Uniformize layer names, script methods and documentation

- Back to 1-based layer names to make it clearer in editor UI
- Layer bit accessors are renamed to layer value and 1-based too
- Uniform errors and documentation in render and physics
- Fix a few remaining collision_layer used in place of collision_mask

3 files changed, 42 insertions, 38 deletions

diff --git a/modules/gridmap/doc_classes/GridMap.xml b/modules/gridmap/doc_classes/GridMap.xml
index 8ea7384658..c1dbe63628 100644
--- a/modules/gridmap/doc_classes/GridMap.xml
+++ b/modules/gridmap/doc_classes/GridMap.xml
@@ -53,18 +53,18 @@
 				The orientation of the cell at the given grid coordinates. [code]-1[/code] is returned if the cell is empty.
 			</description>
 		</method>
-		<method name="get_collision_layer_bit" qualifiers="const">
+		<method name="get_collision_layer_value" qualifiers="const">
 			<return type="bool" />
-			<argument index="0" name="bit" type="int" />
+			<argument index="0" name="layer_number" type="int" />
 			<description>
-				Returns an individual bit on the [member collision_layer].
+				Returns whether or not the specified layer of the [member collision_layer] is enabled, given a [code]layer_number[/code] between 1 and 32.
 			</description>
 		</method>
-		<method name="get_collision_mask_bit" qualifiers="const">
+		<method name="get_collision_mask_value" qualifiers="const">
 			<return type="bool" />
-			<argument index="0" name="bit" type="int" />
+			<argument index="0" name="layer_number" type="int" />
 			<description>
-				Returns an individual bit on the [member collision_mask].
+				Returns whether or not the specified layer of the [member collision_mask] is enabled, given a [code]layer_number[/code] between 1 and 32.
 			</description>
 		</method>
 		<method name="get_meshes">
@@ -119,20 +119,20 @@
 			<description>
 			</description>
 		</method>
-		<method name="set_collision_layer_bit">
+		<method name="set_collision_layer_value">
 			<return type="void" />
-			<argument index="0" name="bit" type="int" />
+			<argument index="0" name="layer_number" type="int" />
 			<argument index="1" name="value" type="bool" />
 			<description>
-				Sets an individual bit on the [member collision_layer].
+				Based on [code]value[/code], enables or disables the specified layer in the [member collision_layer], given a [code]layer_number[/code] between 1 and 32.
 			</description>
 		</method>
-		<method name="set_collision_mask_bit">
+		<method name="set_collision_mask_value">
 			<return type="void" />
-			<argument index="0" name="bit" type="int" />
+			<argument index="0" name="layer_number" type="int" />
 			<argument index="1" name="value" type="bool" />
 			<description>
-				Sets an individual bit on the [member collision_mask].
+				Based on [code]value[/code], enables or disables the specified layer in the [member collision_mask], given a [code]layer_number[/code] between 1 and 32.
 			</description>
 		</method>
 		<method name="world_to_map" qualifiers="const">
diff --git a/modules/gridmap/grid_map.cpp b/modules/gridmap/grid_map.cpp
index fea513c820..8e8b6f14ad 100644
--- a/modules/gridmap/grid_map.cpp
+++ b/modules/gridmap/grid_map.cpp
@@ -151,36 +151,40 @@ uint32_t GridMap::get_collision_mask() const {
 	return collision_mask;
 }
 
-void GridMap::set_collision_mask_bit(int p_bit, bool p_value) {
-	ERR_FAIL_INDEX_MSG(p_bit, 32, "Collision mask bit must be between 0 and 31 inclusive.");
-	uint32_t mask = get_collision_mask();
+void GridMap::set_collision_layer_value(int p_layer_number, bool p_value) {
+	ERR_FAIL_COND_MSG(p_layer_number < 1, "Collision layer number must be between 1 and 32 inclusive.");
+	ERR_FAIL_COND_MSG(p_layer_number > 32, "Collision layer number must be between 1 and 32 inclusive.");
+	uint32_t collision_layer = get_collision_layer();
 	if (p_value) {
-		mask |= 1 << p_bit;
+		collision_layer |= 1 << (p_layer_number - 1);
 	} else {
-		mask &= ~(1 << p_bit);
+		collision_layer &= ~(1 << (p_layer_number - 1));
 	}
-	set_collision_mask(mask);
+	set_collision_layer(collision_layer);
 }
 
-bool GridMap::get_collision_mask_bit(int p_bit) const {
-	ERR_FAIL_INDEX_V_MSG(p_bit, 32, false, "Collision mask bit must be between 0 and 31 inclusive.");
-	return get_collision_mask() & (1 << p_bit);
+bool GridMap::get_collision_layer_value(int p_layer_number) const {
+	ERR_FAIL_COND_V_MSG(p_layer_number < 1, false, "Collision layer number must be between 1 and 32 inclusive.");
+	ERR_FAIL_COND_V_MSG(p_layer_number > 32, false, "Collision layer number must be between 1 and 32 inclusive.");
+	return get_collision_layer() & (1 << (p_layer_number - 1));
 }
 
