mirror of
https://github.com/genxium/DelayNoMore
synced 2025-10-09 00:26:39 +00:00
A broken commit.
This commit is contained in:
yflu
@@ -2,46 +2,45 @@ package dnmshared
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import (
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"math"
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. "dnmshared/protos"
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)
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// Use type `float64` for json unmarshalling of numbers.
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type Direction struct {
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Dx int32 `json:"dx,omitempty"`
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Dy int32 `json:"dy,omitempty"`
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}
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type Vec2D struct {
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X float64 `json:"x,omitempty"`
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Y float64 `json:"y,omitempty"`
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||||
}
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func NormVec2D(dx, dy float64) Vec2D {
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return Vec2D{dy, -dx}
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return Vec2D{X: dy, Y:-dx}
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}
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type Polygon2D struct {
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Anchor *Vec2D `json:"-"` // This "Polygon2D.Anchor" is used to be assigned to "B2BodyDef.Position", which in turn is used as the position of the FIRST POINT of the polygon.
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Points []*Vec2D `json:"-"`
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func AlignPolygon2DToBoundingBox(input *Polygon2D) *Polygon2D {
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// Transform again to put "anchor" at the top-left point of the bounding box for "resolv"
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boundingBoxTL := &Vec2D{
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X: math.MaxFloat64,
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Y: math.MaxFloat64,
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}
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for _, p := range input.Points {
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if p.X < boundingBoxTL.X {
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boundingBoxTL.X = p.X
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}
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if p.Y < boundingBoxTL.Y {
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boundingBoxTL.Y = p.Y
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}
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}
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/*
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When used to represent a "polyline directly drawn in a `Tmx file`", we can initialize both "Anchor" and "Points" simultaneously.
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// Now "input.Anchor" should move to "input.Anchor+boundingBoxTL", thus "boundingBoxTL" is also the value of the negative diff for all "input.Points"
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output := &Polygon2D{
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Anchor: &Vec2D{
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X: input.Anchor.X + boundingBoxTL.X,
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Y: input.Anchor.Y + boundingBoxTL.Y,
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},
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Points: make([]*Vec2D, len(input.Points)),
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}
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Yet when used to represent a "polyline drawn in a `Tsx file`", we have to first initialize "Points w.r.t. center of the tile-rectangle", and then "Anchor(initially nil) of the tile positioned in the `Tmx file`".
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for i, p := range input.Points {
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output.Points[i] = &Vec2D{
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X: p.X - boundingBoxTL.X,
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Y: p.Y - boundingBoxTL.Y,
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}
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}
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Refer to https://shimo.im/docs/SmLJJhXm2C8XMzZT for more information.
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*/
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/*
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[WARNING] Used to cache "`TileWidth & TileHeight` of a Tsx file" only.
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*/
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TileWidth int
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TileHeight int
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/*
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[WARNING] Used to cache "`Width & TileHeight` of an object in Tmx file" only.
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*/
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TmxObjectWidth float64
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TmxObjectHeight float64
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return output
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}
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func Distance(pt1 *Vec2D, pt2 *Vec2D) float64 {
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@@ -1,3 +1,3 @@
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module tiled
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module dnmshared
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go 1.19
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425
dnmshared/protos/geometry.pb.go
Normal file
425
dnmshared/protos/geometry.pb.go
Normal file
@@ -0,0 +1,425 @@
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||||
// Code generated by protoc-gen-go. DO NOT EDIT.
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||||
// versions:
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// protoc-gen-go v1.28.1
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// protoc v3.7.1
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// source: geometry.proto
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package protos
|
||||
|
||||
import (
|
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protoreflect "google.golang.org/protobuf/reflect/protoreflect"
|
||||
protoimpl "google.golang.org/protobuf/runtime/protoimpl"
|
||||
reflect "reflect"
|
||||
sync "sync"
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||||
)
|
||||
|
||||
const (
|
||||
// Verify that this generated code is sufficiently up-to-date.
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||||
_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
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||||
// Verify that runtime/protoimpl is sufficiently up-to-date.
