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Add melee enemy

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This commit is contained in:
Jens Pitkänen 2019-08-04 18:35:24 +03:00
parent 9ed3d98e21
commit 2d7232ed0c
14 changed files with 421 additions and 148 deletions
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366
Assets/Scenes/MainScene.unity
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2
Assets/Scripts/AI/BehaviourBranch.cs
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@ -5,6 +5,8 @@ namespace Saltosion.OneWeapon.AI {
[Serializable]
public class BehaviourBranch : BehaviourNode {
public Trigger Trigger;
// FIXME: Change these from arrays to just single ones
// BehaviourLeaf already has the capability to have multiple behaviours
public BehaviourNode[] TriggeredNodes;
public BehaviourNode[] NotTriggeredNodes;

21
Assets/Scripts/AI/Behaviours/Follow.cs
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@ -4,16 +4,31 @@ namespace Saltosion.OneWeapon.AI.Behaviours {
public class Follow : AIBehaviour {
public Transform Target;
public float CloseEnoughRadius;
public float TargetPositionUpdateFrequency = 5f;
private Vector2 TargetPosition;
private float TargetPositionUpdateCooldown;
private void Update() {
if (Target != null && TargetPositionUpdateCooldown <= 0) {
TargetPositionUpdateCooldown = 1.0f / TargetPositionUpdateFrequency;
TargetPosition = Target.position;
} else if (Target == null) {
TargetPositionUpdateCooldown = 0.0f;
} else {
TargetPositionUpdateCooldown -= Time.deltaTime;
}
}
public override bool CanBehave(Enemy subject) {
return true;
return Target != null;
}
public override bool Execute(Enemy subject) {
if (Target != null) {
Vector2 position = subject.transform.position;
Vector2 targetPosition = Target.position;
Vector2 delta = targetPosition - position;
Vector2 delta = TargetPosition - position;
if (delta.magnitude > CloseEnoughRadius) {
delta -= delta.normalized * CloseEnoughRadius;
subject.StartMovingTo(position + delta);

80
Assets/Scripts/AI/Behaviours/MeleeAttackFollowed.cs Normal file
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@ -0,0 +1,80 @@
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
namespace Saltosion.OneWeapon.AI.Behaviours {
public class MeleeAttackFollowed : AIBehaviour {
public Follow Follow;
[Tooltip("This should be at 0,0,0 locally by default.")]
public Transform AnimatableTransform;
public float MeleeRange;
public float AttackAnimationLength;
public float ReleaseAnimationLength;
public float CooldownLength;
private bool AttackHit;
private float AnimationProgress;
private float CooldownProgress;
private Vector3 LocalOrigin;
private void Start() {
if (AnimatableTransform.localPosition.magnitude != 0) {
Debug.LogWarning($"{name} has an animated melee attack, and AnimatableTransform is not at local origin!");
}
LocalOrigin = AnimatableTransform.localPosition;
Reset();
}
private void Reset() {
AttackHit = false;
AnimationProgress = 0.0f;
CooldownProgress = 1.0f;
AnimatableTransform.localPosition = LocalOrigin;
}
private void Update() {
if (CooldownProgress > 0) {
CurrentStatus = "Cooldown";
CooldownProgress -= Time.deltaTime / CooldownLength;
}
}
public override bool CanBehave(Enemy subject) {
return Follow.Target != null && (Follow.Target.position - subject.transform.position).magnitude <= MeleeRange;
}
public override bool Execute(Enemy subject) {
if (CooldownProgress > 0) {
return false;
}
Vector2 Root = AnimatableTransform.parent.position + LocalOrigin;
Vector2 Target = Follow.Target.transform.position;
if (!AttackHit) {
CurrentStatus = "Hit";
AnimationProgress += Time.deltaTime / AttackAnimationLength;
AnimatableTransform.position = Vector2.Lerp(Root, Target, AnimationProgress);
if (AnimationProgress >= 1.0f) {
// Attack hit, deal damage and start return animation
AttackHit = true;
AnimationProgress = 0.0f;
}
} else {
CurrentStatus = "Retreat";
AnimationProgress += Time.deltaTime / ReleaseAnimationLength;
AnimatableTransform.position = Vector2.Lerp(Target, Root, AnimationProgress);
if (AnimationProgress >= 1.0f) {
// Attack finished, reset
Reset();
}
}
return false;
}
private void OnDrawGizmosSelected() {
Gizmos.color = Color.red;
Gizmos.DrawWireSphere(transform.position, MeleeRange);
}
}
}

