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fix index in FindBeachCells and bug on initialization #10

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fix index in FindBeachCells and bug on initialization #10

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8 changes: 3 additions & 5 deletions cem/cem.c
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Original file line number Diff line number Diff line change
Expand Up @@ -574,17 +574,15 @@ void FindBeachCells(int YStart)
if (debug1) printf("FirstX: %3d FirstY: %3d z: 0 \n", X[0], Y[0]);

z = 0;
X[z - 1] = X[z];
Y[z - 1] = Y[z] - 1;

while ((Y[z] < 2 * Y_MAX - 1) && (z < MaxBeachLength - 1)) {
z++;
NextX = -2;
NextY = -2;
BehindX = -2;
BehindY = -2;

FindNextCell(X[z - 1], Y[z - 1], z - 1);
FindNextCell(X[z], Y[z], z);
z++;
X[z] = NextX;
Y[z] = NextY;
XBehind[z] = BehindX;
Expand Down Expand Up @@ -733,7 +731,7 @@ void FindNextCell(int x, int y, int z)
{
return;
}
if ((X[z - 1] == X[z]) && (Y[z - 1] == Y[z] - 1))
if (z == 0 ||(X[z - 1] == X[z]) && (Y[z - 1] == Y[z] - 1))
/* came from left */
{
if ((PercentFullSand[x + 1][y] + PercentFullRock[x + 1][y]) > 0.0) {
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2 changes: 1 addition & 1 deletion cem/conditions.c
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Expand Up @@ -126,7 +126,7 @@ void InitBeach(double **percent_full_sand, double **percent_full_rock, char **al

int ocean_start = INIT_BEACH + 1;
/* Fill in first row of ocean */
percent_full_rock[beach_start][col] = 0.0;
percent_full_rock[ocean_start][col] = 0.0;
percent_full_sand[ocean_start][col] = 0.0;
all_rock[ocean_start][col] = 'n';
all_beach[ocean_start][col] = 'n';
Expand Down