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||||
_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
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||||
)
|
||||
|
||||
type Direction struct {
|
||||
state protoimpl.MessageState
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||||
sizeCache protoimpl.SizeCache
|
||||
unknownFields protoimpl.UnknownFields
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||||
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Dx int32 `protobuf:"varint,1,opt,name=dx,proto3" json:"dx,omitempty"`
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||||
Dy int32 `protobuf:"varint,2,opt,name=dy,proto3" json:"dy,omitempty"`
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||||
}
|
||||
|
||||
func (x *Direction) Reset() {
|
||||
*x = Direction{}
|
||||
if protoimpl.UnsafeEnabled {
|
||||
mi := &file_geometry_proto_msgTypes[0]
|
||||
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
|
||||
ms.StoreMessageInfo(mi)
|
||||
}
|
||||
}
|
||||
|
||||
func (x *Direction) String() string {
|
||||
return protoimpl.X.MessageStringOf(x)
|
||||
}
|
||||
|
||||
func (*Direction) ProtoMessage() {}
|
||||
|
||||
func (x *Direction) ProtoReflect() protoreflect.Message {
|
||||
mi := &file_geometry_proto_msgTypes[0]
|
||||
if protoimpl.UnsafeEnabled && x != nil {
|
||||
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
|
||||
if ms.LoadMessageInfo() == nil {
|
||||
ms.StoreMessageInfo(mi)
|
||||
}
|
||||
return ms
|
||||
}
|
||||
return mi.MessageOf(x)
|
||||
}
|
||||
|
||||
// Deprecated: Use Direction.ProtoReflect.Descriptor instead.
|
||||
func (*Direction) Descriptor() ([]byte, []int) {
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||||
return file_geometry_proto_rawDescGZIP(), []int{0}
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||||
}
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||||
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||||
func (x *Direction) GetDx() int32 {
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||||
if x != nil {
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||||
return x.Dx
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||||
}
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||||
return 0
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||||
}
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||||
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||||
func (x *Direction) GetDy() int32 {
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||||
if x != nil {
|
||||
return x.Dy
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||||
}
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||||
return 0
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||||
}
|
||||
|
||||
type Vec2D struct {
|
||||
state protoimpl.MessageState
|
||||
sizeCache protoimpl.SizeCache
|
||||
unknownFields protoimpl.UnknownFields
|
||||
|
||||
X float64 `protobuf:"fixed64,1,opt,name=x,proto3" json:"x,omitempty"`
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||||
Y float64 `protobuf:"fixed64,2,opt,name=y,proto3" json:"y,omitempty"`
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||||
}
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||||
|
||||
func (x *Vec2D) Reset() {
|
||||
*x = Vec2D{}
|
||||
if protoimpl.UnsafeEnabled {
|
||||
mi := &file_geometry_proto_msgTypes[1]
|
||||
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
|
||||
ms.StoreMessageInfo(mi)
|
||||
}
|
||||
}
|
||||
|
||||
func (x *Vec2D) String() string {
|
||||
return protoimpl.X.MessageStringOf(x)
|
||||
}
|
||||
|
||||
func (*Vec2D) ProtoMessage() {}
|
||||
|
||||
func (x *Vec2D) ProtoReflect() protoreflect.Message {
|
||||
mi := &file_geometry_proto_msgTypes[1]
|
||||
if protoimpl.UnsafeEnabled && x != nil {
|
||||
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
|
||||
if ms.LoadMessageInfo() == nil {
|
||||
ms.StoreMessageInfo(mi)
|
||||
}
|
||||
return ms
|
||||
}
|
||||
return mi.MessageOf(x)
|
||||
}
|
||||
|
||||
// Deprecated: Use Vec2D.ProtoReflect.Descriptor instead.
