#include <stdint.h>
#include <graphx.h>

#include "instructions.h"
#include "progress.h"
#include "level.h"
#include "draw.h"
#include "main.h"

enum instruction_purpose {
	ABOUT_BASICS,
	ABOUT_TRUCKS_CARGOS,
	ABOUT_BUTTONS,
	ABOUT_DROPPOINTS,
	ABOUT_WHITE_TRUCKS,
	ABOUT_HOVERBOARDS,
};

const char* instructions[INSTRUCTIONS_COUNT] = {
	"Use trucks to deliver cargos to houses of\0the same color.\0To draw a truck's path, hold [2nd] on it and\0use the arrow keys.\0Press [enter] once all the paths are drawn\0to start the deliveries.\0",
	"Trucks can carry up to three cargos\0simultaneously.\0Trucks will unstack a cargo for each\0delivery.\0",
	"Buttons control bridges of the same color.\0\0",
	"Trucks can drop cargos on drop points.\0Press [alpha] on a drop point to enable it.\0",
	"White trucks can deliver cargos to houses\0of any color.\0",
	"Hoverboards can deliver cargos to houses\0of any color.\0Hoverboards can go on the grass.\0\0",
};

void instruction_show(uint8_t index) {
	const char* instruction; for (instruction = instructions[index]; *instruction;) {	
		uint8_t d; level_draw();
		draw_bubble(5,240-29-5,320-10,29);
		for (d = 0; d <= 1; ++d) {
			gfx_PrintStringXY(instruction, 10, 240-29 + d*12);
			while (*instruction++);
		}
		draw_done();
		keys_wait();
	}
}

void instructions_show(void) {
	uint8_t index;

	if (level.count.cargos) --level.count.cargos;
	if (level.level_index == 1) instruction_show(ABOUT_BASICS);
	for (index = 1; index < INSTRUCTIONS_COUNT; ++index) {
		if (!progress.level_instructions[index] && (&level.count.houses)[index])
			progress.level_instructions[index] = level.level_index;
		if (progress.level_instructions[index] == level.level_index)
			instruction_show(index);
	}
}