#include "Character.h"
#include <cmath>
#include <iostream>
#include "GameConstants.h"
#include "Environment.h"

namespace ZL {

	const float ATTACK_COOLDOWN_TIME = 3.0f; 
    extern float x;
    extern float y;

void Character::loadAnimation(AnimationState state, const std::string& filename, const std::string& zipFile) {
    auto& data = animations[state];
    data.model.LoadFromFile(filename, zipFile);
    if (!data.model.animations.empty() && !data.model.animations[0].keyFrames.empty()) {
        data.totalFrames = data.model.animations[0].keyFrames.back().frame + 1;
    } else {
        data.totalFrames = 1;
    }
}
void Character::loadBinaryAnimation(AnimationState state, const std::string& filename, const std::string& zipFile) {
    auto& data = animations[state];
    data.model.LoadFromBinaryFile(filename, zipFile);
    if (!data.model.animations.empty() && !data.model.animations[0].keyFrames.empty()) {
        data.totalFrames = data.model.animations[0].keyFrames.back().frame + 1;
    }
    else {
        data.totalFrames = 1;
    }
}

void Character::setTarget(const Eigen::Vector3f& target,
                          std::function<void()> onArrived) {
    Eigen::Vector3f normalizedTarget(target.x(), 0.f, target.z());

    const bool sameRequestedTarget =
        (normalizedTarget - requestedWalkTarget).norm() <= TARGET_REPLAN_THRESHOLD;
    const bool alreadyMovingToTarget =
        !pathWaypoints.empty() || (walkTarget - normalizedTarget).norm() <= TARGET_REPLAN_THRESHOLD;
    const bool stoppedAfterFailedPath =
        pathWaypoints.empty() && (walkTarget - position).norm() <= TARGET_REPLAN_THRESHOLD;

    if (!onArrived && sameRequestedTarget && (alreadyMovingToTarget || stoppedAfterFailedPath)) {
        return;
    }

    requestedWalkTarget = normalizedTarget;
    onArrivedCallback = std::move(onArrived);

    if (pathPlanner) {
        pathWaypoints = pathPlanner(position, normalizedTarget);
        currentWaypointIndex = 0;

        if (!pathWaypoints.empty()) {
            for (Eigen::Vector3f& waypoint : pathWaypoints) {
                waypoint.y() = 0.f;
            }
            walkTarget = pathWaypoints.back();
            return;
        }

        walkTarget = Eigen::Vector3f(position.x(), 0.f, position.z());
        onArrivedCallback = nullptr;
        return;
    }

    pathWaypoints.clear();
    currentWaypointIndex = 0;
    walkTarget = normalizedTarget;
}

void Character::setPathPlanner(PathPlanner planner) {
    pathPlanner = std::move(planner);
}

void Character::setTexture(std::shared_ptr<ZL::Texture> texture)
{
    for (auto& animEntry : animations) {
        for (const auto& name : animEntry.second.model.meshNamesOrdered) {
            meshTextures[name] = texture;
        }
    }
}

void Character::setTexture(const std::string& meshName, std::shared_ptr<Texture> tex) {
    meshTextures[meshName] = std::move(tex);
}
/*
void Character::setTexture(std::shared_ptr<Texture> tex) {
    for (auto& animEntry : animations) {
        for (const auto& name : animEntry.second.model.meshNamesOrdered) {
            meshTextures[name] = tex;
        }
    }
}
*/
AnimationState Character::resolveActiveState() const {
    
    if (animations.count(currentState)) return currentState;
    return AnimationState::STAND;
}

void Character::update(int64_t deltaMs) {

	//weaponInitialRotation = Eigen::AngleAxisf(x/180.0, Eigen::Vector3f::UnitZ()).toRotationMatrix();
    //weaponInitialRotation = Eigen::AngleAxisf(-M_PI*0.5, Eigen::Vector3f::UnitZ()).toRotationMatrix();
	//weaponInitialPosition = Eigen::Vector3f(0, 0.09, 0.016);
     /*if (deltaMs > 200)
    {
        deltaMs = 200;
    }*/
    Eigen::Vector3f activeTarget;
    Eigen::Vector3f lookTarget;

