Diff: GameObjects/Snake/Snake-test.h

Revision:

68:b9cfd27987ac

Child:

69:55e309da7efd

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/GameObjects/Snake/Snake-test.h	Sat May 04 16:56:04 2019 +0000
@@ -0,0 +1,55 @@
+#ifndef SNAKE_TEST_H
+#define SNAKE_TEST_H
+
+/**
+ * \brief Check that Snake object goes to correct position when moved
+ *
+ * \returns true if all the tests passed
+ */
+bool Snake_test_movement()
+{
+    // Create Snake object with a length of 15, and x axis speed of 2.
+    Snake snake;
+    snake.init(15, 2);
+    
+    // Set the position to WIDTH/2, HEIGHT - 3
+
+    Vector2D initial_pos = {WIDTH/2, HEIGHT - 3};  //Spawns player sprite near the middle of the screen.
+    snake.set_pos(initial_pos);
+
+    // Read the position
+    Vector2D read_pos_1 = snake.get_pos();
+    printf("%f, %f\n", read_pos_1.x, read_pos_1.y);
+
+    // Set the direction to W and set snake motion free by setting b as 1;
+    Direction d = W;
+
+    int b[15];  //each element in this array represents the beed number in the snake.
+    for(int i=0; i<=13; i++)  {
+        b[i] = 1;
+    }
+    b[14] = 1;
+
+    // Update the snake position
+    snake.update(d, b);
+
+    // Read the position
+    Vector2D read_pos_2 = snake.get_pos();
+    printf("%f, %f\n", read_pos_2.x, read_pos_2.y);
+
+    // Now check that both the positions are as expected
+    bool success_flag = true;
+
+    // Fail the test if the initial position is wrong
+    if (read_pos_1.x != WIDTH/2 || read_pos_1.y != 18) { //18 because I'm testing the position of the last snake beed.
+        success_flag = false;
+    }
+
+    // Fail the test if the final position is wrong
+    if (read_pos_2.x != ((WIDTH/2)-2) || read_pos_2.y != 18) { //18 because I'm testing the position of the last snake beed and ((WIDTH/2)-2) because speed is set to 2.
+        success_flag = false;
+    }
+
+    return success_flag;
+}
+#endif
\ No newline at end of file