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-rw-r--r--mcmap/examples/mapper/.gitignore1
-rw-r--r--mcmap/examples/mapper/blockcolors.go153
-rw-r--r--mcmap/examples/mapper/main.go78
-rw-r--r--mcmap/examples/mapper/map.pngbin0 -> 2261412 bytes
4 files changed, 232 insertions, 0 deletions
diff --git a/mcmap/examples/mapper/.gitignore b/mcmap/examples/mapper/.gitignore
new file mode 100644
index 0000000..c60ccd3
--- /dev/null
+++ b/mcmap/examples/mapper/.gitignore
@@ -0,0 +1 @@
+mapper
diff --git a/mcmap/examples/mapper/blockcolors.go b/mcmap/examples/mapper/blockcolors.go
new file mode 100644
index 0000000..a714b05
--- /dev/null
+++ b/mcmap/examples/mapper/blockcolors.go
@@ -0,0 +1,153 @@
+package main
+
+import (
+ "github.com/kch42/gomcmap/mcmap"
+)
+
+type rgb uint32
+
+func (x rgb) RGBA() (r, g, b, a uint32) {
+ a = 0xffff
+ r = uint32((x >> 16) << 8)
+ g = uint32(((x >> 8) & 0xff) << 8)
+ b = uint32((x & 0xff) << 8)
+ return
+}
+
+var colors = map[mcmap.BlockID]rgb{
+ mcmap.BlkStone: 0x666666,
+ mcmap.BlkGrassBlock: 0x00aa00,
+ mcmap.BlkDirt: 0x644804,
+ mcmap.BlkCobblestone: 0x7a7a7a,
+ mcmap.BlkWoodPlanks: 0xa4721c,
+ mcmap.BlkBedrock: 0x111111,
+ mcmap.BlkWater: 0x0000ff,
+ mcmap.BlkStationaryWater: 0x0000ff,
+ mcmap.BlkLava: 0xff4400,
+ mcmap.BlkStationaryLava: 0xff4400,
+ mcmap.BlkSand: 0xf1ee85,
+ mcmap.BlkGravel: 0x9ba3a9,
+ mcmap.BlkGoldOre: 0xffa200,
+ mcmap.BlkIronOre: 0xe1e1e1,
+ mcmap.BlkCoalOre: 0x333333,
+ mcmap.BlkWood: 0xa4721c,
+ mcmap.BlkLeaves: 0x57a100,
+ mcmap.BlkGlass: 0xeeeeff,
+ mcmap.BlkLapisLazuliOre: 0x3114e3,
+ mcmap.BlkLapisLazuliBlock: 0x3114e3,
+ mcmap.BlkDispenser: 0x7a7a7a,
+ mcmap.BlkSandstone: 0xf1ee85,
+ mcmap.BlkNoteBlock: 0xa4721c,
+ mcmap.BlkBed: 0xa00000,
+ mcmap.BlkPoweredRail: 0xff0000,
+ mcmap.BlkDetectorRail: 0xff0000,
+ mcmap.BlkStickyPiston: 0x91ba12,
+ mcmap.BlkCobweb: 0xdddddd,
+ mcmap.BlkGrass: 0xa0f618,
+ mcmap.BlkPiston: 0xa4721c,
+ mcmap.BlkPistonExtension: 0xa4721c,
+ mcmap.BlkWool: 0xffffff,
+ mcmap.BlkBlockOfGold: 0xffa200,
+ mcmap.BlkBlockOfIron: 0xe1e1e1,
+ mcmap.BlkTNT: 0xa20022,
+ mcmap.BlkBookshelf: 0xa4721c,
+ mcmap.BlkMossStone: 0x589b71,
+ mcmap.BlkObsidian: 0x111144,
+ mcmap.BlkTorch: 0xffcc00,
+ mcmap.BlkFire: 0xffcc00,
+ mcmap.BlkMonsterSpawner: 0x344e6a,
+ mcmap.BlkOakWoodStairs: 0xa4721c,
+ mcmap.BlkChest: 0xa4721c,
+ mcmap.BlkRedstoneWire: 0xff0000,
+ mcmap.BlkDiamondOre: 0x00fff6,
+ mcmap.BlkBlockOfDiamond: 0x00fff6,
+ mcmap.BlkCraftingTable: 0xa4721c,
+ mcmap.BlkWheat: 0xe7ae00,
+ mcmap.BlkFarmland: 0x644804,
+ mcmap.BlkFurnace: 0x7a7a7a,
