First commit

Add simple player movement with a finite state machine.
Add enemy that can move to target point.
Add ground through a tilemap and wall that player and enemy cannot
cross.

.gitattributes

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+# Normalize EOL for all files that Git considers text files.
+* text=auto eol=lf

.gitignore

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+# Godot 4+ specific ignores
+.godot/

README.md

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+# Bovido

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project.godot

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+; Engine configuration file.
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+; since the parameters that go here are not all obvious.
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+;   param=value ; assign values to parameters
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+]
+}
+
+[layer_names]
+
+2d_physics/layer_1="walls"
+2d_physics/layer_2="player"

scenes/enemy.tscn

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+
+[ext_resource type="PackedScene" uid="uid://m8uyi35gr3qd" path="res://scenes/tile_map.tscn" id="2_c6bkg"]
+[ext_resource type="PackedScene" uid="uid://ba1t35yyot4jl" path="res://scenes/player.tscn" id="2_idv37"]
+[ext_resource type="PackedScene" uid="uid://bktg1ypaav3q3" path="res://scenes/enemy.tscn" id="3_2xcd4"]
+
+[node name="Main" type="Node2D"]
+y_sort_enabled = true
+
+[node name="TileMap" parent="." instance=ExtResource("2_c6bkg")]
+position = Vector2(324, 82)
+
+[node name="Enemy" parent="TileMap" instance=ExtResource("3_2xcd4")]
+z_index = 1
+y_sort_enabled = true
+position = Vector2(0, 40)
+
+[node name="Player" parent="TileMap" instance=ExtResource("2_idv37")]
+z_index = 1
+z_as_relative = false
+y_sort_enabled = true

