func (m *Map) GenerateCollision() {
var shapes []*chipmunk.Shape
for x := 0; x < m.Width; x++ {
for y := 0; y < m.Height; y++ {
if t, e := m.GetTile(x, y); e {
if t.Collision() != CollisionNone {
p, _ := m.GetTilePos(x, y)
shape := chipmunk.NewBox(vect.Vect{vect.Float(p.X), vect.Float(p.Y)},
vect.Float(m.TileSize), vect.Float(m.TileSize))
shape.Layer = chipmunk.Layer(m.Layer)
shape.SetFriction(0)
shapes = append(shapes, shape)
}
}
}
}
m.GameObject().AddComponent(engine.NewPhysicsShapes(true, shapes))
}
func (m *Map) GenerateCollision2() {
tilesy := make(map[int][]int)
tilesx := make(map[int][]int)
for x := 0; x < m.Width; x++ {
for y := 0; y < m.Height; y++ {
if t, e := m.GetTile(x, y); e {
if t.Collision() != CollisionNone {
tilesy[y] = append(tilesy[y], x)
tilesx[x] = append(tilesx[x], y)
}
}
}
}
var shapes []*chipmunk.Shape
centerx := vect.Float(m.TileSize * float32(m.Width) / 2)
centery := vect.Float(m.TileSize * float32(m.Height) / 2)
println("Map layer", m.Layer)
for y, xarr := range tilesy {
minx := xarr[0]
maxx := xarr[0]
sort.Ints(xarr)
for i := 1; i < len(xarr); i++ {
x := xarr[i]
if maxx+1 == x {
maxx = x
} else {
if maxx-minx > 1 {
shapes = append(shapes, chipmunk.NewSegment(
vect.Vect{vect.Float(float32(minx)*m.TileSize) - centerx, -vect.Float(float32(y)*m.TileSize) + centery},
vect.Vect{vect.Float(float32(maxx)*m.TileSize) - centerx, -vect.Float(float32(y)*m.TileSize) + centery},
1))
println(y, minx, maxx)
}
minx = x
maxx = x
}
}
if maxx-minx > 1 {
shapes = append(shapes, chipmunk.NewSegment(
vect.Vect{vect.Float(float32(minx)*m.TileSize) - centerx, -vect.Float(float32(y)*m.TileSize) + centery},
vect.Vect{vect.Float(float32(maxx)*m.TileSize) - centerx, -vect.Float(float32(y)*m.TileSize) + centery},
1))
println(y, minx, maxx)
}
}
for x, yarr := range tilesx {
miny := yarr[0]
maxy := yarr[0]
sort.Ints(yarr)
println(len(yarr))
for i := 1; i < len(yarr); i++ {
y := yarr[i]
if maxy+1 == y {
maxy = y
} else {
if maxy-miny > 1 {
shapes = append(shapes, chipmunk.NewSegment(
vect.Vect{vect.Float(float32(x)*m.TileSize) - centerx, -vect.Float(float32(miny)*m.TileSize) + centery},
vect.Vect{vect.Float(float32(x)*m.TileSize) - centerx, -vect.Float(float32(maxy)*m.TileSize) + centery},
1))
println(x, miny, maxy)
}
miny = y
maxy = y
}
}
if maxy-miny > 1 {
shapes = append(shapes, chipmunk.NewSegment(
vect.Vect{vect.Float(float32(x)*m.TileSize) - centerx, -vect.Float(float32(miny)*m.TileSize) + centery},
vect.Vect{vect.Float(float32(x)*m.TileSize) - centerx, -vect.Float(float32(maxy)*m.TileSize) + centery},
1))
println(x, miny, maxy)
}
}
println("Map end")
m.GameObject().AddComponent(engine.NewPhysicsShapes(true, shapes))
}