    if (attackTarget == nullptr)
    {
        battle_state = 0;
        attack = 0;
    }

    if (attackTarget != nullptr)
    {
        float distToGhost = (attackTarget->position - position).norm();
        if (distToGhost >= 10.f)
        {
            if (isPlayer)
            {
                setTarget(attackTarget->position);
            }
            battle_state = 0;
           
        }
        else if (distToGhost < 10.0f && distToGhost >= 1.f) {
            setTarget(attackTarget->position);
            battle_state = 0;
        }
        else
        {
            battle_state = 1;
        }
    }
    
    
    if (!pathWaypoints.empty() && currentWaypointIndex < pathWaypoints.size()) {
        activeTarget = pathWaypoints[currentWaypointIndex];
    }
    else
    {

        activeTarget = walkTarget;
    }

    if (battle_state == 0)
    {
        lookTarget = activeTarget;
    }
    else
    {
		lookTarget = attackTarget->position;
    }

    targetFacingAngle = facingAngle;

    if (currentState == AnimationState::WALK || currentState == AnimationState::STAND)
    {
        Eigen::Vector3f toTarget = activeTarget - position;
        toTarget.y() = 0.f;
        float dist = toTarget.norm();

        if (dist > WALK_THRESHOLD) {
            Eigen::Vector3f dir = toTarget / dist;
            float moveAmount = walkSpeed * static_cast<float>(deltaMs) / 1000.f;
            if (moveAmount >= dist) {
                position = activeTarget;
                position.y() = 0.f;
            }
            else {
                position += dir * moveAmount;
            }
            targetFacingAngle = atan2(dir.x(), -dir.z());
            currentState = AnimationState::WALK;
        }
        else {
            currentState = AnimationState::STAND;

            const bool hasNextWaypoint = !pathWaypoints.empty() && currentWaypointIndex + 1 < pathWaypoints.size();
            if (hasNextWaypoint) {
                ++currentWaypointIndex;
            }
            else {
                    pathWaypoints.clear();
                    currentWaypointIndex = 0;
            }

            if (!hasNextWaypoint && onArrivedCallback) {
                    auto cb = std::move(onArrivedCallback);
                    onArrivedCallback = nullptr;
                    cb();
            }

            targetFacingAngle = facingAngle;
        }
    }
    
    if (battle_state == 1)
    {
        targetFacingAngle = atan2(lookTarget.x() - position.x(), -(lookTarget.z() - position.z()));

        if (currentState == AnimationState::STAND || currentState == AnimationState::WALK) {
            currentState = AnimationState::STAND_TO_ACTION;
            resetAnim = true;
        }

        if (canAttack && attack == 0 && attack_cooldown < 0.f && currentState == AnimationState::ACTION_IDLE)
        {
            attack = 1;
            attack_cooldown = ATTACK_COOLDOWN_TIME;
        }
        if (canAttack && attack_cooldown >= 0.f)
        {
            attack_cooldown = attack_cooldown - deltaMs / 1000.f;
        }

        if (attack == 1 && currentState == AnimationState::ACTION_IDLE)
        {
            currentState = AnimationState::ACTION_ATTACK;
            resetAnim = true;
        }
    }
    else
    {
        if (currentState == AnimationState::STAND_TO_ACTION
            || currentState == AnimationState::ACTION_IDLE
            || currentState == AnimationState::ACTION_ATTACK
            ) {
            currentState = AnimationState::ACTION_TO_STAND;
            resetAnim = true;
        }
    }

