Basic ground enemy AI, crosshair + laser for aiming

scenes/ground.tscn

@@ -6,7 +6,7 @@
 [ext_resource type="Texture2D" uid="uid://c0cyhybh30ogt" path="res://textures/player-ground-sheet.png" id="4_2c1ag"]
 [ext_resource type="Texture2D" uid="uid://csrlh1sbdroud" path="res://textures/pistol.png" id="5_8gbjj"]
 [ext_resource type="AudioStream" uid="uid://5x8fl2mk082h" path="res://sounds/gunshot_1.mp3" id="6_2c1ag"]
-[ext_resource type="Script" uid="uid://bv7ymrwe6ciax" path="res://scripts/enemy_ground.gd" id="7_modao"]
+[ext_resource type="Texture2D" uid="uid://coflscl1w4vtr" path="res://textures/crosshair.png" id="7_modao"]
 [ext_resource type="Shader" uid="uid://d3hoh7ec2w8q7" path="res://scripts/outline.gdshader" id="7_vuhkc"]
 [ext_resource type="Shader" uid="uid://d2e0541hawkml" path="res://scripts/vignette.gdshader" id="9_5vwr8"]
 [ext_resource type="Shader" uid="uid://bk7q00br1ms30" path="res://scripts/retro.gdshader" id="9_257nh"]
@@ -160,6 +160,15 @@ texture = ExtResource("5_8gbjj")
 [node name="Gunshot" type="AudioStreamPlayer2D" parent="PlayerGround/HeldItem"]
 stream = ExtResource("6_2c1ag")
 
+[node name="Crosshair" type="Sprite2D" parent="PlayerGround/HeldItem"]
+scale = Vector2(2, 2)
+texture = ExtResource("7_modao")
+
+[node name="Line" type="Line2D" parent="PlayerGround/HeldItem"]
+points = PackedVector2Array(0, 0, 512, 0)
+width = 2.0
+default_color = Color(1, 0, 0, 1)
+
 [node name="Hitbox" type="Area2D" parent="PlayerGround"]
 collision_layer = 2
 collision_mask = 2
@@ -168,43 +177,6 @@ collision_mask = 2
 shape = SubResource("CapsuleShape2D_8gbjj")
 debug_color = Color(1, 0, 0, 0.41960785)
 
-[node name="EnemyTest" type="CharacterBody2D" parent="."]
-position = Vector2(349, -58)
-script = ExtResource("7_modao")
-
-[node name="Sprite" type="AnimatedSprite2D" parent="EnemyTest"]
-scale = Vector2(2, 2)
-sprite_frames = SubResource("SpriteFrames_aergo")
-
-[node name="Camera" type="Camera2D" parent="EnemyTest"]
-position_smoothing_enabled = true
-
-[node name="CollisionShape" type="CollisionShape2D" parent="EnemyTest"]
-position = Vector2(0, 40)
-shape = SubResource("CapsuleShape2D_176r3")
-
-[node name="HeldItem" type="Node2D" parent="EnemyTest"]
-
-[node name="Cast" type="RayCast2D" parent="EnemyTest/HeldItem"]
-target_position = Vector2(2048, 0)
-collision_mask = 2
-collide_with_areas = true
-
-[node name="Sprite" type="Sprite2D" parent="EnemyTest/HeldItem"]
-position = Vector2(56, 0)
-texture = ExtResource("5_8gbjj")
-
-[node name="Gunshot" type="AudioStreamPlayer2D" parent="EnemyTest/HeldItem"]
-stream = ExtResource("6_2c1ag")
-
-[node name="Hitbox" type="Area2D" parent="EnemyTest"]
-collision_layer = 2
-collision_mask = 2
-
-[node name="CollisionShape" type="CollisionShape2D" parent="EnemyTest/Hitbox"]
-shape = SubResource("CapsuleShape2D_8gbjj")
-debug_color = Color(1, 0, 0, 0.41960785)
-
 [node name="UI" type="CanvasLayer" parent="."]
 
