Failed builtin physics experiment

rb2dladder.gd

@@ -0,0 +1,79 @@
+extends RigidBody2D
+
+var held = false
+var grabbed_vector = null
+
+onready var beltmap = $"../BeltTiles"
+
+var dir_vectors = [Vector2(1,0), Vector2(0,-1), Vector2(-1,0), Vector2(0,1)]
+
+export var rungs := 12
+export var cx := 2.5  # offset for edge feet
+export var cy := 5.0  # offset for edge feet
+#onready var foot_vectors = [Vector2(0,0), Vector2(cx,cy), Vector2(cx,-cy), Vector2(-cx,-cy), Vector2(-cx,cy)]
+var foot_vectors
+#var foot_weights = [3, 1, 1, 1, 1]
+var total_weight = 7
+
+
+func _ready():
+	friction = 1
+	linear_damp = 2
+	angular_damp = 100
+
+	total_weight = 1 + rungs*4
+	foot_vectors = [Vector2(0, 0)]
+	for i in rungs:
+		foot_vectors.append(Vector2(cx*(i+1), cy))
+		foot_vectors.append(Vector2(-cx*(i+1), cy))
+		foot_vectors.append(Vector2(cx*(i+1), -cy))
+		foot_vectors.append(Vector2(-cx*(i+1), -cy))
+
+
+func get_belt_direction(tx, ty):
+	var xflip = beltmap.is_cell_x_flipped(tx, ty)
+	var tp = beltmap.is_cell_transposed(tx, ty)
+	return int(tp) + int(xflip)*2
+
+func get_belt_rect(vec):
+	var origin = beltmap.map_to_world(vec)
+	return Rect2(to_local(origin), Vector2(8, 8))
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+#func _process(delta):
+#	var belt_speed = delta * 8
+func _physics_process(delta):
+	var belt_speed = 8 * 24
+	var direction = Vector2(0, 0)
+	set_applied_force(Vector2(0,0))
+	set_applied_torque(0)
+	for i in len(foot_vectors):
+		var vec = beltmap.world_to_map(position + foot_vectors[i].rotated(rotation))
+		if beltmap.get_cell(vec.x, vec.y) >= 0:
+			add_force(vec - position, belt_speed*dir_vectors[get_belt_direction(vec.x, vec.y)]/total_weight)
+			#direction += dir_vectors[get_belt_direction(vec.x, vec.y)] * foot_weights[i]
+#	position += direction/total_weight * belt_speed
+	if held:
+		var ggv = to_global(grabbed_vector)
+		var dv = get_global_mouse_position() - ggv
+		add_force(grabbed_vector, dv * dv.abs() *friction*linear_damp)
+
+
+#func _input_event(_viewport, event, _shape_idx):
+#	if event is InputEventMouseButton:
+#		held = event.pressed
+#		if held:
+#			grabbed_vector = to_local(event.position)
+
+func _input(event):
+	if held:
+		if event is InputEventMouseButton:
+			if not event.pressed:
+				held = false
+#		elif event is InputEventMouseMotion:
+##			position += event.relative
+#			apply_impulse(grabbed_vector, event.relative * friction)
+	elif event is InputEventMouseButton and event.pressed:
+		if $SprLadder6.get_rect().has_point(to_local(event.position)):
+			held = true
+			grabbed_vector = to_local(event.position)