    // Rotate toward target facing angle at constant angular speed
    float angleDiff = targetFacingAngle - facingAngle;
    while (angleDiff >  static_cast<float>(M_PI)) angleDiff -= 2.f * static_cast<float>(M_PI);
    while (angleDiff < -static_cast<float>(M_PI)) angleDiff += 2.f * static_cast<float>(M_PI);
    float rotStep = rotationSpeed * static_cast<float>(deltaMs) / 1000.f;
    if (std::fabs(angleDiff) <= rotStep) {
        facingAngle = targetFacingAngle;
    } else {
        facingAngle += (angleDiff > 0.f ? rotStep : -rotStep);
    }

    

    auto it = animations.find(currentState);
    if (it == animations.end()) return;

    auto& anim = it->second;

    if (resetAnim)
    {
        resetAnim = false;
        anim.currentFrame = 0;
    }
    anim.currentFrame += static_cast<float>(deltaMs) / 24.f;

    //std::cout << "Current animation frame: " << anim.currentFrame << " / " << anim.totalFrames << " -- " << anim.lastFrame << std::endl;
    
    if (static_cast<int>(anim.currentFrame) >= 20 && currentState == AnimationState::STAND_TO_ACTION)
    {
            showWeapon = true;
    }
    else if (static_cast<int>(anim.currentFrame) <= 32 && currentState == AnimationState::ACTION_TO_STAND)
    {
            showWeapon = true;
    }
    else
    {
            showWeapon = false;
    }
    
    int frms = anim.model.animations[0].keyFrames[anim.model.animations[0].keyFrames.size() - 1].frame;
    if (static_cast<int>(anim.currentFrame) >= frms) {
        anim.currentFrame = anim.model.startingFrame;

        if (currentState == AnimationState::STAND_TO_ACTION)
        {
            currentState = AnimationState::ACTION_IDLE;
			resetAnim = true;
        }
        if (currentState == AnimationState::ACTION_TO_STAND)
        {
            currentState = AnimationState::STAND;
            resetAnim = true;
        }

		if (currentState == AnimationState::ACTION_ATTACK)
        {
            currentState = AnimationState::ACTION_IDLE;
            resetAnim = true;
            attack = 0;
        }
    }


    if (static_cast<int>(anim.currentFrame) != anim.lastFrame) {
        anim.gpuSkinningShaderData.ComputeSkinningMatrices(anim.model.startBones, anim.model.animations[0].keyFrames, static_cast<int>(anim.currentFrame));
        if (!useGpuSkinning) {
            anim.model.Interpolate(static_cast<int>(anim.currentFrame));
        }
        anim.lastFrame = static_cast<int>(anim.currentFrame);
    }
}

void Character::draw(Renderer& renderer) {
    if (useGpuSkinning) {
        drawGpuSkinning(renderer);
        return;
    }

    AnimationState drawState = resolveActiveState();
    auto it = animations.find(drawState);
    if (it == animations.end()) return;

    renderer.shaderManager.PushShader(defaultShaderName);
    renderer.RenderUniform1i(textureUniformName, 0);

    renderer.PushPerspectiveProjectionMatrix(1.0 / 1.5,
        static_cast<float>(Environment::width) / static_cast<float>(Environment::height),
        Environment::CONST_Z_NEAR, Environment::CONST_Z_FAR);

    renderer.PushMatrix();
    renderer.TranslateMatrix({ position.x(), position.y(), position.z() });
    renderer.RotateMatrix(Eigen::Quaternionf(Eigen::AngleAxisf(-facingAngle, Eigen::Vector3f::UnitY())).toRotationMatrix());
    renderer.ScaleMatrix(modelScale);
    renderer.RotateMatrix(modelCorrectionRotation.toRotationMatrix());

    auto& anim = it->second;
    for (const auto& name : anim.model.meshNamesOrdered) {
        auto mit = anim.model.meshes.find(name);
        if (mit == anim.model.meshes.end()) continue;
        auto tit = meshTextures.find(name);
        if (tit == meshTextures.end() || !tit->second) continue;
        glBindTexture(GL_TEXTURE_2D, tit->second->getTexID());
        modelMutable.AssignFrom(mit->second.mesh);
        modelMutable.RefreshVBO();
        renderer.DrawVertexRenderStruct(modelMutable);
    }

