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#include <gtest/gtest.h>
#include "missiles.h"
using namespace devilution;
TEST(Missiles, GetDirection8)
{
EXPECT_EQ(Direction::South, GetDirection({ 0, 0 }, { 15, 15 }));
EXPECT_EQ(Direction::SouthWest, GetDirection({ 0, 0 }, { 0, 15 }));
EXPECT_EQ(Direction::South, GetDirection({ 0, 0 }, { 8, 15 }));
EXPECT_EQ(Direction::South, GetDirection({ 0, 0 }, { 8, 8 }));
EXPECT_EQ(Direction::South, GetDirection({ 0, 0 }, { 15, 8 }));
EXPECT_EQ(Direction::South, GetDirection({ 0, 0 }, { 15, 7 }));
EXPECT_EQ(Direction::South, GetDirection({ 0, 0 }, { 11, 7 }));
EXPECT_EQ(Direction::South, GetDirection({ 0, 0 }, { 8, 11 }));
EXPECT_EQ(Direction::North, GetDirection({ 15, 15 }, { 0, 0 }));
EXPECT_EQ(Direction::NorthEast, GetDirection({ 0, 15 }, { 0, 0 }));
EXPECT_EQ(Direction::North, GetDirection({ 8, 15 }, { 0, 0 }));
EXPECT_EQ(Direction::North, GetDirection({ 8, 8 }, { 0, 0 }));
EXPECT_EQ(Direction::North, GetDirection({ 15, 8 }, { 0, 0 }));
EXPECT_EQ(Direction::North, GetDirection({ 15, 7 }, { 0, 0 }));
EXPECT_EQ(Direction::North, GetDirection({ 11, 7 }, { 0, 0 }));
EXPECT_EQ(Direction::North, GetDirection({ 8, 11 }, { 0, 0 }));
EXPECT_EQ(Direction::East, GetDirection({ 0, 15 }, { 15, 0 }));
EXPECT_EQ(Direction::SouthEast, GetDirection({ 0, 0 }, { 15, 0 }));
EXPECT_EQ(Direction::East, GetDirection({ 0, 8 }, { 15, 0 }));
EXPECT_EQ(Direction::East, GetDirection({ 0, 8 }, { 8, 0 }));
EXPECT_EQ(Direction::East, GetDirection({ 0, 15 }, { 8, 0 }));
EXPECT_EQ(Direction::East, GetDirection({ 0, 15 }, { 7, 0 }));
EXPECT_EQ(Direction::East, GetDirection({ 0, 11 }, { 7, 0 }));
EXPECT_EQ(Direction::East, GetDirection({ 0, 8 }, { 11, 0 }));
EXPECT_EQ(Direction::South, GetDirection({ 1, 1 }, { 2, 2 }));
EXPECT_EQ(Direction::SouthWest, GetDirection({ 1, 1 }, { 1, 2 }));
EXPECT_EQ(Direction::West, GetDirection({ 1, 1 }, { 0, 2 }));
EXPECT_EQ(Direction::NorthWest, GetDirection({ 1, 1 }, { 0, 1 }));
EXPECT_EQ(Direction::North, GetDirection({ 1, 1 }, { 0, 0 }));
EXPECT_EQ(Direction::NorthEast, GetDirection({ 1, 1 }, { 1, 0 }));
EXPECT_EQ(Direction::East, GetDirection({ 1, 1 }, { 2, 0 }));
EXPECT_EQ(Direction::SouthEast, GetDirection({ 1, 1 }, { 2, 1 }));
EXPECT_EQ(Direction::SouthWest, GetDirection({ 0, 0 }, { 0, 0 })) << "GetDirection is expected to default to Direction::SouthWest when the points occupy the same tile";
}
TEST(Missiles, GetDirection16)
{
EXPECT_EQ(Direction16::South, GetDirection16({ 0, 0 }, { 15, 15 }));
EXPECT_EQ(Direction16::SouthWest, GetDirection16({ 0, 0 }, { 0, 15 }));
EXPECT_EQ(Direction16::South_SouthWest, GetDirection16({ 0, 0 }, { 8, 15 }));
EXPECT_EQ(Direction16::South, GetDirection16({ 0, 0 }, { 8, 8 }));
EXPECT_EQ(Direction16::South_SouthEast, GetDirection16({ 0, 0 }, { 15, 8 }));
