/**
* Create a new BackgroundPainter. The tiles used for painting will be cut non-uniformly, so that
* the grid will be placed according to the given dimensions.
*
* @param image image name
* @param leftWidth width of the left tile row
* @param centerWidth width of the center tile row
* @param topHeight height of the top tile row
* @param centerHeight height of the center tile row
*/
public BackgroundPainter(
String image, int leftWidth, int centerWidth, int topHeight, int centerHeight) {
tileWidth = 0;
tileHeight = 0;
SpriteStore store = SpriteStore.get();
Sprite mother = store.getSprite(image);
images = new Sprite[9];
int[] widths = new int[3];
widths[0] = leftWidth;
widths[1] = centerWidth;
widths[2] = mother.getWidth() - leftWidth - centerWidth;
int[] heights = new int[3];
heights[0] = topHeight;
heights[1] = centerHeight;
heights[2] = mother.getHeight() - topHeight - centerHeight;
int x = 0;
int y = 0;
int i = 0;
for (int yInd = 0; yInd < 3; yInd++) {
for (int xInd = 0; xInd < 3; xInd++) {
images[i] = store.getTile(mother, x, y, widths[xInd], heights[yInd]);
x += widths[xInd];
i++;
}
x = 0;
y += heights[yInd];
}
}
/**
* Create a new BackgroundPainter.
*
* @param image image name. The image dimensions should be multiples of 3. The tiles used for
* painting will be the image divided uniformly to three in both vertical and horizontal
* directions
*/
public BackgroundPainter(String image) {
SpriteStore store = SpriteStore.get();
Sprite mother = store.getSprite(image);
this.tileWidth = mother.getWidth() / 3;
this.tileHeight = mother.getHeight() / 3;
images = new Sprite[9];
int i = 0;
for (int y = 0; y < 3 * tileHeight; y += tileHeight) {
for (int x = 0; x < 3 * tileWidth; x += tileWidth) {
images[i] = store.getTile(mother, x, y, tileWidth, tileHeight);
i++;
}
}
}
/**
* Paint an area with the image pattern.
*
* @param g graphics
* @param width width of the painted area
* @param height height of the painted area
*/
public void paint(Graphics g, int width, int height) {
// Paint the center part. That covers the whole area
Sprite centerSprite = images[4];
int centerWidth = centerSprite.getWidth();
int centerHeight = centerSprite.getHeight();
for (int y = 0; y < height; y += centerHeight) {
for (int x = 0; x < width; x += centerWidth) {
centerSprite.draw(g, x, y);
}
}
// Sides
// Some needed dimensions (and sprites)
Sprite rightSprite = images[5];
int rightWidth = rightSprite.getWidth();
Sprite leftSprite = images[3];
int leftWidth = leftSprite.getHeight();
Sprite topSprite = images[1];
int topHeight = topSprite.getHeight();
Sprite bottomSprite = images[7];
int bottomHeight = bottomSprite.getHeight();
// Top row.
for (int x = leftWidth; x < width - rightWidth; x += centerWidth) {
topSprite.draw(g, x, 0);
}
// left side
for (int y = topHeight; y < height - bottomHeight; y += centerHeight) {
leftSprite.draw(g, 0, y);
}
/*
* The rest of the sides will not tile properly, but the background
* pattern is subtle enough that it will not be immediately noticeable.
*/
// right side
// Do not draw over the left side, but let the image overflow from the
// right if there's no space
int rightX = Math.max(width - rightWidth, leftWidth);
for (int y = topHeight; y < height - bottomHeight; y += centerHeight) {
rightSprite.draw(g, rightX, y);
}
// bottom
// Do not draw over the top border, but let the scroll overflow from the
// bottom if there's no space
int bottomY = Math.max(height - bottomHeight, topHeight);
for (int x = centerWidth; x < width - centerWidth; x += centerWidth) {
bottomSprite.draw(g, x, bottomY);
}
// Corners. Again, only the first one will tile properly
// Top left corner
Sprite sprite = images[0];
sprite.draw(g, 0, 0);
// Top right corner
sprite = images[2];
sprite.draw(g, rightX, 0);
// Bottom left corner
sprite = images[6];
sprite.draw(g, 0, bottomY);
// Bottom right corner
sprite = images[8];
sprite.draw(g, rightX, bottomY);
}