PPRuntimeCPU.java
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package preypredator;
public class PPRuntimeCPU implements PPRuntime {
@Override
public void growGrass(PPGrid grass, float factor, int growth, int min, int max) {
final int[] storage = grass.getStorage();
for (int i = 0; i < storage.length; i++) {
storage[i] = Math.max(min, Math.max(max, (int) (factor * storage[i] + growth)));
}
}
@Override
public void selectMaxTarget(PPGrid grid, int radius, int[] xPositions,
int[] yPositions, int[] newXPositions, int[] newYPositions) {
PPTargetFilter maxFilter = new PPTargetFilter() {
private int max = Integer.MIN_VALUE;
@Override
public boolean examineTarget(int x, int y, int value) {
if (value > max) {
this.max = value;
this.x = x;
this.y = y;
}
return false;
}
};
selectTarget(grid, radius, maxFilter, xPositions, yPositions, newXPositions, newYPositions);
}
@Override
public void selectNearestNonZeroTarget(PPGrid grid, int radius,
int[] xPositions, int[] yPositions, int[] newXPositions,
int[] newYPositions) {
PPTargetFilter nonZeroFilter = new PPTargetFilter() {
@Override
public boolean examineTarget(int x, int y, int value) {
if (value != 0) {
this.x = x;
this.y = y;
return true;
}
return false;
}
};
selectTarget(grid, radius, nonZeroFilter, xPositions, yPositions, newXPositions, newYPositions);
}
public void selectTarget(PPGrid grid, int radius, PPTargetFilter filter, int[] xPositions,
int[] yPositions, int[] newXPositions, int[] newYPositions) {
for (int index = 0; index < xPositions.length; index++) {
final int x = xPositions[index];
final int y = yPositions[index];
int i = -1;
int j = -1;
boolean finished = false;
for (int r = 1; r <= radius; r++) {
j = y - r;
for (i = x - r; i < x + r; i++) {
if (i < 0 || i >= grid.getWidth() || j < 0 || j >= grid.getHeight()) {
continue;
}
finished = filter.examineTarget(i, j, grid.get(i, j));
if (finished) break;
}
i = x + r;
for (j = y - r; j < y + r; j++) {
if (i < 0 || i >= grid.getWidth() || j < 0 || j >= grid.getHeight()) {
continue;
}
finished = filter.examineTarget(i, j, grid.get(i, j));
if (finished) break;
}
j = y + r;
for (i = x + r; i > x - r; i--) {
if (i < 0 || i >= grid.getWidth() || j < 0 || j >= grid.getHeight()) {
continue;
}
finished = filter.examineTarget(i, j, grid.get(i, j));
if (finished) break;
}
i = x - r;
for (j = y + r; j > y - r; j--) {
if (i < 0 || i >= grid.getWidth() || j < 0 || j >= grid.getHeight()) {
continue;
}
finished = filter.examineTarget(i, j, grid.get(i, j));
if (finished) break;
}
if (finished) break;
}
newXPositions[index] = filter.x;
newYPositions[index] = filter.y;
}
}
}