Diff: Engine.cpp

Revision:

11:10c01766f774

Parent:

10:b2dd5f484f98

Child:

12:d68c757d829a

--- a/Engine.cpp	Tue Apr 25 10:13:53 2017 +0000
+++ b/Engine.cpp	Mon May 01 13:01:57 2017 +0000
@@ -1,31 +1,36 @@
 #include "Engine.h"
 
+#define LEVEL_ONE 2
+#define LEVEL_TWO 3
+#define LEVEL_THREE 4
+#define LEVEL_FOUR 5
+#define LEVEL_FIVE 6
+
 Engine::Engine()
 {
     collisions = 0;
     wave_counter = 0;
+    ammo = 3;
 }
 
 Engine::~Engine()
 {
-} 
+}
+
 
-void Engine::init(int friendly_width,int friendly_height,int ship_size,int speed,N5110 &lcd, Gamepad &pad)
+// Initialization function:
+
+void Engine::init(int speed, N5110 &lcd, Gamepad &pad)
 {
-    _friendly_width = friendly_width;
-    _friendly_height = friendly_height;
-    _ship_size = ship_size;
     _speed = speed;
-    _friendlyx = GAP;
 
-    _friendly.init(_friendlyx,_friendly_height,_friendly_width);
-    _ship1.init(_ship_size,_speed);
-    _ship2.init(_ship_size,_speed);
-    _ship3.init(_ship_size,_speed);
-    _ship4.init(_ship_size,_speed);
-    _ship5.init(_ship_size,_speed);
-    _ship6.init(_ship_size,_speed);
-    _bullet.init(_speed);
+    _friendly.init();       // friendly ship initialization
+    _ship1.init(_speed);    // enemy ships initialization
+    _ship2.init(_speed);
+    _ship3.init(_speed);
+    _ship4.init(_speed);
+    _ship5.init(_speed);
+    _ship6.init(_speed);
 }
 
 void Engine::read_input(Gamepad &pad)
@@ -34,33 +39,22 @@
     _mag = pad.get_mag();
 }
 
-// DRAWING FUNCTIONS
+
+// ::: DRAWING FUNCTIONS :::
 
 void Engine::draw(N5110 &lcd)
 {
-    grid_draw(lcd);
-    ships_draw(lcd);
-    _friendly.draw(lcd);
-    _stats.draw_health(lcd);
-    _stats.check_health(lcd, collisions);
-    wave_draw(lcd);
+    _stats.grid_draw(lcd);                  // initial grid and border generation
+    _stats.draw_health(lcd);                // health counter generation (initial state)
+    _stats.check_health(lcd, collisions);   // health counter generation (later states)
+    _stats.check_rocket(lcd, ammo);         // rocket and ammo generation
+    _stats.wave_draw(lcd, wave_counter);    // wave counter generation 
+    _friendly.draw(lcd);                    // friendly ship generation
+    ships_draw(lcd);                        // enemy ships generation
 }
 
-void Engine::grid_draw(N5110 &lcd)
-{
-    lcd.drawRect(0, 0, WIDTH, HEIGHT-8, FILL_TRANSPARENT);
-    lcd.drawLine(WIDTH-1, HEIGHT-8, WIDTH-1, HEIGHT, 1);
-    lcd.drawLine(WIDTH-11, HEIGHT-8, WIDTH-11, HEIGHT, 1);
-    lcd.drawLine(12, HEIGHT-1, WIDTH, HEIGHT-1, 1);
-    lcd.drawLine(12, HEIGHT-8, 12, HEIGHT, 1);
-}
 
-void Engine::wave_draw(N5110 &lcd)
-{
-    char buffer[14];
-    int length = sprintf(buffer,"%2d",wave_counter);
-    lcd.printString(buffer,0,5);
-}
+// Enemy ships generation:
 
 void Engine::ships_draw(N5110 &lcd)
 {
@@ -72,12 +66,22 @@
     _ship6.draw(lcd);
 }
 
+
+// State change checker:
+
 void Engine::checker(N5110 &lcd, Gamepad &pad)
 {
-    check_pass(pad);
-    check_death(lcd, pad);
+    check_pass(pad);            // checks if enemy passed screen border and generates another
+    check_death_all(lcd, pad);  // checks for collisions and eventual friendly death
+    level_two(lcd, pad);        // checks if level two has been reached, same for below
+    level_three(lcd, pad);
+    level_four(lcd, pad);
+    level_five(lcd, pad);
 }
 
