#version 330 core
in vec2 TexCoords;
out vec4 color;

uniform sampler2D image;

uniform float posX;
uniform float posY;
uniform int animRow;
uniform int animCol;
uniform int rows;
uniform int cols;
uniform int spriteWidth;
uniform int spriteHeight;
uniform int atlasWidth;
uniform int atlasHeight;

// Unused for now
uniform vec3 spriteColor;

void main() {
    float rw = (float(spriteWidth) / float(atlasWidth));
    float rh = (float(spriteHeight) / float(atlasHeight));
    float x = TexCoords.x * rw + posX + animRow * rw;
    float y = TexCoords.y * rh + (posY / float(atlasHeight)) + animCol * rh;

    float minb = 0.005;
    float maxb = 0.995;
    bool drawDebugBorders =
        TexCoords.x <= minb || TexCoords.x >= maxb
        || TexCoords.y <= minb || TexCoords.y >= maxb;
    if (drawDebugBorders) {
        color = vec4(1,0,0,1);
    } else {
        color = texture(image, vec2(x, y));
    }
}