11
Assets/Scripts/AI/Behaviours/MeleeAttackFollowed.cs.meta Normal file
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0
Assets/Scripts/EnemyFollower.cs → Assets/Scripts/AI/EnemyFollower.cs
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2
Assets/Scripts/EnemyFollower.cs.meta → Assets/Scripts/AI/EnemyFollower.cs.meta
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@ -1,5 +1,5 @@
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18
Assets/Scripts/AI/PlayerFollower.cs Normal file
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@ -0,0 +1,18 @@
using UnityEngine;
using Saltosion.OneWeapon.AI;
namespace Saltosion.OneWeapon {
[RequireComponent(typeof(AI.Behaviours.Follow), typeof(AI.Triggers.PlayerSighted))]
public class PlayerFollower : MonoBehaviour {
public AI.Behaviours.Follow Follow;
public AI.Triggers.PlayerSighted PlayerSighted;
private void Update() {
if (PlayerSighted.Player == null) {
Follow.Target = null;
} else {
Follow.Target = PlayerSighted.Player.transform;
}
}
}
}

11
Assets/Scripts/AI/PlayerFollower.cs.meta Normal file
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13
Assets/Scripts/AI/Triggers/PlayerSighted.cs Normal file
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@ -0,0 +1,13 @@
using UnityEngine;
namespace Saltosion.OneWeapon.AI.Triggers {
public class PlayerSighted : Trigger {
public float Radius;
public Player Player { get; private set; }
public override bool IsTriggered(Enemy subject) {
Player = Util.GetClosestTo<Player>(transform, Radius, true);
return Player != null;
}
}
}

11
Assets/Scripts/AI/Triggers/PlayerSighted.cs.meta Normal file
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2
Assets/Scripts/Bullets/RevolverBullet.cs
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@ -47,7 +47,7 @@ namespace Saltosion.OneWeapon.Bullets {
Explodable Explodable = collider.GetComponent<Explodable>();
if (Explodable != null) {
Explodable.Explode(true);
} else {
} else if (collider.tag == "Environment") {
BloodLauncher.DebrisExplode(transform.position, Body.velocity.normalized * 0.7f, 5, 30f, 360);
}
}

29
Assets/Scripts/Util.cs
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@ -2,14 +2,35 @@ using UnityEngine;
namespace Saltosion.OneWeapon {
public class Util {
public static T GetClosestTo<T>(Transform target, float radius) where T : MonoBehaviour {
Collider2D[] NearbyColliders = Physics2D.OverlapCircleAll(target.position, radius);
public static T GetClosestTo<T>(Transform Searcher, float radius, bool needsLineOfSight = false) where T : MonoBehaviour {
Collider2D[] NearbyColliders = Physics2D.OverlapCircleAll(Searcher.position, radius);
float LowestDistance = float.PositiveInfinity;
T FoundTarget = null;
foreach (Collider2D Collider in NearbyColliders) {
float Distance = (Collider.transform.position - target.position).magnitude;
if (Collider.gameObject == Searcher.gameObject) {
continue;
}
Vector2 Delta = (Collider.transform.position - Searcher.position);
float Distance = Delta.magnitude;
T TargetComponent = Collider.GetComponent<T>();
if (TargetComponent != null && Distance < LowestDistance && Collider.gameObject != target.gameObject) {
RaycastHit2D[] Hits = Physics2D.RaycastAll(Searcher.position, Delta.normalized, Distance);
bool LineOfSightObstructed;
if (needsLineOfSight) {
LineOfSightObstructed = false;
foreach (RaycastHit2D Hit in Hits) {
if (Hit.collider != Collider && Hit.transform != Searcher) {
// Hit something between the target and the searcher
LineOfSightObstructed = true;
break;
}
}
} else {
LineOfSightObstructed = false;
}
if (TargetComponent != null && !LineOfSightObstructed && Distance < LowestDistance) {
LowestDistance = Distance;
FoundTarget = TargetComponent;
}

3
ProjectSettings/TagManager.asset
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@ -3,7 +3,8 @@
--- !u!78 &1
TagManager:
serializedVersion: 2
tags: []
tags:
- Environment
layers:
- Default
- TransparentFX