diff options
Diffstat (limited to 'core/src/ch/asynk')
| -rw-r--r-- | core/src/ch/asynk/tankontank/engine/SearchBoard.java | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/core/src/ch/asynk/tankontank/engine/SearchBoard.java b/core/src/ch/asynk/tankontank/engine/SearchBoard.java index 583c2c8..57e75cf 100644 --- a/core/src/ch/asynk/tankontank/engine/SearchBoard.java +++ b/core/src/ch/asynk/tankontank/engine/SearchBoard.java @@ -317,8 +317,11 @@ public class SearchBoard Math.abs(dx); } } + if (dx == 0) return verticalLineOfSight(x0, y0, x1, y1, check); + if (dx == (3 * dy)) + return diagonalLineOfSight(x0, y0, x1, y1, check); int dx3 = 3 * dx; int dy3 = 3 * dy; @@ -327,7 +330,6 @@ public class SearchBoard int y = y0; int e = -2 * dx; - boolean vert = (dx == 0); boolean flat = (dx > (3 * dy)); boolean diag = (dx == (3 * dy)); @@ -385,4 +387,34 @@ public class SearchBoard return los; } + + private List<Node> diagonalLineOfSight(int x0, int y0, int x1, int y1, boolean check) + { + int dy = ( (y1 > y0) ? 1 : -1); + int dx = ( (x1 > x0) ? 1 : -1); + boolean sig = !(((dx < 0) && (dy >= 0)) || ((dx >= 0) && (dy < 0))); + + int x = x0; + int y = y0; + + Tile t = null; + los.add(getNode(x, y)); + while((x != x1) || (y != y1)) { + x += dx; + t = board.getTile(x, y); + if (!t.isOffMap()) los.add(getNode(x, y)); + + y += dy; + if (!sig) + x -= dx; + t = board.getTile(x, y); + if (!t.isOffMap()) los.add(getNode(x, y)); + + x += dx; + t = board.getTile(x, y); + if (!t.isOffMap()) los.add(getNode(x, y)); + } + + return los; + } } |