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

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

Committer:
RichardE
Date:
Sat Jun 08 16:44:54 2013 +0000
Revision:
7:e72691603fd3
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 : Walker.cpp
RichardE 7:e72691603fd3 3 *
RichardE 7:e72691603fd3 4 * Methods for objects that walk sideways on (like humans and crushers).
RichardE 7:e72691603fd3 5 *
RichardE 7:e72691603fd3 6 */
RichardE 7:e72691603fd3 7
RichardE 7:e72691603fd3 8 #include "Gameduino.h" // Gameduino stuff
RichardE 7:e72691603fd3 9 #include "GDConst.h"
RichardE 7:e72691603fd3 10 #include "Walker.h"
RichardE 7:e72691603fd3 11 #include "Random.h"
RichardE 7:e72691603fd3 12
RichardE 7:e72691603fd3 13 /*************************************************/
RichardE 7:e72691603fd3 14 /* INITIALISE HORIZONTAL AND VERTICAL VELOCITIES */
RichardE 7:e72691603fd3 15 /*************************************************/
RichardE 7:e72691603fd3 16 // Pass pointers to horizontal and vertical velocities in hv and vv.
RichardE 7:e72691603fd3 17 void Walker::InitialiseVelocities( Int16 *hv, Int16 *vv ) {
RichardE 7:e72691603fd3 18 // Initialise horizontal and vertical speeds.
RichardE 7:e72691603fd3 19 UInt8 rnd = Random::Get( 4 );
RichardE 7:e72691603fd3 20 *hv = GameObject::FromPixel( 1 ) >> 2;
RichardE 7:e72691603fd3 21 if( rnd & 1 ) {
RichardE 7:e72691603fd3 22 *hv = -(*hv);
RichardE 7:e72691603fd3 23 }
RichardE 7:e72691603fd3 24 *vv = GameObject::FromPixel( 1 ) >> 4;
RichardE 7:e72691603fd3 25 if( rnd & 2 ) {
RichardE 7:e72691603fd3 26 *vv = -(*vv);
RichardE 7:e72691603fd3 27 }
RichardE 7:e72691603fd3 28 }
RichardE 7:e72691603fd3 29
RichardE 7:e72691603fd3 30 /*********************************************************/
RichardE 7:e72691603fd3 31 /* UPDATE COORDINATES AND VELOCITIES TO MAKE OBJECT WALK */
RichardE 7:e72691603fd3 32 /*********************************************************/
RichardE 7:e72691603fd3 33 // Pass pointers to x and y coordinates in x and y.
RichardE 7:e72691603fd3 34 // Pass pointers to horizontal and vertical velocities in hv and vv.
RichardE 7:e72691603fd3 35 // Pass restriction flags (as defined in GameObject.h) in restriction Flags.
RichardE 7:e72691603fd3 36 void Walker::Walk( Int16 *x, Int16 *y, Int16 *hv, Int16 *vv, UInt8 restrictionFlags ) {
RichardE 7:e72691603fd3 37 // Make object bounce of edges of restriction area.
RichardE 7:e72691603fd3 38 if( restrictionFlags & (UInt8)( GameObject::LeftRestriction | GameObject::RightRestriction ) ) {
RichardE 7:e72691603fd3 39 *hv = -(*hv);
RichardE 7:e72691603fd3 40 }
RichardE 7:e72691603fd3 41 if( restrictionFlags & (UInt8)( GameObject::UpRestriction | GameObject::DownRestriction ) ) {
RichardE 7:e72691603fd3 42 *vv = -(*vv);
RichardE 7:e72691603fd3 43 }
RichardE 7:e72691603fd3 44 *x += *hv;
RichardE 7:e72691603fd3 45 *y += *vv;
RichardE 7:e72691603fd3 46 }
RichardE 7:e72691603fd3 47
RichardE 7:e72691603fd3 48 /*************************/
RichardE 7:e72691603fd3 49 /* DRAW A WALKING OBJECT */
RichardE 7:e72691603fd3 50 /*************************/
RichardE 7:e72691603fd3 51 // Pass pointer to Gameduino to draw on in gd.
RichardE 7:e72691603fd3 52 // Pass sprite number in spriteNumber.
RichardE 7:e72691603fd3 53 // Pass x and y coordinates in x and y (NOT pixel coordinates).
RichardE 7:e72691603fd3 54 // Pass counter used to pace animation in frameCounter.
RichardE 7:e72691603fd3 55 // Pass pointer to animation data (array of AnimationStages sprite image numbers) in animationData.
RichardE 7:e72691603fd3 56 void Walker::Draw( Gameduino *gd, UInt8 spriteNumber, Int16 x, Int16 y, Int16 hv, UInt8 frameCounter, const UInt8 *animationData ) {
RichardE 7:e72691603fd3 57 // Reverse sprite image horizontally if horizontal speed is positive.
RichardE 7:e72691603fd3 58 Gameduino::Rotation transform = ( hv < 0 ) ? Gameduino::None : Gameduino::FlipX;
RichardE 7:e72691603fd3 59 // Image number changes with the frame counter.
RichardE 7:e72691603fd3 60 const UInt8 *address = animationData + frameCounter % AnimationStages;
RichardE 7:e72691603fd3 61 // Update sprite location and image. Note the last parameter is BadGuy so that it is possible
RichardE 7:e72691603fd3 62 // for player to collide with a human. GoodGuy would mean collisions would be ignored.
RichardE 7:e72691603fd3 63 gd->sprite( spriteNumber, GameObject::ToPixel( x ), GameObject::ToPixel( y ), *address, 0, transform, BadGuy );
RichardE 7:e72691603fd3 64 }