+
+// Dynamic object position/velocity updater:
+
 void Engine::update(N5110 &lcd, Gamepad &pad)
 {
     _friendly.update(_d,_mag);
@@ -87,195 +91,266 @@
     _ship4.update();
     _ship5.update();
     _ship6.update();
-    //_bullet.update();
 }
 
-void Engine::shoot(N5110 &lcd, Gamepad &pad, int speed)
+
+// Function to enable shooting and eliminating enemy ships:
+
+void Engine::shoot(N5110 &lcd, Gamepad &pad)
 {
-    _speed = speed;
+    Vector2D friendly_pos = _friendly.get_pos();
+    _x = friendly_pos.x+6;
+    _y = friendly_pos.y+3;
+    _bullet.init(_x, _y);
     
-    if (pad.check_event(Gamepad::A_PRESSED) == true) 
+    if ((pad.check_event(Gamepad::B_PRESSED) == true) &&
+        (ammo > 0))
     {    
-        //trigger = true;
+        trigger = true;
     }
     
-    //if (trigger == true) 
-    //{   
-        //pad.tone(1200.0,0.1);
-        //_bullet.init(_speed);
-        //_bullet.draw(lcd);
-        //_bullet.update();
-        //trigger = false;
-    //}
+    if (trigger == true) 
+    {   
+        _bullet.draw(lcd);
+        check_enemy_death(pad);
+        pad.tone(1500.0,0.1);
+        ammo = ammo - 1;
+        trigger = false;
+    }
 }
 
+
+// Checks if (each) enemy ship passed off screen and re-initializes ones that have: (Wave counter associated with ship1)
+
 void Engine::check_pass(Gamepad &pad)
 {
     Vector2D ship1_pos = _ship1.get_pos();
     
-    if (ship1_pos.x + _ship_size < 0) 
+    if (ship1_pos.x < 0) 
     {
-        _ship1.init(_ship_size,_speed);
+        _ship1.init(_speed);
         wave_counter = wave_counter + 1;
     }
     
     Vector2D ship2_pos = _ship2.get_pos();
     
-    if (ship2_pos.x + _ship_size < 0) 
+    if (ship2_pos.x < 0) 
     {
-        _ship2.init(_ship_size,_speed);
+        _ship2.init(_speed);
     }
     
     Vector2D ship3_pos = _ship3.get_pos();
     
-    if (ship3_pos.x + _ship_size < 0) 
+    if (ship3_pos.x < 0) 
     {
-        _ship3.init(_ship_size,_speed);
+        _ship3.init(_speed);
     }
     
     Vector2D ship4_pos = _ship4.get_pos();
     
-    if (ship4_pos.x + _ship_size < 0) 
+    if (ship4_pos.x < 0) 
     {
-        _ship4.init(_ship_size,_speed);
+        _ship4.init(_speed);
     }
     
     Vector2D ship5_pos = _ship5.get_pos();
     
-    if (ship5_pos.x + _ship_size < 0) 
+    if (ship5_pos.x < 0) 
     {
-        _ship5.init(_ship_size,_speed);
+        _ship5.init(_speed);
     }
     
     Vector2D ship6_pos = _ship6.get_pos();
     
-    if (ship6_pos.x + _ship_size < 0) 
+    if (ship6_pos.x < 0) 
     {
-        _ship6.init(_ship_size,_speed);
+        _ship6.init(_speed);
     }
 }
 
-void Engine::check_death1(N5110 &lcd, Gamepad &pad)
+
+// Checks if enemy ship has been destroyed:
+
+void Engine::check_enemy_death(Gamepad &pad)
 {
     Vector2D friendly_pos = _friendly.get_pos();
-    Vector2D ship1_pos = _ship1.get_pos();
     
