ELEC2645 (2018/19) / Mbed 2 deprecated el17dg

Initial publish

Dependencies:   mbed

Fork of el17dg by Dmitrijs Griskovs

game/stars.h@35:172db1608332, 2019-04-30 (annotated)

Committer:
Noximilien
Date:
Tue Apr 30 20:51:39 2019 +0000
Revision:
35:172db1608332
Parent:
34:754915ce9de5
Child:
36:207ec7db8648
Have finished added comments. Cleaned the code. added a note to the player. added intro credits.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Noximilien 21:0eb394495b8a 1 #ifndef STARS_H
Noximilien 21:0eb394495b8a 2 #define STARS_H
Noximilien 21:0eb394495b8a 3
Noximilien 31:becb8f6bf7b7 4 /**
Noximilien 31:becb8f6bf7b7 5 * Stars Class
Noximilien 31:becb8f6bf7b7 6 * @brief Manages, updates and draws the background stars.
Noximilien 29:579e00b7f118 7 * @author Dmitrijs Griskovs
Noximilien 29:579e00b7f118 8 * @date 15/04/2019
Noximilien 29:579e00b7f118 9 */
Noximilien 27:f05f4e738ba9 10 class Stars {
Noximilien 23:240bc00ef25b 11 public:
Noximilien 32:5403bb974294 12 /**
Noximilien 32:5403bb974294 13 * @var static const int max_small_stars variable;
Noximilien 32:5403bb974294 14 * @brief Sets the limit of maximum small stars allowed on the screen.
Noximilien 32:5403bb974294 15 */
Noximilien 31:becb8f6bf7b7 16 static const int max_small_stars = 10;
Noximilien 32:5403bb974294 17 /**
Noximilien 32:5403bb974294 18 * @var static const int max_medium_stars variable;
Noximilien 32:5403bb974294 19 * @brief Sets the limit of maximum medium stars allowed on the screen.
Noximilien 32:5403bb974294 20 */
Noximilien 31:becb8f6bf7b7 21 static const int max_medium_stars = 5;
Noximilien 31:becb8f6bf7b7 22
Noximilien 23:240bc00ef25b 23 GameObject small_stars[max_small_stars];
Noximilien 23:240bc00ef25b 24 GameObject medium_stars[max_medium_stars];
Noximilien 23:240bc00ef25b 25
Noximilien 31:becb8f6bf7b7 26 /**
Noximilien 31:becb8f6bf7b7 27 * @brief Makes a small star active and gives it the start positions.
Noximilien 31:becb8f6bf7b7 28 * @details Searches through the small stars array and if a star is not active,
Noximilien 31:becb8f6bf7b7 29 * it becomes active and is given the position of x (which is 0) and.
Noximilien 31:becb8f6bf7b7 30 * and random position of y.
Noximilien 31:becb8f6bf7b7 31 */
Noximilien 23:240bc00ef25b 32 void newSmallStarFlies() {
Noximilien 23:240bc00ef25b 33 // Search the array of stars if inactive we can use it. - the same as with blasts
Noximilien 23:240bc00ef25b 34 int found = -1;
Noximilien 23:240bc00ef25b 35 for (int i = 0; i < max_small_stars; ++i) {
Noximilien 23:240bc00ef25b 36 if (!small_stars[i].active) {
Noximilien 23:240bc00ef25b 37 found = i;
Noximilien 23:240bc00ef25b 38 break;
Noximilien 23:240bc00ef25b 39 }
Noximilien 23:240bc00ef25b 40 }
Noximilien 23:240bc00ef25b 41
Noximilien 23:240bc00ef25b 42 if (found != -1) {
Noximilien 23:240bc00ef25b 43 small_stars[found].active = true;
Noximilien 23:240bc00ef25b 44 small_stars[found].pos.x = screen_width;
Noximilien 23:240bc00ef25b 45 small_stars[found].pos.y = rand() % screen_height + game_area_y;
Noximilien 21:0eb394495b8a 46 }
Noximilien 21:0eb394495b8a 47 }
Noximilien 31:becb8f6bf7b7 48 /**
Noximilien 31:becb8f6bf7b7 49 * @brief draws small stars on the screen.
Noximilien 31:becb8f6bf7b7 50 * @details when a small star is active, this function updates the position and
Noximilien 31:becb8f6bf7b7 51 * draws it on the screen. Also, When the star leaves the screen limits it
Noximilien 31:becb8f6bf7b7 52 * deactivates the star for a new star to fly.
Noximilien 31:becb8f6bf7b7 53 */
Noximilien 23:240bc00ef25b 54 void updateAndDrawSmallStars(){
Noximilien 23:240bc00ef25b 55 for (int i = 0; i < max_small_stars; ++i) {
Noximilien 23:240bc00ef25b 56 if (small_stars[i].active) {
Noximilien 23:240bc00ef25b 57 small_stars[i].pos.x -= small_star_speed;
Noximilien 23:240bc00ef25b 58 if (small_stars[i].pos.x <= 0){
Noximilien 23:240bc00ef25b 59 small_stars[i].active = false;
Noximilien 29:579e00b7f118 60 }
Noximilien 32:5403bb974294 61 drawSpriteOnTop(small_stars[i].pos, small_star_sprite);
Noximilien 21:0eb394495b8a 62 }
Noximilien 29:579e00b7f118 63 }
Noximilien 21:0eb394495b8a 64 }
Noximilien 31:becb8f6bf7b7 65 /**
Noximilien 31:becb8f6bf7b7 66 * @brief Makes a medium star active and gives it the start positions.
