#include "ennemi.h"
#include "mario.h"
#include "box.h"
#include "tile.h"
#include "world.h"
#include "score.h"
#include <base.h>
#include <camera.h>
#include <level.h>
#include <gint/std/string.h>
#include <constants.h>

#include <stdbool.h>

const int ennemi_widths [NOMBRE_ENNEMIS] = {0, 8, 8,  8, 8 , 8, 8};
//const int ennemi_heights[NOMBRE_ENNEMIS] = {0, 8, 12, 9, 12, 9, 8};
const int ennemi_heights[NOMBRE_ENNEMIS] = {0, 8, 8, 8, 8, 8, 8};

void ennemiDisplay(ennemi_t const * e)
{
	if (e->type==NONE) return;
	if (e->b.x<=cameraX(0)-e->b.w || e->b.x>=cameraX(0)+127) return; // do not draw if out of the screen

	{// draw
		int tx=0, ty=0, dsx=0, dsy=0;
		tileset_t t={0,ennemi_widths[e->type], ennemi_heights[e->type],1};
		switch (e->type)
		{
			case GOOMBA_ID:
			{
				extern image_t img_goomba;
				t.sheet=&img_goomba;
				tx = e->life*(1+(time_id/10)%2);
			}
			break;

			case KOOPA_V_ID:
			{
				extern image_t img_koopa_verte;
				t.sheet=&img_koopa_verte;
				t.height=ennemi_heights[KOOPA_V_ID]+ennemi_heights[KOOPA_V_ID]/2;
				tx = (1+e->p1)+(time_id/8)%2;
			}
			break;

			case KOOPA_R_ID:
			{
				extern image_t img_koopa_rouge;
				t.sheet=&img_koopa_rouge;
				t.height=ennemi_heights[KOOPA_R_ID]+ennemi_heights[KOOPA_R_ID]/2;
				tx = (1+e->p1)+(time_id/8)%2;
			}
			break;

			case CARAPACE_VERTE:
			{
				extern image_t img_carapace_verte;
				t.sheet=&img_carapace_verte;
				t.height=ennemi_heights[CARAPACE_VERTE]+ennemi_heights[CARAPACE_VERTE]/8;
			}
			break;

			case CARAPACE_ROUGE:
			{
				extern image_t img_carapace_rouge;
				t.sheet=&img_carapace_rouge;
				t.height=ennemi_heights[CARAPACE_ROUGE]+ennemi_heights[CARAPACE_ROUGE]/8;
			}
			break;

			case PLANTE_ID:
			{
				extern image_t img_plante;
				t.sheet=&img_plante;
				dsx=-4;
			}
		}
		tileDraw(e->b.x-cameraX(0)+dsx, e->b.y-cameraY(mario.p.y)+dsy, &t, tx, ty);
	}
}

static void plante_tour(ennemi_t *e)
{
	if (e->type==PLANTE_ID)
	{
		e->p1++;
		e->p1%=93;
		if (0<=e->p1 && e->p1<35) // (plante en bas, en attente)
		{
			if (abs(mario.p.x-e->b.x)<15) e->p1=0;
		}
		if (35<=e->p1 && e->p1<52)
		{
			if ((e->p1+1)%3==0) e->b.y++;
		}
		if (52<=e->p1 && e->p1<75){} // plante en attente en haut
		if (75<=e->p1 && e->p1<92)
		{
			if (e->p1%3==0) e->b.y--;
		}
	}
}

bool ennemi_check_collision(ennemi_t *e) { return (boxContact(&e->b, &mario.p)); }

void hurtMario()
{
	if (mario.size==M_SMALL && mario_immunity==0)
	{mario_dead=1;finish_level=0;}
	else marioSmaller();
}

void ennemiMove(ennemi_t *e)
{
	if (!(e->b.x<=cameraX(0)-e->b.w || e->b.x>=cameraX(0)+127)) e->discovered=1; // for security, tag as discover all drawed ennemies

	if (e->life==DEAD && e->type!=NONE) // dying animation
	{
		if (e->p1==0)
		{
			e->b.vx=2*sgn(e->b.vx);
			e->b.vy=5;
		}
		e->p1++;
		e->b.vy--;
		e->b.y+=e->b.vy;
		e->b.x+=e->b.vx;
		if (e->p1>=30) e->type=NONE; // died 1.5 sec before
	}

	if (e->b.x<cameraX()+128+30 && e->b.x>cameraX()-30)
	e->discovered=1;
	//if (e->b.x+e->b.w<=worldGetCell_real_x0())
	//	e->type=NONE;
	if (e->discovered==0)
	return;
	if (e->life==DEAD)
	return;
	//	e->type=NONE;
	if (e->type==NONE)
	return;

	bool e_hitMario=ennemi_check_collision(e);
	if (e_hitMario&&mario_starMode)
	{
		e->life=DEAD;
		e->p1=0;
		scoreAdd(KILL_ENNEMI);
		return;
	}

	for (int i=0; i<ennemis_global_size; i++) // physique des carapaces (collisions avec les autres)
	{
		ennemi_t* t=&ennemis_global[i];
		if (t->type!=NONE)
		{
			e->b.x+=sgn(e->b.vx)*(abs(e->b.vx)+(time_id%2))/2;
			const int contact=boxContact(&e->b, &t->b);
			e->b.x-=sgn(e->b.vx)*(abs(e->b.vx)+(time_id%2))/2;
			if (contact && t->life!=DEAD)
			{
				if (e->type!=CARAPACE_VERTE && e->type!=CARAPACE_ROUGE)
				{
					e->b.vx=0;
					e->b.vy=0;
				}
				else
				{
					if (t->type==CARAPACE_VERTE || t->type==CARAPACE_ROUGE)
					{
						e->p1*=-1;
						e->b.vx=6*e->p1;
					}
					else
					{
						t->life=DEAD;
						t->p1=0;
						scoreAdd(KILL_ENNEMI);
					}
				}
			}
		}
	}