+ mcmap.BlkBurningFurnace: 0x7a7a7a,
+ mcmap.BlkSignPost: 0xa4721c,
+ mcmap.BlkWoodenDoor: 0xa4721c,
+ mcmap.BlkLadders: 0xa4721c,
+ mcmap.BlkRail: 0xdbdbdb,
+ mcmap.BlkCobblestoneStairs: 0x7a7a7a,
+ mcmap.BlkWallSign: 0xa4721c,
+ mcmap.BlkLever: 0xa4721c,
+ mcmap.BlkStonePressurePlate: 0x666666,
+ mcmap.BlkIronDoor: 0xe1e1e1,
+ mcmap.BlkWoodenPressurePlate: 0xa4721c,
+ mcmap.BlkRedstoneOre: 0xa00000,
+ mcmap.BlkGlowingRedstoneOre: 0xff0000,
+ mcmap.BlkRedstoneTorchInactive: 0xff0000,
+ mcmap.BlkRedstoneTorchActive: 0xff0000,
+ mcmap.BlkStoneButton: 0x666666,
+ mcmap.BlkSnow: 0xe5fffe,
+ mcmap.BlkIce: 0x9fdcff,
+ mcmap.BlkSnowBlock: 0xe5fffe,
+ mcmap.BlkCactus: 0x01bc3a,
+ mcmap.BlkClay: 0x767a82,
+ mcmap.BlkSugarCane: 0x12db50,
+ mcmap.BlkJukebox: 0xa4721c,
+ mcmap.BlkFence: 0xa4721c,
+ mcmap.BlkPumpkin: 0xff7000,
+ mcmap.BlkNetherrack: 0x851c2d,
+ mcmap.BlkSoulSand: 0x796a59,
+ mcmap.BlkGlowstone: 0xffff00,
+ mcmap.BlkNetherPortal: 0xff00ff,
+ mcmap.BlkJackOLantern: 0xff7000,
+ mcmap.BlkRedstoneRepeaterInactive: 0xff0000,
+ mcmap.BlkRedstoneRepeaterActive: 0xff0000,
+ mcmap.BlkTrapdoor: 0xa4721c,
+ mcmap.BlkStoneBricks: 0x666666,
+ mcmap.BlkHugeBrownMushroom: 0xb07859,
+ mcmap.BlkHugeRedMushroom: 0xdd0000,
+ mcmap.BlkIronBars: 0xe1e1e1,
+ mcmap.BlkGlassPane: 0xeeeeff,
+ mcmap.BlkMelon: 0x9ac615,
+ mcmap.BlkVines: 0x50720d,
+ mcmap.BlkFenceGate: 0xa4721c,
+ mcmap.BlkBrickStairs: 0xc42500,
+ mcmap.BlkStoneBrickStairs: 0x666666,
+ mcmap.BlkMycelium: 0x7c668c,
+ mcmap.BlkLilyPad: 0x50720d,
+ mcmap.BlkNetherBrick: 0xc42500,
+ mcmap.BlkNetherBrickFence: 0xc42500,
+ mcmap.BlkNetherBrickStairs: 0xc42500,
+ mcmap.BlkEnchantmentTable: 0x222244,
+ mcmap.BlkBrewingStand: 0x666666,
+ mcmap.BlkCauldron: 0x666666,
+ mcmap.BlkEndPortal: 0x000000,
+ mcmap.BlkEndPortalBlock: 0xe0dbce,
+ mcmap.BlkEndStone: 0xe0dbce,
+ mcmap.BlkRedstoneLampInactive: 0xffff00,
+ mcmap.BlkRedstoneLampActive: 0xffff00,
+ mcmap.BlkSandstoneStairs: 0xf1ee85,
+ mcmap.BlkEmeraldOre: 0x00c140,
+ mcmap.BlkEnderChest: 0x222244,
+ mcmap.BlkBlockOfEmerald: 0x00c140,
+ mcmap.BlkSpruceWoodStairs: 0xa4721c,
+ mcmap.BlkBirchWoodStairs: 0xa4721c,
+ mcmap.BlkJungleWoodStairs: 0xa4721c,
+ mcmap.BlkCommandBlock: 0xe8ec78,
+ mcmap.BlkBeacon: 0x00fff6,
+ mcmap.BlkCobblestoneWall: 0x7a7a7a,
+ mcmap.BlkCarrots: 0xff6000,
+ mcmap.BlkPotatoes: 0xc6cd0c,
+ mcmap.BlkWoodenButton: 0xa4721c,
+ mcmap.BlkAnvil: 0x444444,
+ mcmap.BlkTrappedChest: 0xa4721c,
+ mcmap.BlkRedstoneComparatorInactive: 0xff0000,
+ mcmap.BlkRedstoneComparatorActive: 0xff0000,