 [node name="Vignette" type="ColorRect" parent="UI"]

scenes/locations/space_station_1.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=47 format=4 uid="uid://dfjnikjjynj0e"]
+[gd_scene load_steps=57 format=4 uid="uid://dfjnikjjynj0e"]
 
 [ext_resource type="AudioStream" uid="uid://dgv01wy8r7ej2" path="res://sounds/uglyburger.mp3" id="1_kpeax"]
 [ext_resource type="Texture2D" uid="uid://btcap3oh2dqt8" path="res://textures/wall_tile.png" id="2_4uppp"]
@@ -20,6 +20,9 @@
 [ext_resource type="Texture2D" uid="uid://ktvnppfhchoj" path="res://textures/bed.png" id="17_50pdk"]
 [ext_resource type="Texture2D" uid="uid://cmv4wou5glrl7" path="res://textures/bed_foot.png" id="18_83fjc"]
 [ext_resource type="Script" uid="uid://cva4b60iqolqy" path="res://scripts/story_handler_1.gd" id="19_akl5n"]
+[ext_resource type="Script" uid="uid://bv7ymrwe6ciax" path="res://scripts/enemy_ground.gd" id="21_tvsp8"]
+[ext_resource type="Texture2D" uid="uid://csrlh1sbdroud" path="res://textures/pistol.png" id="22_6l1ru"]
+[ext_resource type="AudioStream" uid="uid://5x8fl2mk082h" path="res://sounds/gunshot_1.mp3" id="23_janyw"]
 
 [sub_resource type="CanvasItemMaterial" id="CanvasItemMaterial_vmimc"]
 light_mode = 1
@@ -39,36 +42,65 @@ texture = ExtResource("3_ir5n7")
 texture_region_size = Vector2i(32, 32)
 0:0/0 = 0
 
+[sub_resource type="NavigationPolygon" id="NavigationPolygon_tvsp8"]
+vertices = PackedVector2Array(16, 16, -16, 16, -16, -16, 16, -16)
+polygons = Array[PackedInt32Array]([PackedInt32Array(0, 1, 2, 3)])
+outlines = Array[PackedVector2Array]([PackedVector2Array(-16, -16, 16, -16, 16, 16, -16, 16)])
+agent_radius = 0.0
+
 [sub_resource type="TileSetAtlasSource" id="TileSetAtlasSource_bhfm6"]
 texture = ExtResource("4_50pdk")
 texture_region_size = Vector2i(32, 32)
 0:0/0 = 0
+0:0/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_tvsp8")
+
+[sub_resource type="NavigationPolygon" id="NavigationPolygon_6l1ru"]
+vertices = PackedVector2Array(16, 16, -16, 16, -16, -16, 16, -16)
+polygons = Array[PackedInt32Array]([PackedInt32Array(0, 1, 2, 3)])
+outlines = Array[PackedVector2Array]([PackedVector2Array(-16, -16, 16, -16, 16, 16, -16, 16)])
+agent_radius = 0.0
 
 [sub_resource type="TileSetAtlasSource" id="TileSetAtlasSource_kl2qk"]
 texture = ExtResource("5_83fjc")
 texture_region_size = Vector2i(32, 32)
 0:0/0 = 0
+0:0/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_6l1ru")
 
 [sub_resource type="TileSetAtlasSource" id="TileSetAtlasSource_ga4dw"]
 texture = ExtResource("6_akl5n")
 texture_region_size = Vector2i(32, 32)
 0:0/0 = 0
 