|
||||
func (*Vec2D) Descriptor() ([]byte, []int) {
|
||||
return file_geometry_proto_rawDescGZIP(), []int{1}
|
||||
}
|
||||
|
||||
func (x *Vec2D) GetX() float64 {
|
||||
if x != nil {
|
||||
return x.X
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||||
}
|
||||
return 0
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||||
}
|
||||
|
||||
func (x *Vec2D) GetY() float64 {
|
||||
if x != nil {
|
||||
return x.Y
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
type Polygon2D struct {
|
||||
state protoimpl.MessageState
|
||||
sizeCache protoimpl.SizeCache
|
||||
unknownFields protoimpl.UnknownFields
|
||||
|
||||
Anchor *Vec2D `protobuf:"bytes,1,opt,name=anchor,proto3" json:"anchor,omitempty"`
|
||||
Points []*Vec2D `protobuf:"bytes,2,rep,name=points,proto3" json:"points,omitempty"`
|
||||
}
|
||||
|
||||
func (x *Polygon2D) Reset() {
|
||||
*x = Polygon2D{}
|
||||
if protoimpl.UnsafeEnabled {
|
||||
mi := &file_geometry_proto_msgTypes[2]
|
||||
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
|
||||
ms.StoreMessageInfo(mi)
|
||||
}
|
||||
}
|
||||
|
||||
func (x *Polygon2D) String() string {
|
||||
return protoimpl.X.MessageStringOf(x)
|
||||
}
|
||||
|
||||
func (*Polygon2D) ProtoMessage() {}
|
||||
|
||||
func (x *Polygon2D) ProtoReflect() protoreflect.Message {
|
||||
mi := &file_geometry_proto_msgTypes[2]
|
||||
if protoimpl.UnsafeEnabled && x != nil {
|
||||
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
|
||||
if ms.LoadMessageInfo() == nil {
|
||||
ms.StoreMessageInfo(mi)
|
||||
}
|
||||
return ms
|
||||
}
|
||||
return mi.MessageOf(x)
|
||||
}
|
||||
|
||||
// Deprecated: Use Polygon2D.ProtoReflect.Descriptor instead.
|
||||
func (*Polygon2D) Descriptor() ([]byte, []int) {
|
||||
return file_geometry_proto_rawDescGZIP(), []int{2}
|
||||
}
|
||||
|
||||
func (x *Polygon2D) GetAnchor() *Vec2D {
|
||||
if x != nil {
|
||||
return x.Anchor
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (x *Polygon2D) GetPoints() []*Vec2D {
|
||||
if x != nil {
|
||||
return x.Points
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
type Vec2DList struct {
|
||||
state protoimpl.MessageState
|
||||
sizeCache protoimpl.SizeCache
|
||||
unknownFields protoimpl.UnknownFields
|
||||
|
||||
Eles []*Vec2D `protobuf:"bytes,1,rep,name=eles,proto3" json:"eles,omitempty"`
|
||||
}
|
||||
|
||||
func (x *Vec2DList) Reset() {
|
||||
*x = Vec2DList{}
|
||||
if protoimpl.UnsafeEnabled {
|
||||
mi := &file_geometry_proto_msgTypes[3]
|
||||
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
|
||||
ms.StoreMessageInfo(mi)
|
||||
}
|
||||
}
|
||||
|
||||
func (x *Vec2DList) String() string {
|
||||
return protoimpl.X.MessageStringOf(x)
|
||||
}
|
||||
|
||||
func (*Vec2DList) ProtoMessage() {}
|
||||
|
||||
func (x *Vec2DList) ProtoReflect() protoreflect.Message {
|
||||
mi := &file_geometry_proto_msgTypes[3]
|
||||
if protoimpl.UnsafeEnabled && x != nil {
|
||||
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
|
||||
if ms.LoadMessageInfo() == nil {
|
||||
ms.StoreMessageInfo(mi)
|
||||
}
|
||||
return ms
|
||||
}
|
||||
return mi.MessageOf(x)
|
||||
}
|
||||
|
||||
// Deprecated: Use Vec2DList.ProtoReflect.Descriptor instead.
