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anim_doom_fire_old.cpp
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anim_doom_fire_old.cpp
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#include "anim_doom_fire_old.h"
#include "gfx_2d.h"
#include "gfx_util.h"
// see: https://p3dt.net/post/2019/01/05/playing-with-doom.html
const uint16_t doomColorMap[36] = {
//
rgb565(0x00, 0x00, 0x00), // #000000
rgb565(0x1f, 0x07, 0x07), // #1f0707
rgb565(0x2f, 0x0f, 0x07), // #2f0f07
rgb565(0x47, 0x0f, 0x07), // #470f07
rgb565(0x57, 0x17, 0x07), // #571707
rgb565(0x67, 0x1f, 0x07), // #671f07
rgb565(0x77, 0x1f, 0x07), // #771f07
rgb565(0x8f, 0x27, 0x07), // #8f2707
rgb565(0x9f, 0x2f, 0x07), // #9f2f07
rgb565(0xaf, 0x3f, 0x07), // #af3f07
rgb565(0xbf, 0x47, 0x07), // #bf4707
rgb565(0xc7, 0x47, 0x07), // #c74707
rgb565(0xDF, 0x4F, 0x07), // #DF4F07
rgb565(0xDF, 0x57, 0x07), // #DF5707
rgb565(0xDF, 0x57, 0x07), // #DF5707
rgb565(0xD7, 0x5F, 0x07), // #D75F07
rgb565(0xD7, 0x67, 0x0F), // #D7670F
rgb565(0xcf, 0x6f, 0x0f), // #cf6f0f
rgb565(0xcf, 0x77, 0x0f), // #cf770f
rgb565(0xcf, 0x7f, 0x0f), // #cf7f0f
rgb565(0xCF, 0x87, 0x17), // #CF8717
rgb565(0xC7, 0x87, 0x17), // #C78717
rgb565(0xC7, 0x8F, 0x17), // #C78F17
rgb565(0xC7, 0x97, 0x1F), // #C7971F
rgb565(0xBF, 0x9F, 0x1F), // #BF9F1F
rgb565(0xBF, 0x9F, 0x1F), // #BF9F1F
rgb565(0xBF, 0xA7, 0x27), // #BFA727
rgb565(0xBF, 0xA7, 0x27), // #BFA727
rgb565(0xBF, 0xAF, 0x2F), // #BFAF2F
rgb565(0xB7, 0xAF, 0x2F), // #B7AF2F
rgb565(0xB7, 0xB7, 0x2F), // #B7B72F
rgb565(0xB7, 0xB7, 0x37), // #B7B737
rgb565(0xCF, 0xCF, 0x6F), // #CFCF6F
rgb565(0xDF, 0xDF, 0x9F), // #DFDF9F
rgb565(0xEF, 0xEF, 0xC7), // #EFEFC7
rgb565(0xFF, 0xFF, 0xFF) // #FFFFFF
};
void setupFire(uint8_t **firePixels, uint16_t w, uint16_t h) {
for (uint8_t y = 0; y < h; y++) {
for (uint8_t x = 0; x < w; x++) {
// last row is hot
firePixels[y][x] = y == h - 1 ? 35 : 0;
}
}
}
void calcFire(uint8_t **firePixels, uint16_t w, uint16_t h) {
for (uint8_t y = 0; y < h - 1; y++) {
for (uint8_t x = 0; x < w; x++) {
uint8_t wind = x + random(2);
wind = wind >= w ? wind - w : wind;
uint8_t speed = y + random(2);
speed = speed >= h ? h - 1 : speed;
firePixels[y][x] = firePixels[speed][wind] - random(2);
firePixels[y][x] = firePixels[y][x] > 35 ? 0 : firePixels[y][x]; // fix overflow
}
}
}
void mapFire(uint8_t **firePixels, uint16_t fireW, uint16_t fireH, //
Graphics2D *graphics2d, uint16_t offsetX, uint16_t offsetY) {
for (uint8_t x = 0; x < fireW; x++) {
for (uint8_t y = 0; y < fireH; y++) {
graphics2d->drawPixel(x + offsetX, y + offsetY, doomColorMap[firePixels[y][x]]);
}
}
}