    renderer.PopMatrix();

    drawAttachedWeapon(renderer);

    renderer.PopProjectionMatrix();
    renderer.shaderManager.PopShader();
}

void Character::drawGpuSkinning(Renderer& renderer) {
    AnimationState drawState = resolveActiveState();
    auto it = animations.find(drawState);
    if (it == animations.end())
    {
        return;
    }

    auto& anim = it->second;
    anim.gpuSkinningShaderData.prepareGpuSkinningVBOs(anim.model);

    if (anim.gpuSkinningShaderData.skinningMatrices.empty())
    {
        if (anim.model.animations.empty() || anim.model.animations[0].keyFrames.empty()) return;
		
        anim.gpuSkinningShaderData.ComputeSkinningMatrices(anim.model.startBones, anim.model.animations[0].keyFrames, static_cast<int>(anim.currentFrame));
      
        if (anim.gpuSkinningShaderData.skinningMatrices.empty()) return;
    }
    static const std::string skinningShaderName = "skinning";
    static const std::string boneMatricesUniform = "uBoneMatrices[0]";

    renderer.shaderManager.PushShader(skinningShaderName);
    renderer.RenderUniform1i(textureUniformName, 0);

    renderer.PushPerspectiveProjectionMatrix(1.0 / 1.5,
        static_cast<float>(Environment::width) / static_cast<float>(Environment::height),
        Environment::CONST_Z_NEAR, Environment::CONST_Z_FAR);

    renderer.PushMatrix();
    renderer.TranslateMatrix({ position.x(), position.y(), position.z() });
    renderer.RotateMatrix(Eigen::Quaternionf(Eigen::AngleAxisf(-facingAngle, Eigen::Vector3f::UnitY())).toRotationMatrix());
    renderer.ScaleMatrix(modelScale);
    renderer.RotateMatrix(modelCorrectionRotation.toRotationMatrix());

    // Upload bone skinning matrices
    renderer.RenderUniformMatrix4fvArray(boneMatricesUniform,
        static_cast<int>(anim.gpuSkinningShaderData.skinningMatrices.size()), false,
        anim.gpuSkinningShaderData.skinningMatrices[0].data());

    for (const auto& name : anim.model.meshNamesOrdered) {
        auto pit = anim.gpuSkinningShaderData.perMesh.find(name);
        if (pit == anim.gpuSkinningShaderData.perMesh.end()) continue;
        auto tit = meshTextures.find(name);
        if (tit == meshTextures.end() || !tit->second) continue;
        glBindTexture(GL_TEXTURE_2D, tit->second->getTexID());
        pit->second.RenderVBO(renderer);
    }

    renderer.PopMatrix();

    renderer.shaderManager.PushShader(defaultShaderName);
    renderer.RenderUniform1i(textureUniformName, 0);
    drawAttachedWeapon(renderer);
    renderer.shaderManager.PopShader();

    renderer.PopProjectionMatrix();
    renderer.shaderManager.PopShader();
}

bool Character::prepareGpuSkinning()
{
    AnimationState drawState = resolveActiveState();
    auto it = animations.find(drawState);
    if (it == animations.end())
    {
        return false;
    }

    auto& anim = it->second;
    anim.gpuSkinningShaderData.prepareGpuSkinningVBOs(anim.model);
    if (anim.gpuSkinningShaderData.skinningMatrices.empty()) {
        if (anim.model.animations.empty() || anim.model.animations[0].keyFrames.empty())
        {
            return false;
        }

        anim.gpuSkinningShaderData.ComputeSkinningMatrices(anim.model.startBones, anim.model.animations[0].keyFrames, static_cast<int>(anim.currentFrame));

