Guy Maor / Mbed 2 deprecated Starship

This code contains the game Starship designed for the STM32F429i-DISC1 board. It requires a keyboard to play.

Dependencies:   Starship LCD_DISCO_F429ZI USBHost mbed

Dependents:   Starship

Game.c@1:527a11035e0b, 2017-11-17 (annotated)

Committer:
Oshyrath
Date:
Fri Nov 17 02:23:33 2017 +0000
Revision:
1:527a11035e0b
First Publish of the code.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Oshyrath 1:527a11035e0b 1 #include "Game.h"
Oshyrath 1:527a11035e0b 2
Oshyrath 1:527a11035e0b 3
Oshyrath 1:527a11035e0b 4 int16_t level;
Oshyrath 1:527a11035e0b 5 int16_t levelScore;
Oshyrath 1:527a11035e0b 6 int16_t totalScore;
Oshyrath 1:527a11035e0b 7 int16_t lives;
Oshyrath 1:527a11035e0b 8 int8_t X_DIR;
Oshyrath 1:527a11035e0b 9 int8_t Y_DIR;
Oshyrath 1:527a11035e0b 10 int8_t didUserRequestFire;
Oshyrath 1:527a11035e0b 11
Oshyrath 1:527a11035e0b 12 void newGame()
Oshyrath 1:527a11035e0b 13 {
Oshyrath 1:527a11035e0b 14 lives = STARTING_LIFE_TOTAL;
Oshyrath 1:527a11035e0b 15 level = 1;
Oshyrath 1:527a11035e0b 16 levelScore = 0;
Oshyrath 1:527a11035e0b 17 totalScore = 0;
Oshyrath 1:527a11035e0b 18 }
Oshyrath 1:527a11035e0b 19 void newLevel()
Oshyrath 1:527a11035e0b 20 {
Oshyrath 1:527a11035e0b 21 X_DIR = NO_DIR;
Oshyrath 1:527a11035e0b 22 Y_DIR = NO_DIR;
Oshyrath 1:527a11035e0b 23 clearEnemies();
Oshyrath 1:527a11035e0b 24 clearBullets();
Oshyrath 1:527a11035e0b 25 resetPlayer();
Oshyrath 1:527a11035e0b 26 clearPowerUps();
Oshyrath 1:527a11035e0b 27 levelScore = 0;
Oshyrath 1:527a11035e0b 28 }
Oshyrath 1:527a11035e0b 29 char didLoseLife()
Oshyrath 1:527a11035e0b 30 {
Oshyrath 1:527a11035e0b 31 return player.health ? 0 : 1;
Oshyrath 1:527a11035e0b 32 }
Oshyrath 1:527a11035e0b 33 char isGameOver()
Oshyrath 1:527a11035e0b 34 {
Oshyrath 1:527a11035e0b 35 return lives ? 0 : 1;
Oshyrath 1:527a11035e0b 36 }
Oshyrath 1:527a11035e0b 37 int8_t shouldAddEnemy()
Oshyrath 1:527a11035e0b 38 {
Oshyrath 1:527a11035e0b 39 return enemyCount<(level+2) ? 1 : 0;
Oshyrath 1:527a11035e0b 40 }
Oshyrath 1:527a11035e0b 41 void addRandomEnemy()
Oshyrath 1:527a11035e0b 42 {
Oshyrath 1:527a11035e0b 43 int16_t x_pos = randomInt(0,LCD_WIDTH-ENEMY_WIDTH);
Oshyrath 1:527a11035e0b 44 int8_t x_vel_var = level>=3 ? 3 : level;
Oshyrath 1:527a11035e0b 45 int16_t x_vel = randomInt(-x_vel_var,x_vel_var)*SLOWEST_ENEMY_X_VELOCITY;
Oshyrath 1:527a11035e0b 46 int8_t y_vel_var = level>=3 ? 3 : level;
Oshyrath 1:527a11035e0b 47 int16_t y_vel = randomInt(1,y_vel_var)*SLOWEST_ENEMY_Y_VELOCITY;
Oshyrath 1:527a11035e0b 48 int16_t health = randomInt(1,level);
Oshyrath 1:527a11035e0b 49 addEnemy(x_pos,x_vel,y_vel,health);
Oshyrath 1:527a11035e0b 50 }
Oshyrath 1:527a11035e0b 51 char didLevelUp()
Oshyrath 1:527a11035e0b 52 {
Oshyrath 1:527a11035e0b 53 if(levelScore>= level*4+6)
Oshyrath 1:527a11035e0b 54 return 1;
Oshyrath 1:527a11035e0b 55 return 0;
Oshyrath 1:527a11035e0b 56 }
Oshyrath 1:527a11035e0b 57 void callMultiFunc()
Oshyrath 1:527a11035e0b 58 {
Oshyrath 1:527a11035e0b 59 callMultiFuncEnemy();
Oshyrath 1:527a11035e0b 60 callMultiFuncBullet();
Oshyrath 1:527a11035e0b 61 callMultiFuncPowerUp();//DEBUG!!!
