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#include "calendar.h"
#include "cata_utility.h"
#include "cata_catch.h"
#include "enums.h"
#include "flag.h"
#include "game_constants.h"
#include "item.h"
#include "map.h"
#include "point.h"
#include "weather.h"
static void set_map_temperature( units::temperature new_temperature )
{
get_weather().temperature = new_temperature;
get_weather().clear_temp_cache();
}
TEST_CASE( "Item_spawns_with_right_thermal_attributes", "[temperature]" )
{
item D( "meat_cooked" );
CHECK( D.get_specific_heat_liquid() == 3.7f );
CHECK( D.get_specific_heat_solid() == 2.15f );
CHECK( D.get_latent_heat() == 260 );
CHECK( units::to_kelvin( D.temperature ) == 0 );
CHECK( units::to_joule_per_gram( D.specific_energy ) == -10 );
set_map_temperature( units::from_fahrenheit( 122 ) );
D.process_temperature_rot( 1, tripoint_zero, get_map(), nullptr );
CHECK( units::to_kelvin( D.temperature ) == Approx( 323.15 ) );
}
TEST_CASE( "Rate_of_temperature_change", "[temperature]" )
{
// Fahrenheits and kelvins get used and converted around
// So there are small rounding errors everywhere. Use margins.
// The calculations are done once every 10 minutes.
// Don't bother with times shorter than that.
// Note: If process interval is longer than 1 hour the calculations will be done using the environment temperature
// IMPORTANT: Processing intervals should be kept below 1 hour to avoid this.
// Sections:
// Water bottle (realisticity check)
// Cool down test
// heat up test
map &here = get_map();
SECTION( "Water bottle test (ralisticity)" ) {
// Water at 55 C
// Environment at 20 C
// 75 minutes
// Water 1 and 2 processed at slightly different intervals
// Temperature after should be approx 30 C for realistic values
// Lower than 30 C means faster temperature changes
// Based on the water bottle cooling measurements on this paper
// https://www.researchgate.net/publication/282841499_Study_on_heat_transfer_coefficients_during_cooling_of_PET_bottles_for_food_beverages
// Checked with incremental updates and whole time at once
item water1( "water" );
item water2( "water" );
set_map_temperature( units::from_fahrenheit( 131 ) ); // 55 C
water1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
water2.process_temperature_rot( 1, tripoint_zero, here, nullptr );
// 55 C
CHECK( units::to_kelvin( water1.temperature ) == Approx( 328.15 ) );
set_map_temperature( units::from_fahrenheit( 68 ) ); // 20C
calendar::turn += 11_minutes;
water1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
calendar::turn += 20_minutes;
water1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
calendar::turn += 29_minutes;
water1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
water2.process_temperature_rot( 1, tripoint_zero, here, nullptr );
calendar::turn += 15_minutes;
water1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
water2.process_temperature_rot( 1, tripoint_zero, here, nullptr );
// about 29.6 C
CHECK( units::to_kelvin( water1.temperature ) == Approx( 302.71802 ) );
CHECK( units::to_kelvin( water1.temperature ) == Approx( units::to_kelvin( water2.temperature ) ) );
}
SECTION( "Hot liquid to frozen" ) {
// 2x cooked meat (50 C) cooling in -20 C environment for several hours
// 1) Both at 50C and hot
// 2) Wait a short time then Meat 1 at about 34.6 C and not hot
// 3) Wait an hour at different intervals then Meat 1 and 2 at 0 C not frozen
// 4) Wait two hours then Meat 1 and 2 at 0 C frozen
// 5) Wait a bit over hour then Meat 1 and 2 at about -5.2 C
item meat1( "meat_cooked" );
item meat2( "meat_cooked" );
set_map_temperature( units::from_fahrenheit( 122 ) ); //50 C
meat1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
meat2.process_temperature_rot( 1, tripoint_zero, here, nullptr );
// 50 C
CHECK( units::to_kelvin( meat1.temperature ) == Approx( 323.15 ) );
CHECK( meat1.has_own_flag( flag_HOT ) );
set_map_temperature( units::from_fahrenheit( -4 ) ); // -20 C
calendar::turn += 15_minutes;
meat1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
meat2.process_temperature_rot( 1, tripoint_zero, here, nullptr );
// about 34.6 C
CHECK( units::to_kelvin( meat1.temperature ) == Approx( 307.78338 ) );
CHECK( !meat1.has_own_flag( flag_HOT ) );
calendar::turn += 11_minutes;
meat1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
calendar::turn += 11_minutes;
meat1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
calendar::turn += 30_minutes;
meat1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
meat2.process_temperature_rot( 1, tripoint_zero, here, nullptr );
calendar::turn += 11_minutes;
meat1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
meat2.process_temperature_rot( 1, tripoint_zero, here, nullptr );
// 0C
// not frozen
CHECK( units::to_kelvin( meat1.temperature ) == Approx( 273.15 ) );
CHECK( units::to_kelvin( meat2.temperature ) == Approx( 273.15 ) );
CHECK( !meat1.has_own_flag( flag_FROZEN ) );
CHECK( !meat2.has_own_flag( flag_FROZEN ) );
calendar::turn += 60_minutes;
meat1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
meat2.process_temperature_rot( 1, tripoint_zero, here, nullptr );
calendar::turn += 60_minutes;