Noximilien 31:becb8f6bf7b7 67 * @details Searches through the medium stars array and if a star is not active,
Noximilien 31:becb8f6bf7b7 68 * it becomes active and is given the position of x (which is 0) and.
Noximilien 31:becb8f6bf7b7 69 * and random position of y.
Noximilien 31:becb8f6bf7b7 70 */
Noximilien 23:240bc00ef25b 71 void newMediumStarFlies() {
Noximilien 23:240bc00ef25b 72 // Search the array of stars if inactive we can use it. - the same as with blasts
Noximilien 23:240bc00ef25b 73 int found = -1;
Noximilien 23:240bc00ef25b 74 for (int i = 0; i < max_medium_stars; ++i) {
Noximilien 23:240bc00ef25b 75 if (!medium_stars[i].active) {
Noximilien 23:240bc00ef25b 76 found = i;
Noximilien 23:240bc00ef25b 77 break;
Noximilien 21:0eb394495b8a 78 }
Noximilien 23:240bc00ef25b 79 }
Noximilien 23:240bc00ef25b 80 if (found != -1) {
Noximilien 23:240bc00ef25b 81 medium_stars[found].active = true;
Noximilien 23:240bc00ef25b 82 medium_stars[found].pos.x = screen_width;
Noximilien 23:240bc00ef25b 83 medium_stars[found].pos.y = rand() % screen_height + game_area_y;
Noximilien 21:0eb394495b8a 84 }
Noximilien 21:0eb394495b8a 85 }
Noximilien 31:becb8f6bf7b7 86 /**
Noximilien 31:becb8f6bf7b7 87 * @brief draws medium stars on the screen.
Noximilien 31:becb8f6bf7b7 88 * @details when a medium star is active, this function updates the position and
Noximilien 31:becb8f6bf7b7 89 * draws it on the screen. Also, When the star leaves the screen limits it
Noximilien 31:becb8f6bf7b7 90 * deactivates the star for a new star to fly.
Noximilien 31:becb8f6bf7b7 91 */
Noximilien 23:240bc00ef25b 92 void updateAndDrawMediumStars(){
Noximilien 23:240bc00ef25b 93 for (int i = 0; i < max_medium_stars; ++i) {
Noximilien 23:240bc00ef25b 94 if (medium_stars[i].active) {
Noximilien 23:240bc00ef25b 95 medium_stars[i].pos.x -= medium_star_speed;
Noximilien 23:240bc00ef25b 96 if (medium_stars[i].pos.x <= -2){
Noximilien 23:240bc00ef25b 97 medium_stars[i].active = false;
Noximilien 23:240bc00ef25b 98 }
Noximilien 32:5403bb974294 99 drawSpriteOnTop(medium_stars[i].pos, medium_star_sprite);
Noximilien 23:240bc00ef25b 100 }
Noximilien 23:240bc00ef25b 101 }
Noximilien 23:240bc00ef25b 102 }
Noximilien 28:35af3843de8f 103
Noximilien 31:becb8f6bf7b7 104 /** @brief A separate function for delaying the stars spawn time.*/
Noximilien 28:35af3843de8f 105 void starsSpawnDelay(){
Noximilien 28:35af3843de8f 106 if (stars_delay == stars_delay_max){
Noximilien 31:becb8f6bf7b7 107 //This is dealy between stars generation.
Noximilien 31:becb8f6bf7b7 108 newSmallStarFlies();
Noximilien 31:becb8f6bf7b7 109 newMediumStarFlies();
Noximilien 31:becb8f6bf7b7 110 stars_delay = 0;
Noximilien 28:35af3843de8f 111 }
Noximilien 31:becb8f6bf7b7 112 else {
Noximilien 31:becb8f6bf7b7 113 stars_delay += 1;
Noximilien 31:becb8f6bf7b7 114 }
Noximilien 28:35af3843de8f 115 }
Noximilien 35:172db1608332 116 /**
Noximilien 35:172db1608332 117 * @var int stars delay;
Noximilien 35:172db1608332 118 * @brief The value is incremented every time until it reaches stars_delay_max
Noximilien 35:172db1608332 119 * value, which triggers the stars spawn and then is reseted to zero. .
Noximilien 35:172db1608332 120 */
Noximilien 35:172db1608332 121 int stars_delay;
Noximilien 35:172db1608332 122 private:
Noximilien 35:172db1608332 123 /**
Noximilien 35:172db1608332 124 * @var static const int small_star_speed variable;
Noximilien 35:172db1608332 125 * @brief Sets the speed of the small stars.
Noximilien 35:172db1608332 126 */
Noximilien 35:172db1608332 127 static const int small_star_speed = 3;
Noximilien 35:172db1608332 128 /**
Noximilien 35:172db1608332 129 * @var static const int medium_star_speed variable;
Noximilien 35:172db1608332 130 * @brief Sets the speed of the medium stars.
Noximilien 35:172db1608332 131 */
Noximilien 35:172db1608332 132 static const int medium_star_speed = 6;
Noximilien 35:172db1608332 133 /**
Noximilien 35:172db1608332 134 * @var static const int stars_delay_max variable;
Noximilien 35:172db1608332 135 * @brief Sets the limit of the stars delay spawn.
Noximilien 35:172db1608332 136 */
Noximilien 35:172db1608332 137 static const int stars_delay_max = 5;
Noximilien 23:240bc00ef25b 138 };
Noximilien 21:0eb394495b8a 139 #endif