public void changeLevel(Level lev) {
if (level != null) { // If the level exists...
layerStack.remove(
level); // remove it from the layer stack (stops it being rendered, updated, and recieving
// key events)
level = lev; // Set level to the new level we wish to change to
level.add(player); // Add the player to the new level
level.setPlayerLocation(); // Set the location to the levels chosen location
addLayer(
level); // Add the new level into the layerstack for updating, rendering and receiving key
// events
}
}
private void init(State state) {
if (state == State.GAME) { // If the state is ingame...
level = Level.createLevel(0); // Load the spawn level (level 0)
TileCoordinate playerSpawn =
new TileCoordinate(
15,
60); // Create player coodinates. This class creates coordinates from pixels and
// converts it to tile coordinates (16 pixels -> 1 tile)
String playerName = ""; // Initiate the players name
if (FileHandler.fileExists(FileHandler.localUserFile))
playerName =
FileHandler
.getPlayerName(); // If the player already exists, set the players name to the
// stored name
else
playerName =
sc
.getPlayerName(); // Otherwise retrieve the name from the start screen that the user
// has typed into the name box
player =
new Player(
playerName,
playerSpawn.x(),
playerSpawn.y(),
key); // Create a new player. Pass in the name, spawn location (in tile coordinates),
// and the keyboard class.
changeLevel(
Level
.activeLevel); // Set the level to the current level (0, as we set that in the
// beginning)
FileHandler.save(player); // Save everything
initPause = false; // Set pause to false, just in case it is true
c.clearTextArea(); // Clear the console
System.out.println(
"Controls: \n W/up -> Player up \n A/left -> Player left \n S/down -> Player down \n D/right -> Player right \n "
+ "Q -> Inventory \n Shift -> Sprint \n HOME -> home level \n M -> Map \n numbers 1-6 -> Weapons"); // Output the controls so the user can see what to do
} else if (state == State.START) { // If the state is the start screen...
sc = new StartScreen(); // Initiate the start screen
uiManager.addPanel(
sc); // Add the startscreen to the UI manager, which will render and update it
} else if (state == State.PAUSE) { // If the state is in pause...
pause = new Pause(); // Instantiate a new pause menu
uiManager.addPanel(
pause); // Add the pause menu to the UI manager, ready for rendering and updating
initPause = true; // Tell the game we have created a pause menu (prevent more than 1 opening)
paused = true; // Tell the game we are paused
}
STATE =
State
.WAITING; // Once the correct state is set up, set the state wo WAITING, which tells the
// game we are waiting for the state to change.
}
public void render() {
BufferStrategy bs =
getBufferStrategy(); // Create a buffer strategy (a way of drawing pixels to the image)
if (bs == null) { // If it is null...
createBufferStrategy(
3); // Create a buffer strategy. Set it up for 3D as it has a more recise pixel resolution
// and more control
return; // Exit the method
}
screen.clear(); // Clear the screen every render, ready for re-drawing
Graphics g =
bs.getDrawGraphics(); // Get the buffer strategy's default graphics object, used for drawing
this.g = g; // Set the global graphics variable to the one we just fetched
if (STATE != State.WAITING) { // If the game state isn't waiting...
List<UIPanel> panels =
uiManager.getPanels(); // Get the list of panels that are currently being drawn
for (int i = 0; i < panels.size(); i++) { // For each one...
uiManager.removePanel(panels.get(i)); // remove it.
}
}
init(
STATE); // Call initiate state to set up the game for if the state has changed during
// rendering.
if (player != null) { // If the player exists...
double xScroll = player.getX() - screen.width / 2; // Set the x scroll variable of the map
double yScroll = player.getY() - screen.height / 2; // Set the y scroll variable of the map
level.setScroll((int) xScroll, (int) yScroll); // Tell the level these values
}
// Loop through the stacks, rendering each layer
for (int i = 0; i < layerStack.size(); i++) {
layerStack.get(i).render(screen);
}
// Set the pixels in this class to all the pixels stored in the screen class, ready for
// rendering to the BufferedImage
for (int i = 0; i < pixels.length; i++) {
pixels[i] = screen.pixels[i];
}
g.setColor(
new Color(
0xff00ff)); // Set the background to a bright pink, so we know if anything isn't
// rendering correctly
g.fillRect(0, 0, getWidth(), getHeight()); // Draw the rectangle to fill thr screen
/* scale the image's size to fill the window, scaling the objects inside to also fit. This ensures the game will scale depending on
* scree resolution
*/
int newWidth = 0, newHeight = 0;
if (image.getWidth() / image.getHeight() < getAbsoluteWidth() / getAbsoluteHeight()) {
newWidth = getAbsoluteWidth();
newHeight =
(int)
Math.floor(
(double) image.getHeight()
* (double) getAbsoluteWidth()
/ (double) image.getWidth());
} else {
newHeight = getAbsoluteHeight();
newWidth =
(int)
Math.floor(
(double) image.getWidth()
* (double) getAbsoluteHeight()
/ (double) image.getHeight());
}
g.drawImage(
image, 0, 0, newWidth, newHeight,
null); // Draw the image over the rectangle, filling the window
// Loop through the stacks, rendering each layer. Do the UI as the last thing to render, as it
// is on top of everything else
for (int i = 0; i < UILayerStack.size(); i++) {
UILayerStack.get(i).render(g);
}
g.dispose(); // Dispose of the graphics object as we no longer need it
bs.show(); // Show the buffer strategy in the canvas
}