#version 330 core

uniform sampler2D colorMap;

uniform vec3 camera;
uniform vec2 worldSize;
uniform vec2 screenSize;

out vec4 outColor;

void main()
{
    vec2 halfScreen = screenSize/2;
    vec2 screenPos = gl_FragCoord.xy/gl_FragCoord.w + camera.xy;
    vec2 texCoord = (screenPos-halfScreen)/200;
    vec3 texColor = texture(colorMap, texCoord).xyz;
    if(length(screenPos-halfScreen)*camera.z < 200)
        outColor = vec4(texColor, 1.0);
    else
        outColor = vec4(0.0, 0.5, 0.5, 1.0);
}