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50
51#include "tetrixpiece.h"
52
53#include <QtCore>
54
55//! [0]
56void TetrixPiece::setRandomShape()
57{
58 setShape(TetrixShape(QRandomGenerator::global()->bounded(highest: 7) + 1));
59}
60//! [0]
61
62//! [1]
63void TetrixPiece::setShape(TetrixShape shape)
64{
65 static constexpr int coordsTable[8][4][2] = {
66 { { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 } },
67 { { 0, -1 }, { 0, 0 }, { -1, 0 }, { -1, 1 } },
68 { { 0, -1 }, { 0, 0 }, { 1, 0 }, { 1, 1 } },
69 { { 0, -1 }, { 0, 0 }, { 0, 1 }, { 0, 2 } },
70 { { -1, 0 }, { 0, 0 }, { 1, 0 }, { 0, 1 } },
71 { { 0, 0 }, { 1, 0 }, { 0, 1 }, { 1, 1 } },
72 { { -1, -1 }, { 0, -1 }, { 0, 0 }, { 0, 1 } },
73 { { 1, -1 }, { 0, -1 }, { 0, 0 }, { 0, 1 } }
74 };
75
76 for (int i = 0; i < 4 ; i++) {
77 for (int j = 0; j < 2; ++j)
78 coords[i][j] = coordsTable[shape][i][j];
79 }
80 pieceShape = shape;
81//! [1] //! [2]
82}
83//! [2]
84
85//! [3]
86int TetrixPiece::minX() const
87{
88 int min = coords[0][0];
89 for (int i = 1; i < 4; ++i)
90 min = qMin(a: min, b: coords[i][0]);
91 return min;
92}
93
94int TetrixPiece::maxX() const
95//! [3] //! [4]
96{
97 int max = coords[0][0];
98 for (int i = 1; i < 4; ++i)
99 max = qMax(a: max, b: coords[i][0]);
100 return max;
101}
102//! [4]
103
104//! [5]
105int TetrixPiece::minY() const
106{
107 int min = coords[0][1];
108 for (int i = 1; i < 4; ++i)
109 min = qMin(a: min, b: coords[i][1]);
110 return min;
111}
112
113int TetrixPiece::maxY() const
114//! [5] //! [6]
115{
116 int max = coords[0][1];
117 for (int i = 1; i < 4; ++i)
118 max = qMax(a: max, b: coords[i][1]);
119 return max;
120}
121//! [6]
122
123//! [7]
124TetrixPiece TetrixPiece::rotatedLeft() const
125{
126 if (pieceShape == SquareShape)
127 return *this;
128
129 TetrixPiece result;
130 result.pieceShape = pieceShape;
131 for (int i = 0; i < 4; ++i) {
132 result.setX(index: i, x: y(index: i));
133 result.setY(index: i, y: -x(index: i));
134 }
135//! [7]
136 return result;
137}
138
139//! [9]
140TetrixPiece TetrixPiece::rotatedRight() const
141{
142 if (pieceShape == SquareShape)
143 return *this;
144
145 TetrixPiece result;
146 result.pieceShape = pieceShape;
147 for (int i = 0; i < 4; ++i) {
148 result.setX(index: i, x: -y(index: i));
149 result.setY(index: i, y: x(index: i));
150 }
151//! [9]
152 return result;
153}
154

source code of qtbase/examples/widgets/widgets/tetrix/tetrixpiece.cpp