#include "stdafx.h"
#include "MobRenderer.h"
#include "LivingEntityRenderer.h"
#include "MultiPlayerLocalPlayer.h"
#include "..\Minecraft.World\net.minecraft.world.entity.h"
#include "..\Minecraft.World\net.minecraft.world.entity.player.h"
#include "..\Minecraft.World\net.minecraft.world.entity.projectile.h"
#include "..\Minecraft.World\StringHelpers.h"
#include "..\Minecraft.World\Mth.h"
#include "entityRenderDispatcher.h"

MobRenderer::MobRenderer(Model *model, float shadow) : LivingEntityRenderer(model, shadow)
{
}

void MobRenderer::render(shared_ptr<Entity> _mob, double x, double y, double z, float rot, float a)
{
	shared_ptr<Mob> mob = dynamic_pointer_cast<Mob>(_mob);

	LivingEntityRenderer::render(mob, x, y, z, rot, a);
	renderLeash(mob, x, y, z, rot, a);
}

bool MobRenderer::shouldShowName(shared_ptr<LivingEntity> mob)
{
    return LivingEntityRenderer::shouldShowName(mob) && (mob->shouldShowName() || dynamic_pointer_cast<Mob>(mob)->hasCustomName() && mob == entityRenderDispatcher->crosshairPickMob);
}

void MobRenderer::renderLeash(shared_ptr<Mob> entity, double x, double y, double z, float rot, float a)
{
    shared_ptr<Entity> roper = entity->getLeashHolder();
    // roper = entityRenderDispatcher.cameraEntity;
    if (roper != NULL)
	{
		glColor4f(1.0f, 1.0f, 1.0f, 1.0f);

        y -= (1.6 - entity->bbHeight) * .5;
        Tesselator *tessellator = Tesselator::getInstance();
        double roperYRot = lerp(roper->yRotO, roper->yRot, a * .5f) * Mth::RAD_TO_GRAD;
        double roperXRot = lerp(roper->xRotO, roper->xRot, a * .5f) * Mth::RAD_TO_GRAD;
        double rotOffCos = cos(roperYRot);
        double rotOffSin = sin(roperYRot);
        double yOff = sin(roperXRot);
        if (roper->instanceof(eTYPE_HANGING_ENTITY))
		{
            rotOffCos = 0;
            rotOffSin = 0;
            yOff = -1;
        }
        double swingOff = cos(roperXRot);
        double endX = lerp(roper->xo, roper->x, a) - (rotOffCos * 0.7) - (rotOffSin * 0.5 * swingOff);
        double endY = lerp(roper->yo + roper->getHeadHeight() * .7, roper->y + roper->getHeadHeight() * .7, a) - (yOff * 0.5) - .25;
        double endZ = lerp(roper->zo, roper->z, a) - (rotOffSin * 0.7) + (rotOffCos * 0.5 * swingOff);

        double entityYRot = lerp(entity->yBodyRotO, entity->yBodyRot, a) * Mth::RAD_TO_GRAD + PI * .5;
        rotOffCos = cos(entityYRot) * entity->bbWidth * .4;
        rotOffSin = sin(entityYRot) * entity->bbWidth * .4;
        double startX = lerp(entity->xo, entity->x, a) + rotOffCos;
        double startY = lerp(entity->yo, entity->y, a);
        double startZ = lerp(entity->zo, entity->z, a) + rotOffSin;
        x += rotOffCos;
        z += rotOffSin;

        double dx = (float) (endX - startX);
        double dy = (float) (endY - startY);
        double dz = (float) (endZ - startZ);

        glDisable(GL_TEXTURE_2D);
        glDisable(GL_LIGHTING);
		glDisable(GL_CULL_FACE);

		unsigned int lightCol = Minecraft::GetInstance()->getColourTable()->getColor( eMinecraftColour_Leash_Light_Colour );
		float rLightCol = ( (lightCol>>16)&0xFF )/255.0f;
		float gLightCol = ( (lightCol>>8)&0xFF )/255.0;
		float bLightCol = ( lightCol&0xFF )/255.0;
		
		unsigned int darkCol = Minecraft::GetInstance()->getColourTable()->getColor( eMinecraftColour_Leash_Dark_Colour );
		float rDarkCol = ( (darkCol>>16)&0xFF )/255.0f;
		float gDarkCol = ( (darkCol>>8)&0xFF )/255.0;
		float bDarkCol = ( darkCol&0xFF )/255.0;

        int steps = 24;
        double width = .025;
        tessellator->begin(GL_TRIANGLE_STRIP);
        for (int k = 0; k <= steps; k++)
		{
            if (k % 2 == 0)
			{
                tessellator->color(rLightCol, gLightCol, bLightCol, 1.0F);
            }
			else
			{
                tessellator->color(rDarkCol, gDarkCol, bDarkCol, 1.0F);
            }
            float aa = (float) k / (float) steps;
            tessellator->vertex(x + (dx * aa) + 0, y + (dy * ((aa * aa) + aa) * 0.5) + ((((float) steps - (float) k) / (steps * 0.75F)) + 0.125F), z + (dz * aa));
            tessellator->vertex(x + (dx * aa) + width, y + (dy * ((aa * aa) + aa) * 0.5) + ((((float) steps - (float) k) / (steps * 0.75F)) + 0.125F) + width, z + (dz * aa));
        }
        tessellator->end();

        tessellator->begin(GL_TRIANGLE_STRIP);
        for (int k = 0; k <= steps; k++)
		{
            if (k % 2 == 0)
			{
                tessellator->color(rLightCol, gLightCol, bLightCol, 1.0F);
            }
			else
			{
                tessellator->color(rDarkCol, gDarkCol, bDarkCol, 1.0F);
            }
            float aa = (float) k / (float) steps;
            tessellator->vertex(x + (dx * aa) + 0, y + (dy * ((aa * aa) + aa) * 0.5) + ((((float) steps - (float) k) / (steps * 0.75F)) + 0.125F) + width, z + (dz * aa));
            tessellator->vertex(x + (dx * aa) + width, y + (dy * ((aa * aa) + aa) * 0.5) + ((((float) steps - (float) k) / (steps * 0.75F)) + 0.125F), z + (dz * aa) + width);
        }
        tessellator->end();

        glEnable(GL_LIGHTING);
        glEnable(GL_TEXTURE_2D);
        glEnable(GL_CULL_FACE);
    }
}

double MobRenderer::lerp(double prev, double next, double a)
{
    return prev + (next - prev) * a;
}