+ mcmap.BlkBlockOfRedstone: 0xff0000,
+ mcmap.BlkNetherQuartzOre: 0xe7e7e7,
+ mcmap.BlkHopper: 0x444444,
+ mcmap.BlkBlockOfQuartz: 0xe7e7e7,
+ mcmap.BlkQuartzStairs: 0xe7e7e7,
+ mcmap.BlkActivatorRail: 0xff0000,
+ mcmap.BlkDropper: 0x444444,
+ mcmap.BlkStainedClay: 0x767a82,
+ mcmap.BlkHayBlock: 0xe7ae00,
+ mcmap.BlkCarpet: 0xffffff,
+ mcmap.BlkHardenedClay: 0x767a82,
+ mcmap.BlkBlockOfCoal: 0x333333,
+}
diff --git a/mcmap/examples/mapper/main.go b/mcmap/examples/mapper/main.go
new file mode 100644
index 0000000..11cc97d
--- /dev/null
+++ b/mcmap/examples/mapper/main.go
@@ -0,0 +1,78 @@
+package main
+
+import (
+ "flag"
+ "fmt"
+ "github.com/kch42/gomcmap/mcmap"
+ "image"
+ "image/png"
+ "os"
+)
+
+func main() {
+ path := flag.String("path", "", "Path to region directory")
+ output := flag.String("output", "map.png", "File to write image to")
+ flag.Parse()
+
+ if *path == "" {
+ flag.Usage()
+ os.Exit(1)
+ }
+
+ region, err := mcmap.OpenRegion(*path, true)
+ if err != nil {
+ fmt.Fprintf(os.Stderr, "Could not open region: %s\n", err)
+ os.Exit(1)
+ }
+
+ xmin, xmax, zmin, zmax := region.MaxDims()
+ w := (xmax - xmin) * 16
+ h := (zmax - zmin) * 16
+ img := image.NewRGBA(image.Rect(0, 0, w, h))
+
+chunkLoop:
+ for chunkPos := range region.AllChunks() {
+ cx, cz := chunkPos.X, chunkPos.Z
+ chunk, err := region.Chunk(cx, cz)
+ switch err {
+ case nil:
+ case mcmap.NotAvailable:
+ continue chunkLoop
+ default:
+ fmt.Fprintf(os.Stderr, "Error while getting chunk (%d, %d): %s\n", cx, cz, err)
+ os.Exit(1)
+ }
+
+ for x := 0; x < 16; x++ {
+ scanZ:
+ for z := 0; z < 16; z++ {
+ ax, az := mcmap.ChunkToBlock(cx, cz, x, z)
+ for y := 255; y >= 0; y-- {
+ blk := chunk.Block(x, y, z)
+ c, ok := colors[blk.ID]
+ if ok {
+ img.Set(ax-(xmin*16), az-(zmin*16), c)
+ continue scanZ
+ }
+ }
+ img.Set(ax-(xmin*16), az-(zmin*16), rgb(0x000000))
+ }
+ }
+
+ if err := region.UnloadChunk(cx, cz); err != nil {
+ fmt.Fprintf(os.Stderr, "Error while unloading chunk %d, %d: %s\n", cx, cz, err)
+ os.Exit(1)
+ }
+ }
+
+ f, err := os.Create(*output)
+ if err != nil {
+ fmt.Fprintf(os.Stderr, "Could not write image: %s", err)
+ os.Exit(1)
+ }
+ defer f.Close()
+ if err := png.Encode(f, img); err != nil {
+ fmt.Fprintf(os.Stderr, "Could not write image: %s", err)
+ os.Exit(1)
+ }
+}
diff --git a/mcmap/examples/mapper/map.png b/mcmap/examples/mapper/map.png
new file mode 100644
index 0000000..cdba246
--- /dev/null
+++ b/mcmap/examples/mapper/map.png
Binary files differ
generated by cgit v1.2.3-70-g09d2 (git 2.51.0) at 2025-10-31 06:17:10 +0000