        if (anim.gpuSkinningShaderData.skinningMatrices.empty())
        {
            return false;
        }
    }

    return true;
}

void Character::drawAttachedWeapon(Renderer& renderer)
{
    if (!showWeapon) return;
    if (weaponMesh.data.PositionData.size() == 0 || !weaponTexture) return;

    auto it = animations.find(resolveActiveState());
    if (it == animations.end()) return;

    auto& anim = it->second;
    if (anim.gpuSkinningShaderData.skinningMatrices.empty()) return;

    int boneIdx = anim.model.findBoneIndex(weaponAttachBoneName);
    if (boneIdx < 0) return;

    const Eigen::Matrix4f& bindBone = anim.model.animations[0].keyFrames[0].bones[boneIdx].boneMatrixWorld;
    Eigen::Matrix4f currentBone = anim.gpuSkinningShaderData.skinningMatrices[boneIdx] * bindBone;

    renderer.PushMatrix();
    renderer.TranslateMatrix({ position.x(), position.y(), position.z() });
    renderer.RotateMatrix(Eigen::Quaternionf(Eigen::AngleAxisf(-facingAngle, Eigen::Vector3f::UnitY())).toRotationMatrix());
    renderer.ScaleMatrix(modelScale);
    renderer.RotateMatrix(modelCorrectionRotation.toRotationMatrix());
    renderer.TranslateMatrix(Eigen::Vector3f(currentBone.block<3, 1>(0, 3)));
    renderer.RotateMatrix(Eigen::Matrix3f(currentBone.block<3, 3>(0, 0)));
    renderer.TranslateMatrix(weaponInitialPosition);
    renderer.RotateMatrix(weaponInitialRotation);

    glBindTexture(GL_TEXTURE_2D, weaponTexture->getTexID());
    renderer.DrawVertexRenderStruct(weaponMesh);
    renderer.PopMatrix();
}

// ==================== Shadow depth pass ====================

void Character::drawShadowDepth(Renderer& renderer) {
    if (useGpuSkinning) {
        drawShadowDepthGpuSkinning(renderer);
    } else {
        drawShadowDepthCpu(renderer);
    }
}

void Character::drawShadowDepthCpu(Renderer& renderer) {
    AnimationState drawState = resolveActiveState();
    auto it = animations.find(drawState);
    if (it == animations.end()) return;

    // The caller has already pushed the shadow_depth shader and the
    // light's projection + view onto the renderer stacks.
    renderer.PushMatrix();
    renderer.TranslateMatrix({ position.x(), position.y(), position.z() });
    renderer.RotateMatrix(Eigen::Quaternionf(Eigen::AngleAxisf(-facingAngle, Eigen::Vector3f::UnitY())).toRotationMatrix());
    renderer.ScaleMatrix(modelScale);
    renderer.RotateMatrix(modelCorrectionRotation.toRotationMatrix());

    auto& anim = it->second;
    for (const auto& name : anim.model.meshNamesOrdered) {
        auto mit = anim.model.meshes.find(name);
        if (mit == anim.model.meshes.end()) continue;
        auto tit = meshTextures.find(name);
        if (tit == meshTextures.end() || !tit->second) continue;
        modelMutable.AssignFrom(mit->second.mesh);
        modelMutable.RefreshVBO();
        renderer.DrawVertexRenderStruct(modelMutable);
    }
    renderer.PopMatrix();

    drawAttachedWeapon(renderer);
}

void Character::drawShadowDepthGpuSkinning(Renderer& renderer) {

	CheckGlError(__FILE__, __LINE__);
    AnimationState drawState = resolveActiveState();
    auto it = animations.find(drawState);
    if (it == animations.end()) return;

    CheckGlError(__FILE__, __LINE__);

	if (!prepareGpuSkinning()) return;

    CheckGlError(__FILE__, __LINE__);

    static const std::string shadowSkinningShader = "shadow_depth_skinning";
    static const std::string boneMatricesUniform = "uBoneMatrices[0]";

