game: add slime enemy

scenes/enemies/enemy_slime_small.tscn

@@ -0,0 +1,41 @@
+[gd_scene load_steps=9 format=3 uid="uid://cjikar11hbp3b"]
+
+[ext_resource type="PackedScene" uid="uid://b7vq8xspnlyeu" path="res://scenes/enemies/enemy_base.tscn" id="1_o6v6p"]
+[ext_resource type="Script" uid="uid://c5wgwy5itcnkk" path="res://scenes/enemies/enemy_slime_small.gd" id="2_2bnvq"]
+[ext_resource type="Shader" uid="uid://cf48pgfl308o3" path="res://assets/shaders/base_color_tint.gdshader" id="3_2yvgl"]
+[ext_resource type="Texture2D" uid="uid://ctob5me7woid8" path="res://assets/sprites/slime_small grayscale.png" id="3_iaao1"]
+
+[sub_resource type="ShaderMaterial" id="ShaderMaterial_daihb"]
+shader = ExtResource("3_2yvgl")
+shader_parameter/base_color = Color(3.46541e-06, 0.969973, 0.260278, 1)
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_2yvgl"]
+atlas = ExtResource("3_iaao1")
+region = Rect2(0, 15, 16, 15)
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_daihb"]
+atlas = ExtResource("3_iaao1")
+region = Rect2(0, 30, 16, 15)
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_wu20c"]
+atlas = ExtResource("3_iaao1")
+region = Rect2(0, 45, 16, 15)
+
+[node name="EnemySlimeSmall" instance=ExtResource("1_o6v6p")]
+script = ExtResource("2_2bnvq")
+color = Color(0.498039, 1, 0, 1)
+
+[node name="Sprite" type="Node2D" parent="." index="0"]
+
+[node name="BaseSprite" type="Sprite2D" parent="Sprite" index="0"]
+material = SubResource("ShaderMaterial_daihb")
+texture = SubResource("AtlasTexture_2yvgl")
+
+[node name="Highlights" type="Sprite2D" parent="Sprite" index="1"]
+texture = SubResource("AtlasTexture_daihb")
+
+[node name="Shading" type="Sprite2D" parent="Sprite" index="2"]
+texture = SubResource("AtlasTexture_wu20c")
+
+[node name="Sprite2D" parent="." index="1"]
+visible = false