#include "GhastModel.h"

#include <math.h>

#include <memory>

#include "platform/sdl2/Render.h"
#include "java/Random.h"
#include "minecraft/client/model/geom/Model.h"
#include "minecraft/client/model/geom/ModelPart.h"

GhastModel::GhastModel() : Model() {
    int yoffs = -16;
    body = new ModelPart(this, 0, 0);
    body->addBox(-8, -8, -8, 16, 16, 16);
    body->y += (8 + 16) + yoffs;

    Random* random = new Random(1660);
    for (int i = 0; i < TENTACLESLENGTH; i++)  // 4J - 9 was  tentacles.size()
    {
        tentacles[i] = new ModelPart(this, 0, 0);

        float xo = (((i % 3 - (i / 3 % 2) * 0.5f + 0.25f) / 2.0f * 2 - 1) * 5);
        float yo = (((i / 3) / 2.0f * 2 - 1) * 5);
        int len = random->nextInt(7) + 8;
        tentacles[i]->addBox(-1, 0, -1, 2, len, 2);

        tentacles[i]->x = xo;
        tentacles[i]->z = yo;
        tentacles[i]->y = (float)(31 + yoffs);
    }

    // 4J added - compile now to avoid random performance hit first time cubes
    // are rendered
    body->compile(1.0f / 16.0f);
    for (int i = 0; i < TENTACLESLENGTH; i++) {
        tentacles[i]->compile(1.0f / 16.0f);
    }
}

void GhastModel::setupAnim(float time, float r, float bob, float yRot,
                           float xRot, float scale,
                           std::shared_ptr<Entity> entity,
                           unsigned int uiBitmaskOverrideAnim) {
    for (int i = 0; i < TENTACLESLENGTH; i++)  // 4J - 9 was  tentacles.size()
    {
        tentacles[i]->xRot = 0.2f * sinf(bob * 0.3f + i) + 0.4f;
    }
}

void GhastModel::render(std::shared_ptr<Entity> entity, float time, float r,
                        float bob, float yRot, float xRot, float scale,
                        bool usecompiled) {
    setupAnim(time, r, bob, yRot, xRot, scale, entity);

    glPushMatrix();
    glTranslatef(0, .6f, 0);

    body->render(scale, usecompiled);
    for (int i = 0; i < TENTACLESLENGTH; i++)  // 4J - 9 was  tentacles.size()
    {
        tentacles[i]->render(scale, usecompiled);
    }

    glPopMatrix();
}