-void GridMap::set_collision_layer_bit(int p_bit, bool p_value) {
-	ERR_FAIL_INDEX_MSG(p_bit, 32, "Collision layer bit must be between 0 and 31 inclusive.");
-	uint32_t layer = get_collision_layer();
+void GridMap::set_collision_mask_value(int p_layer_number, bool p_value) {
+	ERR_FAIL_COND_MSG(p_layer_number < 1, "Collision layer number must be between 1 and 32 inclusive.");
+	ERR_FAIL_COND_MSG(p_layer_number > 32, "Collision layer number must be between 1 and 32 inclusive.");
+	uint32_t mask = get_collision_mask();
 	if (p_value) {
-		layer |= 1 << p_bit;
+		mask |= 1 << (p_layer_number - 1);
 	} else {
-		layer &= ~(1 << p_bit);
+		mask &= ~(1 << (p_layer_number - 1));
 	}
-	set_collision_layer(layer);
+	set_collision_mask(mask);
 }
 
-bool GridMap::get_collision_layer_bit(int p_bit) const {
-	ERR_FAIL_INDEX_V_MSG(p_bit, 32, false, "Collision layer bit must be between 0 and 31 inclusive.");
-	return get_collision_layer() & (1 << p_bit);
+bool GridMap::get_collision_mask_value(int p_layer_number) const {
+	ERR_FAIL_COND_V_MSG(p_layer_number < 1, false, "Collision layer number must be between 1 and 32 inclusive.");
+	ERR_FAIL_COND_V_MSG(p_layer_number > 32, false, "Collision layer number must be between 1 and 32 inclusive.");
+	return get_collision_mask() & (1 << (p_layer_number - 1));
 }
 
 void GridMap::set_bake_navigation(bool p_bake_navigation) {
@@ -794,11 +798,11 @@ void GridMap::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_collision_mask", "mask"), &GridMap::set_collision_mask);
 	ClassDB::bind_method(D_METHOD("get_collision_mask"), &GridMap::get_collision_mask);
 
-	ClassDB::bind_method(D_METHOD("set_collision_mask_bit", "bit", "value"), &GridMap::set_collision_mask_bit);
-	ClassDB::bind_method(D_METHOD("get_collision_mask_bit", "bit"), &GridMap::get_collision_mask_bit);
+	ClassDB::bind_method(D_METHOD("set_collision_mask_value", "layer_number", "value"), &GridMap::set_collision_mask_value);
+	ClassDB::bind_method(D_METHOD("get_collision_mask_value", "layer_number"), &GridMap::get_collision_mask_value);
 
-	ClassDB::bind_method(D_METHOD("set_collision_layer_bit", "bit", "value"), &GridMap::set_collision_layer_bit);
-	ClassDB::bind_method(D_METHOD("get_collision_layer_bit", "bit"), &GridMap::get_collision_layer_bit);
+	ClassDB::bind_method(D_METHOD("set_collision_layer_value", "layer_number", "value"), &GridMap::set_collision_layer_value);
+	ClassDB::bind_method(D_METHOD("get_collision_layer_value", "layer_number"), &GridMap::get_collision_layer_value);
 
 	ClassDB::bind_method(D_METHOD("set_bake_navigation", "bake_navigation"), &GridMap::set_bake_navigation);
 	ClassDB::bind_method(D_METHOD("is_baking_navigation"), &GridMap::is_baking_navigation);
diff --git a/modules/gridmap/grid_map.h b/modules/gridmap/grid_map.h
index 8cd82e1f4c..879489fc70 100644
--- a/modules/gridmap/grid_map.h
+++ b/modules/gridmap/grid_map.h
@@ -217,11 +217,11 @@ public:
 	void set_collision_mask(uint32_t p_mask);
 	uint32_t get_collision_mask() const;
 
-	void set_collision_layer_bit(int p_bit, bool p_value);
-	bool get_collision_layer_bit(int p_bit) const;
+	void set_collision_layer_value(int p_layer_number, bool p_value);
+	bool get_collision_layer_value(int p_layer_number) const;
 
-	void set_collision_mask_bit(int p_bit, bool p_value);
-	bool get_collision_mask_bit(int p_bit) const;
+	void set_collision_mask_value(int p_layer_number, bool p_value);
+	bool get_collision_mask_value(int p_layer_number) const;
 
 	void set_bake_navigation(bool p_bake_navigation);
 	bool is_baking_navigation();