-    if ((friendly_pos.y >= ship1_pos.y-5) && // change 5 to friendly size and 6 to ship size
-        (friendly_pos.y <= ship1_pos.y+5) && 
-        (friendly_pos.x+6 >= ship1_pos.x) && 
-        (friendly_pos.x+6 <= ship1_pos.x+5)) 
+    if (friendly_pos.y < 5) 
+    {
+        _ship1.init(_speed);
+    } 
+    else if ((friendly_pos.y < 11) &&
+            (friendly_pos.y > 4))
+    {
+        _ship2.init(_speed);
+    }
+    else if ((friendly_pos.y < 17) &&
+            (friendly_pos.y > 10))
+    {
+        _ship3.init(_speed);
+    }
+    else if ((friendly_pos.y < 25) &&
+            (friendly_pos.y > 16))
+    {
+        _ship4.init(_speed);
+    }
+    else if ((friendly_pos.y < 31) &&
+            (friendly_pos.y > 24))
+    {
+        _ship5.init(_speed);
+    }
+    else
+    {
+        _ship6.init(_speed);
+    }    
+}
+
+
+// Checks for collisions between friendly and enemy ship: (Associates collisions counter)
+
+void Engine::check_death(Gamepad &pad, Vector2D ship_pos)
+{
+    Vector2D friendly_pos = _friendly.get_pos();
+    
+    if ((friendly_pos.y >= ship_pos.y-5) && // change 5 to friendly size and 6 to ship size
+        (friendly_pos.y <= ship_pos.y+5) && 
+        (friendly_pos.x+6 >= ship_pos.x) && 
+        (friendly_pos.x+6 <= ship_pos.x+5)) 
     {
         pad.tone(800.0,0.1);
         collisions = collisions + 1;
     }
 }
 
-void Engine::check_death2(N5110 &lcd, Gamepad &pad)
+
+// Checks for collisions between friendly and each enemy ship:
+
+void Engine::check_death_all(N5110 &lcd, Gamepad &pad)
 {
-    Vector2D friendly_pos = _friendly.get_pos();
+    Vector2D ship1_pos = _ship1.get_pos();
     Vector2D ship2_pos = _ship2.get_pos();
+    Vector2D ship3_pos = _ship3.get_pos();
+    Vector2D ship4_pos = _ship4.get_pos();
+    Vector2D ship5_pos = _ship5.get_pos();
+    Vector2D ship6_pos = _ship6.get_pos();
     
-    if ((friendly_pos.y >= ship2_pos.y-5) && // change 5 to friendly size and 6 to ship size
-        (friendly_pos.y <= ship2_pos.y+5) && 
-        (friendly_pos.x+6 >= ship2_pos.x) && 
-        (friendly_pos.x+6 <= ship2_pos.x+5)) 
-    {
-        pad.tone(800.0,0.1);
-        collisions = collisions + 1;
-    }
+    check_death(pad, ship1_pos);
+    check_death(pad, ship2_pos);
+    check_death(pad, ship3_pos);
+    check_death(pad, ship4_pos);
+    check_death(pad, ship5_pos);
+    check_death(pad, ship6_pos);
+    game_over(lcd, pad);    // game over sequence, if health subzero
 }
 
-void Engine::check_death3(N5110 &lcd, Gamepad &pad)
+
+// Level two sequence, occurs if wave 5 is reached:
+
+void Engine::level_two(N5110 &lcd, Gamepad &pad)
 {
-    Vector2D friendly_pos = _friendly.get_pos();
-    Vector2D ship3_pos = _ship3.get_pos();
-    
-    if ((friendly_pos.y >= ship3_pos.y-5) && // change 5 to friendly size and 6 to ship size
-        (friendly_pos.y <= ship3_pos.y+5) && 
-        (friendly_pos.x+6 >= ship3_pos.x) && 
-        (friendly_pos.x+6 <= ship3_pos.x+5)) 
+    if (wave_counter == 5) 
     {
-        pad.tone(800.0,0.1);
-        collisions = collisions + 1;
+        lcd.drawRect(0,0,84,48,FILL_WHITE);
+        lcd.printString("Nice! Level 2",0,1);
+        lcd.printString("  Press Back!  ",0,4);
+        lcd.refresh();
+        wait(1);
+        
+        while (pad.check_event(Gamepad::BACK_PRESSED) == false) {
+            wait(0.1);
+        }
+        
+        init(LEVEL_TWO, lcd, pad);
+        wave_counter = 6;
     }
 }
 
-void Engine::check_death4(N5110 &lcd, Gamepad &pad)
+
+// Level three sequence, occurs if wave 25 is reached:
+
+void Engine::level_three(N5110 &lcd, Gamepad &pad)
 {
-    Vector2D friendly_pos = _friendly.get_pos();
-    Vector2D ship4_pos = _ship4.get_pos();
-    
-    if ((friendly_pos.y >= ship4_pos.y-5) && // change 5 to friendly size and 6 to ship size
-        (friendly_pos.y <= ship4_pos.y+5) && 
-        (friendly_pos.x+6 >= ship4_pos.x) && 
-        (friendly_pos.x+6 <= ship4_pos.x+5)) 
+    if (wave_counter == 25) 
     {
-        pad.tone(800.0,0.1);
-        collisions = collisions + 1;
+        lcd.drawRect(0,0,84,48,FILL_WHITE);
+        lcd.printString("Nice! Level 3",0,1);
+        lcd.printString("  Press Back!  ",0,4);
+        lcd.refresh();
+        wait(1);
+        
+        while (pad.check_event(Gamepad::BACK_PRESSED) == false) {
+            wait(0.1);
+        }
+        
+        init(LEVEL_THREE, lcd, pad);
+        wave_counter = 26;
     }
 }
 
