courseplay = {};

function courseplay.prerequisitesPresent(specializations)
    return true;
	end

function courseplay:load()
	self.recordnumber = 1
	self.tmr = 1
	self.Waypoints = {}
	self.play = false
	self.back = false
end	
	
	
function courseplay:draw()
 	   	
		if not self.drive then
			if not self.record then
				g_currentMission:addHelpButtonText(g_i18n:getText("PointRecordStart"), InputBinding.PointRecord);
				if InputBinding.hasEvent(InputBinding.PointRecord) then 
					self.record = true
					self.drive  = false	
					self.tmr = 101
				end
			else
				g_currentMission:addHelpButtonText(g_i18n:getText("PointRecordStop"), InputBinding.PointRecord);
				if InputBinding.hasEvent(InputBinding.PointRecord) then 
					self.record = false
					self.drive  = false	
					self.play = true
					self.maxnumber = self.recordnumber - 1
                    self.back = false
				end
			end	
		end  
		
		if self.play then
			if not self.drive then 
				g_currentMission:addHelpButtonText(g_i18n:getText("CoursePlayStart"), InputBinding.CoursePlay);
				if InputBinding.hasEvent(InputBinding.CoursePlay) then 
					self.drive  = true
					self.record = true			
					
					self.sl = 3
					self.deactivateOnLeave = false
					self.stopMotorOnLeave = false
					if self.back then
						self.status = "rueckweg"
						self.recordnumber = self.maxnumber - 1
					else
						self.status = "hinweg"
						self.recordnumber = 1
					end	
				end	
			else
				g_currentMission:addHelpButtonText(g_i18n:getText("CoursePlayStop"), InputBinding.CoursePlay);
				if InputBinding.hasEvent(InputBinding.CoursePlay) then 
					self.record = false
					self.drive  = false	
					self.play = true
					self.motor:setSpeedLevel(0, false);
					self.motor.maxRpmOverride = nil;
					WheelsUtil.updateWheelsPhysics(self, 0, self.lastSpeed, 0, false, self.requiredDriveMode)
					self.recordnumber = 1
					self.deactivateOnLeave = true
					self.stopMotorOnLeave = true
				end
			end		
			
		end
		
		
			
end	
		
		
function courseplay:update()


	if self.record then 
		if self.tmr > 100 then	
			self.Waypoints[self.recordnumber] = {}
			local cx,cy,cz = getWorldTranslation(self.rootNode);
			self.Waypoints[self.recordnumber] = {cx = cx ,cy = cy ,cz = cz}
			
			self.tmr = 1
			self.recordnumber = self.recordnumber + 1
		end
		self.tmr = self.tmr + (self.lastSpeed * 100)
	end
	
	if	self.drive then
		local ctx,cty,ctz = getWorldTranslation(self.rootNode);
		cx ,cy ,cz = self.Waypoints[self.recordnumber].cx,self.Waypoints[self.recordnumber].cy,self.Waypoints[self.recordnumber].cz
		
		xr = math.floor(cx + 0.5)
		yr = math.floor(cy + 0.5)
		zr = math.floor(cz + 0.5)
		xpr = math.floor(ctx + 0.5)		   
		zpr = math.floor(ctz + 0.5) 
		xd = (xr - xpr) * (xr - xpr)
		zd = (zr - zpr) * (zr - zpr)
		self.dist = math.sqrt(math.abs(xd + zd) )
		
		if self.dist > 5 then
	
			local lx, lz = AIVehicleUtil.getDriveDirection(self.rootNode,xr,yr,zr);
			renderText(0.75,0.77,0.02, self.status); 
			AIVehicleUtil.driveInDirection(self, 1, 30, 0.5, 30, 30, true, true, lx, lz,self.sl, 0.9);
		else	
			if not self.back then
			   
				if self.recordnumber == 1 then
					self.sl = 3	
					
				else 
					if self.recordnumber >  self.maxnumber	- 4 then
						self.sl = 1
					end	
				end		
				if self.recordnumber < self.maxnumber  then
					self.recordnumber = self.recordnumber + 1
				else
					
					
					
					self.motor:setSpeedLevel(0, false);
					self.motor.maxRpmOverride = nil;
					WheelsUtil.updateWheelsPhysics(self, 0, self.lastSpeed, 0, false, self.requiredDriveMode)
					self.back = true
					self.record = false
						self.drive  = false	
						self.play = true
				end	
			else
				if self.status == "rueckweg" then	
					if self.recordnumber == self.maxnumber - 1 then
						self.sl = 3
						 
					else 
						if self.recordnumber <  4 then
							self.sl = 1
						end	
					end		
					if self.recordnumber > 1  then
						self.recordnumber = self.recordnumber - 1
					else
						self.record = false
						self.drive  = false	
						self.play = true
						self.motor:setSpeedLevel(0, false);
						self.motor.maxRpmOverride = nil;
						WheelsUtil.updateWheelsPhysics(self, 0, self.lastSpeed, 0, false, self.requiredDriveMode)
						self.recordnumber = 1
						self.back = false
						self.status = "am ziel"
					end	
				end	
			end
			
		end
	
	
	end	
	
end		

function courseplay:delete()
end;	

function courseplay:mouseEvent(posX, posY, isDown, isUp, button)
end		

function courseplay:keyEvent(unicode, sym, modifier, isDown)
end;