Scroll refactoring progress

druid/base/drag.lua

@@ -22,11 +22,11 @@ local function start_touch(self, touch)
 	self.is_touch = true
 	self.is_drag = false
 
-	self.touch_start_pos.x = touch.screen_x
-	self.touch_start_pos.y = touch.screen_y
+	self.touch_start_pos.x = touch.x
+	self.touch_start_pos.y = touch.y
 
-	self.screen_x = touch.screen_x
-	self.screen_y = touch.screen_y
+	self.x = touch.x
+	self.y = touch.y
 
 	self.on_touch_start:trigger(self:get_context())
 end
@@ -40,22 +40,24 @@ local function end_touch(self)
 	self.is_drag = false
 	self.is_touch = false
 	self.on_touch_end:trigger(self:get_context())
+	self:reset_input_priority()
 	self.touch_id = 0
 end
 
 
 local function process_touch(self, touch)
 	if not self.can_x then
-		self.touch_start_pos.x = touch.screen_x
+		self.touch_start_pos.x = touch.x
 	end
 	if not self.can_y then
-		self.touch_start_pos.y = touch.screen_y
+		self.touch_start_pos.y = touch.y
 	end
 
-	local distance = helper.distance(touch.screen_x, touch.screen_y, self.touch_start_pos.x, self.touch_start_pos.y)
+	local distance = helper.distance(touch.x, touch.y, self.touch_start_pos.x, self.touch_start_pos.y)
 	if not self.is_drag and distance >= self.drag_deadzone then
 		self.is_drag = true
 		self.on_drag_start:trigger(self:get_context())
+		self:increase_input_priority()
 	end
 end
 
@@ -93,8 +95,8 @@ local function on_touch_release(self, action_id, action)
 		end
 
 		if next_touch then
-			self.screen_x = next_touch.screen_x
-			self.screen_y = next_touch.screen_y
+			self.x = next_touch.x
+			self.y = next_touch.y
 			self.touch_id = next_touch.id
 		else
 			end_touch(self)
@@ -116,8 +118,8 @@ function M.init(self, node, on_drag_callback)
 	self.dx = 0
 	self.dy = 0
 	self.touch_id = 0
-	self.screen_x = 0
-	self.screen_y = 0
+	self.x = 0
+	self.y = 0
 	self.is_touch = false
 	self.is_drag = false
 	self.touch_start_pos = vmath.vector3(0)
@@ -185,13 +187,13 @@ function M.on_input(self, action_id, action)
 
 	local touch_modified = find_touch(action_id, action, self.touch_id)
 	if touch_modified and self.is_drag then
-		self.dx = touch_modified.screen_x - self.screen_x
-		self.dy = touch_modified.screen_y - self.screen_y
+		self.dx = touch_modified.x - self.x
+		self.dy = touch_modified.y - self.y
 	end
 
 	if touch_modified then
-		self.screen_x = touch_modified.screen_x
-		self.screen_y = touch_modified.screen_y
+		self.x = touch_modified.x
+		self.y = touch_modified.y
 	end
 
 	if self.is_drag then

druid/base/scroll.lua

@@ -22,7 +22,7 @@ local function on_scroll_drag(self, dx, dy)
 	dy = -dy
 	local t = self.target_pos
 	local b = self.available_soft_pos
-	local soft = 100
+	local extra_size = self.style.EXTRA_STRECH_SIZE
 
 	-- Handle soft zones
 	-- Percent - multiplier for delta. Less if outside of scroll zone
@@ -30,10 +30,10 @@ local function on_scroll_drag(self, dx, dy)
 	local y_perc = 1
 
 	if t.x < b.x and dx < 0 then
-		x_perc = (soft - (b.x - t.x)) / soft
+		x_perc = (-extra_size.x - (b.x - t.x)) / -extra_size.x
 	end
 	if t.x > b.z and dx > 0 then
-		x_perc = (soft - (t.x - b.z)) / soft
+		x_perc = (extra_size.z - (t.x - b.z)) / extra_size.z
 	end
 	-- If disabled scroll by x
 	if not self.can_x then
@@ -41,24 +41,16 @@ local function on_scroll_drag(self, dx, dy)
 	end
 
 	if t.y > b.y and dy < 0 then
-		y_perc = (soft - (t.y - b.y)) / soft
+		y_perc = (extra_size.y - (t.y - b.y)) / extra_size.y
 	end
 	if t.y < b.w and dy > 0 then
-		y_perc = (soft - (b.w - t.y)) / soft
+		y_perc = (-extra_size.w - (b.w - t.y)) / -extra_size.w
 	end
 	-- If disabled scroll by y
 	if not self.can_y then
 		y_perc = 0
 	end
 
