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Add a fill_region method to the AStarGrid2D #79495

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Aug 4, 2023
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Add a fill_region method to the AStarGrid2D #79495

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34 changes: 34 additions & 0 deletions core/math/a_star_grid_2d.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -194,6 +194,38 @@ real_t AStarGrid2D::get_point_weight_scale(const Vector2i &p_id) const {
return GET_POINT_UNCHECKED(p_id).weight_scale;
}

void AStarGrid2D::fill_solid_region(const Rect2i &p_region, bool p_solid) {
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ERR_FAIL_COND_MSG(dirty, "Grid is not initialized. Call the update method.");

Rect2i safe_region = p_region.intersection(region);
int from_x = safe_region.get_position().x;
int from_y = safe_region.get_position().y;
int end_x = safe_region.get_end().x;
int end_y = safe_region.get_end().y;

for (int x = from_x; x < end_x; x++) {
for (int y = from_y; y < end_y; y++) {
GET_POINT_UNCHECKED(Vector2i(x, y)).solid = p_solid;
}
}
}

void AStarGrid2D::fill_weight_scale_region(const Rect2i &p_region, real_t p_weight_scale) {
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ERR_FAIL_COND_MSG(dirty, "Grid is not initialized. Call the update method.");
ERR_FAIL_COND_MSG(p_weight_scale < 0.0, vformat("Can't set point's weight scale less than 0.0: %f.", p_weight_scale));

Rect2i safe_region = p_region.intersection(region);
int from_x = safe_region.get_position().x;
int from_y = safe_region.get_position().y;
int end_x = safe_region.get_end().x;
int end_y = safe_region.get_end().y;
for (int x = from_x; x < end_x; x++) {
for (int y = from_y; y < end_y; y++) {
GET_POINT_UNCHECKED(Vector2i(x, y)).weight_scale = p_weight_scale;
}
}
}

AStarGrid2D::Point *AStarGrid2D::_jump(Point *p_from, Point *p_to) {
if (!p_to || p_to->solid) {
return nullptr;
Expand Down Expand Up @@ -606,6 +638,8 @@ void AStarGrid2D::_bind_methods() {
ClassDB::bind_method(D_METHOD("is_point_solid", "id"), &AStarGrid2D::is_point_solid);
ClassDB::bind_method(D_METHOD("set_point_weight_scale", "id", "weight_scale"), &AStarGrid2D::set_point_weight_scale);
ClassDB::bind_method(D_METHOD("get_point_weight_scale", "id"), &AStarGrid2D::get_point_weight_scale);
ClassDB::bind_method(D_METHOD("fill_solid_region", "region", "solid"), &AStarGrid2D::fill_solid_region, DEFVAL(true));
ClassDB::bind_method(D_METHOD("fill_weight_scale_region", "region", "weight_scale"), &AStarGrid2D::fill_weight_scale_region);
ClassDB::bind_method(D_METHOD("clear"), &AStarGrid2D::clear);

ClassDB::bind_method(D_METHOD("get_point_position", "id"), &AStarGrid2D::get_point_position);
Expand Down
3 changes: 3 additions & 0 deletions core/math/a_star_grid_2d.h
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Expand Up @@ -177,6 +177,9 @@ class AStarGrid2D : public RefCounted {
void set_point_weight_scale(const Vector2i &p_id, real_t p_weight_scale);
real_t get_point_weight_scale(const Vector2i &p_id) const;

void fill_solid_region(const Rect2i &p_region, bool p_solid = true);
void fill_weight_scale_region(const Rect2i &p_region, real_t p_weight_scale);

void clear();

Vector2 get_point_position(const Vector2i &p_id) const;
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18 changes: 18 additions & 0 deletions doc/classes/AStarGrid2D.xml
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Expand Up @@ -53,6 +53,24 @@
Clears the grid and sets the [member region] to [code]Rect2i(0, 0, 0, 0)[/code].
</description>
</method>
<method name="fill_solid_region">
<return type="void" />
<param index="0" name="region" type="Rect2i" />
<param index="1" name="solid" type="bool" default="true" />
<description>
Fills the given [param region] on the grid with the specified value for the solid flag.
[b]Note:[/b] Calling [method update] is not needed after the call of this function.
</description>
</method>
<method name="fill_weight_scale_region">
<return type="void" />
<param index="0" name="region" type="Rect2i" />
<param index="1" name="weight_scale" type="float" />
<description>
Fills the given [param region] on the grid with the specified value for the weight scale.
[b]Note:[/b] Calling [method update] is not needed after the call of this function.
</description>
</method>
<method name="get_id_path">
<return type="Vector2i[]" />
<param index="0" name="from_id" type="Vector2i" />
Expand Down
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