#version 460
in vec2 TexCoord;
in vec4 WldPos;
in vec3 Normal;

in mat3 TBN;

layout(location = 0) out vec4 FragColor;
layout(location = 1) out int ObjId;
layout(location = 2) out vec4 WorldPos;
uniform sampler2D TextureSampler;
uniform sampler2D NormalMapSampler;
uniform sampler2D EmmissionMapSampler;
uniform sampler2D SpecularMapSampler;
uniform sampler2D TeamcolorMap;
uniform sampler2D ShadowMapSampler;
uniform int ObjIdIn;
uniform vec4 ObjColor;
uniform vec3 LightDirection;
uniform vec3 CameraPosition;
uniform vec3 CamFwdDir;
uniform int TeamId;

vec4 TeamIdColors[3] = vec4[3](vec4(0.41568628f, 0.74901962f, 0.04705882f, 1.00000000f ),
                               vec4(1.00000000f, 0.89999998f, 0.00000000f, 1.00000000f ),
                               vec4(0.55000001f, 0.05000000f, 0.50000000f, 1.00000000f ));

float calcMissing(vec3 normal){
    return abs(sqrt(1-(normal.x*normal.x+normal.y*normal.y)));
}

vec4 transition(vec4 v1,vec4 v2,float val){
    return v1 * val + v2 * (1-val);
}

void main(){

    vec3 CamDir = normalize(CameraPosition - WldPos.xyz);

    vec3 normal = vec3(texture(NormalMapSampler, TexCoord));

    normal = normal * 2.0 - 1.0;

    normal.y = -normal.y;

    normal.z = calcMissing(normal);

    normal = normalize(TBN * normal);

    ObjId = ObjIdIn;
    WorldPos = vec4(WldPos.xyz,1);
    //if(WldPos.w == 0) WorldPos=vec4(WldPos.xyz,1);
    vec4 textel = texture(TextureSampler,TexCoord);
    if(textel.a < 0.3) discard;
    //textel.a = (CamPos.z / CamPos.w) / 100;
    vec4 col = textel * ObjColor;

    FragColor = vec4(col.rgb *  min(0.35 + dot(CamDir,normal),1),col.a);

    FragColor *= transition(TeamIdColors[TeamId],vec4(1,1,1,1), texture(TeamcolorMap, TexCoord).a);
    //FragColor = vec4(1,1,1,1);
}