final14_Beta_UI.fsh

// Beta UI damajor.
// todo: rewrite this poor code
//
#version 130

uniform sampler2D sampler0;

uniform float aspectRatio;
uniform float displayWidth;
uniform float displayHeight;
uniform int health;
uniform int armor;

void
main ()
{
    vec4 baseColor = texture2D (sampler0, gl_TexCoord[0].st);
    vec4 color = baseColor;
#ifdef BETA_UI
    float cellInSize = cellSize - cellBorderSize;
    float dist = 10000000.0;
    float emptyHealthCell = 0.0;
    float emptyArmorCell = 0.0;
    float screenSide = 0.0;     // 0.0: left 1.0: right

    float d = -1.0;
    float d2 = -1.0;
    for (int i = 1; i <= 20; i++)
    {
        float d = distance (gl_TexCoord[0].xy, vec2 (stepSize, stepSize * i));
        float d2 =
            distance (gl_TexCoord[0].xy, vec2 (1 - stepSize, stepSize * i));
        if (d2 < d)
        {
            screenSide = 1.0;
            d = d2;
        }
        if (d < dist)
        {
            dist = d;
            if (i > health)
                emptyHealthCell = emptyHealthCellTransp;
            if (i > armor)
                emptyArmorCell = emptyArmorCellTransp;
        }
    }

    if (dist < cellSize)
    {
        if (dist < cellInSize)
        {
            float att = mainCellTransp;
            if ((screenSide == 1.0) && (armor >= 0 && armor <= 20))
            {
                att = att - emptyArmorCell;
                color = mix (baseColor, armorColor, att);
            }
            else if ((screenSide == 0.0) && (health >= 0 && health <= 20))
            {
                att = att - emptyHealthCell;
                color = mix (baseColor, healthColor, att);
            }
        }
        else
        {
            if ((screenSide == 1.0) && (armor >= 0 && armor <= 20))
            {
                color = armorColor;
            }
            else if ((screenSide == 0.0) && (health >= 0 && health <= 20))
            {
                color = healthColor;
            }
        }
    }
#endif
    gl_FragColor = color;
}