Oshyrath 1:527a11035e0b 62 callMultiFuncPlayer();//DEBUG!!!
Oshyrath 1:527a11035e0b 63 }
Oshyrath 1:527a11035e0b 64 void addWideShotBullets()
Oshyrath 1:527a11035e0b 65 {
Oshyrath 1:527a11035e0b 66 int16_t xP = getPlayerBulletPos(X_ID);
Oshyrath 1:527a11035e0b 67 int16_t yP = getPlayerBulletPos(Y_ID);
Oshyrath 1:527a11035e0b 68 int16_t yV = -DEFAULT_BULLET_SPEED;
Oshyrath 1:527a11035e0b 69 int16_t xV_Right = (int16_t)(yV * WIDE_SHOT_X_VELOCITY_FACTOR);
Oshyrath 1:527a11035e0b 70 int16_t xV_Left = -xV_Right;
Oshyrath 1:527a11035e0b 71 int8_t powr = player.powerShotTimer ? POWER_BULLET_ID : DEFAULT_BULLET_ID;
Oshyrath 1:527a11035e0b 72 addPlayerBullet(xP, yP, xV_Right, yV, powr, NOT_BOMB_ID);
Oshyrath 1:527a11035e0b 73 addPlayerBullet(xP, yP, xV_Left, yV, powr, NOT_BOMB_ID);
Oshyrath 1:527a11035e0b 74 }
Oshyrath 1:527a11035e0b 75
Oshyrath 1:527a11035e0b 76 void firePlayerBullet()
Oshyrath 1:527a11035e0b 77 {
Oshyrath 1:527a11035e0b 78 player.gunTimer = PLAYER_FIRE_PERIOD;
Oshyrath 1:527a11035e0b 79 int16_t xP = getPlayerBulletPos(X_ID);
Oshyrath 1:527a11035e0b 80 int16_t yP = getPlayerBulletPos(Y_ID);
Oshyrath 1:527a11035e0b 81 int16_t xV = 0;
Oshyrath 1:527a11035e0b 82 int16_t yV = -DEFAULT_BULLET_SPEED;
Oshyrath 1:527a11035e0b 83 int8_t powr = player.powerShotTimer ? POWER_BULLET_ID : DEFAULT_BULLET_ID;
Oshyrath 1:527a11035e0b 84 addPlayerBullet(xP, yP, xV, yV, powr, NOT_BOMB_ID);
Oshyrath 1:527a11035e0b 85 if(player.wideShotTimer)
Oshyrath 1:527a11035e0b 86 addWideShotBullets();
Oshyrath 1:527a11035e0b 87 }
Oshyrath 1:527a11035e0b 88 int8_t didBulletHitEnemy(struct Enemy * enemy, struct Bullet * bullet)
Oshyrath 1:527a11035e0b 89 {
Oshyrath 1:527a11035e0b 90 return !((bullet->y_pos>enemy->y_pos+ENEMY_HEIGHT)||
Oshyrath 1:527a11035e0b 91 (bullet->y_pos+BULLET_SIZE<enemy->y_pos)||
Oshyrath 1:527a11035e0b 92 (bullet->x_pos>enemy->x_pos+ENEMY_WIDTH)||
Oshyrath 1:527a11035e0b 93 (bullet->x_pos+BULLET_SIZE<enemy->x_pos));
Oshyrath 1:527a11035e0b 94
Oshyrath 1:527a11035e0b 95 }
Oshyrath 1:527a11035e0b 96 int8_t didBulletHitPlayer(struct Bullet * bullet)
Oshyrath 1:527a11035e0b 97 {
Oshyrath 1:527a11035e0b 98 return !((bullet->y_pos>player.y_pos+PLAYER_HEIGHT)||
Oshyrath 1:527a11035e0b 99 (bullet->y_pos+BULLET_SIZE<player.y_pos)||
Oshyrath 1:527a11035e0b 100 (bullet->x_pos>player.x_pos+PLAYER_WIDTH)||
Oshyrath 1:527a11035e0b 101 (bullet->x_pos+BULLET_SIZE<player.x_pos));
