Please help me with my problem, my animations do not work (File attached)

Questions
#1

My enemy character keeps walking into the same wall over and over again, i have attached the code that is supposed to fix this but I cant figure out the problem

Capture

#2

I don’t see any code?

#3

code

#4

code.txt (4.3 KB)

local move_acceleration=8000
local max_speed=4000

local gravity=-1000

local ground_contact=false
local wall_contact=false

-- pre-has for system parameters to speed up process
local msg_contact_point_response=hash("contact_point_response")
local msg_animation_done=hash("animation_done")
local group_obstacle = hash("ground")
local group_wall = hash("wall")

-- animations
local anime_walk=hash("Walk")
local anim_idle=hash("Idle")
local anime_hit = hash("Hit")
local anime_attack=hash("Attack")





function init(self)
	-- Add initialization code here
	-- Learn more: https://defold.com/manuals/script/
	-- Remove this function if not needed
	-- init enemy velocity
	self.velocity=vmath.vector3(0,0,0)
	self.movement=1

	self.anim=nil
end

function final(self)
	-- Add finalization code here
	-- Learn more: https://defold.com/manuals/script/
	-- Remove this function if not needed

end

local function play_animation(self, anim)
	if self.anim ~= anim then
		msg.post("#sprite","play_animation",{id=anim})
		self.anim=anim
	end
end

local function update_animations(self)
	sprite.set_hflip("#sprite", self.movement<0)
	--go.set_rotation(vmath.quat_rotation_y(math.rad(180)))
	if (self.movement<0) then
		physics.set_hflip("#CollisionSkeleton", true);
		physics.set_hflip("#Hitbox", true);
	else
		physics.set_hflip("#CollisionSkeleton", false);
		physics.set_hflip("#Hitbox",false);
	end


	if (self.ground_contact) then
		if (self.velocity.x == 0) then
			play_animation(self,anim_idle)
		else
			play_animation(self,anim_walk)
		end
	end
end


function update(self, dt)
	-- Add update code here
	-- Learn more: https://defold.com/manuals/script/
	-- Remove this function if not needed

	local target_speed=self.movement*max_speed
	local speed_diff = target_speed-self.velocity.x

	local acceleration = vmath.vector3(0,gravity,0)

	if(speed_diff~=0) then
		if(speed_diff<0) then
			acceleration.x= - move_acceleration
		else
			acceleration.x = move_acceleration
		end

	end

	local dv = acceleration * dt
	if (math.abs(dv.x)>math.abs(speed_diff)) then
		dv.x = speed_diff
	end

	local v0 = self.velocity

	local v0 = self.velocity + dv

	local dp= (v0 +self.velocity) * dt * 0.5

	update_animations(self)

	go.set_position(go.get_position() + dp)
	self.correction=vmath.vector3()

	self.ground_contact=false
	self.wall_contact=false

end


local function handle_obstacle_contact(self,normal,distance)
	local proj=vmath.dot(self.correction, normal)
	local comp=(distance-proj)*normal

	self.correction=self.correction+comp

	go.set_position(go.get_position()+comp)

	if normal.y > 0.7 then
		self.ground_contact=true
	end

	proj=vmath.dot(self.velocity,normal)
	if proj<0 then
		self.velocity = self.velocity - proj*normal
	end
end


local function handle_wall_contact(self,normal,distance)
	local proj=vmath.dot(self.correction, normal)
	local comp=(distance-proj)*normal

	self.correction=self.correction+comp

	go.set_position(go.get_position()+comp)

	

	
	self.wall_contact=true
	self.movement=normal.x
	

	proj=vmath.dot(self.velocity,normal)
	if proj<0 then
		self.velocity = self.velocity - proj*normal
	end
end

function on_message(self, message_id, message, sender)
	-- Add message-handling code here
	-- Learn more: https://defold.com/manuals/message-passing/
	-- Remove this function if not needed

	if message_id == msg_contact_point_response then
		if message.other_group == group_obstacle then
			handle_obstacle_contact(self, message.normal, message.distance)
		elseif message.group == group_wall and not self.wall_contact then
			handle_wall_contact(self, message.normal, message.distance)
		end
	end
end

function on_input(self, action_id, action)
	-- Add input-handling code here. The game object this script is attached to
	-- must have acquired input focus:
	--
	--    msg.post(".", "acquire_input_focus")
	--
	-- All mapped input bindings will be received. Mouse and touch input will
	-- be received regardless of where on the screen it happened.
	-- Learn more: https://defold.com/manuals/input/
	-- Remove this function if not needed
end

function on_reload(self)
	-- Add reload-handling code here
	-- Learn more: https://defold.com/manuals/hot-reload/
	-- Remove this function if not needed
end
#5

I’d check the sign of the normal.x value to determine if the wall was to the left or right of the enemy and use this to flip direction of movement. Something like this in your handle_wall_contact() function:

if message.normal.x > 0 then
    self.movement.x = -math.abs(self.movement.x)
elseif message.normal < 0 then
   self.movement.x = math.abs(self.movement.x)
end

It may need to be the other way around on the sign before math.abs() but you’ll figure it out if you test.

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