	int previous_case=-5;
	for (int j=0; j<e->b.h; j++)
	{
		if ((e->b.x+j)/8!=previous_case)
		{
			previous_case=(e->b.x+j)/8;
			gift_t * c=(gift_t *)worldGetCell(e->b.x+j, e->b.y-1);
			if ((c->type==GIFT || c->type==BRICK) && (c->time_hit_id || c->state) && e->life!=DEAD)
			{
				e->life=e->p1=DEAD;
				scoreAdd(KILL_ENNEMI);
				break;
			}
		}
	}

	if (e->b.y<0) e->type=NONE;

	const bool mario_fatal_hit = (mario.p.last_vy<=-2 || mario.p.vy<=-2);
	switch (e->type) // move
	{
		case KOOPA_R_ID:
		boxMove(&e->b);
		if (e->b.vx)
		{ // demi tour si au dessus du vide
			int s=-1;
			if (e->b.vx>0) s=e->b.w;

			if (worldGetCellCategory(e->b.x+s, e->b.y-1)==CTG_EMPTY && sgn(e->b.vx)==sgn(s)) e->b.vx=(e->p1*=-1);
		}

		// fall through
		case GOOMBA_ID:
		case KOOPA_V_ID:
		if (e->type!=KOOPA_R_ID) boxMove(&e->b);
		if (e->b.vx==0) // demi tour si mur
		{
			if (e->p1==0) e->b.vx=e->p1=-1;
			else e->b.vx=(e->p1*=-1);
		}
		break;

		case CARAPACE_VERTE:
		case CARAPACE_ROUGE:
		boxMove(&e->b);
		if (e->b.vx==0)
		{
			if (e->p1<2)
			{
				e->p1*=-1;
				e->b.vx=6*e->p1;
			}
		}
		if (e->p1>=2)
		{
			if ((e->p1++)==80)
			{ // transformation carapace->koopa
				e->type--;
				e->b.h=ennemi_heights[e->type];
				e->p1=e->b.vx=0;
			}
		}
		break;

		case PLANTE_ID:
		plante_tour(e);
	}

	if (e_hitMario && mario_fatal_hit) switch (e->type) // mario attacks
	{
		case GOOMBA_ID:
		e->life=DEAD;
		e->p1=0;
		scoreAdd(KILL_ENNEMI);
		mario.p.vy=4;
		mario.p.y=e->b.y+ennemi_heights[e->type]+1;
		break;

		case KOOPA_V_ID:
		case KOOPA_R_ID:
		e->type++;
		e->b.h=ennemi_heights[e->type];
		e->p1=2;
		e->b.vx=0;
		scoreAdd(KILL_ENNEMI);
		mario.p.vy=4;
		mario.p.y=e->b.y+ennemi_heights[e->type]+1;
		break;

		case CARAPACE_VERTE:
		case CARAPACE_ROUGE:
		if (e->p1==0 || e->p1>=2)
		{
			if (mario.p.x>=e->b.x) e->p1=-1;
			if (mario.p.x<=e->b.x) e->p1=1;
			e->b.vx=6*e->p1;

			mario.p.vy=4;
			mario.p.y=e->b.y+ennemi_heights[CARAPACE_VERTE];
			boxMove(&e->b);

		}
		else
		{
			e->p1=e->b.vx=0;
			mario.p.vy=4;
			mario.p.y=e->b.y+ennemi_heights[CARAPACE_VERTE]+1;
		}
		break;

	}
	else if (e_hitMario) switch (e->type) // hurt mario
	{
		case GOOMBA_ID:
		case KOOPA_V_ID:
		case KOOPA_R_ID:
		hurtMario();
		break;

		case CARAPACE_VERTE:
		case CARAPACE_ROUGE:
		if (e->p1==0 || e->p1>=2)
		{
			if (mario.p.x>=e->b.x) e->p1=-1;
			else e->p1=1;
			e->b.vx=6*e->p1;
			if (mario_fatal_hit)
			{
				mario.p.vy=4;
				mario.p.y=e->b.y+ennemi_heights[CARAPACE_VERTE];
			}
			else
			{ // mario bounce
				if (mario.p.x>=e->b.x) mario.p.x=e->b.x+e->b.w;
				else mario.p.x=e->b.x-mario.p.w;
			}
		}
		else hurtMario();
		break;
	}
}

// Global variables for ennemies
ennemi_t * ennemis_global=0;
int ennemis_global_size=0;

void ennemiesDisplay()
{
	for (int i=0; i<ennemis_global_size; i++) ennemiDisplay(&ennemis_global[i]);
}


void ennemiesInit(ennemi_t * table, int s)
{
	if (ennemis_global)
	freeProf(ennemis_global);
	ennemis_global_size=ennemis_global=0;
	if (!s) return;
	int size=sizeof(ennemi_t)*s;
	if ((ennemis_global=mallocProf(size))==0) mallocError();
	ennemis_global_size=s;
	memcpy(ennemis_global, table, size);
}