Oshyrath 1:527a11035e0b 102 }
Oshyrath 1:527a11035e0b 103 int8_t didPlayerCollideWithEnemy(struct Enemy * enemy)
Oshyrath 1:527a11035e0b 104 {
Oshyrath 1:527a11035e0b 105 return !((enemy->y_pos>player.y_pos+PLAYER_HEIGHT)||
Oshyrath 1:527a11035e0b 106 (enemy->y_pos+ENEMY_HEIGHT<player.y_pos)||
Oshyrath 1:527a11035e0b 107 (enemy->x_pos>player.x_pos+PLAYER_WIDTH)||
Oshyrath 1:527a11035e0b 108 (enemy->x_pos+ENEMY_WIDTH<player.x_pos)) &&
Oshyrath 1:527a11035e0b 109 !player.shieldTimer;
Oshyrath 1:527a11035e0b 110 }
Oshyrath 1:527a11035e0b 111 void collideBulletsWithPlayer()
Oshyrath 1:527a11035e0b 112 {
Oshyrath 1:527a11035e0b 113 int j;
Oshyrath 1:527a11035e0b 114 for(j = enemyBulletCount; j;j--)
Oshyrath 1:527a11035e0b 115 {
Oshyrath 1:527a11035e0b 116 enemyBulletPTR=enemyBulletPTR->next;
Oshyrath 1:527a11035e0b 117 if(didBulletHitPlayer(enemyBulletPTR))
Oshyrath 1:527a11035e0b 118 {
Oshyrath 1:527a11035e0b 119 dealDamageToPlayer();
Oshyrath 1:527a11035e0b 120 removeBullet(enemyBulletPTR);
Oshyrath 1:527a11035e0b 121 }
Oshyrath 1:527a11035e0b 122 }
Oshyrath 1:527a11035e0b 123 }
Oshyrath 1:527a11035e0b 124 void checkIfBulletsHitEnemies()
Oshyrath 1:527a11035e0b 125 {
Oshyrath 1:527a11035e0b 126 int i;
Oshyrath 1:527a11035e0b 127 for(i = enemyCount; i; i--)
Oshyrath 1:527a11035e0b 128 {
Oshyrath 1:527a11035e0b 129 enemyPTR = enemyPTR->next;
Oshyrath 1:527a11035e0b 130 int j;
Oshyrath 1:527a11035e0b 131 for(j = playerBulletCount; j;j--)
Oshyrath 1:527a11035e0b 132 {
Oshyrath 1:527a11035e0b 133 playerBulletPTR=playerBulletPTR->next;
Oshyrath 1:527a11035e0b 134 if(didBulletHitEnemy(enemyPTR,playerBulletPTR))
Oshyrath 1:527a11035e0b 135 {
Oshyrath 1:527a11035e0b 136 int16_t PowUpPosX = enemyPTR->x_pos + ENEMY_WIDTH/2 - POWER_UP_SIZE/2;
Oshyrath 1:527a11035e0b 137 int16_t PowUpPosY = enemyPTR->y_pos + ENEMY_HEIGHT/2 - POWER_UP_SIZE/2;
Oshyrath 1:527a11035e0b 138 int8_t points = dealDamageToEnemy(enemyPTR,playerBulletPTR->powerShot ? POWER_BULLET_DAMAGE : NORMAL_BULLET_DAMAGE);
Oshyrath 1:527a11035e0b 139 if(points && probabilityOfSuccess(PROPABILITY_DROP_POWERUP))
Oshyrath 1:527a11035e0b 140 addPowerUp(PowUpPosX,PowUpPosY);
Oshyrath 1:527a11035e0b 141 levelScore+=points;
Oshyrath 1:527a11035e0b 142 totalScore+=points;
Oshyrath 1:527a11035e0b 143 removeBullet(playerBulletPTR);
Oshyrath 1:527a11035e0b 144 if(points)
Oshyrath 1:527a11035e0b 145 break;
Oshyrath 1:527a11035e0b 146 }
Oshyrath 1:527a11035e0b 147 }