|
||||
func (*Vec2DList) Descriptor() ([]byte, []int) {
|
||||
return file_geometry_proto_rawDescGZIP(), []int{3}
|
||||
}
|
||||
|
||||
func (x *Vec2DList) GetEles() []*Vec2D {
|
||||
if x != nil {
|
||||
return x.Eles
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
type Polygon2DList struct {
|
||||
state protoimpl.MessageState
|
||||
sizeCache protoimpl.SizeCache
|
||||
unknownFields protoimpl.UnknownFields
|
||||
|
||||
Eles []*Polygon2D `protobuf:"bytes,1,rep,name=eles,proto3" json:"eles,omitempty"`
|
||||
}
|
||||
|
||||
func (x *Polygon2DList) Reset() {
|
||||
*x = Polygon2DList{}
|
||||
if protoimpl.UnsafeEnabled {
|
||||
mi := &file_geometry_proto_msgTypes[4]
|
||||
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
|
||||
ms.StoreMessageInfo(mi)
|
||||
}
|
||||
}
|
||||
|
||||
func (x *Polygon2DList) String() string {
|
||||
return protoimpl.X.MessageStringOf(x)
|
||||
}
|
||||
|
||||
func (*Polygon2DList) ProtoMessage() {}
|
||||
|
||||
func (x *Polygon2DList) ProtoReflect() protoreflect.Message {
|
||||
mi := &file_geometry_proto_msgTypes[4]
|
||||
if protoimpl.UnsafeEnabled && x != nil {
|
||||
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
|
||||
if ms.LoadMessageInfo() == nil {
|
||||
ms.StoreMessageInfo(mi)
|
||||
}
|
||||
return ms
|
||||
}
|
||||
return mi.MessageOf(x)
|
||||
}
|
||||
|
||||
// Deprecated: Use Polygon2DList.ProtoReflect.Descriptor instead.
|
||||
func (*Polygon2DList) Descriptor() ([]byte, []int) {
|
||||
return file_geometry_proto_rawDescGZIP(), []int{4}
|
||||
}
|
||||
|
||||
func (x *Polygon2DList) GetEles() []*Polygon2D {
|
||||
if x != nil {
|
||||
return x.Eles
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
var File_geometry_proto protoreflect.FileDescriptor
|
||||
|
||||
var file_geometry_proto_rawDesc = []byte{
|
||||
0x0a, 0x0e, 0x67, 0x65, 0x6f, 0x6d, 0x65, 0x74, 0x72, 0x79, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f,
|
||||
0x12, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x73, 0x22, 0x2b, 0x0a, 0x09, 0x44, 0x69, 0x72, 0x65,
|
||||
0x63, 0x74, 0x69, 0x6f, 0x6e, 0x12, 0x0e, 0x0a, 0x02, 0x64, 0x78, 0x18, 0x01, 0x20, 0x01, 0x28,
|
||||
0x05, 0x52, 0x02, 0x64, 0x78, 0x12, 0x0e, 0x0a, 0x02, 0x64, 0x79, 0x18, 0x02, 0x20, 0x01, 0x28,
|
||||
0x05, 0x52, 0x02, 0x64, 0x79, 0x22, 0x23, 0x0a, 0x05, 0x56, 0x65, 0x63, 0x32, 0x44, 0x12, 0x0c,
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
0x2e, 0x56, 0x65, 0x63, 0x32, 0x44, 0x52, 0x06, 0x61, 0x6e, 0x63, 0x68, 0x6f, 0x72, 0x12, 0x25,
|
||||
0x0a, 0x06, 0x70, 0x6f, 0x69, 0x6e, 0x74, 0x73, 0x18, 0x02, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x0d,
|
||||
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|
||||
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|
||||
0x73, 0x74, 0x12, 0x21, 0x0a, 0x04, 0x65, 0x6c, 0x65, 0x73, 0x18, 0x01, 0x20, 0x03, 0x28, 0x0b,
|
||||
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|
||||
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|
||||
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|
||||
0x20, 0x03, 0x28, 0x0b, 0x32, 0x11, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x73, 0x2e, 0x50, 0x6f,
|
||||
0x6c, 0x79, 0x67, 0x6f, 0x6e, 0x32, 0x44, 0x52, 0x04, 0x65, 0x6c, 0x65, 0x73, 0x42, 0x12, 0x5a,
|
||||
0x10, 0x64, 0x6e, 0x6d, 0x73, 0x68, 0x61, 0x72, 0x65, 0x64, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f,
