// ------------------------------------------------------------------------
void processWater(WavePixel[] source, WavePixel[] dest)
{
for (var i = WIDTH; i < TOTAL_PIXELS - WIDTH; i++)
{
// blend in from adjacent cells
dest[i].red = (((source[i-1].red + source[i+1].red + source[i-WIDTH].red + source[i+WIDTH].red) >> 1)) - dest[i].red;
dest[i].green = (((source[i-1].green + source[i+1].green + source[i-WIDTH].green + source[i+WIDTH].green) >> 1)) - dest[i].green;
dest[i].blue = (((source[i-1].blue + source[i+1].blue + source[i-WIDTH].blue + source[i+WIDTH].blue) >> 1)) - dest[i].blue;
dest[i].yellow = (((source[i-1].yellow + source[i+1].yellow + source[i-WIDTH].yellow + source[i+WIDTH].yellow) >> 1)) - dest[i].yellow;
// experimentation -- let colors combine powers
/*
int blue = dest[i].blue;
int red = dest[i].red;
int green = dest[i].green;
int yellow = dest[i].yellow;
int threshold = 1 << 7;
int threshold2 = 1 << 8;
int threshold3 = 1 << 9;
if (red > threshold && blue > threshold)
{
dest[i].red += blue >> 5; // 5
dest[i].blue += red >> 5;
}
if (red > threshold && green > threshold)
{
dest[i].red += green >> 5; // 5
dest[i].green += red >> 5;
}
if (red > threshold && yellow > threshold)
{
dest[i].red += yellow >> 5; // 5
dest[i].yellow += red >> 5;
}
if (blue > threshold && green > threshold)
{
dest[i].green += blue >> 5; // 5
dest[i].blue += green >> 5;
}
if (blue > threshold && yellow > threshold)
{
dest[i].yellow += blue >> 5; // 5
dest[i].blue += yellow >> 5;
}
if (green > threshold && yellow > threshold)
{
dest[i].green += yellow >> 5; // 5
dest[i].yellow += green >> 5;
}
//*/
/*
if (red > threshold2 && blue > threshold2 && green > threshold2)
{
dest[i].red += (blue >> 6) + (green >> 6); // 5
dest[i].blue += (red >> 6) + (green >> 6);
dest[i].green += (red >> 6) + (blue >> 6);
}
if (red > threshold2 && blue > threshold2 && yellow > threshold2)
{
dest[i].red += (blue >> 6) + (yellow >> 6); // 5
dest[i].blue += (red >> 6) + (yellow >> 6);
dest[i].yellow += (red >> 6) + (blue >> 6);
}
if (green > threshold2 && blue > threshold2 && yellow > threshold2)
{
dest[i].green += (blue >> 6) + (yellow >> 6); // 5
dest[i].blue += (green >> 6) + (yellow >> 6);
dest[i].yellow += (green >> 6) + (blue >> 6);
}
if (green > threshold2 && red > threshold2 && yellow > threshold2)
{
dest[i].green += (red >> 6) + (yellow >> 6); // 5
dest[i].red += (green >> 6) + (yellow >> 6);
dest[i].yellow += (green >> 6) + (blue >> 6);
}
//*/
/*
if (green > threshold3 && red > threshold3 && yellow > threshold3 && blue > threshold3)
{
dest[i].green += (red >> 7) + (yellow >> 7) + (blue >> 7); // 5
dest[i].red += (green >> 7) + (yellow >> 7) + (blue >> 7);
dest[i].yellow += (green >> 7) + (blue >> 7) + (red >> 7);
dest[i].blue += (green >> 7) + (yellow >> 7) + (red >> 7);
}
//*/
//
// dampen
//dest[i] -= (dest[i] >> 7);
//dest[i] -= (dest[i] >> 4);
int dampen_exponent = 4; //5;
/*
// testing out: the more active components, the less we dampen
int numcomponents =
((red > threshold) ? 1 : 0) +
((blue > threshold) ? 1 : 0) +
((green > threshold) ? 1 : 0) +
((yellow > threshold) ? 1 : 0);
dampen_exponent = 5 - numcomponents;
//*/
//
dest[i].red -= (dest[i].red >> dampen_exponent);
dest[i].green -= (dest[i].green >> dampen_exponent);
dest[i].blue -= (dest[i].blue >> dampen_exponent);
dest[i].yellow -= (dest[i].yellow >> dampen_exponent);
// clamp to non-negative -- breaks shit!
