#include "background.h"

#include <graphx.h>
#include <tice.h>

#include "astronomy.h"
#include "colors.h"
#include "gfx/gfx.h"

#define GROUND_LEVEL (LCD_HEIGHT * 5 / 6)

#define WINDOW_SIZE 50
#define WINDOW_X (LCD_WIDTH - WINDOW_SIZE - 20)
#define WINDOW_Y 20

#define NUM_STARS 19

uint8_t star_x[NUM_STARS];
uint8_t star_y[NUM_STARS];

void gen_stars(void) {
	for(uint8_t i = 0; i < NUM_STARS; i++) {
		star_x[i] = randInt(1, WINDOW_SIZE - 2);
		star_y[i] = randInt(1, WINDOW_SIZE - 2);
	}
}

void draw_background(time_t time, bool lamp_on) {
	gfx_SetColor(WALL_COLOR);
	gfx_FillRectangle_NoClip(0, 0, LCD_WIDTH, GROUND_LEVEL);
	gfx_SetColor(FLOOR_COLOR);
	gfx_FillRectangle_NoClip(0, GROUND_LEVEL, LCD_WIDTH, LCD_HEIGHT - GROUND_LEVEL);

	if(lamp_on) {
		gfx_SetColor(LAMP_COLOR);
		gfx_FillTriangle_NoClip(LCD_WIDTH / 2, LCD_HEIGHT / 3, LCD_WIDTH / 3, GROUND_LEVEL, LCD_WIDTH * 2/3, GROUND_LEVEL);
		// todo: maybe use a parallelogram here to show the light on the ground?
	} else {
		gfx_SetColor(BLACK);
		gfx_FillCircle_NoClip(LCD_WIDTH / 2, LCD_HEIGHT / 3, 3);
	}
	gfx_SetColor(BLACK);
	gfx_FillRectangle_NoClip(LCD_WIDTH / 2 - 10, LCD_HEIGHT / 3 - 4, 20, 4);
	gfx_VertLine(LCD_WIDTH / 2, 0, LCD_HEIGHT / 3 - 4);

	// Window
	gfx_palette[SKY_COLOR] = get_sky_color(time);
	gfx_SetColor(FLOOR_COLOR);
	gfx_FillRectangle_NoClip(WINDOW_X - 3, WINDOW_Y - 3, WINDOW_SIZE + 6, WINDOW_SIZE + 6);
	gfx_SetColor(SKY_COLOR);
	gfx_FillRectangle_NoClip(WINDOW_X, WINDOW_Y, WINDOW_SIZE, WINDOW_SIZE);
	gfx_SetColor(FLOOR_COLOR);
	gfx_HorizLine(WINDOW_X, WINDOW_Y + WINDOW_SIZE / 2, WINDOW_SIZE);
	gfx_VertLine(WINDOW_X + WINDOW_SIZE / 2, WINDOW_Y, WINDOW_SIZE);

	// Stars
	if(last_solar_time(NIGHT_END, time) < last_solar_time(NIGHT_START, time)) {

		gfx_SetColor(WHITE);

		for(uint8_t i = 0; i < NUM_STARS; i++) {
			gfx_SetPixel(WINDOW_X + star_x[i], WINDOW_Y + star_y[i]);
		}
	}

	gfx_TransparentSprite(chicken, 15, GROUND_LEVEL - chicken_height + 6);
	gfx_TransparentSprite(nest, 13, GROUND_LEVEL - 2);
}