EXPECT_EQ(Direction16::South_SouthEast, GetDirection16({ 0, 0 }, { 15, 7 }));
EXPECT_EQ(Direction16::South_SouthEast, GetDirection16({ 0, 0 }, { 11, 7 }));
EXPECT_EQ(Direction16::South, GetDirection16({ 0, 0 }, { 8, 11 }));
EXPECT_EQ(Direction16::North, GetDirection16({ 15, 15 }, { 0, 0 }));
EXPECT_EQ(Direction16::NorthEast, GetDirection16({ 0, 15 }, { 0, 0 }));
EXPECT_EQ(Direction16::North_NorthEast, GetDirection16({ 8, 15 }, { 0, 0 }));
EXPECT_EQ(Direction16::North, GetDirection16({ 8, 8 }, { 0, 0 }));
EXPECT_EQ(Direction16::North_NorthWest, GetDirection16({ 15, 8 }, { 0, 0 }));
EXPECT_EQ(Direction16::North_NorthWest, GetDirection16({ 15, 7 }, { 0, 0 }));
EXPECT_EQ(Direction16::North_NorthWest, GetDirection16({ 11, 7 }, { 0, 0 }));
EXPECT_EQ(Direction16::North, GetDirection16({ 8, 11 }, { 0, 0 }));
EXPECT_EQ(Direction16::East, GetDirection16({ 0, 15 }, { 15, 0 }));
EXPECT_EQ(Direction16::SouthEast, GetDirection16({ 0, 0 }, { 15, 0 }));
EXPECT_EQ(Direction16::East_SouthEast, GetDirection16({ 0, 8 }, { 15, 0 }));
EXPECT_EQ(Direction16::East, GetDirection16({ 0, 8 }, { 8, 0 }));
EXPECT_EQ(Direction16::East_NorthEast, GetDirection16({ 0, 15 }, { 8, 0 }));
EXPECT_EQ(Direction16::East_NorthEast, GetDirection16({ 0, 15 }, { 7, 0 }));
EXPECT_EQ(Direction16::East_NorthEast, GetDirection16({ 0, 11 }, { 7, 0 }));
EXPECT_EQ(Direction16::East, GetDirection16({ 0, 8 }, { 11, 0 }));
EXPECT_EQ(Direction16::South, GetDirection16({ 2, 2 }, { 3, 3 }));
EXPECT_EQ(Direction16::South_SouthWest, GetDirection16({ 2, 2 }, { 3, 4 }));
EXPECT_EQ(Direction16::SouthWest, GetDirection16({ 2, 2 }, { 2, 4 }));
EXPECT_EQ(Direction16::West_SouthWest, GetDirection16({ 2, 2 }, { 1, 4 }));
EXPECT_EQ(Direction16::West, GetDirection16({ 2, 2 }, { 1, 3 }));
EXPECT_EQ(Direction16::West_NorthWest, GetDirection16({ 2, 2 }, { 0, 3 }));
EXPECT_EQ(Direction16::NorthWest, GetDirection16({ 2, 2 }, { 0, 2 }));
EXPECT_EQ(Direction16::North_NorthWest, GetDirection16({ 2, 2 }, { 0, 1 }));
EXPECT_EQ(Direction16::North, GetDirection16({ 2, 2 }, { 1, 1 }));
EXPECT_EQ(Direction16::North_NorthEast, GetDirection16({ 2, 2 }, { 1, 0 }));
EXPECT_EQ(Direction16::NorthEast, GetDirection16({ 2, 2 }, { 2, 0 }));
EXPECT_EQ(Direction16::East_NorthEast, GetDirection16({ 2, 2 }, { 3, 0 }));
EXPECT_EQ(Direction16::East, GetDirection16({ 2, 2 }, { 3, 1 }));
EXPECT_EQ(Direction16::East_SouthEast, GetDirection16({ 2, 2 }, { 4, 1 }));
EXPECT_EQ(Direction16::SouthEast, GetDirection16({ 2, 2 }, { 4, 2 }));
EXPECT_EQ(Direction16::South_SouthEast, GetDirection16({ 2, 2 }, { 4, 3 }));
EXPECT_EQ(Direction16::South_SouthWest, GetDirection16({ 0, 0 }, { 0, 0 })) << "GetDirection16 is expected to default to Direction16::South_SouthWest when the points occupy the same tile";
}