massive work towards godot 4

scripts/player.gd

@@ -0,0 +1,211 @@
+class_name Player
+extends CharacterBody2D
+
+signal unequip()
+signal coin_update(int)
+
+signal health_update(int)
+signal death()
+
+
+const BASE_MOVEMENT_SPEED := 10000
+const BASE_JUMP_HEIGHT := -250
+
+
+
+@export
+var jump_platform: PackedScene
+
+@export
+var animation_player: AnimationPlayer
+
+@export
+var arms_sprite: Sprite2D
+
+@export
+var damage_sound: AudioStream
+
+@export
+var sword_sound: AudioStream
+
+@export_category("Combat")
+@export
+var max_hp: int = 25
+
+
+@export_dir
+var equipment_dir: String
+
+@export
+var equipment_node: Node2D
+
+@export_category("Movement")
+@export
+var default_speed: float = 1
+
+@export
+var default_jump_height: float = 1
+
+
+@onready
+var health: int = max_hp :
+	set(value):
+		value = clampi(value, 0, max_hp)
+
+		if value != health:
+			health_update.emit(value)
+		if value == 0:
+			death.emit()
+		health = value
+	get:
+		return health
+
+@onready
+var default_gravity: float = ProjectSettings.get_setting("physics/2d/default_gravity")
+
+var coins: int = 0 :
+	set(value):
+		if value != coins:
+			coin_update.emit(coins)
+		coins = value
+	get:
+		return coins
+
+var motion: Vector2 = Vector2.ZERO
+
+var currently_equiped: String = "pistol"
+
+var extra_jumps: int = 2
+
+var current_jumps: int = 0
+
+var jump_height: float = 0
+
+func _ready() -> void:
+	self.add_item("pistol")
+	self.add_item("saber")
+
+func deal_damage(dmg = 1) -> void:
+	self._play_audio(damage_sound)
+	self.health -= dmg
+
+func switch_sheath() -> void:
+	var item := get_currently_equiped_node()
+	item.toggle_sheath()
+
+
+func _play_audio(track: AudioStream) -> void:
+	var audio_player = get_node_or_null("AudioStreamPlayer")
+	if !audio_player:
+		audio_player = AudioStreamPlayer.new()
+		audio_player.name = "AudioStreamPlayer"
+		self.add_child(audio_player)
+	audio_player.stream = track
+	audio_player.volume_db = -30
+	audio_player.play()
+
+func pickup_coin(coin_value: int = 1) -> void:
+	self.coins += coin_value
+
+func _process(_delta: float) -> void:
+	var item = get_currently_equiped_node()
+	arms_sprite.visible = (item == null || item.is_sheathed())
+
+func _physics_process(delta: float) -> void:
+
+	self._combat_process(delta)
+	self._gravity_process(delta)
+	self._movement_process(delta)
+	self._animation_process(delta)
+
+	self.set_velocity(self.motion)
+	self.set_up_direction(Vector2.UP)
+	self.move_and_slide()
+	self.motion = self.velocity
+
+func _combat_process(_delta: float) -> void:
+
+	for i in range(0, 2):
+		if Input.is_action_just_pressed("equip_slot_%s" % [str(i+1)]):
+			if self.equipment_node.get_child_count() > i:
+				self.equip(self.equipment_node.get_child(i).name)
+
+	if Input.is_action_just_pressed("sheath"):
+		self.switch_sheath()
+	if Input.is_action_pressed("attack") and self.get_currently_equiped_node().is_sheathed():
+		self.switch_sheath()
+
+func _gravity_process(delta: float) -> void:
+	self.motion.y += self.default_gravity * delta
+	if self.is_on_floor():
+		self.motion.y = 0
+
+func _movement_process(delta: float) -> void:
+
+	# Horizontal movement
+	if Input.is_action_pressed("move_right"):
+		self.motion.x = (self.BASE_MOVEMENT_SPEED * delta) * self.default_speed
+	elif Input.is_action_pressed("move_left"):
+		self.motion.x = (-self.BASE_MOVEMENT_SPEED * delta) * self.default_speed
+	else:
+		self.motion.x = 0
+
+	# Handle jumps
+	if Input.is_action_just_pressed("jump"):
+		if self.is_on_floor():
+
+			if Input.is_action_pressed("move_down"):
+				pass # lmanley: todo reimplement platforms
+			else:
+				self.jump()
+				self.current_jumps = self.extra_jumps
+
+		elif self.current_jumps > 0:
+			self.jump()
+			self.spawn_jump_platform()
+			self.current_jumps -= 1
+
+func jump() -> void:
+	self.motion.y = self.BASE_JUMP_HEIGHT * self.default_jump_height
+
+func spawn_jump_platform() -> void:
+	self._play_audio(sword_sound)
+	var platform = self.jump_platform.instantiate()
+	self.get_parent().add_child(platform)
+	platform.position = Vector2(self.position.x, self.position.y + 4)
+
+func _animation_process(_delta: float) -> void:
+
+	if animation_player is PlayerAnimationPlayer:
+		if get_global_mouse_position().x < global_position.x:
+			self.animation_player.set_direction(Vector2.LEFT)
+		else:
+			self.animation_player.set_direction(Vector2.RIGHT)
+
+		if not self.is_on_floor():
+			self.animation_player.safe_play("jump")
+		elif abs(self.motion.x) > 0:
+			self.animation_player.safe_play("walk")
+		else:
+			self.animation_player.safe_play("idle")
+
+func get_currently_equiped_node() -> Equipment:
+	return self.equipment_node.get_node_or_null(self.currently_equiped)
+
+func equip(equipment_id: String) -> void:
+	if equipment_id == self.currently_equiped:
+		self.switch_sheath()
+	else:
+		var current = self.get_currently_equiped_node()
+		if not current.is_sheathed():
+			current.toggle_sheath()
+
+		currently_equiped = equipment_id
+		current = self.get_currently_equiped_node()
+		if current.is_sheathed():
+			current.toggle_sheath()
+
+func add_item(equiment_id: String) -> void:
+	var item = load("%s/%s.tscn" % [equipment_dir, equiment_id]).instantiate()
+	item.name = equiment_id
+	equipment_node.add_child(item)