func (b *Box) inSolid(world mapgen.BlockSource) bool {
blockCollide := func(x, y, z int) bool {
blockCoord := coords.Block{x, y, z}
if world.Block(blockCoord).Solid() {
center := blockCoord.Center()
blockBox := NewBox(center.Vec3(), vmath.Vec3{0.5, 0.5, 0.5})
return b.Collides(blockBox)
}
return false
}
f := func(n float64) int {
return int(math.Floor(n))
}
xs := f(b.xs)
xe := f(b.xe)
ys := f(b.ys)
ye := f(b.ye)
zs := f(b.zs)
ze := f(b.ze)
for x := xs; x <= xe; x++ {
for y := ys; y <= ye; y++ {
for z := zs; z <= ze; z++ {
if blockCollide(x, y, z) {
return true
}
}
}
}
return false
}
func (ray *Ray) FindAnyIntersect(blocks mapgen.BlockSource, boxes []*Box) (*vmath.Vec3, int) {
pos := ray.pos
for dist := 0.0; dist < RAY_MAX_DIST; dist += RAY_PRECISION {
pos.Translate(&ray.dir, RAY_PRECISION)
for i, v := range boxes {
if v == nil {
continue
}
if !v.Contains(pos) {
continue
}
return &pos, i
}
wc := coords.World(pos)
if blocks.Block(wc.Block()).Solid() {
return &pos, -1
}
}
return nil, -1
}