56 lines
2.0 KiB
Arduino
56 lines
2.0 KiB
Arduino
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//This example shows the three methods of how sprites can be rendered on a VGA screen
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//You need to connect a VGA screen cable and an external DAC (simple R2R does the job) to the pins specified below.
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//cc by-sa 4.0 license
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//bitluni
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//include libraries
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#include <ESP32Lib.h>
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#include <Ressources/Font6x8.h>
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//include the sprites converted the SpriteConverter. Check the documentation for further infos.
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#include "explosion.h"
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//pin configuration
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const int redPins[] = {2, 4, 12, 13, 14};
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const int greenPins[] = {15, 16, 17, 18, 19};
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const int bluePins[] = {21, 22, 23, 27};
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const int hsyncPin = 32;
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const int vsyncPin = 33;
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//VGA Device
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VGA14Bit vga;
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//initial setup
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void setup()
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{
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//need double buffering
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vga.setFrameBufferCount(2);
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//initializing i2s vga
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vga.init(vga.MODE200x150, redPins, greenPins, bluePins, hsyncPin, vsyncPin);
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//setting the font
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vga.setFont(Font6x8);
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}
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//just draw each frame
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void loop()
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{
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//draw a background
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for (int y = 0; y < vga.yres / 10; y++)
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for (int x = 0; x < vga.xres / 10; x++)
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vga.fillRect(x * 10, y * 10, 10, 10, (x + y) & 1 ? vga.RGB(0, 128, 0) : vga.RGB(0, 0, 128));
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//print some labels
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vga.setCursor(36, 41);
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vga.print("draw drawMix drawAdd");
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//there are 20 sprites for the explosion. The second parameter is the index of the sprite.
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//We used the milliseconds to calculate the current index of the animation.
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//the last two parameters is the position. During the conversion of the sprite the origin of each sprite is defined.
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//check the Utilities folder for the converter
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//"draw" draws the sprite opaque ignoring any existing alpha channel
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explosion.draw(vga, (millis() / 50) % 20, vga.xres / 4, vga.yres / 2);
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//"drawMix" uses the alpha channel
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explosion.drawMix(vga, (millis() / 50) % 20, vga.xres / 2, vga.yres / 2);
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//"drawAdd" adds the color components of the back ground and the sprite
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explosion.drawAdd(vga, (millis() / 50) % 20, vga.xres * 3 / 4, vga.yres / 2);
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//swap the frame buffers and show the rendering
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vga.show();
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}
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