+[sub_resource type="NavigationPolygon" id="NavigationPolygon_janyw"]
+vertices = PackedVector2Array(16, 16, -16, 16, -16, -16, 16, -16)
+polygons = Array[PackedInt32Array]([PackedInt32Array(0, 1, 2, 3)])
+outlines = Array[PackedVector2Array]([PackedVector2Array(-16, -16, 16, -16, 16, 16, -16, 16)])
+agent_radius = 0.0
+
 [sub_resource type="TileSetAtlasSource" id="TileSetAtlasSource_ir5n7"]
 texture = ExtResource("7_4uppp")
 texture_region_size = Vector2i(32, 32)
 0:0/0 = 0
+0:0/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_janyw")
+
+[sub_resource type="NavigationPolygon" id="NavigationPolygon_vmpfq"]
+vertices = PackedVector2Array(16, 16, -16, 16, -16, -16, 16, -16)
+polygons = Array[PackedInt32Array]([PackedInt32Array(0, 1, 2, 3)])
+outlines = Array[PackedVector2Array]([PackedVector2Array(-16, -16, 16, -16, 16, 16, -16, 16)])
+agent_radius = 0.0
 
 [sub_resource type="TileSetAtlasSource" id="TileSetAtlasSource_50pdk"]
 texture = ExtResource("8_ir5n7")
 texture_region_size = Vector2i(32, 32)
 0:0/0 = 0
+0:0/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_vmpfq")
 
 [sub_resource type="TileSet" id="TileSet_uxsmb"]
 tile_size = Vector2i(32, 32)
 occlusion_layer_0/light_mask = 1
 physics_layer_0/collision_layer = 3
 physics_layer_0/collision_mask = 3
+navigation_layer_0/layers = 1
 sources/0 = SubResource("TileSetAtlasSource_k741b")
 sources/1 = SubResource("TileSetAtlasSource_mdep3")
 sources/2 = SubResource("TileSetAtlasSource_bhfm6")
@@ -200,6 +232,59 @@ size = Vector2(40, 40)
 [sub_resource type="RectangleShape2D" id="RectangleShape2D_83fjc"]
 size = Vector2(61.5, 21)
 
+[sub_resource type="SpriteFrames" id="SpriteFrames_vmpfq"]
+animations = [{
+"frames": [{
+"duration": 1.0,
+"texture": SubResource("AtlasTexture_jo68p")
+}, {
+"duration": 1.0,
+"texture": SubResource("AtlasTexture_6gpfv")
+}, {
+"duration": 1.0,
+"texture": SubResource("AtlasTexture_fd1o3")
+}, {
+"duration": 1.0,
+"texture": SubResource("AtlasTexture_yqhs4")
+}],
+"loop": true,
+"name": &"default",
+"speed": 5.0
+}, {
+"frames": [{
+"duration": 1.0,
+"texture": SubResource("AtlasTexture_jo68p")
+}],
+"loop": true,
+"name": &"idle",
+"speed": 5.0
+}, {
+"frames": [{
+"duration": 1.0,
+"texture": SubResource("AtlasTexture_6gpfv")
+}, {
+"duration": 1.0,
+"texture": SubResource("AtlasTexture_jo68p")
+}, {
+"duration": 1.0,
+"texture": SubResource("AtlasTexture_fd1o3")
+}, {
+"duration": 1.0,
+"texture": SubResource("AtlasTexture_yqhs4")
+}],
+"loop": true,
+"name": &"walk",
+"speed": 7.0
+}]
+
+[sub_resource type="CapsuleShape2D" id="CapsuleShape2D_jxmby"]
+radius = 21.0
+height = 48.0
+
+[sub_resource type="CapsuleShape2D" id="CapsuleShape2D_tvsp8"]
+radius = 25.0
+height = 148.0
+
 [node name="SpaceStation1" type="Node2D"]
 
 [node name="Uglyburger" type="AudioStreamPlayer" parent="."]
@@ -356,6 +441,50 @@ texture = ExtResource("18_83fjc")
 position = Vector2(-0.25, 37.5)
 shape = SubResource("RectangleShape2D_83fjc")
 