-void Engine::check_death5(N5110 &lcd, Gamepad &pad)
+
+// Level three sequence, occurs if wave 50 is reached:
+
+void Engine::level_four(N5110 &lcd, Gamepad &pad)
 {
-    Vector2D friendly_pos = _friendly.get_pos();
-    Vector2D ship5_pos = _ship5.get_pos();
-    
-    if ((friendly_pos.y >= ship5_pos.y-5) && // change 5 to friendly size and 6 to ship size
-        (friendly_pos.y <= ship5_pos.y+5) && 
-        (friendly_pos.x+6 >= ship5_pos.x) && 
-        (friendly_pos.x+6 <= ship5_pos.x+5)) 
+    if (wave_counter == 50) 
     {
-        pad.tone(800.0,0.1);
-        collisions = collisions + 1;
+        lcd.drawRect(0,0,84,48,FILL_WHITE);
+        lcd.printString("Nice! Level 4",0,1);
+        lcd.printString("  Press Back!  ",0,4);
+        lcd.refresh();
+        wait(1);
+        
+        while (pad.check_event(Gamepad::BACK_PRESSED) == false) {
+            wait(0.1);
+        }
+        
+        init(LEVEL_FOUR, lcd, pad);
+        wave_counter = 51;
     }
 }
 
-void Engine::check_death6(N5110 &lcd, Gamepad &pad)
+
+// Level five sequence, occurs if wave 100 is reached:
+
+void Engine::level_five(N5110 &lcd, Gamepad &pad)
 {
-    Vector2D friendly_pos = _friendly.get_pos();
-    Vector2D ship6_pos = _ship6.get_pos();
-    
-    if ((friendly_pos.y >= ship6_pos.y-5) && // change 5 to friendly size and 6 to ship size
-        (friendly_pos.y <= ship6_pos.y+5) && 
-        (friendly_pos.x+6 >= ship6_pos.x) && 
-        (friendly_pos.x+6 <= ship6_pos.x+5)) 
+    if (wave_counter == 100) 
     {
-        pad.tone(800.0,0.1);
-        collisions = collisions + 1;
+        lcd.drawRect(0,0,84,48,FILL_WHITE);
+        lcd.printString("5. Good Luck!",0,1);
+        lcd.printString("  Press Back!  ",0,4);
+        lcd.refresh();
+        wait(1);
+        
+        while (pad.check_event(Gamepad::BACK_PRESSED) == false) {
+            wait(0.1);
+        }
+        
+        init(LEVEL_FIVE, lcd, pad);
+        wave_counter = 101;
     }
 }
 
-void Engine::check_death(N5110 &lcd, Gamepad &pad)
-{
-    check_death1(lcd, pad);
-    check_death2(lcd, pad);
-    check_death3(lcd, pad);
-    check_death4(lcd, pad);
-    check_death5(lcd, pad);
-    check_death6(lcd, pad);
-    game_over(lcd, pad);
-}
+
+// Game over sequence, ends game if health is below zero:
 
 void Engine::game_over(N5110 &lcd, Gamepad &pad)
 {
     if (collisions >= 6) 
     {
         lcd.drawRect(0,0,84,48,FILL_WHITE);
-        lcd.printString("  You Lose! ",0,0);
-        lcd.printString("  Press Right ",0,2);
-        lcd.printString("  & Left! ",0,4);
+        lcd.printString("  You Lose! ",0,1);
+        lcd.printString("  Press Back! ",0,4);
         lcd.refresh();
         wait(1);
-        //printf("Hello\n");
         
-        while  ((pad.check_event(Gamepad::R_PRESSED) == false) || 
-                (pad.check_event(Gamepad::L_PRESSED) == false)) {
+        while (pad.check_event(Gamepad::BACK_PRESSED) == false) {
             wait(0.1);
-            //printf("3333\n");
         }
         
-        init(_friendly_width, _friendly_height, _ship_size, _speed, lcd, pad);
+        init(LEVEL_ONE, lcd, pad);
         collisions = 0;
         wave_counter = 0;
+        ammo = 3;
     }
 }
\ No newline at end of file