Help Sprites Simple Animation #1992
Replies: 2 comments 3 replies
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The problem is that the bitmap is drawn with a transparent colour therefore does not erase the old bitmap completely on the TFT screen and overprints just the image. Either clear the area of the screen or convert the background of the bitmap to white and do not use a transparent colour. Example here: |
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thank you for you reply i need the trasparent backround so the TFT_eSprite caracter can move on top TFT_eSPI image background thankx :) |
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Unfortunately it is quite complicated to to what I think you are trying to do. The display CGRAM is like a piece of paper, draw something on it and then draw something else without erasing the old drawing and you get a composite. One aproach is to keep a complete screen buffer and redraw the whole screen for every frame, then send each frame to the display. Another approach is to use a complete screen buffer and make a copy of the area where the bitmap 1 will go, then paste the bitmap. Before pasting the second bitmap you replace the saved area to erase the first bitmap then draw the second bitmap. This works if the background itself is not changing. |
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wow its gonna take many resource to re draw the background every time |
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I remember i tried a couple of years ago to spin a needle around a bitmap stored in SPIFFS |
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``first of all i'll really thank full this lib exist.
i have struggel with this problem for 5 days, i afraid to ask because maybe its stupid question (im only doing microcontroller for a year), but at this point i really deperate.
so i want to make sprite animation
i have 2 image C array
i just want in to show 1 after the other and loop again
the problem is its show the sprites on top of each other(without clean the previous sprites)
i try deletesprites method but no effect
i use TTGO BTC ticker (4MB PSRAM)
this is the code (am i doing it wrong?)
animation.ino :
bitmap.h :
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