|
||||
0x73, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
|
||||
}
|
||||
|
||||
var (
|
||||
file_geometry_proto_rawDescOnce sync.Once
|
||||
file_geometry_proto_rawDescData = file_geometry_proto_rawDesc
|
||||
)
|
||||
|
||||
func file_geometry_proto_rawDescGZIP() []byte {
|
||||
file_geometry_proto_rawDescOnce.Do(func() {
|
||||
file_geometry_proto_rawDescData = protoimpl.X.CompressGZIP(file_geometry_proto_rawDescData)
|
||||
})
|
||||
return file_geometry_proto_rawDescData
|
||||
}
|
||||
|
||||
var file_geometry_proto_msgTypes = make([]protoimpl.MessageInfo, 5)
|
||||
var file_geometry_proto_goTypes = []interface{}{
|
||||
(*Direction)(nil), // 0: protos.Direction
|
||||
(*Vec2D)(nil), // 1: protos.Vec2D
|
||||
(*Polygon2D)(nil), // 2: protos.Polygon2D
|
||||
(*Vec2DList)(nil), // 3: protos.Vec2DList
|
||||
(*Polygon2DList)(nil), // 4: protos.Polygon2DList
|
||||
}
|
||||
var file_geometry_proto_depIdxs = []int32{
|
||||
1, // 0: protos.Polygon2D.anchor:type_name -> protos.Vec2D
|
||||
1, // 1: protos.Polygon2D.points:type_name -> protos.Vec2D
|
||||
1, // 2: protos.Vec2DList.eles:type_name -> protos.Vec2D
|
||||
2, // 3: protos.Polygon2DList.eles:type_name -> protos.Polygon2D
|
||||
4, // [4:4] is the sub-list for method output_type
|
||||
4, // [4:4] is the sub-list for method input_type
|
||||
4, // [4:4] is the sub-list for extension type_name
|
||||
4, // [4:4] is the sub-list for extension extendee
|
||||
0, // [0:4] is the sub-list for field type_name
|
||||
}
|
||||
|
||||
func init() { file_geometry_proto_init() }
|
||||
func file_geometry_proto_init() {
|
||||
if File_geometry_proto != nil {
|
||||
return
|
||||
}
|
||||
if !protoimpl.UnsafeEnabled {
|
||||
file_geometry_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
|
||||
switch v := v.(*Direction); i {
|
||||
case 0:
|
||||
return &v.state
|
||||
case 1:
|
||||
return &v.sizeCache
|
||||
case 2:
|
||||
return &v.unknownFields
|
||||
default:
|
||||
return nil
|
||||
}
|
||||
}
|
||||
file_geometry_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
|
||||
switch v := v.(*Vec2D); i {
|
||||
case 0:
|
||||
return &v.state
|
||||
case 1:
|
||||
return &v.sizeCache
|
||||
case 2:
|
||||
return &v.unknownFields
|
||||
default:
|
||||
return nil
|
||||
}
|
||||
}
|
||||
file_geometry_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
|
||||
switch v := v.(*Polygon2D); i {
|
||||
case 0:
|
||||
return &v.state
|
||||
case 1:
|
||||
return &v.sizeCache
|
||||
case 2:
|
||||
return &v.unknownFields
|
||||
default:
|
||||
return nil
|
||||
}
|
||||
}
|
||||
file_geometry_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
|
||||
switch v := v.(*Vec2DList); i {
|
||||
case 0:
|
||||
return &v.state
|
||||
case 1:
|
||||
return &v.sizeCache
|
||||
case 2:
|
||||
return &v.unknownFields
|
||||
default:
|
||||
return nil
|
||||
}
|
||||
}
|
||||
file_geometry_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
|
||||
switch v := v.(*Polygon2DList); i {
|
||||
case 0:
|
||||
return &v.state
|
||||
case 1:
|
||||
return &v.sizeCache
|
||||
case 2:
|
||||
return &v.unknownFields
|
||||
default:
|
||||
return nil
|
||||
}
|
||||
}
|
||||
}
|
||||
type x struct{}
|
||||
out := protoimpl.TypeBuilder{
|
||||
File: protoimpl.DescBuilder{
|
||||
