refs 114: character sprite scaling regions (#127)

* scaling regions added

* lines length reduced according to mepedorr comment

* fix to update characters' position just after  room load

addons/popochiu/engine/objects/character/popochiu_character.gd

@@ -28,6 +28,9 @@ var last_room := ''
 var anim_suffix := ''
 var is_moving := false
 var emotion := ''
+var on_scaling_region: Dictionary = {}
+var default_walk_speed: int
+var default_scale: Vector2
 
 var _looking_dir: int = Looking.DOWN
 
@@ -37,7 +40,8 @@ var _looking_dir: int = Looking.DOWN
 # ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ GODOT ░░░░
 func _ready():
 	super()
-
+	default_walk_speed = walk_speed
+	default_scale = Vector2(scale)
 	if not Engine.is_editor_hint():
 		set_process(follow_player)
 	else:

addons/popochiu/engine/objects/region/popochiu_region.gd

@@ -11,10 +11,9 @@ extends Area2D
 # TODO: If walkable is false, characters should not be able to walk through this.
 #export var walkable := true
 @export var tint := Color.WHITE
-# TODO: Make the scale of the character change depending checked where it is placed in
-# the area.
-#export var scale_top := 1.0
-#export var scale_bottom := 1.0
+@export var scaling :bool = false
+@export var scale_top :float = 1.0
+@export var scale_bottom :float = 1.0
 
 
 # ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ GODOT ░░░░
@@ -33,12 +32,42 @@ func _on_character_entered(chr: PopochiuCharacter) -> void:
 func _on_character_exited(chr: PopochiuCharacter) -> void:
 	pass
 
+func _update_scaling_region(chr: PopochiuCharacter) -> void:
+	var polygon_y_array = []
+	for x in get_node("InteractionPolygon").get_polygon():
+		polygon_y_array.append(x.y)
+
+	chr.on_scaling_region= {
+		'region_description': self.description,
+		'scale_top': self.scale_top, 
+		'scale_bottom': self.scale_bottom,  
+		'polygon_top_y': (
+			polygon_y_array.min()+self.position.y+get_node("InteractionPolygon").position.y 
+			if self.position 
+			else ''
+			),
+		'polygon_bottom_y': (
+			polygon_y_array.max()+self.position.y+get_node("InteractionPolygon").position.y 
+			if self.position 
+			else ''),
+
+		}
+
+
+func _clear_scaling_region(chr: PopochiuCharacter) -> void:
+	if chr.on_scaling_region and chr.on_scaling_region['region_description'] == self.description:
+		chr.on_scaling_region = {}
 
 # ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ PRIVATE ░░░░
 func _check_area(area: PopochiuCharacter, entered: bool) -> void:
 	if area is PopochiuCharacter:
-		if entered: _on_character_entered(area)
-		else: _on_character_exited(area)
+		if entered:
+			_on_character_entered(area)
+			if scaling:
+				_update_scaling_region(area)
+		else:
+			_on_character_exited(area)
+			_clear_scaling_region(area)
 
 
 func _set_enabled(value: bool) -> void:

addons/popochiu/engine/objects/room/popochiu_room.gd

@@ -130,7 +130,7 @@ func add_character(chr: PopochiuCharacter) -> void:
 	#warning-ignore:return_value_discarded
 	chr.started_walk_to.connect(_update_navigation_path)
 	chr.stopped_walk.connect(_clear_navigation_path.bind(chr))
-
+	update_characters_position(chr)
 	if chr.follow_player:
 		C.player.started_walk_to.connect(_follow_player.bind(chr))
 
@@ -188,6 +188,7 @@ func update_characters_position(character):
 		if character.position_stored 
 		else character.position
 		)
+	_update_character_scale(character)
 
 # ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ SET & GET ░░░░
 func get_marker(marker_name: String) -> Marker2D:
@@ -293,6 +294,31 @@ func set_active_walkable_area(walkable_area_name: String) -> void:
 
 
 # ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ PRIVATE ░░░░
+func _update_character_scale(chr):
+	if chr.on_scaling_region:
+		var polygon_range = (
+			chr.on_scaling_region['polygon_bottom_y'] - chr.on_scaling_region['polygon_top_y']
+			)
+		var scale_range = (
+			chr.on_scaling_region['scale_bottom'] - chr.on_scaling_region['scale_top']
+			)
+
+		var position_from_the_top_of_region = (
+			chr.position.y-chr.on_scaling_region['polygon_top_y']
+			)
+
+		var scale_for_position = (
+			chr.on_scaling_region['scale_top']+(
+				scale_range/polygon_range*position_from_the_top_of_region
+		)
+		)
+		chr.scale.x = scale_for_position
+		chr.scale.y = scale_for_position
+		chr.walk_speed = chr.default_walk_speed/chr.default_scale.x*scale_for_position
+	else:
+		chr.scale = chr.default_scale
+		chr.walk_speed = chr.default_walk_speed
+
 func _move_along_path(distance: float, moving_character_data: Dictionary):
 	var last_point: Vector2 =( 
 		moving_character_data.character.position_stored 
@@ -313,14 +339,15 @@ func _move_along_path(distance: float, moving_character_data: Dictionary):
 				moving_character_data.character.position_stored = next_position
 			else:
 				moving_character_data.character.position = next_position
-
+				_update_character_scale(moving_character_data.character)
 			return
 
 		distance -= distance_between_points
 		last_point = moving_character_data.path[0]
 		moving_character_data.path.remove_at(0)
 
 	moving_character_data.character.position = last_point
+	_update_character_scale(moving_character_data.character)
 	_clear_navigation_path(moving_character_data.character)