Class AgiKart

java.lang.Object

java.awt.Component

java.awt.Container

javax.swing.JComponent

javax.swing.JPanel

uno.anahata.asi.swing.games.AgiKart

All Implemented Interfaces:

ActionListener, ImageObserver, MenuContainer, Serializable, EventListener, Accessible

public class AgiKart
extends JPanel
implements ActionListener

AgiKart is a high-performance pseudo-3D retro kart racing game in Java Swing.

Utilizing a Mode 7 style perspective ground projection algorithm, depth-sorted 3D billboard rendering for sprites (trees, item boxes, karts, and obstacles), responsive drift-and-slide kart physics, and waypoint-following AI opponents, it provides a highly polished, authentic classic 16-bit racing experience. It also features procedural audio synthesis using Java's built-in MIDI Synthesizer.

Author:

anahata

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	AgiKart.ItemBox	Data object model for spawning item boxes.
private static class	AgiKart.KartEntity	Data object model for tracking karts.
private static class	AgiKart.Particle	World particle model for drift sparks and boost trails.
private static class	AgiKart.PineTree	Data object model for placing Pine Trees.
private static class	AgiKart.PlacedBanana	Data object model for banana slip obstacles.
private static interface	AgiKart.SpriteDrawable	Functional Interface defining custom sprite-drawing instructions.
private static class	AgiKart.SpriteProjection	DTO containing projected coordinates and scales for drawing billboarded entities.
private static class	AgiKart.ThrownShell	Data object model for traveling tracking shells.
private static class	AgiKart.TrackMushroom	Data object model for spawning collectible mushrooms on the track.

Nested classes/interfaces inherited from class JPanel

JPanel.AccessibleJPanel

Nested classes/interfaces inherited from class JComponent

JComponent.AccessibleJComponent

Nested classes/interfaces inherited from class Container

Container.AccessibleAWTContainer

Nested classes/interfaces inherited from class Component

Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy

Field Summary

Fields

Modifier and Type	Field	Description
private final List<AgiKart.PlacedBanana>	bananas	List of bananas placed on the track.
private double	bestLapTime
private final double	cameraHeight	Height of the camera above the ground plane.
private int	countdownFrames	The starting countdown timer frames.
private long	currentLapStartTime
private MidiChannel	engineChannel	Continuous MIDI channel for engine humming sound.
private boolean	finalLapWarningPlayed	Warning triggered when the player enters the final lap.
private double	fov	Field of View perspective scaling factor.
private boolean	gameOver	Flag indicating if the player has finished all laps.
private int	gameTicks	Global frame tick counter.
private final int	horizon	Horizon row index on the low-res screen buffer.
private static final double[][]	ITEM_BOX_LOCATIONS	Center coordinates for item box spawners.
private final List<AgiKart.ItemBox>	itemBoxes	List of active item boxes in the world.
private boolean	keyDown	Braking / Reverse flag.
private boolean	keyLeft	Steering flag (turning left).
private boolean	keyRight	Steering flag (turning right).
private boolean	keyUp	Acceleration flag.
private double	lastLapTime
private MidiChannel	midiChannel	The main MIDI channel for lead synthesizers.
private static final double[][]	OIL_SLICKS	Coordinates for stationary roadside Oil Slicks that trigger spinouts.
private final List<AgiKart.KartEntity>	opponents	The list of AI competitor entities.
private final List<AgiKart.Particle>	particles
private AgiKart.KartEntity	player	The human player entity.
private boolean	raceStarted	Flag indicating if the race has started (after countdown).
private long	raceStartTime
private static final int	SCREEN_HEIGHT	The logical screen height for the Mode 7 low-res rendering buffer.
private static final int	SCREEN_WIDTH	The logical screen width for the Mode 7 low-res rendering buffer.
private BufferedImage	screenBuffer	Low-resolution rendering canvas.
private int[]	screenPixels	Direct pointer to the low-resolution canvas pixels.
private int	screenShake	Camera screen shake intensity timer.
private final List<AgiKart.ThrownShell>	shells	List of active red shells traveling on the track.
private int	shootCooldown	Direct blaster shell fire cooldown.
private final ExecutorService	soundPool	Single-threaded pool for non-blocking procedural sound playbacks.
private Synthesizer	synth	MIDI Synthesizer interface.
private Timer	timer	High-frequency game loop timer.
private static final double[][]	TRACK_POINTS	Coordinates representing the center loop of the race track.
private final List<AgiKart.TrackMushroom>	trackMushrooms	List of active roadside collectible Super Mushrooms.
private int[]	trackPixels	Direct pointer to the track texture map pixels.
private BufferedImage	trackTexture	High-resolution, off-screen track texture map.
private final List<AgiKart.PineTree>	trees	List of static tree coordinates placed alongside the road borders.
private static final int	WINDOW_HEIGHT	The actual display height of the game window.
private static final int	WINDOW_WIDTH	The actual display width of the game window.