+[node name="EnemyTest" type="CharacterBody2D" parent="."]
+position = Vector2(-162, -537)
+script = ExtResource("21_tvsp8")
+
+[node name="Sprite" type="AnimatedSprite2D" parent="EnemyTest"]
+scale = Vector2(2, 2)
+sprite_frames = SubResource("SpriteFrames_vmpfq")
+
+[node name="CollisionShape" type="CollisionShape2D" parent="EnemyTest"]
+position = Vector2(0, 40)
+shape = SubResource("CapsuleShape2D_jxmby")
+
+[node name="LineOfSight" type="RayCast2D" parent="EnemyTest"]
+target_position = Vector2(2048, 0)
+collision_mask = 2
+collide_with_areas = true
+
+[node name="HeldItem" type="Node2D" parent="EnemyTest"]
+
+[node name="Cast" type="RayCast2D" parent="EnemyTest/HeldItem"]
+target_position = Vector2(2048, 0)
+collision_mask = 2
+collide_with_areas = true
+
+[node name="Sprite" type="Sprite2D" parent="EnemyTest/HeldItem"]
+position = Vector2(56, 0)
+texture = ExtResource("22_6l1ru")
+
+[node name="Gunshot" type="AudioStreamPlayer2D" parent="EnemyTest/HeldItem"]
+stream = ExtResource("23_janyw")
+
+[node name="Hitbox" type="Area2D" parent="EnemyTest"]
+collision_layer = 2
+collision_mask = 2
+
+[node name="CollisionShape" type="CollisionShape2D" parent="EnemyTest/Hitbox"]
+shape = SubResource("CapsuleShape2D_tvsp8")
+debug_color = Color(1, 0, 0, 0.41960785)
+
+[node name="Navagent" type="NavigationAgent2D" parent="EnemyTest"]
+path_desired_distance = 34.0
+target_desired_distance = 34.0
+path_postprocessing = 1
+
 [connection signal="body_entered" from="GalactamartWorker/InteractArea" to="GalactamartWorker/InteractArea" method="_on_body_entered"]
 [connection signal="body_exited" from="GalactamartWorker/InteractArea" to="GalactamartWorker/InteractArea" method="_on_body_exited"]
 [connection signal="body_entered" from="ExitShip/InteractArea" to="ExitShip/InteractArea" method="_on_body_entered"]

scripts/enemy_ground.gd

@@ -1,32 +1,125 @@
 extends "res://scripts/character_ground.gd"
 
 var last_aim_direction = Vector2(0, 0)
+var alerted = false
+
+var inaccuracy = 15
+
+var reaction_time = 0.35
+var reaction_halve_distance = 720
+var reaction_timer = 0
+
+enum {
+	AI_MODE_IDLE,
+	AI_MODE_ATTACK,
+	AI_MODE_SEARCH
+}
+
+enum {
+	AI_STATE_DEFAULT,
+	AI_STATE_CHASE,
+	AI_STATE_CHASE_LAST_SEEN
+}
+
+var ai_mode = AI_MODE_IDLE
+var ai_state = AI_STATE_DEFAULT
+
+var last_seen_player_position = null
+
+@onready var player = null 
+var game = null
 
 @export var starting_gun: String = &"pistol"
 
+@export var starting_health: int = 50
+
 func _ready() -> void:
 	super()
 	
+	health = starting_health
+	
 	set_ground_gun(starting_gun)
 
 func _process(delta: float) -> void:
 	super(delta)
 	
-	if input_icon.using_gamepad:
-		if !((Input.get_axis("aim_left", "aim_right") == 0) and (Input.get_axis("aim_up", "aim_down") == 0)):
-			$HeldItem.rotation = Vector2(
-				Input.get_axis("aim_left", "aim_right"),
-				Input.get_axis("aim_up", "aim_down")
-			).angle()
+	if !player: 
+		if game:
+			player = game.get_node("PlayerGround")
+		else: return
 	
-		if ($HeldItem.rotation_degrees < -90) or ($HeldItem.rotation_degrees > 90):
-			$HeldItem/Sprite.scale.y = -1
+	if ai_mode == AI_MODE_IDLE:
+		$LineOfSight.look_at(player.global_position)
+		
+		if player.is_ancestor_of($LineOfSight.get_collider()):
+			var divider = clamp((player.global_position - global_position).length() / reaction_halve_distance, 1, 8) * 1.5
+			reaction_timer += delta / divider
+			
+			if reaction_time < reaction_timer:
+				ai_mode = AI_MODE_ATTACK
+				reaction_timer = 0
 		else:
-			$HeldItem/Sprite.scale.y = 1
-	else:
-		$HeldItem.look_at(get_global_mouse_position())
+			reaction_timer -= delta
 			
