return CoroutineStatus.Running;
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}
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light.Remove();
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yield return CoroutineStatus.Success;
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}
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}
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}
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