Merge pull request #13 from zcking/feature/tilemap-example
tilemap example added
This commit is contained in:
Michal Štrba
GitHub
commit
d8a6e4b962
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tilemap
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# Pixel Tiles Example
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This is a very simple example of how you might load a tilemap generated with [Tiled](https://www.mapeditor.org/) (i.e. a .tmx file),
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in a game with [Pixel](https://github.com/faiface/pixel) for Go.
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The tilemap used in this example is humbly borrowed from James Bowman's repo here: [https://github.com/jamesbowman/tiled-maps](https://github.com/jamesbowman/tiled-maps).
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## Preview
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## Tilemap
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Binary file not shown.
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After Width: | Height: | Size: 196 KiB |
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@ -0,0 +1,60 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<map version="1.0" orientation="orthogonal" renderorder="right-down" width="120" height="18" tilewidth="128" tileheight="128" nextobjectid="1">
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<tileset firstgid="1" name="gameart2d-desert" tilewidth="128" tileheight="128" tilecount="40" columns="5">
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<image source="gameart2d-desert.png" width="640" height="1024"/>
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<tile id="2">
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<properties>
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<property name="type" type="int" value="1"/>
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</properties>
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</tile>
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<tile id="7">
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<properties>
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<property name="type" type="int" value="1"/>
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</properties>
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</tile>
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</tileset>
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<layer name="background" width="120" height="18">
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<data encoding="csv">
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</data>
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</layer>
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|
||||
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,17,19,0,0,37,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,7,14,15,3,3,4,0,21,22,0,0,17,19,0,0,0,0,0,0,0,0,0,17,18,19,0,0,0,0,0,0,0,0,33,34,35,0,0,2,11,12,8,8,8,8,8,8,8,13,13,20,0,0,0,29,30,0,23,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
||||
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,17,19,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,16,13,13,13,13,20,0,17,18,19,0,0,0,0,0,0,0,0,33,34,35,0,0,0,0,0,0,0,0,0,0,0,0,38,39,40,2,11,12,8,8,8,8,8,8,8,13,13,20,0,0,0,0,2,3,3,3,4,0,0,17,19,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
||||
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,17,19,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,40,2,3,4,0,0,0,0,38,39,40,0,0,0,0,0,0,0,0,0,0,0,0,0,2,11,12,8,8,8,8,8,8,8,13,13,20,0,0,0,32,2,11,12,8,8,8,9,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
||||
0,0,0,0,0,0,0,0,0,0,0,0,37,0,26,0,0,0,0,17,19,0,0,0,0,0,0,0,0,0,0,0,0,0,0,29,30,0,0,0,0,0,0,0,0,0,0,0,0,40,2,3,11,12,8,9,0,0,0,0,0,2,3,4,0,0,0,0,0,0,0,0,0,0,2,11,12,8,8,8,8,8,13,13,13,13,20,0,0,0,0,2,11,12,8,8,8,8,8,9,0,0,0,17,19,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
||||
0,0,0,0,0,0,0,0,0,0,0,1,2,3,3,3,3,4,5,0,0,0,0,0,0,0,0,0,0,0,23,1,2,3,3,3,3,4,0,0,0,33,34,35,0,0,40,2,3,11,12,8,8,8,8,9,0,0,0,0,0,7,8,9,0,33,34,35,0,0,0,0,2,11,12,8,8,8,8,8,8,8,9,0,0,0,0,0,0,2,11,12,8,8,8,8,8,8,8,9,0,0,0,0,33,34,35,33,34,35,33,34,35,0,0,0,0,0,27,0,
|
||||
27,0,0,37,37,0,0,0,0,2,3,11,12,8,8,8,8,9,10,0,0,0,0,0,25,0,0,0,0,2,3,11,12,8,8,8,8,9,0,0,0,38,39,40,2,3,11,12,8,8,8,8,8,8,8,9,0,0,0,0,0,7,8,9,0,38,39,40,0,0,2,11,12,8,8,8,8,8,8,8,8,8,9,0,0,32,0,2,11,12,8,8,8,8,8,8,8,8,8,9,0,0,0,31,37,39,37,32,39,21,22,39,37,0,2,3,3,3,3,3,