Oshyrath 1:527a11035e0b 148 }
Oshyrath 1:527a11035e0b 149 }
Oshyrath 1:527a11035e0b 150 void enemiesFireBullet()
Oshyrath 1:527a11035e0b 151 {
Oshyrath 1:527a11035e0b 152 int i;
Oshyrath 1:527a11035e0b 153 for(i = enemyCount; i; i--)
Oshyrath 1:527a11035e0b 154 {
Oshyrath 1:527a11035e0b 155 if(!(enemyPTR->gunTimer))
Oshyrath 1:527a11035e0b 156 addEnemyBullet(getEnemyBulletPos(enemyPTR,X_ID),getEnemyBulletPos(enemyPTR,Y_ID));
Oshyrath 1:527a11035e0b 157 enemyPTR = enemyPTR->next;
Oshyrath 1:527a11035e0b 158 }
Oshyrath 1:527a11035e0b 159 }
Oshyrath 1:527a11035e0b 160 void generateExplosion()
Oshyrath 1:527a11035e0b 161 {
Oshyrath 1:527a11035e0b 162 int16_t xP = getPlayerBulletPos(X_ID);
Oshyrath 1:527a11035e0b 163 int16_t yP = getPlayerBulletPos(Y_ID);
Oshyrath 1:527a11035e0b 164 int16_t i;
Oshyrath 1:527a11035e0b 165 for(i = 0; i<NUMBER_OF_BULLETS_PER_EXPLOSION; i++)
Oshyrath 1:527a11035e0b 166 {
Oshyrath 1:527a11035e0b 167 double angle = PI * 2.0 / NUMBER_OF_BULLETS_PER_EXPLOSION * i;
Oshyrath 1:527a11035e0b 168 int16_t xV = (int16_t)(sin(angle)*DEFAULT_BULLET_SPEED);
Oshyrath 1:527a11035e0b 169 int16_t yV = (int16_t)(cos(angle)*DEFAULT_BULLET_SPEED);
Oshyrath 1:527a11035e0b 170 addPlayerBullet(xP, yP, xV, yV, POWER_BULLET_ID, BOMB_BULLET_ID);
Oshyrath 1:527a11035e0b 171 }
Oshyrath 1:527a11035e0b 172 }
Oshyrath 1:527a11035e0b 173 void usePowerUpAbility(enum PowerUpType type)
Oshyrath 1:527a11035e0b 174 {
Oshyrath 1:527a11035e0b 175 switch(type)
Oshyrath 1:527a11035e0b 176 {
Oshyrath 1:527a11035e0b 177 case PU_RapidFire:
Oshyrath 1:527a11035e0b 178 player.rapidFireTimer = RAPID_FIRE_TIME;
Oshyrath 1:527a11035e0b 179 return;
Oshyrath 1:527a11035e0b 180 case PU_PowerShot:
Oshyrath 1:527a11035e0b 181 player.powerShotTimer = POWER_SHOT_TIME;
Oshyrath 1:527a11035e0b 182 return;
Oshyrath 1:527a11035e0b 183 case PU_FreezeEnemies:
Oshyrath 1:527a11035e0b 184 freezeEnemies();
Oshyrath 1:527a11035e0b 185 return;
Oshyrath 1:527a11035e0b 186 case PU_WideShot:
Oshyrath 1:527a11035e0b 187 player.wideShotTimer = WIDE_SHOT_TIME;
Oshyrath 1:527a11035e0b 188 return;
Oshyrath 1:527a11035e0b 189 case PU_Explosion:
Oshyrath 1:527a11035e0b 190 generateExplosion();
Oshyrath 1:527a11035e0b 191 return;
Oshyrath 1:527a11035e0b 192 case PU_BonusHealth:
Oshyrath 1:527a11035e0b 193 player.health = PLAYER_STARTING_HEALTH;
Oshyrath 1:527a11035e0b 194 return;
Oshyrath 1:527a11035e0b 195 case PU_Shield:
