Looking for a way to move a sprite faster but still smoothly

Manveru · Post by **Manveru** » Fri Dec 20, 2013 5:14 pm

Hello mates, and apologizes for any mistake translating this message to English.

I need to move a sprite in the screen faster than it usually does after every VDP_waitVSync update. If i increase the value of the movement, the sprite seems to be 'jumping' in the screen, but what i need is a smooth fast movement, so i need to update the position with a small value but more often (maybe some multi-threading?).

I hope you can help me with that. Thanks for your help and merry christmas to everyone.

TmEE co.(TM) · Post by **TmEE co.(TM)** » Fri Dec 20, 2013 5:34 pm

You are limited to the Vsync speed. There is no way to move the sprite faster without jumpiness effect.
If you need to move the sprite across the screen in 4 frames you have to have 320/4 pixel jumps each frame.

djcouchycouch · Post by **djcouchycouch** » Fri Dec 20, 2013 6:25 pm

how fast are you moving the sprite every frame?

You could add a kind of "blurred" sprite or a series of sprites behind the original one to fake speed blur.

Manveru · Post by **Manveru** » Fri Dec 20, 2013 10:35 pm

Thanks guys for your answers. Now i know that the speed can't be changed to be faster and also that i can use some tricks with some sprites to make a blur effect.

By the way i am working now with the ship of Thunder Force IV, and this problem was with the railgun lasers, which seemed too fast in the original game.

I managed to adjust the speed and the sprites in various times in the animation and i have obtained a good result, nearly as good as the original one, still with some jumpiness effects but i think it is ok for now.

Maybe i should have to discover some other "trick" to avoid that little of jumpiness, as in the Tecnosoft game.

Thanks again mates.