@Override
public void renderTileLayer(TiledMapTileLayer layer) {
final Color batchColor = batch.getColor();
final float color =
Color.toFloatBits(
batchColor.r, batchColor.g, batchColor.b, batchColor.a * layer.getOpacity());
final int layerWidth = layer.getWidth();
final int layerHeight = layer.getHeight();
final float layerTileWidth = layer.getTileWidth() * unitScale;
final float layerTileHeight = layer.getTileHeight() * unitScale;
final float layerTileWidth50 = layerTileWidth * 0.50f;
final float layerTileHeight50 = layerTileHeight * 0.50f;
final int minX = Math.max(0, (int) (((viewBounds.x - layerTileWidth50) / layerTileWidth)));
final int maxX =
Math.min(
layerWidth,
(int)
((viewBounds.x + viewBounds.width + layerTileWidth + layerTileWidth50)
/ layerTileWidth));
final int minY = Math.max(0, (int) (((viewBounds.y - layerTileHeight) / layerTileHeight)));
final int maxY =
Math.min(
layerHeight,
(int) ((viewBounds.y + viewBounds.height + layerTileHeight) / layerTileHeight50));
for (int y = maxY - 1; y >= minY; y--) {
float offsetX = (y % 2 == 1) ? layerTileWidth50 : 0;
for (int x = maxX - 1; x >= minX; x--) {
final TiledMapTileLayer.Cell cell = layer.getCell(x, y);
if (cell == null) continue;
final TiledMapTile tile = cell.getTile();
if (tile != null) {
final boolean flipX = cell.getFlipHorizontally();
final boolean flipY = cell.getFlipVertically();
final int rotations = cell.getRotation();
TextureRegion region = tile.getTextureRegion();
float x1 = x * layerTileWidth - offsetX + tile.getOffsetX() * unitScale;
float y1 = y * layerTileHeight50 + tile.getOffsetY() * unitScale;
float x2 = x1 + region.getRegionWidth() * unitScale;
float y2 = y1 + region.getRegionHeight() * unitScale;
float u1 = region.getU();
float v1 = region.getV2();
float u2 = region.getU2();
float v2 = region.getV();
vertices[X1] = x1;
vertices[Y1] = y1;
vertices[C1] = color;
vertices[U1] = u1;
vertices[V1] = v1;
vertices[X2] = x1;
vertices[Y2] = y2;
vertices[C2] = color;
vertices[U2] = u1;
vertices[V2] = v2;
vertices[X3] = x2;
vertices[Y3] = y2;
vertices[C3] = color;
vertices[U3] = u2;
vertices[V3] = v2;
vertices[X4] = x2;
vertices[Y4] = y1;
vertices[C4] = color;
vertices[U4] = u2;
vertices[V4] = v1;
if (flipX) {
float temp = vertices[U1];
vertices[U1] = vertices[U3];
vertices[U3] = temp;
temp = vertices[U2];
vertices[U2] = vertices[U4];
vertices[U4] = temp;
}
if (flipY) {
float temp = vertices[V1];
vertices[V1] = vertices[V3];
vertices[V3] = temp;
temp = vertices[V2];
vertices[V2] = vertices[V4];
vertices[V4] = temp;
}
if (rotations != 0) {
switch (rotations) {
case Cell.ROTATE_90:
{
float tempV = vertices[V1];
vertices[V1] = vertices[V2];
vertices[V2] = vertices[V3];
vertices[V3] = vertices[V4];
vertices[V4] = tempV;
float tempU = vertices[U1];
vertices[U1] = vertices[U2];
vertices[U2] = vertices[U3];
vertices[U3] = vertices[U4];
vertices[U4] = tempU;
break;
}
case Cell.ROTATE_180:
{
float tempU = vertices[U1];
vertices[U1] = vertices[U3];
vertices[U3] = tempU;
tempU = vertices[U2];
vertices[U2] = vertices[U4];
vertices[U4] = tempU;
float tempV = vertices[V1];
vertices[V1] = vertices[V3];
vertices[V3] = tempV;
tempV = vertices[V2];
vertices[V2] = vertices[V4];
vertices[V4] = tempV;
break;
}
case Cell.ROTATE_270:
{
float tempV = vertices[V1];
vertices[V1] = vertices[V4];
vertices[V4] = vertices[V3];
vertices[V3] = vertices[V2];
vertices[V2] = tempV;
float tempU = vertices[U1];
vertices[U1] = vertices[U4];
vertices[U4] = vertices[U3];
vertices[U3] = vertices[U2];
vertices[U2] = tempU;
break;
}
}
}
batch.draw(region.getTexture(), vertices, 0, 20);
}
}
}
}
