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Update textures_screen_buffer.c

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Ray
2026-02-20 16:06:59 +01:00
parent f33823cefe
commit d996bf2bbd
1 changed files with 20 additions and 15 deletions
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35
examples/textures/textures_screen_buffer.c
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@ -52,6 +52,7 @@ int main(void)
float hue = t*t; float hue = t*t;
float saturation = t; float saturation = t;
float value = t; float value = t;
palette[i] = ColorFromHSV(250.0f + 150.0f*hue, saturation, value); palette[i] = ColorFromHSV(250.0f + 150.0f*hue, saturation, value);
} }
@ -68,7 +69,7 @@ int main(void)
{ {
int flame = (int)flameRootBuffer[x]; int flame = (int)flameRootBuffer[x];
flame += GetRandomValue(0, 2); flame += GetRandomValue(0, 2);
flameRootBuffer[x] = (flameInc > 255)? 255: (unsigned char)flame; flameRootBuffer[x] = (flame > 255)? 255: (unsigned char)flame;
} }
// Transfer flameRoot to indexBuffer // Transfer flameRoot to indexBuffer
@ -81,8 +82,7 @@ int main(void)
// Clear top row, because it can't move any higher // Clear top row, because it can't move any higher
for (int x = 0; x < imageWidth; x++) for (int x = 0; x < imageWidth; x++)
{ {
if (indexBuffer[x] == 0) continue; if (indexBuffer[x] != 0) indexBuffer[x] = 0;
indexBuffer[x] = 0;
} }
// Skip top row, it is already cleared // Skip top row, it is already cleared
@ -92,18 +92,22 @@ int main(void)
{ {
unsigned int i = x + y*imageWidth; unsigned int i = x + y*imageWidth;
unsigned char colorIndex = indexBuffer[i]; unsigned char colorIndex = indexBuffer[i];
if (colorIndex == 0) continue;
if (colorIndex != 0)
// Move pixel a row above {
indexBuffer[i] = 0; // Move pixel a row above
int moveX = GetRandomValue(0, 2) - 1; indexBuffer[i] = 0;
int newX = x + moveX; int moveX = GetRandomValue(0, 2) - 1;
if (newX < 0 || newX >= imageWidth) continue; int newX = x + moveX;
unsigned int iabove = i - imageWidth + moveX; if ((newX > 0) && (newX < imageWidth))
int decay = GetRandomValue(0, 3); {
colorIndex -= (decay < colorIndex)? decay : colorIndex; unsigned int iabove = i - imageWidth + moveX;
indexBuffer[iabove] = colorIndex; int decay = GetRandomValue(0, 3);
colorIndex -= (decay < colorIndex)? decay : colorIndex;
indexBuffer[iabove] = colorIndex;
}
}
} }
} }
@ -115,6 +119,7 @@ int main(void)
unsigned int i = x + y*imageWidth; unsigned int i = x + y*imageWidth;
unsigned char colorIndex = indexBuffer[i]; unsigned char colorIndex = indexBuffer[i];
Color col = palette[colorIndex]; Color col = palette[colorIndex];
ImageDrawPixel(&screenImage, x, y, col); ImageDrawPixel(&screenImage, x, y, col);
} }
} }