    // Switch to the skinning depth shader (caller has the static depth shader active).
    renderer.shaderManager.PushShader(shadowSkinningShader);

    renderer.PushMatrix();
    renderer.TranslateMatrix({ position.x(), position.y(), position.z() });
    renderer.RotateMatrix(Eigen::Quaternionf(Eigen::AngleAxisf(-facingAngle, Eigen::Vector3f::UnitY())).toRotationMatrix());
    renderer.ScaleMatrix(modelScale);
    renderer.RotateMatrix(modelCorrectionRotation.toRotationMatrix());

    CheckGlError(__FILE__, __LINE__);
    renderer.RenderUniformMatrix4fvArray(boneMatricesUniform,
        static_cast<int>(it->second.gpuSkinningShaderData.skinningMatrices.size()), false,
        it->second.gpuSkinningShaderData.skinningMatrices[0].data());
   
    CheckGlError(__FILE__, __LINE__);
    for (const auto& name : it->second.model.meshNamesOrdered) {
        auto pit = it->second.gpuSkinningShaderData.perMesh.find(name);
        if (pit == it->second.gpuSkinningShaderData.perMesh.end()) continue;
        auto tit = meshTextures.find(name);
        if (tit == meshTextures.end() || !tit->second) continue;
        pit->second.RenderVBO(renderer);
    }

    CheckGlError(__FILE__, __LINE__);
    renderer.PopMatrix();
    renderer.shaderManager.PopShader();

    drawAttachedWeapon(renderer);

    CheckGlError(__FILE__, __LINE__);
}

// ==================== Main pass with shadows ====================

void Character::drawWithShadow(Renderer& renderer, const Eigen::Matrix4f& lightFromCamera, GLuint shadowMapTex, const Eigen::Vector3f& lightDirCamera) {
    if (useGpuSkinning) {
        drawGpuSkinningWithShadow(renderer, lightFromCamera, shadowMapTex, lightDirCamera);
    } else {
        drawCpuWithShadow(renderer, lightFromCamera, shadowMapTex, lightDirCamera);
    }
}

void Character::drawCpuWithShadow(Renderer& renderer, const Eigen::Matrix4f& lightFromCamera, GLuint shadowMapTex, const Eigen::Vector3f& lightDirCamera) {
    AnimationState drawState = resolveActiveState();
    auto it = animations.find(drawState);
    if (it == animations.end()) return;

    static const std::string shadowShader = "default_shadow";

    renderer.shaderManager.PushShader(shadowShader);
    renderer.RenderUniform1i(textureUniformName, 0);
    renderer.RenderUniform1i("uShadowMap", 1);
    renderer.RenderUniformMatrix4fv("uLightFromCamera", false, lightFromCamera.data());
    renderer.RenderUniform3fv("uLightDir", lightDirCamera.data());

    glActiveTexture(GL_TEXTURE1);
    glBindTexture(GL_TEXTURE_2D, shadowMapTex);
    glActiveTexture(GL_TEXTURE0);

    renderer.PushPerspectiveProjectionMatrix(1.0 / 1.5,
        static_cast<float>(Environment::width) / static_cast<float>(Environment::height),
        Environment::CONST_Z_NEAR, Environment::CONST_Z_FAR);

    renderer.PushMatrix();
    renderer.TranslateMatrix({ position.x(), position.y(), position.z() });
    renderer.RotateMatrix(Eigen::Quaternionf(Eigen::AngleAxisf(-facingAngle, Eigen::Vector3f::UnitY())).toRotationMatrix());
    renderer.ScaleMatrix(modelScale);
    renderer.RotateMatrix(modelCorrectionRotation.toRotationMatrix());

