diff options
| -rw-r--r-- | scene/2d/collision_polygon_2d.cpp | 55 |
1 files changed, 40 insertions, 15 deletions
diff --git a/scene/2d/collision_polygon_2d.cpp b/scene/2d/collision_polygon_2d.cpp index 39d7705226..38198c496e 100644 --- a/scene/2d/collision_polygon_2d.cpp +++ b/scene/2d/collision_polygon_2d.cpp @@ -41,13 +41,13 @@ void CollisionPolygon2D::_build_polygon() { parent->shape_owner_clear_shapes(owner_id); - if (polygon.size() == 0) { - return; - } - bool solids = build_mode == BUILD_SOLIDS; if (solids) { + if (polygon.size() < 3) { + return; + } + //here comes the sun, lalalala //decompose concave into multiple convex polygons and add them Vector<Vector<Vector2>> decomp = _decompose_in_convex(); @@ -58,6 +58,10 @@ void CollisionPolygon2D::_build_polygon() { } } else { + if (polygon.size() < 2) { + return; + } + Ref<ConcavePolygonShape2D> concave = memnew(ConcavePolygonShape2D); Vector<Vector2> segments; @@ -132,25 +136,28 @@ void CollisionPolygon2D::_notification(int p_what) { break; } - for (int i = 0; i < polygon.size(); i++) { + int polygon_count = polygon.size(); + for (int i = 0; i < polygon_count; i++) { Vector2 p = polygon[i]; - Vector2 n = polygon[(i + 1) % polygon.size()]; + Vector2 n = polygon[(i + 1) % polygon_count]; // draw line with width <= 1, so it does not scale with zoom and break pixel exact editing draw_line(p, n, Color(0.9, 0.2, 0.0, 0.8), 1); } + + if (polygon_count > 2) { #define DEBUG_DECOMPOSE #if defined(TOOLS_ENABLED) && defined(DEBUG_DECOMPOSE) + Vector<Vector<Vector2>> decomp = _decompose_in_convex(); - Vector<Vector<Vector2>> decomp = _decompose_in_convex(); - - Color c(0.4, 0.9, 0.1); - for (int i = 0; i < decomp.size(); i++) { - c.set_hsv(Math::fmod(c.get_h() + 0.738, 1), c.get_s(), c.get_v(), 0.5); - draw_colored_polygon(decomp[i], c); - } + Color c(0.4, 0.9, 0.1); + for (int i = 0; i < decomp.size(); i++) { + c.set_hsv(Math::fmod(c.get_h() + 0.738, 1), c.get_s(), c.get_v(), 0.5); + draw_colored_polygon(decomp[i], c); + } #else - draw_colored_polygon(polygon, get_tree()->get_debug_collisions_color()); + draw_colored_polygon(polygon, get_tree()->get_debug_collisions_color()); #endif + } if (one_way_collision) { Color dcol = get_tree()->get_debug_collisions_color(); //0.9,0.2,0.2,0.4); @@ -211,6 +218,8 @@ void CollisionPolygon2D::set_build_mode(BuildMode p_mode) { _build_polygon(); _update_in_shape_owner(); } + update(); + update_configuration_warning(); } CollisionPolygon2D::BuildMode CollisionPolygon2D::get_build_mode() const { @@ -241,11 +250,27 @@ String CollisionPolygon2D::get_configuration_warning() const { warning += TTR("CollisionPolygon2D only serves to provide a collision shape to a CollisionObject2D derived node. Please only use it as a child of Area2D, StaticBody2D, RigidBody2D, KinematicBody2D, etc. to give them a shape."); } - if (polygon.is_empty()) { + int polygon_count = polygon.size(); + if (polygon_count == 0) { if (!warning.is_empty()) { warning += "\n\n"; } warning += TTR("An empty CollisionPolygon2D has no effect on collision."); + } else { + bool solids = build_mode == BUILD_SOLIDS; + if (solids) { + if (polygon_count < 3) { + if (!warning.is_empty()) { + warning += "\n\n"; + } + warning += TTR("Invalid polygon. At least 3 points are needed in 'Solids' build mode."); + } + } else if (polygon_count < 2) { + if (!warning.is_empty()) { + warning += "\n\n"; + } + warning += TTR("Invalid polygon. At least 2 points are needed in 'Segments' build mode."); + } } return warning; |