src/main/java/fr/myny/grid/BuildGrid.java

@@ -1,4 +1,117 @@
 package fr.myny.grid;
 
+import java.util.Arrays;
+import java.util.Objects;
+
 public class BuildGrid {
-}
+
+    private int m_dim_x;
+    private int m_dim_y;
+    private float m_grid[][];
+
+    /*
+     CONSTRUCTOR
+     */
+
+    public BuildGrid(int dim)
+    {
+        System.out.print("Creating a new grid: ");
+
+        m_grid = new float[dim][dim];
+        setDimX(dim);
+        setDimY(dim);
+
+        this.fillWith(0);
+        System.out.println("Done");
+    }
+
+    public BuildGrid( int dim_x, int dim_y)
+    {
+        System.out.print("Creating a new grid: ");
+
+        m_grid = new float[dim_x][dim_y];
+        setDimX(dim_x);
+        setDimY(dim_y);
+
+        this.fillWith(0);
+        System.out.println("Done");
+    }
+
+    /*
+     SETTERS & GETTERS
+     */
+
+    public int getDimX ()
+    {
+        return m_dim_x;
+    }
+
+    public int getDimY ()
+    {
+        return m_dim_y;
+    }
+
+    public void setDimX (int value)
+    {
+        m_dim_x = value;
+    }
+
+    public void setDimY (int value)
+    {
+        m_dim_y = value;
+    }
+
+    /*
+     TRANSFORM THE GRID
+     */
+
+    public void putValue(float value, int posX, int posY)
+    {
+        m_grid[posX][posY] = value;
+    }
+
+    public float getValue(int posX, int posY)
+    {
+        return m_grid[posX][posY];
+    }
+
+    public float[][] getM_grid() {
+        return m_grid;
+    }
+
+    public void displayGrid ()
+    {
+        for (int i = 0; i < getDimX(); i++) {
+            System.out.print("[  ");
+            for (int y = 0; y < getDimY(); y++) {
+                System.out.print(m_grid[i][y]);
+                System.out.print("  ");
+            }
+            System.out.println("]");
+        }
+    }
+
+    public void fillWith ( float value)
+    {
+        for (int i = 0; i < getDimX(); i++) {
+            for (int y = 0; y < getDimY(); y++) {
+                m_grid[i][y] = value;
+            }
+        }
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        BuildGrid buildGrid = (BuildGrid) o;
+        return m_dim_x == buildGrid.m_dim_x && m_dim_y == buildGrid.m_dim_y && Arrays.equals(m_grid, buildGrid.m_grid);
+    }
+
+    @Override
+    public int hashCode() {
+        int result = Objects.hash(m_dim_x, m_dim_y);
+        result = 31 * result + Arrays.hashCode(m_grid);
+        return result;
+    }
+}

src/main/java/test.java

@@ -1,7 +1,9 @@
+import fr.myny.grid.BuildGrid;
+
 public class test{
     public static void main(String[] args){
-        System.out.println("Il n'y a rien a voir !");
+        BuildGrid grid = new BuildGrid(5);
-        System.out.println("nico fait un test");
+        grid.putValue(15.5F, 2,3);
-        System.out.println("Il Je test les branchs");
+        grid.displayGrid();
     }
 }

src/test/java/fr/myny/grid/BuildGridTest.java

@@ -0,0 +1,42 @@
+package fr.myny.grid;
+
+import org.junit.jupiter.api.Test;
+
+import java.util.Arrays;
+
+import static org.junit.jupiter.api.Assertions.*;
+class BuildGridTest {
+
+    @Test
+    void putValue() {
+        BuildGrid grid = new BuildGrid(5);
+        grid.putValue(18.5F, 2, 4);
+        grid.displayGrid();
+    }
+
+    @Test
+    void displayGrid() {
+        BuildGrid grid = new BuildGrid(5);
+
+        assertEquals(5, grid.getDimX());
+        assertEquals(5, grid.getDimY());
+        assertEquals(0.0, grid.getValue(0,0));
+
+        float tabl[][] = new float[5][5];
+
+        for (int i = 0; i < 5; i++) {
+            for (int y = 0; y < 5; y++) {
+                tabl[i][y] = 0;
+            }
+        }
+
+        grid.displayGrid();
+    }
+
+    @Test
+    void fillWith() {
+        BuildGrid grid = new BuildGrid(5);
+        grid.fillWith(5.5F);
+        grid.displayGrid();
+    }
+}