Richard Ellingworth / Mbed 2 deprecated RobotRic

Version of Robotron arcade game using LPC1768, a Gameduino shield, a serial EEPROM (for high scores), two microswitch joysticks and two buttons plus a box to put it in. 20 levels of mayhem.

Dependencies:   25LCxxx_SPI CommonTypes Gameduino mbed

BrainObject.cpp@7:e72691603fd3, 2013-06-08 (annotated)

Committer:
RichardE
Date:
Sat Jun 08 16:44:54 2013 +0000
Revision:
7:e72691603fd3
Child:
10:bfa1c307c99d
Now have grunts wandering around on level 1. They follow the player but since no collision detection logic yet nobody ever gets killed.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
RichardE 7:e72691603fd3 1 /*
RichardE 7:e72691603fd3 2 * SOURCE FILE : BrainObject.cpp
RichardE 7:e72691603fd3 3 *
RichardE 7:e72691603fd3 4 * Represents a big square robot that crushes humans.
RichardE 7:e72691603fd3 5 *
RichardE 7:e72691603fd3 6 */
RichardE 7:e72691603fd3 7
RichardE 7:e72691603fd3 8 #include "BrainObject.h"
RichardE 7:e72691603fd3 9 #include "Gameduino.h"
RichardE 7:e72691603fd3 10 #include "FrameCounter.h"
RichardE 7:e72691603fd3 11 #include "ArenaConst.h"
RichardE 7:e72691603fd3 12 #include "Animations.h"
RichardE 7:e72691603fd3 13 #include "LevelData.h"
RichardE 7:e72691603fd3 14 #include "SpriteNumber.h"
RichardE 7:e72691603fd3 15 #include "BulletVelocityCalculator.h"
RichardE 7:e72691603fd3 16 #include "HumanObject.h"
RichardE 7:e72691603fd3 17 #include "Random.h"
RichardE 7:e72691603fd3 18
RichardE 7:e72691603fd3 19 /***************/
RichardE 7:e72691603fd3 20 /* CONSTRUCTOR */
RichardE 7:e72691603fd3 21 /***************/
RichardE 7:e72691603fd3 22 BrainObject::BrainObject() :
RichardE 7:e72691603fd3 23 HumansToChase( (GameObject**)NULL ),
RichardE 7:e72691603fd3 24 bulletActive( false ),
RichardE 7:e72691603fd3 25 bulletIndex( 0 )
RichardE 7:e72691603fd3 26 {
RichardE 7:e72691603fd3 27 // Movement is always restricted (property of GameObject).
RichardE 7:e72691603fd3 28 MovementRestricted = true;
RichardE 7:e72691603fd3 29 // Restrict to boundary of arena.
RichardE 7:e72691603fd3 30 Bounds = &ArenaRectangle;
RichardE 7:e72691603fd3 31 // Restrict bullet to boundary of arena.
RichardE 7:e72691603fd3 32 bullet.Bounds = &ArenaRectangle;
RichardE 7:e72691603fd3 33 }
RichardE 7:e72691603fd3 34
RichardE 7:e72691603fd3 35 /**************/
RichardE 7:e72691603fd3 36 /* DESTRUCTOR */
RichardE 7:e72691603fd3 37 /**************/
RichardE 7:e72691603fd3 38 BrainObject::~BrainObject() {
RichardE 7:e72691603fd3 39 }
RichardE 7:e72691603fd3 40
RichardE 7:e72691603fd3 41 /******************************************************/
RichardE 7:e72691603fd3 42 /* DETERMINE IF A HUMAN IS A VALID TARGET FOR A BRAIN */
RichardE 7:e72691603fd3 43 /******************************************************/
RichardE 7:e72691603fd3 44 // Returns true if object is a human that is valid for targeting by brain.
RichardE 7:e72691603fd3 45 bool BrainObject::ValidHuman( GameObject *object ) {
RichardE 7:e72691603fd3 46 HumanObject *human = (HumanObject*)object;
RichardE 7:e72691603fd3 47 return ( human != (HumanObject*)NULL ) && ( human->CurrentState == HumanObject::WalkingAbout );
RichardE 7:e72691603fd3 48 }
RichardE 7:e72691603fd3 49
RichardE 7:e72691603fd3 50 /******************/
RichardE 7:e72691603fd3 51 /* START A BULLET */
RichardE 7:e72691603fd3 52 /******************/
RichardE 7:e72691603fd3 53 // Pass sprite number to use in spriteNumber.
RichardE 7:e72691603fd3 54 // Returns pointer to bullet object or NULL on failure.
RichardE 7:e72691603fd3 55 BrainBulletObject *BrainObject::StartBullet( UInt8 spriteNumber ) {
RichardE 7:e72691603fd3 56 // Give bullet same coordinates as the brain that fired it.
RichardE 7:e72691603fd3 57 bullet.Xco = Xco;
RichardE 7:e72691603fd3 58 bullet.Yco = Yco;
RichardE 7:e72691603fd3 59 // Set correct sprite number.
RichardE 7:e72691603fd3 60 bullet.SpriteNumber = spriteNumber;
RichardE 7:e72691603fd3 61 // Must make it visible because last time bullet was
RichardE 7:e72691603fd3 62 // killed off this property may have been set to false.
RichardE 7:e72691603fd3 63 bullet.Visible = true;