scenes/player.tscn

@@ -0,0 +1,217 @@
+[gd_scene load_steps=16 format=3 uid="uid://ba1t35yyot4jl"]
+
+[ext_resource type="Texture2D" uid="uid://bqkvmyqo86dtj" path="res://art/Owlet_Monster_Walk_6.png" id="1_e23l4"]
+[ext_resource type="Script" path="res://scripts/player.gd" id="1_fmx2p"]
+[ext_resource type="Texture2D" uid="uid://cjxkidkeka7yp" path="res://art/Owlet_Monster_Run_6.png" id="2_qq5i7"]
+[ext_resource type="Texture2D" uid="uid://bi7ceeuwhg5mp" path="res://art/Owlet_Monster_Idle_4.png" id="4_orj3a"]
+[ext_resource type="Texture2D" uid="uid://dbrr63tv6i2ek" path="res://art/Owlet_Monster_Throw_4.png" id="5_2s1mg"]
+[ext_resource type="Script" path="res://scripts/state_machine.gd" id="6_hl63m"]
+[ext_resource type="Script" path="res://scripts/player_idle_state.gd" id="7_0nfrc"]
+[ext_resource type="Script" path="res://scripts/player_walk_state.gd" id="7_gcd3q"]
+
+[sub_resource type="Animation" id="Animation_rh7n7"]
+length = 0.001
+
+[sub_resource type="Animation" id="Animation_7igie"]
+resource_name = "idle"
+length = 0.4
+loop_mode = 1
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("Sprite2D:texture")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0),
+"transitions": PackedFloat32Array(1),
+"update": 1,
+"values": [ExtResource("4_orj3a")]
+}
+tracks/1/type = "value"
+tracks/1/imported = false
+tracks/1/enabled = true
+tracks/1/path = NodePath("Sprite2D:hframes")
+tracks/1/interp = 1
+tracks/1/loop_wrap = true
+tracks/1/keys = {
+"times": PackedFloat32Array(0),
+"transitions": PackedFloat32Array(1),
+"update": 1,
+"values": [4]
+}
+tracks/2/type = "value"
+tracks/2/imported = false
+tracks/2/enabled = true
+tracks/2/path = NodePath("Sprite2D:frame")
+tracks/2/interp = 1
+tracks/2/loop_wrap = true
+tracks/2/keys = {
+"times": PackedFloat32Array(0, 0.1, 0.2, 0.3),
+"transitions": PackedFloat32Array(1, 1, 1, 1),
+"update": 1,
+"values": [0, 1, 2, 3]
+}
+
+[sub_resource type="Animation" id="Animation_xfiuh"]
+resource_name = "run"
+length = 0.6
+loop_mode = 1
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("Sprite2D:texture")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0),
+"transitions": PackedFloat32Array(1),
+"update": 1,
+"values": [ExtResource("2_qq5i7")]
+}
+tracks/1/type = "value"
+tracks/1/imported = false
+tracks/1/enabled = true
+tracks/1/path = NodePath("Sprite2D:hframes")
+tracks/1/interp = 1
+tracks/1/loop_wrap = true
+tracks/1/keys = {
+"times": PackedFloat32Array(0),
+"transitions": PackedFloat32Array(1),
+"update": 1,
+"values": [6]
+}
+tracks/2/type = "value"
+tracks/2/imported = false
+tracks/2/enabled = true
+tracks/2/path = NodePath("Sprite2D:frame")
+tracks/2/interp = 1
+tracks/2/loop_wrap = true
+tracks/2/keys = {
+"times": PackedFloat32Array(0, 0.1, 0.2, 0.3, 0.4, 0.5),
+"transitions": PackedFloat32Array(1, 1, 1, 1, 1, 1),
+"update": 1,
+"values": [0, 1, 2, 3, 4, 5]
+}
+
+[sub_resource type="Animation" id="Animation_gswgu"]
+resource_name = "throw"
+length = 0.4
+loop_mode = 1
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("Sprite2D:texture")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0),
+"transitions": PackedFloat32Array(1),
+"update": 1,
+"values": [ExtResource("5_2s1mg")]
+}
+tracks/1/type = "value"
+tracks/1/imported = false
+tracks/1/enabled = true
+tracks/1/path = NodePath("Sprite2D:hframes")
+tracks/1/interp = 1
+tracks/1/loop_wrap = true
+tracks/1/keys = {
+"times": PackedFloat32Array(0),
+"transitions": PackedFloat32Array(1),
+"update": 1,
+"values": [4]
+}
+tracks/2/type = "value"
+tracks/2/imported = false
+tracks/2/enabled = true
+tracks/2/path = NodePath("Sprite2D:frame")
+tracks/2/interp = 1
+tracks/2/loop_wrap = true
+tracks/2/keys = {
+"times": PackedFloat32Array(0, 0.1, 0.2, 0.3),
+"transitions": PackedFloat32Array(1, 1, 1, 1),
+"update": 1,
+"values": [0, 1, 2, 3]
+}
+
+[sub_resource type="Animation" id="Animation_pjkea"]
+resource_name = "walk"
+length = 0.6
+loop_mode = 1
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("Sprite2D:texture")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0),
+"transitions": PackedFloat32Array(1),
+"update": 1,
+"values": [ExtResource("1_e23l4")]
+}
+tracks/1/type = "value"
+tracks/1/imported = false
+tracks/1/enabled = true
+tracks/1/path = NodePath("Sprite2D:hframes")
+tracks/1/interp = 1
+tracks/1/loop_wrap = true
+tracks/1/keys = {
+"times": PackedFloat32Array(0),
+"transitions": PackedFloat32Array(1),
+"update": 1,
+"values": [6]
+}
+tracks/2/type = "value"
+tracks/2/imported = false
+tracks/2/enabled = true
+tracks/2/path = NodePath("Sprite2D:frame")
+tracks/2/interp = 1
+tracks/2/loop_wrap = true
+tracks/2/keys = {
+"times": PackedFloat32Array(0, 0.1, 0.2, 0.3, 0.4, 0.5),
+"transitions": PackedFloat32Array(1, 1, 1, 1, 1, 1),
+"update": 1,
+"values": [0, 1, 2, 3, 4, 5]
+}
+
+[sub_resource type="AnimationLibrary" id="AnimationLibrary_ldfyt"]
+_data = {
+"RESET": SubResource("Animation_rh7n7"),
+"idle": SubResource("Animation_7igie"),
+"run": SubResource("Animation_xfiuh"),
+"throw": SubResource("Animation_gswgu"),
+"walk": SubResource("Animation_pjkea")
+}
+
+[sub_resource type="RectangleShape2D" id="RectangleShape2D_hocsq"]
+size = Vector2(21, 7.5)
+
+[node name="Player" type="CharacterBody2D"]
+script = ExtResource("1_fmx2p")
+
+[node name="Sprite2D" type="Sprite2D" parent="."]
+position = Vector2(0, -16)
+texture = ExtResource("4_orj3a")
+hframes = 4
+
+[node name="AnimationPlayer" type="AnimationPlayer" parent="."]
+libraries = {
+"": SubResource("AnimationLibrary_ldfyt")
+}
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="."]
+y_sort_enabled = true
+position = Vector2(-2.5, -3.75)
+shape = SubResource("RectangleShape2D_hocsq")
+
+[node name="StateMachine" type="Node" parent="." node_paths=PackedStringArray("state")]
+script = ExtResource("6_hl63m")
+state = NodePath("Idle")
+
+[node name="Idle" type="Node" parent="StateMachine"]
+script = ExtResource("7_0nfrc")
+
+[node name="Walk" type="Node" parent="StateMachine"]
+script = ExtResource("7_gcd3q")