    auto& anim = it->second;
    for (const auto& name : anim.model.meshNamesOrdered) {
        auto mit = anim.model.meshes.find(name);
        if (mit == anim.model.meshes.end()) continue;
        auto tit = meshTextures.find(name);
        if (tit == meshTextures.end() || !tit->second) continue;
        glBindTexture(GL_TEXTURE_2D, tit->second->getTexID());
        modelMutable.AssignFrom(mit->second.mesh);
        modelMutable.RefreshVBO();
        renderer.DrawVertexRenderStruct(modelMutable);
    }

    renderer.PopMatrix();

    renderer.shaderManager.PushShader(defaultShaderName);
    renderer.RenderUniform1i(textureUniformName, 0);
    drawAttachedWeapon(renderer);
    renderer.shaderManager.PopShader();

    renderer.PopProjectionMatrix();
    renderer.shaderManager.PopShader();
}

void Character::drawGpuSkinningWithShadow(Renderer& renderer, const Eigen::Matrix4f& lightFromCamera, GLuint shadowMapTex, const Eigen::Vector3f& lightDirCamera) {
    AnimationState drawState = resolveActiveState();
    auto it = animations.find(drawState);
    if (it == animations.end()) return;

    CheckGlError(__FILE__, __LINE__);

    if (!prepareGpuSkinning()) return;

    CheckGlError(__FILE__, __LINE__);

    static const std::string skinningShadowShader = "skinning_shadow";
    static const std::string boneMatricesUniform = "uBoneMatrices[0]";

    renderer.shaderManager.PushShader(skinningShadowShader);
    renderer.RenderUniform1i(textureUniformName, 0);
    renderer.RenderUniform1i("uShadowMap", 1);
    renderer.RenderUniformMatrix4fv("uLightFromCamera", false, lightFromCamera.data());
    renderer.RenderUniform3fv("uLightDir", lightDirCamera.data());

    CheckGlError(__FILE__, __LINE__);

    glActiveTexture(GL_TEXTURE1);
    glBindTexture(GL_TEXTURE_2D, shadowMapTex);
    glActiveTexture(GL_TEXTURE0);

    CheckGlError(__FILE__, __LINE__);

    renderer.PushPerspectiveProjectionMatrix(1.0 / 1.5,
        static_cast<float>(Environment::width) / static_cast<float>(Environment::height),
        Environment::CONST_Z_NEAR, Environment::CONST_Z_FAR);

    renderer.PushMatrix();
    renderer.TranslateMatrix({ position.x(), position.y(), position.z() });
    renderer.RotateMatrix(Eigen::Quaternionf(Eigen::AngleAxisf(-facingAngle, Eigen::Vector3f::UnitY())).toRotationMatrix());
    renderer.ScaleMatrix(modelScale);
    renderer.RotateMatrix(modelCorrectionRotation.toRotationMatrix());

    CheckGlError(__FILE__, __LINE__);
    renderer.RenderUniformMatrix4fvArray(boneMatricesUniform,
        static_cast<int>(it->second.gpuSkinningShaderData.skinningMatrices.size()), false,
        it->second.gpuSkinningShaderData.skinningMatrices[0].data());

    CheckGlError(__FILE__, __LINE__);

    for (const auto& name : it->second.model.meshNamesOrdered) {
        auto pit = it->second.gpuSkinningShaderData.perMesh.find(name);
        if (pit == it->second.gpuSkinningShaderData.perMesh.end()) continue;
        auto tit = meshTextures.find(name);
        if (tit == meshTextures.end() || !tit->second) continue;
        glBindTexture(GL_TEXTURE_2D, tit->second->getTexID());
        pit->second.RenderVBO(renderer);
    }

    renderer.PopMatrix();

    renderer.shaderManager.PushShader(defaultShaderName);
    renderer.RenderUniform1i(textureUniformName, 0);
    drawAttachedWeapon(renderer);
    renderer.shaderManager.PopShader();

    CheckGlError(__FILE__, __LINE__);


    renderer.PopProjectionMatrix();
    renderer.shaderManager.PopShader();

    CheckGlError(__FILE__, __LINE__);
}

} // namespace ZL