-	-- Reset inert if outside of scroll zone
-	if x_perc ~= 1 then
-		self.inertion.x = 0
-	end
-	if y_perc ~= 1 then
-		self.inertion.y = 0
-	end
-
 	t.x = t.x + dx * x_perc
 	t.y = t.y - dy * y_perc
 end
@@ -79,21 +71,8 @@ local function update_hand_scroll(self, dt)
 	local dx = self.target_pos.x - self.current_pos.x
 	local dy = self.target_pos.y - self.current_pos.y
 
-	if helper.sign(dx) ~= helper.sign(self.inertion.x) then
-		self.inertion.x = 0
-	end
-	if helper.sign(dy) ~= helper.sign(self.inertion.y) then
-		self.inertion.y = 0
-	end
-
-	self.inertion.x = self.inertion.x + dx
-	self.inertion.y = self.inertion.y + dy
-
-	self.inertion.x = math.abs(self.inertion.x) * helper.sign(dx)
-	self.inertion.y = math.abs(self.inertion.y) * helper.sign(dy)
-
-	self.inertion.x = self.inertion.x * self.style.FRICT_HOLD
-	self.inertion.y = self.inertion.y * self.style.FRICT_HOLD
+	self.inertion.x = (self.inertion.x + dx) * self.style.FRICT_HOLD
+	self.inertion.y = (self.inertion.y + dy) * self.style.FRICT_HOLD
 
 	set_pos(self, self.target_pos)
 end
@@ -119,8 +98,10 @@ end
 
 
 local function check_threshold(self)
-	if vmath.length(self.inertion) < self.style.INERT_THRESHOLD then
+	if math.abs(self.inertion.x) < self.style.INERT_THRESHOLD then
 		self.inertion.x = 0
+	end
+	if math.abs(self.inertion.y) < self.style.INERT_THRESHOLD then
 		self.inertion.y = 0
 	end
 end
@@ -221,7 +202,7 @@ function M.init(self, view_zone, content_zone)
 
 	self.current_pos = gui.get_position(self.content_node)
 	self.target_pos = vmath.vector3(self.current_pos)
-	self.inertion = vmath.vector3()
+	self.inertion = vmath.vector3(0)
 
 	self.drag = self.druid:new_drag(view_zone, on_scroll_drag)
 	self.drag.on_touch_start:subscribe(on_touch_start)

druid/styles/default/style.lua

@@ -52,14 +52,14 @@ M["scroll"] = {
 	ANIM_SPEED = 0.3, -- gui.animation speed to point
 	SCROLL_WHEEL_SPEED = 10,
 
-	FRICT = 0.93, -- mult for free inert
-	FRICT_HOLD = 0.8, -- mult. for inert, while touching
+	FRICT = 0.94, -- mult for free inert
+	FRICT_HOLD = 0.75, -- mult. for inert, while touching
 	INERT_THRESHOLD = 2, -- speed to stop inertion
-	INERT_SPEED = 25, -- koef. of inert speed
-	EXTRA_STRECH_SIZE = vmath.vector4(-100, 100, 100, -100), -- size of outside zone (back move)
+	INERT_SPEED = 27, -- koef. of inert speed
 
-	BACK_SPEED = 0.2, -- lerp speed
-	LERP_SPEED = 1,
+	BACK_SPEED = 0.35, -- Lerp speed of return to soft position
+
+	EXTRA_STRECH_SIZE = vmath.vector4(-100, 100, 100, -100), -- size of outside zone (back move)
 }