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script.lua

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+-- Texture dimensions --
+size = 128
+factor = size / 64
+-- Values for UV mappings --
+face_damage=0
+face_expr=0
+step_u_face=32
+step_v_face=16
+offset_u_face=64
+offset_v_face=0
+
+-- initialize values --
+function player_init()
+	old_health=player.getHealth()
+end
+expr_cooldown=0
+
+-- Parts --
+HEAD=model.Head.Head
+
+-- Initial configuration --
+for key, value in pairs(vanilla_model) do
+    value.setEnabled(false)
+end
+vanilla_model.CAPE.setEnabled(true)
+
+-- Expression change --
+function getExprUV(damage, expression)
+	local u=offset_u_face+(damage*step_u_face)
+	local v=offset_v_face+(expression*step_v_face)
+	return {u/size,v/size}
+end
+function changeExpression(_damage, _expression, ticks)
+	-- u is damage, v is expression
+	local damage = _damage
+	local expression = _expression
+	if damage == nil then
+		damage = face_damage
+	end
+	if expression == nil then
+		expression = face_expr
+	end
+
+	HEAD.setUV(getExprUV(damage,expression))
+	expr_cooldown=ticks
+end
+function setExpression(damage, expression)
+	face_damage=damage
+	face_expr=expression
+	HEAD.setUV(getExprUV(damage, expression))
+end
+function resetExpression()
+	HEAD.setUV(getExprUV(face_damage,face_expr))
+end
+
+-- Action Wheel --
+action_wheel.SLOT_1.setTitle('test expression')
+action_wheel.SLOT_1.setFunction(function() ping.expressionTest() end)
+function ping.expressionTest()
+	setExpression(1,0)
+	changeExpression(nil, 1, 10)
+end
+action_wheel.SLOT_2.setTitle('log health')
+action_wheel.SLOT_2.setFunction(function() print(player.getHealth()) end)
+
+-- Pings --
+--- Damage function --
+function ping.oof(health)
+	if health <= 5 then
+		setExpression(1,0)
+	end
+	changeExpression(nil,1,10)
+end
+--- Heal function (revert expression) --
+function ping.healed(health)
+	setExpression(0,0)
+end
+
+
+-- does not work on multiplayer, use ping.oof()
+function onDamage(amount, source)
+end
+
+-- Tick function --
+function tick()
+	-- expression reset spaghetti code --
+	if expr_cooldown > 0 then
+		expr_cooldown = expr_cooldown-1
+		if expr_cooldown <= 0 then
+			resetExpression()
+		end
+	end
+
+	-- optimization, only execute these once a second --
+	if world.getTimeOfDay() % 20 then
+		-- if face is cracked
+		if face_damage==1 and player.getHealth() > 5 then
+			ping.healed()
+		end
+	end
+
+	-- Damage ping (onDamage doesn't work in multiplayer) --
+	if old_health>player.getHealth() then
+		-- debug
+		-- print(string.format('old_health=%03.2f, player.getHealth=%03.2f', old_health,player.getHealth()))
+		ping.oof(player.getHealth())
+	end
+
+	-- End of tick --
+	old_health=player.getHealth()
+end
+