RichardE 7:e72691603fd3 64 // Similarly hit points may already be at zero.
RichardE 7:e72691603fd3 65 // If you don't do this then bullet hit points gets decremented to -1 (0xFF)
RichardE 7:e72691603fd3 66 // and it becomes indestructible.
RichardE 7:e72691603fd3 67 bullet.HitPoints = 1;
RichardE 7:e72691603fd3 68 // Calculate bullet velocities.
RichardE 7:e72691603fd3 69 // Aim for a point somewhere in the vicinity of the chase object.
RichardE 7:e72691603fd3 70 if( chaseObject != (GameObject*)NULL ) {
RichardE 7:e72691603fd3 71 UInt16 targetX = chaseObject->Xco + (Int16)Random::Get( -128, +128 );
RichardE 7:e72691603fd3 72 UInt16 targetY = chaseObject->Yco + (Int16)Random::Get( -128, +128 );
RichardE 7:e72691603fd3 73 BulletVelocityCalculator::CalculateVelocities(
RichardE 7:e72691603fd3 74 targetX - Xco, targetY - Yco,
RichardE 7:e72691603fd3 75 80, &bullet.HVelocity, &bullet.VVelocity
RichardE 7:e72691603fd3 76 );
RichardE 7:e72691603fd3 77 }
RichardE 7:e72691603fd3 78 return •
RichardE 7:e72691603fd3 79 }
RichardE 7:e72691603fd3 80
RichardE 7:e72691603fd3 81 /************************/
RichardE 7:e72691603fd3 82 /* MOVE THE GAME OBJECT */
RichardE 7:e72691603fd3 83 /************************/
RichardE 7:e72691603fd3 84 void BrainObject::ProtectedMove( void ) {
RichardE 7:e72691603fd3 85 UInt8 humanIndex, newBulletIndex;
RichardE 7:e72691603fd3 86 BrainBulletObject *newBullet;
RichardE 7:e72691603fd3 87 // Make sure you have some humans to chase.
RichardE 7:e72691603fd3 88 // Locate the nearest human.
RichardE 7:e72691603fd3 89 if(
RichardE 7:e72691603fd3 90 ( HumansToChase != (GameObject**)NULL ) &&
RichardE 7:e72691603fd3 91 GameObject::FindNearestObject( HumansToChase, LevelData::MaxHumans, Xco, Yco, &ValidHuman, &humanIndex )
RichardE 7:e72691603fd3 92 ) {
RichardE 7:e72691603fd3 93 // Move towards target human.
RichardE 7:e72691603fd3 94 GameObject *human = HumansToChase[ humanIndex ];
RichardE 7:e72691603fd3 95 MoveTowards( human, BrainSpeed );
RichardE 7:e72691603fd3 96 }
RichardE 7:e72691603fd3 97 // If no humans to chase then chase chaseObject instead (player).
RichardE 7:e72691603fd3 98 else if( chaseObject != (GameObject*)NULL ) {
RichardE 7:e72691603fd3 99 MoveTowards( chaseObject, BrainSpeed );
RichardE 7:e72691603fd3 100 }
RichardE 7:e72691603fd3 101 // Skip next bit if enemies have not been specified.
RichardE 7:e72691603fd3 102 if( Enemies != (GameObject**)NULL ) {
RichardE 7:e72691603fd3 103 // Check if bullet was active but has now gone away.
RichardE 7:e72691603fd3 104 if( bulletActive && ( Enemies[ bulletIndex ] == (GameObject*)NULL ) ) {
RichardE 7:e72691603fd3 105 bulletActive = false;
RichardE 7:e72691603fd3 106 }
RichardE 7:e72691603fd3 107 // See if a new bullet should be started.
RichardE 7:e72691603fd3 108 if(
RichardE 7:e72691603fd3 109 ! bulletActive && ( Random::Get( 40 ) == 0 ) &&
RichardE 7:e72691603fd3 110 GameObject::FindUnusedObject( Enemies, LevelData::MaxEnemies, &newBulletIndex ) &&
RichardE 7:e72691603fd3 111 ( ( newBullet = StartBullet( FirstEnemySprite + newBulletIndex ) ) != (BrainBulletObject*)NULL )
RichardE 7:e72691603fd3 112 ) {
RichardE 7:e72691603fd3 113 Enemies[ newBulletIndex ] = newBullet;
RichardE 7:e72691603fd3 114 bulletIndex = newBulletIndex;
RichardE 7:e72691603fd3 115 bulletActive = true;
RichardE 7:e72691603fd3 116 }
RichardE 7:e72691603fd3 117 }
RichardE 7:e72691603fd3 118 }
RichardE 7:e72691603fd3 119
RichardE 7:e72691603fd3 120 /************************/
RichardE 7:e72691603fd3 121 /* DRAW THE GAME OBJECT */
RichardE 7:e72691603fd3 122 /************************/
RichardE 7:e72691603fd3 123 // This is only called after it has been established that the
RichardE 7:e72691603fd3 124 // game object is visible.
RichardE 7:e72691603fd3 125 void BrainObject::Draw( Gameduino *gd ) {
RichardE 7:e72691603fd3 126 Gameduino::Rotation transform = ( FrameCounter & 8 ) ? Gameduino::FlipX : Gameduino::None;
RichardE 7:e72691603fd3 127 gd->sprite( SpriteNumber, ToPixel( Xco ), ToPixel( Yco ), BrainImage, 0, transform, BadGuy );
RichardE 7:e72691603fd3 128 }