//dest[i].red = Mathf.Max(dest[i].red, 0);
//dest[i].green = Mathf.Max(dest[i].green, 0);
//dest[i].blue = Mathf.Max(dest[i].blue, 0);
//dest[i].yellow = Mathf.Max(dest[i].yellow, 0);
// if the colors are too powerful, clamp them
/*
int tooPowerful = (1 << 16); // 13
if (WavePixelAmplitude(dest[i]) > tooPowerful ||
WavePixelAmplitude(dest[i]) < -tooPowerful)
{
//dest[i].red = Mathf.Min(dest[i].red, tooPowerful/8);
//dest[i].green = Mathf.Min(dest[i].green, tooPowerful/8);
//dest[i].blue = Mathf.Min(dest[i].blue, tooPowerful/8);
//dest[i].yellow = Mathf.Min(dest[i].yellow, tooPowerful/8);
dest[i].red = 0;//dest[i].red >> 13; // 5, then 6
dest[i].green = 0;//dest[i].green >> 13;
dest[i].blue = 0;//dest[i].blue >> 13;
dest[i].yellow = 0;//dest[i].yellow >> 13;
}
//*/
// if radius is too far, dampen
if (i%WIDTH == 0)
{
dest[i].red = dest[i].green = dest[i].blue = dest[i].yellow = 0;
}
}
}
// ------------------------------------------------------------------------
public WavePixel GetPressure(Vector2 screenCoordinates)
{
WavePixel pressure = new WavePixel();
pressure.red = pressure.blue = pressure.green = pressure.yellow = 0;
// need to convert between real-space and grid-space
Vector2 gridCoordinates = ConvertScreenCoordinatesToGridCoordinates(screenCoordinates);
int grid_x = (int)(gridCoordinates.x);
int grid_y = (int)(gridCoordinates.y);
if (grid_x < 0 || grid_x >= WIDTH || grid_y < 0 || grid_y >= HEIGHT) return pressure;
if(counter % 2 == 0)
pressure = tmpState1[grid_y * WIDTH + grid_x];
else
pressure = tmpState2[grid_y * WIDTH + grid_x];
return pressure;
}
public static float WavePixelAmplitude(WavePixel pixel)
{
return pixel.red + pixel.green + pixel.blue + pixel.yellow;
}
public static float WavePixelAmplitude(Color enemyColor, WavePixel pixel)
{
//return (pixel.red * enemyColor.r) + (pixel.green * enemyColor.g) + (pixel.blue * enemyColor.b) + (pixel.yellow + (enemyColor.r + enemyColor.g)/2);
//
WavePixel temp = new WavePixel();
temp.red = pixel.red;
temp.blue = pixel.blue;
temp.green = pixel.green;
temp.yellow = pixel.yellow;
temp = CrossPollinateIntensity(temp);
return (temp.red * enemyColor.r) + (temp.green * enemyColor.g) + (temp.blue * enemyColor.b) + (temp.yellow + (enemyColor.r + enemyColor.g)/2);
/*
scaled.red = (int)(pixel.red * enemyColor.r);
scaled.blue = (int)(pixel.blue * enemyColor.b);
scaled.green = (int)(pixel.green * enemyColor.g);
scaled.yellow = (int)((enemyColor.r + enemyColor.g)/2);
//scaled = CrossPollinateIntensity(scaled);
return WavePixelAmplitude(scaled);
//return
// (pixel.red * enemyColor.r) +
// (pixel.green * enemyColor.g) +
// (pixel.blue * enemyColor.b) +
// (pixel.yellow + (enemyColor.r + enemyColor.g)/2);
//*/
}
//*/
public static WavePixel CrossPollinateIntensity(WavePixel input)
{
WavePixel output = input;
int blue = output.blue;
int red = output.red;
int green = output.green;
int yellow = output.yellow;
int threshold = 1 << 7;
int threshold2 = 1 << 8;
int threshold3 = 1 << 9;
if (red > threshold && blue > threshold)
{
output.red += blue >> 5; // 5
output.blue += red >> 5;
}
if (red > threshold && green > threshold)
{
output.red += green >> 5; // 5
output.green += red >> 5;
}
if (red > threshold && yellow > threshold)
{
output.red += yellow >> 5; // 5
output.yellow += red >> 5;
}
if (blue > threshold && green > threshold)
{
output.green += blue >> 5; // 5
output.blue += green >> 5;
}
if (blue > threshold && yellow > threshold)
{
output.yellow += blue >> 5; // 5
output.blue += yellow >> 5;
}
if (green > threshold && yellow > threshold)
{
output.green += yellow >> 5; // 5
output.yellow += green >> 5;
}
//*/
/*
if (red > threshold2 && blue > threshold2 && green > threshold2)
{
output.red += (blue >> 6) + (green >> 6); // 5
output.blue += (red >> 6) + (green >> 6);
output.green += (red >> 6) + (blue >> 6);
}
if (red > threshold2 && blue > threshold2 && yellow > threshold2)
{
output.red += (blue >> 6) + (yellow >> 6); // 5
output.blue += (red >> 6) + (yellow >> 6);
output.yellow += (red >> 6) + (blue >> 6);
}
if (green > threshold2 && blue > threshold2 && yellow > threshold2)
{
output.green += (blue >> 6) + (yellow >> 6); // 5
output.blue += (green >> 6) + (yellow >> 6);
output.yellow += (green >> 6) + (blue >> 6);
}
if (green > threshold2 && red > threshold2 && yellow > threshold2)
{
output.green += (red >> 6) + (yellow >> 6); // 5
output.red += (green >> 6) + (yellow >> 6);
output.yellow += (green >> 6) + (blue >> 6);
}
//*/
/*
if (green > threshold3 && red > threshold3 && yellow > threshold3 && blue > threshold3)
{
output.green += (red >> 7) + (yellow >> 7) + (blue >> 7); // 5
output.red += (green >> 7) + (yellow >> 7) + (blue >> 7);
output.yellow += (green >> 7) + (blue >> 7) + (red >> 7);
output.blue += (green >> 7) + (yellow >> 7) + (red >> 7);
}
//*/
return output;
}
