----------------------------------------------------------------------------------------------------
--
-- All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
-- its licensors.
--
-- For complete copyright and license terms please see the LICENSE at the root of this
-- distribution (the "License"). All use of this software is governed by the License,
-- or, if provided, by the license below or the license accompanying this file. Do not
-- remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
--
--
----------------------------------------------------------------------------------------------------
RigidBody = {
  type = "RigidBody",
  MapVisMask = 0,

	Properties = {
		soclasses_SmartObjectClass = "",
		bAutoGenAIHidePts = 0,

		objModel = "Objects/box.cgf",
		Density = 5000,
		Mass = 1,
		bResting = 1, -- If rigid body is originally in resting state.
		bVisible = 1, -- If rigid body is originally visible.
		bRigidBodyActive = 1, -- If rigid body is originally created OR will be created only on OnActivate.
		bActivateOnRocketDamage = 0, -- Activate when a rocket hit the entity.
		Impulse = {X=0,Y=0,Z=0}, -- Impulse to apply at event.
		max_time_step = 0.01,
		sleep_speed = 0.04,
		damping = 0,
		water_damping = 1.5,
		water_resistance = 0,	
	},
	temp_vec={x=0,y=0,z=0},
	PhysParams = { mass=0,density=0 },
	
	updateTime = 500,
	gravityUpdate = 0,
	
		Editor={
		Icon = "physicsobject.bmp",
		IconOnTop=1,
	},
}

-------------------------------------------------------
function RigidBody:OnInit()
	self.ModelName = "";
	self.Mass = 0;
	self:OnReset();
	
--	System.Log( "here1" );
end

-------------------------------------------------------
function RigidBody:OnReset()
	--self:NetPresent(nil);
	if (self.ModelName ~= self.Properties.objModel or self.Mass ~= self.Properties.Mass) then
		self.Mass = self.Properties.Mass;
		self.ModelName = self.Properties.objModel;
		self:LoadObject( 0,self.ModelName );

	end
	
	local Properties = self.Properties;

	if (Properties.bVisible == 0) then
		self:DrawSlot( 0,0 );
	else
		self:DrawSlot( 0,1 );
	end

	local physType;
	if (self.Properties.bRigidBodyActive == 1) then			
		physType = PE_RIGID;
		self.PhysParams.density = Properties.Density;
		self.PhysParams.mass = Properties.Mass;
	else
		physType = PE_STATIC;
	end

	self:Physicalize( 0,physType,self.PhysParams );
	self:SetPhysicParams(PHYSICPARAM_SIMULATION, self.Properties );
	self:SetPhysicParams(PHYSICPARAM_BUOYANCY, self.Properties );
	
	if (self.Properties.bResting == 0) then
		self:AwakePhysics(1);
	else
		self:AwakePhysics(0);
	end
	
	-- Mark AI hideable flag.
	if (self.Properties.bAutoGenAIHidePts == 1) then
		self:SetFlags(ENTITY_FLAG_AI_HIDEABLE, 0); -- set
	else
		self:SetFlags(ENTITY_FLAG_AI_HIDEABLE, 2); -- remove
	end

end

-------------------------------------------------------
function RigidBody:OnPropertyChange()
	self:OnReset();
end

-------------------------------------------------------
function RigidBody:OnContact( player )
	self:Event_OnTouch( player );
end

-------------------------------------------------------
function RigidBody:OnDamage( hit )
	--System.LogToConsole( "On Damage" );

	if( hit.ipart ) then
		self:AddImpulse( hit.ipart, hit.pos, hit.dir, hit.impact_force_mul );
--	else	
--		self:AddImpulse( -1, hit.pos, hit.dir, hit.impact_force_mul );
	end	

	if(self.Properties.bActivateOnRocketDamage)then
		if(hit.explosion)then
			self:AwakePhysics(1);
		end
	end
end

-------------------------------------------------------
function RigidBody:OnShutDown()
end

-------------------------------------------------------
function RigidBody:OnTimer()
--	System.Log("RigidBody OnTimer");
--	self:SetTimer( 0,1000 );
end

function RigidBody:OnUpdate()

	--FIXME: all this timing stuff will be replaced by OnTimer once it will work again
	self.gravityUpdate = self.gravityUpdate + _frametime;
	
	if (self.gravityUpdate < 0.5) then
		return;
	end
	
	self.gravityUpdate = 0.0;
	EntityUpdateGravity(self);
end

-------------------------------------------------------
-- Input events
-------------------------------------------------------
function RigidBody:Event_AddImpulse(sender)
	self.temp_vec.x=self.Properties.Impulse.X;
	self.temp_vec.y=self.Properties.Impulse.Y;
	self.temp_vec.z=self.Properties.Impulse.Z;
	self:AddImpulse(0,nil,self.temp_vec,1);
end

-------------------------------------------------------
function RigidBody:Event_Activate(sender)	

	--create rigid body 
	self:CreateRigidBody( self.Properties.Density,self.Properties.Mass,0 );

	self:Activate(1);
	self:AwakePhysics(1);
end

-------------------------------------------------------
function RigidBody:Event_Show(sender)
	self:DrawSlot( 0,1 );
end

-------------------------------------------------------
function RigidBody:Event_Hide(sender)
	self:DrawSlot( 0,0 );
end

-------------------------------------------------------
-- Output events
-------------------------------------------------------
function RigidBody:Event_OnTouch(sender)
	BroadcastEvent( self,"OnTouch" );
end

RigidBody.FlowEvents =
{
	Inputs =
	{
		Activate = { RigidBody.Event_Activate, "bool" },
		AddImpulse = { RigidBody.Event_AddImpulse, "bool" },
		Hide = { RigidBody.Event_Hide, "bool" },
		Show = { RigidBody.Event_Show, "bool" },
		OnTouch = { RigidBody.Event_OnTouch, "bool" },
	},
	Outputs =
	{
		Activate = "bool",
		AddImpulse = "bool",
		Hide = "bool",
		Show = "bool",
		OnTouch = "bool",
	},
}