Oshyrath 1:527a11035e0b 196 player.shieldTimer = SHIELD_TIME;
Oshyrath 1:527a11035e0b 197 return;
Oshyrath 1:527a11035e0b 198 }
Oshyrath 1:527a11035e0b 199 }
Oshyrath 1:527a11035e0b 200 int8_t didPlayerHitPowerUp(struct PowerUp * powerUp)
Oshyrath 1:527a11035e0b 201 {
Oshyrath 1:527a11035e0b 202 return !((powerUp->y_pos>player.y_pos+PLAYER_HEIGHT)||
Oshyrath 1:527a11035e0b 203 (powerUp->y_pos+POWER_UP_SIZE<player.y_pos)||
Oshyrath 1:527a11035e0b 204 (powerUp->x_pos>player.x_pos+PLAYER_WIDTH)||
Oshyrath 1:527a11035e0b 205 (powerUp->x_pos+POWER_UP_SIZE<player.x_pos));
Oshyrath 1:527a11035e0b 206 }
Oshyrath 1:527a11035e0b 207 void pickUpPowerUps()
Oshyrath 1:527a11035e0b 208 {
Oshyrath 1:527a11035e0b 209 int i;
Oshyrath 1:527a11035e0b 210 for(i = powerUpCount; i; i--)
Oshyrath 1:527a11035e0b 211 {
Oshyrath 1:527a11035e0b 212 powerUpPTR = powerUpPTR->next;
Oshyrath 1:527a11035e0b 213 if(didPlayerHitPowerUp(powerUpPTR))
Oshyrath 1:527a11035e0b 214 {
Oshyrath 1:527a11035e0b 215 usePowerUpAbility(powerUpPTR->type);
Oshyrath 1:527a11035e0b 216 removePowerUp(powerUpPTR);
Oshyrath 1:527a11035e0b 217 }
Oshyrath 1:527a11035e0b 218 }
Oshyrath 1:527a11035e0b 219 }
Oshyrath 1:527a11035e0b 220 void collideWithEnemies()
Oshyrath 1:527a11035e0b 221 {
Oshyrath 1:527a11035e0b 222 int i;
Oshyrath 1:527a11035e0b 223 for(i = enemyCount; i; i--)
Oshyrath 1:527a11035e0b 224 {
Oshyrath 1:527a11035e0b 225 enemyPTR = enemyPTR->next;
Oshyrath 1:527a11035e0b 226 if(didPlayerCollideWithEnemy(enemyPTR))
Oshyrath 1:527a11035e0b 227 {
Oshyrath 1:527a11035e0b 228 player.health = 0;
Oshyrath 1:527a11035e0b 229 break;
Oshyrath 1:527a11035e0b 230 }
Oshyrath 1:527a11035e0b 231 }
Oshyrath 1:527a11035e0b 232 }
Oshyrath 1:527a11035e0b 233 void loopIteration()
Oshyrath 1:527a11035e0b 234 {
Oshyrath 1:527a11035e0b 235 if(shouldFire(didUserRequestFire))
Oshyrath 1:527a11035e0b 236 firePlayerBullet();
Oshyrath 1:527a11035e0b 237 didUserRequestFire = 0;
Oshyrath 1:527a11035e0b 238 if(shouldAddEnemy())
Oshyrath 1:527a11035e0b 239 addRandomEnemy();
Oshyrath 1:527a11035e0b 240 checkIfBulletsHitEnemies();
Oshyrath 1:527a11035e0b 241 movePlayer(X_DIR,Y_DIR);
Oshyrath 1:527a11035e0b 242 enemiesFireBullet();
Oshyrath 1:527a11035e0b 243 pickUpPowerUps();
Oshyrath 1:527a11035e0b 244 collideBulletsWithPlayer();
Oshyrath 1:527a11035e0b 245 collideWithEnemies();
Oshyrath 1:527a11035e0b 246 callMultiFunc();
Oshyrath 1:527a11035e0b 247 }