Fields inherited from class JComponent

listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW

Fields inherited from class Component

accessibleContext, BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

Constructors

Constructor	Description
AgiKart()	Constructs a new AgiKart game panel and triggers resources initialization.

Method Summary

Modifier and Type	Method	Description
void	actionPerformed(ActionEvent e)
private int	calculatePlayerPosition()	Calculates the player's real-time position rank compared to other karts.
private void	checkBumpingCollisions()	Calculates bumping/colliding bouncing interactions between karts.
private void	checkItemOverlaps()	Evaluates item pickup boxes and obstacle collisions on the track.
void	cleanup()	Shuts down background threads and releases MIDI Synthesizer resources.
private void	drawItemBox(Graphics2D g, double sx, double sy, double scale)	Vector draws a hovering, glowing item box spawner.
private void	drawItemIcon(Graphics2D g, int cx, int cy, int size, String itemType)	Vector draws stunning retro-quality HUD item icons.
private void	drawPineTree(Graphics2D g, double sx, double sy, double scale)	Vector draws a beautiful pine tree billboard sprite.
private void	drawPlacedBanana(Graphics2D g, double sx, double sy, double scale)	Vector draws a placed banana peel on the road.
private void	drawThrownShell(Graphics2D g, double sx, double sy, double scale)	Vector draws a traveling homing red shell on the road.
private void	drawTrackMushroom(Graphics2D g, double sx, double sy, double scale)	Vector draws a gorgeous 3D billboard mushroom standing on the ground.
private void	drawWorldKart(Graphics2D g, double sx, double sy, double scale, Color color, String name, double angle, int spinTimer)	Vector draws a gorgeous detailed kart competitor with chassis, wheels, driver, and nametag.
private void	generateTrackTexture()	Generates a beautiful 1024x1024 track texture procedurally in memory.
private void	initControls()	Binds keyboard controls to manage player movement and item triggers.
private void	initEnvironment()	Programmatically populates environment details, including curbside pine trees and item boxes.
private void	initKarts()	Initializes karts, setting up a starting grid behind the start-finish line.
private void	initSound()	Initializes the Java MIDI Synthesizer and configures instrument patching.
static void	main(String[] args)	Standalone executable entry-point.
protected void	paintComponent(Graphics g)
private void	playBarsaAnthem()	Plays an 8-bit retro melodic fanfare of the classic Barça Anthem.
private void	playBoostSound()	Plays a sweeping pitch sound during a mushroom boost.
private void	playCrashSound()	Plays a descending pitch sound when a kart spins out.
private void	playFinalLapSound()	Plays a high-intensity warning fanfare when entering the final lap.
private void	playItemPickupSound()	Plays a high-pitched ding sound when picking up items.
private void	playLapCompletedSound()	Plays a grand championship lap completed fanfare.
private void	playNoteAsync(int note, int velocity, int durationMs)	Dispatches a musical note command asynchronously to prevent blocking the game thread.
private AgiKart.SpriteProjection	projectWorldPoint(double wx, double wy, double wz, double camX, double camY, double cos, double sin)	Projects a 3D world coordinate onto the low-resolution screen canvas relative to the camera.
private void	render3DSprites(Graphics2D g)	Gathers, depth-sorts, and draws all 3D projected billboard sprites on the screen.
private void	renderBackgroundSceneries(Graphics2D g)	Renders background mountain sceneries scrolling smoothly as the player turns.
private void	renderHUD(Graphics2D g)	Renders a highly-polished high-resolution HUD, featuring real-time minimaps and race positions.
private void	renderMode7()	Implements a fast, hardware-friendly Mode 7 ground perspective floor caster.
private void	resetGame()	Resets the entire race standings and parameters to begin anew.
private void	shootGreenShellDirect()	Fires a green shell directly in front of the player's kart with a cooldown.
private void	sortCompetitors(List<AgiKart.KartEntity> list)	Sorts the racing competitors based on lap counts and next waypoint progress.
private void	triggerAIItem(AgiKart.KartEntity ai)	Executes AI item activation decisions based on current item held.
private void	triggerPlayerItem()	Triggers the player's active item and manages world placements.
private void	updateAICompetitor(AgiKart.KartEntity ai)	Updates an AI competitor's intelligence, steering vectors, and waypoint progress.
private void	updateHomingShells()	Updates active traveling red shells on track checkpoints towards targets.
private void	updateKartWaypoint(AgiKart.KartEntity kart)	Updates waypoints checklist and lap completions for karts.
private void	updatePlayerPhysics()	Updates the player's kart speed, angles, drift sliding, and coordinate bounds.