meat1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
meat2.process_temperature_rot( 1, tripoint_zero, here, nullptr );
// 0C
// frozen
// same energy as meat 2
CHECK( units::to_kelvin( meat1.temperature ) == Approx( 273.15 ) );;
CHECK( meat1.has_own_flag( flag_FROZEN ) );
CHECK( meat2.has_own_flag( flag_FROZEN ) );
CHECK( units::to_joule_per_gram( meat1.specific_energy ) == Approx( units::to_joule_per_gram(
meat2.specific_energy ) ) );
calendar::turn += 11_minutes;
meat1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
calendar::turn += 20_minutes;
meat1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
calendar::turn += 20_minutes;
meat1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
meat2.process_temperature_rot( 1, tripoint_zero, here, nullptr );
calendar::turn += 50_minutes;
meat1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
meat2.process_temperature_rot( 1, tripoint_zero, here, nullptr );
// about -5.2 C
// frozen
// same temp as meat 2
CHECK( units::to_kelvin( meat1.temperature ) == Approx( 267.98050 ) );
CHECK( meat1.has_own_flag( flag_FROZEN ) );
CHECK( units::to_kelvin( meat1.temperature ) == Approx( units::to_kelvin( meat2.temperature ) ) );
}
SECTION( "Cold solid to liquid" ) {
// 2x cooked meat (-20 C) warming in 20 C environment
// Start: both at -20 C and frozen
// 11 min: meat 1 at about -9.3 C
// Process 32 min in different steps
// Both meats frozen at 0 C
// Process 90 min
// Both meats not frozen at 9 C
// Process 100 min in different steps
// Both meats at about 2.2 C
item meat1( "meat_cooked" );
item meat2( "meat_cooked" );
set_map_temperature( units::from_fahrenheit( -4 ) ); // -20 C
meat1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
meat2.process_temperature_rot( 1, tripoint_zero, here, nullptr );
// -20 C
CHECK( units::to_kelvin( meat1.temperature ) == Approx( 253.15 ) );
CHECK( meat1.has_own_flag( flag_FROZEN ) );
set_map_temperature( units::from_fahrenheit( 68 ) ); // 20 C
calendar::turn += 11_minutes;
meat1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
// about -9.3 C
CHECK( units::to_kelvin( meat1.temperature ) == Approx( 263.89390 ) );
calendar::turn += 11_minutes;
meat1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
calendar::turn += 11_minutes;
meat1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
calendar::turn += 20_minutes;
meat1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
meat2.process_temperature_rot( 1, tripoint_zero, here, nullptr );
// 0C
// same temp
// frozen
CHECK( units::to_kelvin( meat1.temperature ) == Approx( 273.15 ) );
CHECK( units::to_kelvin( meat2.temperature ) == units::to_kelvin( meat1.temperature ) );
CHECK( meat1.has_own_flag( flag_FROZEN ) );
CHECK( meat2.has_own_flag( flag_FROZEN ) );
calendar::turn += 45_minutes;
meat1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
meat2.process_temperature_rot( 1, tripoint_zero, here, nullptr );
calendar::turn += 45_minutes;
meat1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
meat2.process_temperature_rot( 1, tripoint_zero, here, nullptr );
// 0C
// same temp
// not frozen
CHECK( units::to_kelvin( meat1.temperature ) == Approx( 273.15 ) );
CHECK( units::to_kelvin( meat2.temperature ) == units::to_kelvin( meat1.temperature ) );
CHECK( !meat1.has_own_flag( flag_FROZEN ) );
calendar::turn += 11_minutes;
meat1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
calendar::turn += 20_minutes;
meat1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
calendar::turn += 20_minutes;
meat1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
meat2.process_temperature_rot( 1, tripoint_zero, here, nullptr );
calendar::turn += 50_minutes;
meat1.process_temperature_rot( 1, tripoint_zero, here, nullptr );
meat2.process_temperature_rot( 1, tripoint_zero, here, nullptr );
// about 2.2 C
CHECK( units::to_kelvin( meat1.temperature ) == Approx( 275.32468 ) );
CHECK( units::to_kelvin( meat1.temperature ) == Approx( units::to_kelvin( meat2.temperature ) ) );
}
}
TEST_CASE( "Temperature_controlled_location", "[temperature]" )
{
SECTION( "Heater test" ) {
// Spawn water
// Process immediately in heater. Sets temperature to temperatures::normal.
// Process water 15 min later. Should still be temperatures::normal.
// Process water 2h 3m later. Should still be temperatures::normal.
item water1( "water" );
set_map_temperature( units::from_fahrenheit( 0 ) ); // -17 C
map &here = get_map();
water1.process_temperature_rot( 1, tripoint_zero, here, nullptr,
temperature_flag::HEATER );
CHECK( units::to_kelvin( water1.temperature ) == Approx( units::to_kelvin(
temperatures::normal ) ) );
calendar::turn += 15_minutes;
water1.process_temperature_rot( 1, tripoint_zero, here, nullptr,
temperature_flag::HEATER );
CHECK( units::to_kelvin( water1.temperature ) == Approx( units::to_kelvin(
temperatures::normal ) ) );
calendar::turn += 2_hours + 3_minutes;
water1.process_temperature_rot( 1, tripoint_zero, here, nullptr,
temperature_flag::HEATER );
CHECK( units::to_kelvin( water1.temperature ) == Approx( units::to_kelvin(
temperatures::normal ) ) );
}
}
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