#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <tice.h>

#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <graphx.h>
#include <keypadc.h>
#include <fileioc.h>

#include "gfx/sprites.h"


typedef struct {
    int x;
    int y;
    int xdir;
	int ydir;
} bullet_t;
static bullet_t bullet[20];

typedef struct {
	int x;
	int y;
	int xdir;
	int ydir;
	int vel;
	int bvel;
	bool detected;
	int health;
    bullet_t laser[1];
} robot_t;
static robot_t robots[10];


void UpdateRobots(int *numrobots, int x, int y) {
	int i;
	for(i = 0; i < *numrobots ; i ++) {
		if (robots[i].xdir == 1) {
			gfx_TransparentSprite_NoClip(robotR,robots[i].x,robots[i].y);
		} else {
			gfx_TransparentSprite_NoClip(robotL,robots[i].x,robots[i].y);
		}

		if (abs(x-robots[i].x) > abs(y-robots[i].y)) {
			if (x > robots[i].x) {
				robots[i].x ++;
				robots[i].xdir = 1;
			} else {
				robots[i].x --;
				robots[i].xdir = -1;
			}
		}

		if (abs(y-robots[i].y) >= abs(x-robots[i].x)) {
			if (y > robots[i].y) {
				robots[i].y ++;
			} else {
				robots[i].y --;
			}
		}

	}
}

void UpdateBullets(int *numbullets, int *numrobots, int bvel) {
	int i, j;
	for(i = 0; i < *numbullets ; i ++) {
		gfx_TransparentSprite_NoClip(ball_bullet,bullet[i].x,bullet[i].y);
		for(j = 0; j < *numrobots; j ++) {
			if (gfx_CheckRectangleHotspot(bullet[i].x, bullet[i].y, ball_bullet_width, ball_bullet_height, robots[j].x, robots[j].y, robotL_width, robotL_height)){

			}
		}

		if (bullet[i].x + bullet[i].xdir * bvel > 0 && bullet[i].x + bullet[i].xdir * bvel < 320-8 &&
            bullet[i].y + bullet[i].ydir * bvel > 0 && bullet[i].y + bullet[i].ydir * bvel < 240-8) {

			bullet[i].x += bullet[i].xdir * bvel;
			bullet[i].y += bullet[i].ydir * bvel;

		} else {

			bullet[i].x = bullet[*numbullets-1].x;
			bullet[i].y = bullet[*numbullets-1].y;
			bullet[i].xdir = bullet[*numbullets-1].xdir;
			bullet[i].ydir = bullet[*numbullets-1].ydir;
			*numbullets -= 1;
		}
    }
}




void main(void) {

	float x=152, y=112;

	int numbullets=0, bulletcap = 20, bulletDamage = 50;
	int loadtimer=0, loadtime=5;
	int gunxdir = 1, gunydir = 0;
	int robotspawntimer = 0, robotspawntime = 50;
	int numrobots = 0;
	int vel = 2, bvel = 4;
	int pause, dirs;
	int xspawn, yspawn;

	bool quit = false;
	gfx_sprite_t *Character = redseed;
	gfx_sprite_t RobotL;

	srand(rtc_Time());
    gfx_Begin();


	gfx_SetPalette(sprites_pal, sizeof_sprites_pal, 0);
    gfx_FillScreen(0);
	while (quit == false) {

		loadtimer ++;
		robotspawntimer ++;
		dirs = 0;

		gfx_ZeroScreen();
		gfx_SetDrawBuffer();

		//character sprite
		gfx_TransparentSprite_NoClip(Character, x, y);


		//update robot and bullet positions
		UpdateRobots(&numrobots, x, y);
		UpdateBullets(&numbullets, &numrobots, bvel);

		//spawn robots
		if (robotspawntimer == robotspawntime && numrobots < 10) {
			robotspawntimer = 0;
			xspawn = randInt(0,320-32);
			yspawn = randInt(0,240-32);
			if (abs(x - xspawn) > 40 && abs(y - yspawn) > 40) {
				robots[numrobots].x = xspawn;
				robots[numrobots].y = yspawn;
				robots[numrobots].xdir = 0;
				robots[numrobots].ydir = 0;
				robots[numrobots].vel = 1;
				robots[numrobots].bvel = 1;
				robots[numrobots].health = 100;
				numrobots ++;
			}
		}

		kb_Scan();
		if (kb_Data[1] & kb_2nd && numbullets<bulletcap && loadtimer > loadtime) {
				loadtimer = 0;
				bullet[numbullets].x = x + 8;
				bullet[numbullets].y = y + 8;
				bullet[numbullets].xdir = gunxdir;
				bullet[numbullets].ydir = gunydir;
				numbullets++;
		}

		gfx_SwapDraw();

		if (kb_Data[6] & kb_Clear)
			quit = true;
		if (kb_Data[7] & kb_Left && x>0+2*vel) {
			x-=vel;
			if (!(kb_Data[2] & kb_Alpha))
				gunxdir = -1;
			dirs++;
		}

		if (kb_Data[7] & kb_Right && x<320-32-2*vel) {
			x+=vel;
			if (!(kb_Data[2] & kb_Alpha))
				gunxdir = 1;
			dirs++;
		}

		if (kb_Data[7] & kb_Up && y>0+2*vel) {
			y-=vel;
			if (!(kb_Data[2] & kb_Alpha))
				gunydir = -1;
			dirs++;
		}

		if (kb_Data[7] & kb_Down && y<240-32-2*vel) {
			y+=vel;
			if (!(kb_Data[2] & kb_Alpha))
				gunydir = 1;
			dirs++;
		}
		if (!(kb_Data[2] & kb_Alpha)) {
			if ((dirs==1) && ((kb_Data[7] & kb_Left) || (kb_Data[7] & kb_Right)))
				gunydir = 0;
			if ((dirs==1) && ((kb_Data[7] & kb_Up) || (kb_Data[7] & kb_Down)))
				gunxdir = 0;
		}
	}
	gfx_End();
}