Methods inherited from class JPanel

getAccessibleContext, getUI, getUIClassID, paramString, setUI, updateUI

Methods inherited from class JComponent

addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBaseline, getBaselineResizeBehavior, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPopupLocation, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, hide, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingOrigin, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update

Methods inherited from class Container

add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusDownCycle, validate, validateTree

Methods inherited from class Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setMixingCutoutShape, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

SCREEN_WIDTH

private static final int SCREEN_WIDTH

The logical screen width for the Mode 7 low-res rendering buffer.

See Also:

• Constant Field Values

SCREEN_HEIGHT

private static final int SCREEN_HEIGHT

The logical screen height for the Mode 7 low-res rendering buffer.

See Also:

• Constant Field Values

WINDOW_WIDTH

private static final int WINDOW_WIDTH

The actual display width of the game window.

See Also:

• Constant Field Values

WINDOW_HEIGHT

private static final int WINDOW_HEIGHT

The actual display height of the game window.

See Also:

• Constant Field Values

TRACK_POINTS

private static final double[][] TRACK_POINTS

Coordinates representing the center loop of the race track.

ITEM_BOX_LOCATIONS

private static final double[][] ITEM_BOX_LOCATIONS

Center coordinates for item box spawners.

trees

private final List<AgiKart.PineTree> trees

List of static tree coordinates placed alongside the road borders.

itemBoxes

private final List<AgiKart.ItemBox> itemBoxes

List of active item boxes in the world.

bananas

private final List<AgiKart.PlacedBanana> bananas

List of bananas placed on the track.

shells

private final List<AgiKart.ThrownShell> shells

List of active red shells traveling on the track.

trackMushrooms

private final List<AgiKart.TrackMushroom> trackMushrooms

List of active roadside collectible Super Mushrooms.

player

private AgiKart.KartEntity player

The human player entity.

opponents

private final List<AgiKart.KartEntity> opponents

The list of AI competitor entities.

cameraHeight

private final double cameraHeight

Height of the camera above the ground plane.

See Also:

• Constant Field Values

fov

private double fov

Field of View perspective scaling factor.

horizon

private final int horizon

Horizon row index on the low-res screen buffer.