scenes/tile_map.tscn

@@ -0,0 +1,43 @@
+[gd_scene load_steps=7 format=3 uid="uid://m8uyi35gr3qd"]
+
+[ext_resource type="Texture2D" uid="uid://cm58s70te836m" path="res://art/tile.png" id="1_2goti"]
+[ext_resource type="Texture2D" uid="uid://lnt0clkwms52" path="res://art/wall.png" id="2_xllgf"]
+[ext_resource type="Script" path="res://scripts/tile_map.gd" id="3_067ya"]
+
+[sub_resource type="TileSetAtlasSource" id="TileSetAtlasSource_wq1n0"]
+texture = ExtResource("1_2goti")
+texture_region_size = Vector2i(32, 32)
+0:0/0 = 0
+0:0/0/physics_layer_0/linear_velocity = Vector2(0, 0)
+0:0/0/physics_layer_0/angular_velocity = 0.0
+
+[sub_resource type="TileSetAtlasSource" id="TileSetAtlasSource_u0t08"]
+texture = ExtResource("2_xllgf")
+texture_region_size = Vector2i(32, 32)
+0:0/0 = 0
+0:0/0/physics_layer_0/linear_velocity = Vector2(0, 0)
+0:0/0/physics_layer_0/angular_velocity = 0.0
+0:0/0/physics_layer_0/polygon_0/points = PackedVector2Array(-16, 8.5, 0, 1.5, 15.5, 9, 0, 16)
+
+[sub_resource type="TileSet" id="TileSet_kwgeq"]
+tile_shape = 1
+tile_layout = 5
+tile_size = Vector2i(32, 16)
+physics_layer_0/collision_layer = 1
+sources/0 = SubResource("TileSetAtlasSource_wq1n0")
+sources/1 = SubResource("TileSetAtlasSource_u0t08")
+
+[node name="TileMap" type="TileMap"]
+y_sort_enabled = true
+tile_set = SubResource("TileSet_kwgeq")
+format = 2
+layer_0/name = "ground"
+layer_0/y_sort_enabled = true
+layer_1/name = "wall"
+layer_1/enabled = true
+layer_1/modulate = Color(1, 1, 1, 1)
+layer_1/y_sort_enabled = true
+layer_1/y_sort_origin = 0
+layer_1/z_index = 1
+layer_1/tile_data = PackedInt32Array()
+script = ExtResource("3_067ya")

scripts/enemy.gd

@@ -0,0 +1,36 @@
+extends CharacterBody2D
+
+@onready var tile_map: TileMap = get_parent()
+@onready var animation_player = $AnimationPlayer
+@export var speed = 80
+var y_spawn_offset = -8
+var is_moving = false
+var destination: Vector2 = Vector2.ZERO
+
+
+func _ready():
+	var spawn_cell: Vector2i = tile_map.get_top_spawn_cell()
+	position = tile_map.map_to_local(spawn_cell)
+	position.y += y_spawn_offset
+
+func _process(_delta):
+	if is_moving:
+		animation_player.play("walk")
+	else:
+		animation_player.stop()
+
+func _physics_process(delta):
+	move_to_rand_cell(delta)
+
+func move_to_rand_cell(delta):
+	if !is_moving:
+		var rand_cell: Vector2i = tile_map.get_random_top_cell()
+		tile_map.set_cell(0, Vector2i(rand_cell.x, rand_cell.y), 1, Vector2i(0, 0), 0) # debug purpose
+		destination = tile_map.map_to_local(rand_cell)
+		destination.y += y_spawn_offset
+		
+		is_moving = true
+	position = position.move_toward(destination, delta * speed)
+	
+	if position == destination:
+		is_moving = false

scripts/player.gd

@@ -0,0 +1,13 @@
+class_name Player
+extends CharacterBody2D
+
+@export var speed = 120
+var y_spawn_offset = -8
+@onready var animation_player = $AnimationPlayer
+@onready var sprite = $Sprite2D
+@onready var tile_map: TileMap = get_parent()
+
+func _ready():
+	var spawn_cell: Vector2i = tile_map.get_bottom_spawn_cell()
+	position = tile_map.map_to_local(spawn_cell)
+	position.y += y_spawn_offset

