Implement basic pathfinding

bot/path/blocks.go

@@ -0,0 +1,49 @@
+package path
+
+import (
+	"github.com/Tnze/go-mc/bot/world"
+	"github.com/Tnze/go-mc/data/block"
+)
+
+var (
+	safeStepBlocks = make(map[world.BlockStatus]struct{}, 1024)
+	blocks         = []block.Block{
+		block.Stone,
+		block.Granite,
+		block.PolishedGranite,
+		block.Diorite,
+		block.PolishedDiorite,
+		block.Andesite,
+		block.PolishedAndesite,
+		block.GrassBlock,
+		block.Dirt,
+		block.CoarseDirt,
+		block.Cobblestone,
+		block.OakPlanks,
+		block.SprucePlanks,
+		block.BirchPlanks,
+		block.JunglePlanks,
+		block.AcaciaPlanks,
+		block.DarkOakPlanks,
+		block.Bedrock,
+		block.GoldOre,
+		block.IronOre,
+		block.CoalOre,
+		block.Glass,
+		block.LapisOre,
+		block.Sandstone,
+		block.RedstoneOre,
+	}
+)
+
+func init() {
+	for _, b := range blocks {
+		if b.MinStateID == b.MaxStateID {
+			safeStepBlocks[world.BlockStatus(b.MinStateID)] = struct{}{}
+		} else {
+			for i := b.MinStateID; i <= b.MaxStateID; i++ {
+				safeStepBlocks[world.BlockStatus(i)] = struct{}{}
+			}
+		}
+	}
+}