Truck Fenderbender and Truck wont run

[GruntTruck]

My tacoma was hit this past wedensday and it was hit in the front driver fender right under the turn signal which didnt break. I drove it home and went on a buisness trip. I had noticed that the tire had a smudge mark from where the lady that backed into had hit the fender and tire. I tried to crank it up yesterday and it gave a wierd whirr like the starter hadnt made contact with the fly wheel. I gave it a rest and tried 5 min later and it wouldnt start untill I gave it gas, I let off and it died and I looked behind me to see the backend smothered in blue smoke. I about hit the roof but I tried again and smoke poured out from the exhaust. I about lost it there. My father tried later and it cranked and spit and sputtered and wouldnt idel evenly and stalled and kept the check engine light on and wouldnt run right. I checked the oil levels and it looks like its missing maybe 1/4 to a 1/2 of a quart which I looked under the car and didnt see an oil spot. I use mobil 1 full synthetic 10-W30. Its got 16k miles on it. Any tips or help would be helpfull. Toyotas just dont do this crap for no reason. Thanks in advance.

[invalidalias]

my guess would be a blown head gasket. Is there water in the engine. They make them reliable, though tough is another question.