|
||||
3,3,3,3,3,3,3,3,11,12,8,8,8,8,8,8,8,14,15,3,3,3,3,3,3,3,3,3,11,12,8,8,8,8,8,8,8,9,0,0,2,3,3,11,12,8,8,8,8,8,8,8,8,8,8,9,0,0,0,0,0,7,8,14,15,3,3,3,3,11,12,8,8,8,8,8,8,8,8,8,8,8,14,15,3,3,11,12,8,8,8,8,8,8,8,8,8,8,8,9,0,0,0,17,18,18,18,18,18,18,18,18,19,0,7,8,8,8,8,8
|
||||
</data>
|
||||
</layer>
|
||||
</map>
|
||||
|
|
@ -0,0 +1,145 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"image/png"
|
||||
"math"
|
||||
"os"
|
||||
"time"
|
||||
|
||||
"golang.org/x/image/colornames"
|
||||
|
||||
"github.com/faiface/pixel"
|
||||
"github.com/faiface/pixel/pixelgl"
|
||||
"github.com/salviati/go-tmx/tmx"
|
||||
)
|
||||
|
||||
var clearColor = colornames.Skyblue
|
||||
|
||||
var sprites []*pixel.Sprite
|
||||
|
||||
func gameloop(win *pixelgl.Window, tilemap *tmx.Map) {
|
||||
// Load the sprites
|
||||
sprites := make(map[string]*pixel.Sprite)
|
||||
for _, tileset := range tilemap.Tilesets {
|
||||
if _, alreadyLoaded := sprites[tileset.Image.Source]; !alreadyLoaded {
|
||||
sprites[tileset.Image.Source] = loadSprite(tileset.Image.Source)
|
||||
}
|
||||
}
|
||||
|
||||
var (
|
||||
camPos = pixel.ZV
|
||||
camSpeed = 1000.0
|
||||
camZoom = 0.2
|
||||
camZoomSpeed = 1.2
|
||||
)
|
||||
|
||||
last := time.Now()
|
||||
for !win.Closed() {
|
||||
dt := time.Since(last).Seconds()
|
||||
last = time.Now()
|
||||
|
||||
// Camera movement
|
||||
cam := pixel.IM.Scaled(camPos, camZoom).Moved(win.Bounds().Center().Sub(camPos))
|
||||
win.SetMatrix(cam)
|
||||
if win.Pressed(pixelgl.KeyLeft) {
|
||||
camPos.X -= camSpeed * dt
|
||||
}
|
||||
if win.Pressed(pixelgl.KeyRight) {
|
||||
camPos.X += camSpeed * dt
|
||||
}
|
||||
if win.Pressed(pixelgl.KeyDown) {
|
||||
camPos.Y -= camSpeed * dt
|
||||
}
|
||||
if win.Pressed(pixelgl.KeyUp) {
|
||||
camPos.Y += camSpeed * dt
|
||||
}
|
||||
camZoom *= math.Pow(camZoomSpeed, win.MouseScroll().Y)
|
||||
|
||||
win.Clear(clearColor)
|
||||
|
||||
// Draw tiles
|
||||
for _, layer := range tilemap.Layers {
|
||||
for tileIndex, tile := range layer.DecodedTiles {
|
||||
ts := layer.Tileset
|
||||
tID := int(tile.ID)
|
||||
|
||||
if tID == 0 {
|
||||
// Tile ID 0 means blank, skip it.
|
||||
continue
|
||||
}
|
||||
|
||||
// Calculate the framing for the tile within its tileset's source image
|
||||
numRows := ts.Tilecount / ts.Columns
|
||||
x, y := tileIDToCoord(tID, ts.Columns, numRows)
|
||||
gamePos := indexToGamePos(tileIndex, tilemap.Width, tilemap.Height)
|
||||
|
||||
iX := float64(x) * float64(ts.TileWidth)
|
||||
fX := iX + float64(ts.TileWidth)
|
||||
iY := float64(y) * float64(ts.TileHeight)
|
||||
fY := iY + float64(ts.TileHeight)
|
||||
|
||||
sprite := sprites[ts.Image.Source]
|
||||
sprite.Set(sprite.Picture(), pixel.R(iX, iY, fX, fY))
|
||||
pos := gamePos.ScaledXY(pixel.V(float64(ts.TileWidth), float64(ts.TileHeight)))
|
||||
sprite.Draw(win, pixel.IM.Moved(pos))
|
||||
}
|
||||
}
|
||||
|
||||
win.Update()
|
||||
}
|
||||
}
|
||||
|
||||
func tileIDToCoord(tID int, numColumns int, numRows int) (x int, y int) {
|
||||
x = tID % numColumns
|
||||
y = numRows - (tID / numColumns) - 1
|
||||
return
|
||||
}
|
||||
|
||||
func indexToGamePos(idx int, width int, height int) pixel.Vec {
|
||||
gamePos := pixel.V(
|
||||
float64(idx%width)-1,
|
||||
float64(height)-float64(idx/width),
|
||||
)
|
||||
return gamePos
|
||||
}
|
||||
|
||||
func run() {
|
||||
// Create the window with OpenGL
|
||||
cfg := pixelgl.WindowConfig{
|
||||
Title: "Pixel Tilemaps",
|
||||
Bounds: pixel.R(0, 0, 800, 600),
|
||||
VSync: true,
|
||||
}
|
||||
|
||||
win, err := pixelgl.NewWindow(cfg)
|
||||
panicIfErr(err)
|
||||
|
||||
// Initialize art assets (i.e. the tilemap)
|
||||
tilemap, err := tmx.ReadFile("gameart2d-desert.tmx")
|
||||
panicIfErr(err)
|
||||
|
||||
fmt.Println("use WASD to move camera around")
|
||||
gameloop(win, tilemap)
|
||||
}
|
||||
|
||||
func loadSprite(path string) *pixel.Sprite {
|
||||
f, err := os.Open(path)
|
||||
panicIfErr(err)
|
||||
|
||||
img, err := png.Decode(f)
|
||||
panicIfErr(err)
|
||||
|
||||
pd := pixel.PictureDataFromImage(img)
|
||||
return pixel.NewSprite(pd, pd.Bounds())
|
||||
}
|
||||
|
||||
func main() {
|
||||
pixelgl.Run(run)
|
||||
}
|
||||
|
||||
func panicIfErr(err error) {
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
}
|
||||
Binary file not shown.
|
After Width: | Height: | Size: 48 KiB |
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Reference in New Issue