See Also:

• Constant Field Values

screenBuffer

private BufferedImage screenBuffer

Low-resolution rendering canvas.

screenPixels

private int[] screenPixels

Direct pointer to the low-resolution canvas pixels.

trackTexture

private BufferedImage trackTexture

High-resolution, off-screen track texture map.

trackPixels

private int[] trackPixels

Direct pointer to the track texture map pixels.

timer

private Timer timer

High-frequency game loop timer.

keyLeft

private boolean keyLeft

Steering flag (turning left).

keyRight

private boolean keyRight

Steering flag (turning right).

keyUp

private boolean keyUp

Acceleration flag.

keyDown

private boolean keyDown

Braking / Reverse flag.

raceStarted

private boolean raceStarted

Flag indicating if the race has started (after countdown).

countdownFrames

private int countdownFrames

The starting countdown timer frames.

gameOver

private boolean gameOver

Flag indicating if the player has finished all laps.

gameTicks

private int gameTicks

Global frame tick counter.

shootCooldown

private int shootCooldown

Direct blaster shell fire cooldown.

finalLapWarningPlayed

private boolean finalLapWarningPlayed

Warning triggered when the player enters the final lap.

screenShake

private int screenShake

Camera screen shake intensity timer.

OIL_SLICKS

private static final double[][] OIL_SLICKS

Coordinates for stationary roadside Oil Slicks that trigger spinouts.

soundPool

private final ExecutorService soundPool

Single-threaded pool for non-blocking procedural sound playbacks.

synth

private Synthesizer synth

MIDI Synthesizer interface.

midiChannel

private MidiChannel midiChannel

The main MIDI channel for lead synthesizers.

engineChannel

private MidiChannel engineChannel

Continuous MIDI channel for engine humming sound.

raceStartTime

private long raceStartTime

currentLapStartTime

private long currentLapStartTime

bestLapTime

private double bestLapTime

lastLapTime

private double lastLapTime

particles

private final List<AgiKart.Particle> particles

Constructor Details

AgiKart

public AgiKart()

Constructs a new AgiKart game panel and triggers resources initialization.

Method Details

playNoteAsync

private void playNoteAsync(int note,
 int velocity,
 int durationMs)

Dispatches a musical note command asynchronously to prevent blocking the game thread.

playItemPickupSound

private void playItemPickupSound()

Plays a high-pitched ding sound when picking up items.

playBoostSound

private void playBoostSound()

Plays a sweeping pitch sound during a mushroom boost.

playCrashSound

private void playCrashSound()

Plays a descending pitch sound when a kart spins out.

playFinalLapSound

private void playFinalLapSound()

Plays a high-intensity warning fanfare when entering the final lap.

playLapCompletedSound

private void playLapCompletedSound()

Plays a grand championship lap completed fanfare.

initSound

private void initSound()

Initializes the Java MIDI Synthesizer and configures instrument patching.

generateTrackTexture

private void generateTrackTexture()

Generates a beautiful 1024x1024 track texture procedurally in memory.

Renders a forest green background grid, draws a custom winding race course, overlays red-and-white striped curb borders, and stamps a checkered finish line.

initEnvironment

private void initEnvironment()

Programmatically populates environment details, including curbside pine trees and item boxes.

initKarts

private void initKarts()

Initializes karts, setting up a starting grid behind the start-finish line.

initControls

private void initControls()

Binds keyboard controls to manage player movement and item triggers.

triggerPlayerItem

private void triggerPlayerItem()

Triggers the player's active item and manages world placements.

shootGreenShellDirect

private void shootGreenShellDirect()

Fires a green shell directly in front of the player's kart with a cooldown.

resetGame

private void resetGame()

Resets the entire race standings and parameters to begin anew.

cleanup

public void cleanup()

Shuts down background threads and releases MIDI Synthesizer resources.

paintComponent

protected void paintComponent(Graphics g)

Processes the 3D projection, depth-sorted blitting, and HUD rendering overlays.

