static MapReach canReachTargetCalc(Struct_1D1BC groundTilesMap, Point outPos, Point attacker) /* sub_733F1 */
{
SteppingPath var_31 = new SteppingPath();
SteppingPath var_19 = new SteppingPath();
int max_range = (256 * 2) + 1;
var_19.attacker = attacker;
var_19.target = outPos;
var_19.CalculateDeltas();
var_31.attacker.x = 0;
var_31.attacker.y = gbl.BackGroundTiles[groundTilesMap[attacker]].field_1;
if (var_19.diff_x > var_19.diff_y)
{
var_31.target.x = var_19.diff_x;
}
else
{
var_31.target.x = var_19.diff_y;
}
var_31.target.y = gbl.BackGroundTiles[groundTilesMap[attacker]].field_1;
var_31.CalculateDeltas();
bool finished = false;
do
{
int gt = groundTilesMap[var_19.current];
Struct_189B4 s189 = gbl.BackGroundTiles[gt];
if (groundTilesMap.ignoreWalls == false && s189.field_2 > var_31.current.y)
{
return(new MapReach(false, var_19.steps, var_19.current));
}
// range is for cache hard coded to 256, thus max_range = 513, so skip this.
if (var_19.steps > max_range)
{
return(new MapReach(false, var_19.steps, var_19.current));
}
var_31.Step();
finished = !var_19.Step();
} while (finished == false);
return(new MapReach(true, var_19.steps, outPos));
}
internal static void draw_missile_attack(int delay, int frameCount, Point target, Point attacker) /* sub_67AA4 */
{
Point center;
bool var_B4;
bool var_B3;
SteppingPath path = new SteppingPath();
byte[] pathDir = new byte[0x94];
seg051.FillChar(8, 0x94, pathDir);
int var_AF = 0;
int frame = 0;
path.attacker = attacker * 3;
path.target = target * 3;
path.CalculateDeltas();
do
{
var_B4 = !path.Step();
pathDir[var_AF] = path.direction;
var_AF++;
} while (var_B4 == false);
int var_B0 = var_AF - 2;
if (var_B0 < 2 || var_AF < 2)
{
return;
}
var diff = target - attacker;
if (ovr033.CoordOnScreen(attacker - gbl.mapToBackGroundTile.mapScreenTopLeft) == false ||
ovr033.CoordOnScreen(target - gbl.mapToBackGroundTile.mapScreenTopLeft) == false)
{
if (System.Math.Abs(diff.x) <= 6 &&
System.Math.Abs(diff.y) <= 6)
{
var_B3 = true;
center = (diff / 2) + attacker;
}
else
{
var_B3 = false;
center = gbl.mapToBackGroundTile.mapScreenTopLeft + Point.ScreenCenter;
}
}
else
{
var_B3 = true;
center = gbl.mapToBackGroundTile.mapScreenTopLeft + Point.ScreenCenter;
}
ovr033.redrawCombatArea(8, 0xFF, center);
var_AF = 0;
Point delta = new Point(0, 0);
do
{
Point cur = ((attacker - gbl.mapToBackGroundTile.mapScreenTopLeft) * 3) + delta;
var_B4 = false;
do
{
Point var_C6 = gbl.MapDirectionDelta[pathDir[var_AF]];
cur += var_C6;
if (delay > 0 ||
(cur.x % 3) == 0 ||
(cur.y % 3) == 0)
{
Display.SaveVidRam();
seg040.OverlayBounded(gbl.missile_dax, 5, frame, cur.y, cur.x);
seg040.DrawOverlay();
seg049.SysDelay(delay);
Display.RestoreVidRam();
frame++;
if (frame >= frameCount)
{
frame = 0;
}
}
var_AF++;
if (cur.x < 0 || cur.x > 0x12 || cur.y < 0 || cur.y > 0x12)
{
var_B4 = true;
}
if (var_B4 == false &&
var_AF < var_B0)
{
delta += var_C6;
if (Math.Abs(delta.x) == 3)
{
attacker.x += Math.Sign(delta.x);
center.x += Math.Sign(delta.x);
delta.x = 0;
}
if (Math.Abs(delta.y) == 3)
{
attacker.y += Math.Sign(delta.y);
center.y += Math.Sign(delta.y);
delta.y = 0;
}
}
} while (var_AF < var_B0 && var_B4 == false);
if (var_AF < var_B0)
{
int var_CE = 0;
int var_D0 = 0;
delta = new Point(0, 0);
attacker = target;
if ((target.x + Point.ScreenHalfX) > Point.MapMaxX)
{
var_CE = target.x - Point.MapMaxX;
}
else if (target.x < Point.ScreenHalfX)
{
var_CE = Point.ScreenHalfX - target.x;
}
if ((target.y + Point.ScreenHalfY) > Point.MapMaxY)
{
var_D0 = target.y - Point.MapMaxY;
}
else if (target.y < Point.ScreenHalfY)
{
var_D0 = Point.ScreenHalfY - target.y;
}
center.x = target.x + var_CE;
center.y = target.y + var_D0;
ovr033.redrawCombatArea(8, 0xff, center);
cur = (target - gbl.mapToBackGroundTile.mapScreenTopLeft) * 3;
var_AF = var_B0;
var_B4 = false;
do
{
Point var_C6 = new Point(0, 0) - gbl.MapDirectionDelta[pathDir[var_AF]];
cur += var_C6;
if (cur.x > 18)
{
attacker.x = gbl.mapToBackGroundTile.mapScreenTopLeft.x + Point.ScreenMaxX;
}
else if (cur.x < 0)
{
attacker.x = gbl.mapToBackGroundTile.mapScreenTopLeft.x;
}
if (cur.y > 18)
{
attacker.y = gbl.mapToBackGroundTile.mapScreenTopLeft.y + Point.ScreenMaxY;
}
else if (cur.y < 0)
{
attacker.y = gbl.mapToBackGroundTile.mapScreenTopLeft.y;
}
if (cur.x < 0 || cur.x > 18 || cur.y < 0 || cur.y > 18)
{
var_B4 = true;
}
if (var_B4 == false)
{
delta += var_C6;
if (System.Math.Abs(delta.x) == Point.ScreenHalfX)
{
attacker.x += Math.Sign(delta.x);
center.x += Math.Sign(delta.x);
delta.x = 0;
}
if (System.Math.Abs(delta.y) == Point.ScreenHalfY)
{
attacker.y += Math.Sign(delta.y);
center.y += Math.Sign(delta.y);
delta.y = 0;
}
var_AF -= 1;
}
} while (var_B4 == false);
}
else
{
var_B3 = true;
if (ovr033.CoordOnScreen(target - gbl.mapToBackGroundTile.mapScreenTopLeft) == false)
{
ovr033.redrawCombatArea(8, 3, target);
}
cur = (target - gbl.mapToBackGroundTile.mapScreenTopLeft) * 3;
Display.SaveVidRam();
seg040.OverlayBounded(gbl.missile_dax, 5, frame, cur.y, cur.x);
if (delay > 0)
{
seg040.DrawOverlay();
seg049.SysDelay(delay);
Display.RestoreVidRam();
}
}
} while (var_B3 == false);
seg040.DrawOverlay();
}