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
|
||||
RawDescriptor: file_geometry_proto_rawDesc,
|
||||
NumEnums: 0,
|
||||
NumMessages: 5,
|
||||
NumExtensions: 0,
|
||||
NumServices: 0,
|
||||
},
|
||||
GoTypes: file_geometry_proto_goTypes,
|
||||
DependencyIndexes: file_geometry_proto_depIdxs,
|
||||
MessageInfos: file_geometry_proto_msgTypes,
|
||||
}.Build()
|
||||
File_geometry_proto = out.File
|
||||
file_geometry_proto_rawDesc = nil
|
||||
file_geometry_proto_goTypes = nil
|
||||
file_geometry_proto_depIdxs = nil
|
||||
}
|
||||
@@ -6,6 +6,7 @@ import (
|
||||
"github.com/solarlune/resolv"
|
||||
"math"
|
||||
"strings"
|
||||
. "dnmshared/protos"
|
||||
)
|
||||
|
||||
func ConvexPolygonStr(body *resolv.ConvexPolygon) string {
|
||||
|
||||
@@ -11,6 +11,7 @@ import (
|
||||
"math"
|
||||
"strconv"
|
||||
"strings"
|
||||
. "dnmshared/protos"
|
||||
)
|
||||
|
||||
const (
|
||||
@@ -173,8 +174,6 @@ func (l *TmxLayer) decodeBase64() ([]uint32, error) {
|
||||
return gids, nil
|
||||
}
|
||||
|
||||
type Vec2DList []*Vec2D
|
||||
type Polygon2DList []*Polygon2D
|
||||
type StrToVec2DListMap map[string]*Vec2DList
|
||||
type StrToPolygon2DListMap map[string]*Polygon2DList
|
||||
|
||||
@@ -235,8 +234,6 @@ func tsxPolylineToOffsetsWrtTileCenter(pTmxMapIns *TmxMap, singleObjInTsxFile *T
|
||||
thePolygon2DFromPolyline := &Polygon2D{
|
||||
Anchor: nil,
|
||||
Points: make([]*Vec2D, pointsCount),
|
||||
TileWidth: pTsxIns.TileWidth,
|
||||
TileHeight: pTsxIns.TileHeight,
|
||||
}
|
||||
|
||||
/*
|
||||
@@ -327,7 +324,7 @@ func DeserializeTsxToColliderDict(pTmxMapIns *TmxMap, byteArrOfTsxFile []byte, f
|
||||
if _, ok := theStrToPolygon2DListMap[key]; ok {
|
||||
pThePolygon2DList = theStrToPolygon2DListMap[key]
|
||||
} else {
|
||||
thePolygon2DList := make(Polygon2DList, 0)
|
||||
thePolygon2DListEles := make([]*Polygon2D, 0)
|
||||
theStrToPolygon2DListMap[key] = &thePolygon2DList
|
||||
pThePolygon2DList = theStrToPolygon2DListMap[key]
|
||||
}
|
||||
@@ -442,40 +439,3 @@ func (pTmxMapIns *TmxMap) continuousObjLayerOffsetToContinuousMapNodePos(continu
|
||||
|
||||
return toRet
|
||||
}
|
||||
|
||||
func AlignPolygon2DToBoundingBox(input *Polygon2D) *Polygon2D {
|
||||
// Transform again to put "anchor" at the top-left point of the bounding box for "resolv"
|
||||
float64Max := float64(99999999999999.9)
|
||||
boundingBoxTL := &Vec2D{
|
||||
X: float64Max,
|
||||
Y: float64Max,
|
||||
}
|
||||
for _, p := range input.Points {
|
||||
if p.X < boundingBoxTL.X {
|
||||
boundingBoxTL.X = p.X
|
||||
}
|
||||
if p.Y < boundingBoxTL.Y {
|
||||
boundingBoxTL.Y = p.Y
|
||||
}
|
||||
}
|
||||
|
||||
// Now "input.Anchor" should move to "input.Anchor+boundingBoxTL", thus "boundingBoxTL" is also the value of the negative diff for all "input.Points"
|
||||
output := &Polygon2D{
|
||||
Anchor: &Vec2D{
|
||||
X: input.Anchor.X + boundingBoxTL.X,
|
||||
Y: input.Anchor.Y + boundingBoxTL.Y,
|
||||
},
|
||||
Points: make([]*Vec2D, len(input.Points)),
|
||||
TileWidth: input.TileWidth,
|
||||
TileHeight: input.TileHeight,
|
||||
}
|
||||
|
||||
for i, p := range input.Points {
|
||||
output.Points[i] = &Vec2D{
|
||||
X: p.X - boundingBoxTL.X,
|
||||
Y: p.Y - boundingBoxTL.Y,
|
||||
}
|
||||
}
|
||||
|
||||
return output
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user