Luis Gonzalez
90 lines
3.0 KiB
C#
90 lines
3.0 KiB
C#
#if RUKHANKA_SAMPLES_WITH_CHARACTER_CONTROLLER
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using Unity.Burst;
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using Unity.Entities;
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using Unity.Mathematics;
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using Unity.Physics;
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using Unity.Transforms;
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using UnityEngine;
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using UnityEngine.InputSystem;
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using Random = Unity.Mathematics.Random;
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/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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namespace Rukhanka.Samples
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{
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public struct SimpleCannonComponent: IComponentData
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{
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public float distanceFromTarget;
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public float startSpeed;
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public Entity cannonBallPrefab;
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public Entity targetEntity;
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}
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/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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[BurstCompile]
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public partial struct SimpleCannonSystem: ISystem
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{
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Random rng;
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/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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public void OnCreate(ref SystemState ss)
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{
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rng = new Random(0x12312313);
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}
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/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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float3 GetWorldPosition(ref SystemState ss, Entity e)
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{
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var targetPose = SystemAPI.GetComponent<LocalTransform>(e);
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var bt = new BoneTransform(targetPose);
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while (SystemAPI.HasComponent<Parent>(e))
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{
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var pe = SystemAPI.GetComponent<Parent>(e);
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var parentPose = SystemAPI.GetComponent<LocalTransform>(pe.Value);
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var pbt = new BoneTransform(parentPose);
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bt = BoneTransform.Multiply(pbt, bt);
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e = pe.Value;
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}
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return bt.pos;
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}
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/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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public void OnUpdate(ref SystemState ss)
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{
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if (!Keyboard.current.fKey.wasPressedThisFrame)
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return;
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var ecbs = SystemAPI.GetSingleton<BeginSimulationEntityCommandBufferSystem.Singleton>();
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var ecb = ecbs.CreateCommandBuffer(ss.WorldUnmanaged);
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foreach (var (ccc, _) in SystemAPI.Query<SimpleCannonComponent>().WithEntityAccess())
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{
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var targetPos = GetWorldPosition(ref ss, ccc.targetEntity);
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var randomDir = rng.NextFloat3Direction();
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randomDir.y = randomDir.y * 0.5f + 0.5f;
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var cannonEntity = ss.EntityManager.Instantiate(ccc.cannonBallPrefab);
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var l2w = new LocalTransform()
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{
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Position = targetPos + randomDir * ccc.distanceFromTarget,
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Rotation = quaternion.identity,
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Scale = 1
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};
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var pv = new PhysicsVelocity()
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{
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Angular = float3.zero,
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Linear = -randomDir * ccc.startSpeed
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};
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SystemAPI.SetComponent(cannonEntity, pv);
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SystemAPI.SetComponent(cannonEntity, l2w);
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ecb.AddComponent<CannonballTag>(cannonEntity);
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}
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}
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}
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}
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#endif |