#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <time.h>


#define TICK_RATE			60		// 60 times per second


uint32_t floatTest(uint32_t machine, uint32_t fuel);
uint32_t intTest(uint32_t machine, uint32_t fuel);
uint32_t int2Test(uint32_t machine, uint32_t fuel);


int main(){
	uint32_t machine, fuel;
	uint32_t floatRet, intRet, int2Ret;
	srand(time(NULL));

	for(uint32_t i = 0; i < 500000; i++){
		machine = rand() * 1000;	// Always multiples of 1kW
		fuel = rand() * 1000;		// Always multiples of 1kJ

		floatRet = floatTest(machine, fuel);
		intRet = intTest(machine, fuel);
		int2Ret = int2Test(machine, fuel);

		if((floatRet != intRet) || (floatRet != int2Ret) || (intRet != int2Ret)){
			printf("#%u float/int/int2 ticks: %u/%u/%u; machine/fuel: %ukW, %ukJ\n", i, floatRet, intRet, int2Ret, machine / 1000, fuel / 1000);
		}
	}

	return 0;
}


uint32_t floatTest(uint32_t machine, uint32_t fuel){
	uint32_t ticks = 0;
	float fuelLeft = fuel;
	float consumptionPerTick = ((float)machine) / ((float)TICK_RATE);

	// Simulate ticks of a machine until the fuel runs out
	while(fuelLeft > 0){
		ticks++;
		fuelLeft -= consumptionPerTick;
	}

	return ticks;
}

uint32_t intTest(uint32_t machine, uint32_t fuel){
	uint32_t ticks = 0;
	uint32_t ticksLeft = ceil(((float)fuel) / (((float)machine) / ((float)TICK_RATE)));
	// uint32_t ticksLeft = ceil((((float)fuel) / ((float)machine)) * ((float)TICK_RATE));

	// Simulate ticks of a machine until the fuel runs out
	while(ticksLeft){
		ticks++;
		ticksLeft--;
	}

	return ticks;
}

uint32_t int2Test(uint32_t machine, uint32_t fuel){
	uint32_t ticks = 0;
	int64_t fuelLeft = fuel * TICK_RATE;
	uint64_t consumptionPerTick = machine;

	// Simulate ticks of a machine until the fuel runs out
	while(fuelLeft > 0){
		ticks++;
		fuelLeft -= consumptionPerTick;
	}
	return ticks;
}