Overrides:

paintComponent in class JComponent

renderMode7

private void renderMode7()

Implements a fast, hardware-friendly Mode 7 ground perspective floor caster.

renderBackgroundSceneries

private void renderBackgroundSceneries(Graphics2D g)

Renders background mountain sceneries scrolling smoothly as the player turns.

render3DSprites

private void render3DSprites(Graphics2D g)

Gathers, depth-sorts, and draws all 3D projected billboard sprites on the screen.

projectWorldPoint

private AgiKart.SpriteProjection projectWorldPoint(double wx,
 double wy,
 double wz,
 double camX,
 double camY,
 double cos,
 double sin)

Projects a 3D world coordinate onto the low-resolution screen canvas relative to the camera.

drawPineTree

private void drawPineTree(Graphics2D g,
 double sx,
 double sy,
 double scale)

Vector draws a beautiful pine tree billboard sprite.

drawItemBox

private void drawItemBox(Graphics2D g,
 double sx,
 double sy,
 double scale)

Vector draws a hovering, glowing item box spawner.

drawPlacedBanana

private void drawPlacedBanana(Graphics2D g,
 double sx,
 double sy,
 double scale)

Vector draws a placed banana peel on the road.

drawTrackMushroom

private void drawTrackMushroom(Graphics2D g,
 double sx,
 double sy,
 double scale)

Vector draws a gorgeous 3D billboard mushroom standing on the ground.

drawThrownShell

private void drawThrownShell(Graphics2D g,
 double sx,
 double sy,
 double scale)

Vector draws a traveling homing red shell on the road.

drawWorldKart

private void drawWorldKart(Graphics2D g,
 double sx,
 double sy,
 double scale,
 Color color,
 String name,
 double angle,
 int spinTimer)

Vector draws a gorgeous detailed kart competitor with chassis, wheels, driver, and nametag.

renderHUD

private void renderHUD(Graphics2D g)

Renders a highly-polished high-resolution HUD, featuring real-time minimaps and race positions.

drawItemIcon

private void drawItemIcon(Graphics2D g,
 int cx,
 int cy,
 int size,
 String itemType)

Vector draws stunning retro-quality HUD item icons.

calculatePlayerPosition

private int calculatePlayerPosition()

Calculates the player's real-time position rank compared to other karts.

sortCompetitors

private void sortCompetitors(List<AgiKart.KartEntity> list)

Sorts the racing competitors based on lap counts and next waypoint progress.

actionPerformed

public void actionPerformed(ActionEvent e)

Executes the primary high-frequency physics tick, collisions, and state transitions.

Specified by:

actionPerformed in interface ActionListener

updatePlayerPhysics

private void updatePlayerPhysics()

Updates the player's kart speed, angles, drift sliding, and coordinate bounds.

updateAICompetitor

private void updateAICompetitor(AgiKart.KartEntity ai)

Updates an AI competitor's intelligence, steering vectors, and waypoint progress.

triggerAIItem

private void triggerAIItem(AgiKart.KartEntity ai)

Executes AI item activation decisions based on current item held.

updateKartWaypoint

private void updateKartWaypoint(AgiKart.KartEntity kart)

Updates waypoints checklist and lap completions for karts.

updateHomingShells

private void updateHomingShells()

Updates active traveling red shells on track checkpoints towards targets.

checkBumpingCollisions

private void checkBumpingCollisions()

Calculates bumping/colliding bouncing interactions between karts.

checkItemOverlaps

private void checkItemOverlaps()

Evaluates item pickup boxes and obstacle collisions on the track.

main

public static void main(String[] args)

Standalone executable entry-point.

playBarsaAnthem

private void playBarsaAnthem()

Plays an 8-bit retro melodic fanfare of the classic Barça Anthem.