scripts/player_idle_state.gd

@@ -0,0 +1,13 @@
+class_name PlayerIdleState
+extends PlayerState
+
+func enter(_msg := {}):
+	player.velocity = Vector2.ZERO
+	player.animation_player.play("idle")
+
+func update(_delta):
+	if get_input_direction() != Vector2.ZERO:
+		state_machine.transition_to("Walk")
+
+func get_input_direction():
+	return Input.get_vector("move_left", "move_right", "move_up", "move_down")

scripts/player_state.gd

@@ -0,0 +1,9 @@
+class_name PlayerState
+extends State
+
+var player: Player
+
+func _ready():
+	await owner.ready
+	player = owner as Player
+	assert(player != null)

scripts/player_walk_state.gd

@@ -0,0 +1,24 @@
+class_name PlayerWalkState
+extends PlayerState
+
+func enter(_msg := {}):
+	player.animation_player.play("walk")
+
+func physics_update(_delta):
+	var direction = get_input_direction()
+	player.velocity = direction * player.speed
+	
+	player.move_and_slide() # this method calculate with delta, we don’t need to do it
+	
+	if player.velocity == Vector2.ZERO:
+		state_machine.transition_to("Idle")
+
+func get_input_direction():
+		var direction = Input.get_vector("move_left", "move_right", "move_up", "move_down")
+		
+		if Input.is_action_pressed("move_left"):
+			player.sprite.flip_h = true
+		elif Input.is_action_pressed("move_right"):
+			player.sprite.flip_h = false
+		
+		return direction

scripts/state.gd

@@ -0,0 +1,19 @@
+class_name State
+extends Node
+
+var state_machine = null
+
+func handle_input(_event: InputEvent):
+	pass
+	
+func update(_delta: float):
+	pass
+	
+func physics_update(_delta: float):
+	pass
+	
+func enter(_msg: Dictionary = {}):
+	pass
+	
+func exit():
+	pass

scripts/state_machine.gd

@@ -0,0 +1,34 @@
+class_name StateMachine
+extends Node
+
+signal transitioned(state_name)
+@export var state: State
+
+func _ready():
+	await owner.ready
+	
+	for child in get_children():
+		child.state_machine = self
+	
+	state.enter()
+
+func _unhandled_input(event):
+	state.handle_input(event)
+
+func _process(delta):
+	state.update(delta)
+
+func _physics_process(delta):
+	state.physics_update(delta)
+	
+func transition_to(target_state_name: String, msg: Dictionary = {}):
+	if not has_node(target_state_name):
+		push_warning("No state with name " + target_state_name)
+		return
+	
+	state.exit()
+	state = get_node(target_state_name)
+	state.enter(msg)
+	emit_signal("transitioned", state.name)
+	
+	

scripts/tile_map.gd

@@ -0,0 +1,38 @@
+extends TileMap
+
+@export var map_width = 13 # keep to a odd value
+@export var map_height = 19 # keep to a odd value
+
+func _ready():
+	draw_map()
+	
+func draw_map():
+	draw_ground()
+	draw_separation()
+	get_random_top_cell()
+
+func draw_ground():
+	for x in range(map_width):
+		for y in range(map_height):
+			set_cell(0, Vector2i(x, y), 0, Vector2i(0, 0), 0)
+
+# The tilemap is initially divided in two section
+# One for the player (bottom section)
+# One for the enemy (top section)
+func draw_separation():
+	var middle_height = floor(map_height / 2.0)
+	for x in range(map_width):
+		set_cell(1, Vector2i(x - 1, middle_height - 1), 1, Vector2i(0, 0), 0) # why have we to add -1?
+
+func get_top_spawn_cell() -> Vector2i:
+	return Vector2i(floor(map_width / 2.0), 1)
+	
+func get_bottom_spawn_cell() -> Vector2i:
+	return Vector2i(floor(map_width / 2.0), map_height - 2)
+
+func get_random_top_cell() -> Vector2i:
+	var middle_height = floor(map_height / 2.0)
+	var rand_width = randi_range(0, map_width - 1)
+	var rand_height = randi_range(0, middle_height - 1)
+	#set_cell(0, Vector2i(rand_width, rand_height), 1, Vector2i(0, 0), 0)
+	return Vector2i(rand_width, rand_height)