-	horizontial_movement = Input.get_axis("ground_left", "ground_right")
-	vertical_movement = Input.get_axis("ground_up", "ground_down")
+		if reaction_timer < 0:
+			reaction_timer = 0
 			
-	firing = Input.is_action_pressed("fire")
+		
+	elif ai_mode == AI_MODE_ATTACK:
+		$LineOfSight.look_at(player.global_position)
+		if player.is_ancestor_of($LineOfSight.get_collider()):
+			if !$Navagent.target_position or ($Navagent.target_position != player.global_position):
+				$Navagent.target_position = player.global_position
+				
+			ai_state = AI_STATE_CHASE
+		elif last_seen_player_position:
+			if !$Navagent.target_position or ($Navagent.target_position != last_seen_player_position):
+				$Navagent.target_position = last_seen_player_position
+				
+			ai_state = AI_STATE_CHASE_LAST_SEEN
+			
+		$HeldItem.look_at(player.global_position)
+		
+		if ai_state == AI_STATE_CHASE:
+			if (player.global_position - global_position).length() > 256:
+				if $Navagent.is_navigation_finished():
+					last_seen_player_position = null
+					ai_mode = AI_MODE_IDLE
+				else:
+					var next_position = $Navagent.get_next_path_position()
+					next_position.y -= 32
+					var axes = global_position.direction_to(next_position)
+					
+					horizontial_movement = axes.x
+					vertical_movement = axes.y
+					
+			else:
+				horizontial_movement = 0
+				vertical_movement = 0
+			
+			reaction_timer += delta
+			
+			if reaction_timer > reaction_time:
+				firing = true
+				$HeldItem/Cast.rotation_degrees = randi_range(-inaccuracy, inaccuracy)
+				
+				reaction_timer = reaction_time
+				
+			last_seen_player_position = player.global_position
+		elif ai_state == AI_STATE_CHASE_LAST_SEEN:
+			if $Navagent.is_navigation_finished():
+				last_seen_player_position = null
+				ai_mode = AI_MODE_IDLE
+			else:
+				var next_position = $Navagent.get_next_path_position()
+				next_position.y -= 32
+				var axes = global_position.direction_to(next_position)
+				
+				horizontial_movement = axes.x
+				vertical_movement = axes.y
+		else:
+			reaction_timer -= delta
+			
+			if reaction_timer < 0:
+				firing = false
+				reaction_timer = 0

scripts/player_ground.gd

@@ -27,4 +27,14 @@ func _process(delta: float) -> void:
 	horizontial_movement = Input.get_axis("ground_left", "ground_right")
 	vertical_movement = Input.get_axis("ground_up", "ground_down")
 	
+	if $HeldItem/Cast.get_collision_point():
+		$HeldItem/Crosshair.visible = true
+		$HeldItem/Line.visible = true
+		
+		$HeldItem/Crosshair.global_position = $HeldItem/Cast.get_collision_point()
+		$HeldItem/Line.points[1].x = ($HeldItem/Cast.get_collision_point() - global_position).length()
+	else:
+		$HeldItem/Crosshair.visible = false
+		$HeldItem/Line.visible = false
+	
 	firing = Input.is_action_pressed("fire")

textures/crosshair.png.import

@@ -0,0 +1,40 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://coflscl1w4vtr"
+path="res://.godot/imported/crosshair.png-226e785e0f22bb09c3ce42bf42008081.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://textures/crosshair.png"
+dest_files=["res://.godot/imported/crosshair.png-226e785e0f22bb09c3ce42bf42008081.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/uastc_level=0
+compress/rdo_quality_loss=0.0
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/channel_remap/red=0
+process/channel_remap/green=1
+process/channel_remap/blue=2
+process/channel_remap/alpha=3
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1