mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-12-27 04:08:53 +01:00
173 lines
6.4 KiB
Go
173 lines
6.4 KiB
Go
// Copyright 2018 The Ebiten Authors
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"image/color"
|
|
"log"
|
|
"math/rand"
|
|
|
|
"github.com/hajimehoshi/ebiten/v2"
|
|
"github.com/hajimehoshi/ebiten/v2/ebitenutil"
|
|
"github.com/jakecoffman/cp"
|
|
)
|
|
|
|
const (
|
|
screenWidth = 600
|
|
screenHeight = 480
|
|
)
|
|
|
|
var (
|
|
dot = ebiten.NewImage(1, 1)
|
|
)
|
|
|
|
func init() {
|
|
dot.Fill(color.White)
|
|
}
|
|
|
|
type Game struct {
|
|
space *cp.Space
|
|
}
|
|
|
|
func NewGame() *Game {
|
|
const (
|
|
imageWidth = 188
|
|
imageHeight = 35
|
|
)
|
|
|
|
space := cp.NewSpace()
|
|
space.Iterations = 1
|
|
|
|
// The space will contain a very large number of similarly sized objects.
|
|
// This is the perfect candidate for using the spatial hash.
|
|
// Generally you will never need to do this.
|
|
space.UseSpatialHash(2.0, 10000)
|
|
|
|
var body *cp.Body
|
|
var shape *cp.Shape
|
|
|
|
for y := 0; y < imageHeight; y++ {
|
|
for x := 0; x < imageWidth; x++ {
|
|
if getPixel(uint(x), uint(y)) == 0 {
|
|
continue
|
|
}
|
|
|
|
xJitter := 0.05 * rand.Float64()
|
|
yJitter := 0.05 * rand.Float64()
|
|
|
|
shape = makeBall(2.0*(float64(x)+imageWidth/2+xJitter)-75, 2*(imageHeight/2.0+float64(y)+yJitter)+150)
|
|
space.AddBody(shape.Body())
|
|
space.AddShape(shape)
|
|
}
|
|
}
|
|
|
|
body = space.AddBody(cp.NewBody(1e9, cp.INFINITY))
|
|
body.SetPosition(cp.Vector{X: -1000, Y: 225})
|
|
body.SetVelocity(400, 0)
|
|
|
|
shape = space.AddShape(cp.NewCircle(body, 8, cp.Vector{}))
|
|
shape.SetElasticity(0)
|
|
shape.SetFriction(0)
|
|
|
|
return &Game{
|
|
space: space,
|
|
}
|
|
}
|
|
|
|
func (g *Game) Update() error {
|
|
g.space.Step(1.0 / float64(ebiten.TPS()))
|
|
return nil
|
|
}
|
|
|
|
func (g *Game) Draw(screen *ebiten.Image) {
|
|
screen.Fill(color.Black)
|
|
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.ColorM.Scale(200.0/255.0, 200.0/255.0, 200.0/255.0, 1)
|
|
|
|
g.space.EachBody(func(body *cp.Body) {
|
|
op.GeoM.Reset()
|
|
op.GeoM.Translate(body.Position().X, body.Position().Y)
|
|
screen.DrawImage(dot, op)
|
|
})
|
|
|
|
ebitenutil.DebugPrint(screen, fmt.Sprintf("TPS: %0.2f", ebiten.ActualTPS()))
|
|
}
|
|
|
|
func (g *Game) Layout(outsideWidth, outsideHeight int) (int, int) {
|
|
return screenWidth, screenHeight
|
|
}
|
|
|
|
func getPixel(x, y uint) int {
|
|
const imageRowLength = 24
|
|
return (imageBitmap[(x>>3)+y*imageRowLength] >> (^x & 0x7)) & 1
|
|
}
|
|
|
|
func makeBall(x, y float64) *cp.Shape {
|
|
body := cp.NewBody(1.0, cp.INFINITY)
|
|
body.SetPosition(cp.Vector{X: x, Y: y})
|
|
|
|
shape := cp.NewCircle(body, 0.95, cp.Vector{})
|
|
shape.SetElasticity(0)
|
|
shape.SetFriction(0)
|
|
|
|
return shape
|
|
}
|
|
|
|
var imageBitmap = []int{
|
|
15, -16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, -64, 15, 63, -32, -2, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 31, -64, 15, 127, -125, -1, -128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 127, -64, 15, 127, 15, -1, -64, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, -1, -64, 15, -2,
|
|
31, -1, -64, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, -1, -64, 0, -4, 63, -1, -32, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, -1, -64, 15, -8, 127, -1, -32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
1, -1, -64, 0, -8, -15, -1, -32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, -31, -1, -64, 15, -8, -32,
|
|
-1, -32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, -15, -1, -64, 9, -15, -32, -1, -32, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 31, -15, -1, -64, 0, -15, -32, -1, -32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 63, -7, -1, -64, 9, -29, -32, 127, -61, -16, 63, 15, -61, -1, -8, 31, -16, 15, -8, 126, 7, -31,
|
|
-8, 31, -65, -7, -1, -64, 9, -29, -32, 0, 7, -8, 127, -97, -25, -1, -2, 63, -8, 31, -4, -1, 15, -13,
|
|
-4, 63, -1, -3, -1, -64, 9, -29, -32, 0, 7, -8, 127, -97, -25, -1, -2, 63, -8, 31, -4, -1, 15, -13,
|
|
-2, 63, -1, -3, -1, -64, 9, -29, -32, 0, 7, -8, 127, -97, -25, -1, -1, 63, -4, 63, -4, -1, 15, -13,
|
|
-2, 63, -33, -1, -1, -32, 9, -25, -32, 0, 7, -8, 127, -97, -25, -1, -1, 63, -4, 63, -4, -1, 15, -13,
|
|
-1, 63, -33, -1, -1, -16, 9, -25, -32, 0, 7, -8, 127, -97, -25, -1, -1, 63, -4, 63, -4, -1, 15, -13,
|
|
-1, 63, -49, -1, -1, -8, 9, -57, -32, 0, 7, -8, 127, -97, -25, -8, -1, 63, -2, 127, -4, -1, 15, -13,
|
|
-1, -65, -49, -1, -1, -4, 9, -57, -32, 0, 7, -8, 127, -97, -25, -8, -1, 63, -2, 127, -4, -1, 15, -13,
|
|
-1, -65, -57, -1, -1, -2, 9, -57, -32, 0, 7, -8, 127, -97, -25, -8, -1, 63, -2, 127, -4, -1, 15, -13,
|
|
-1, -1, -57, -1, -1, -1, 9, -57, -32, 0, 7, -1, -1, -97, -25, -8, -1, 63, -1, -1, -4, -1, 15, -13, -1,
|
|
-1, -61, -1, -1, -1, -119, -57, -32, 0, 7, -1, -1, -97, -25, -8, -1, 63, -1, -1, -4, -1, 15, -13, -1,
|
|
-1, -61, -1, -1, -1, -55, -49, -32, 0, 7, -1, -1, -97, -25, -8, -1, 63, -1, -1, -4, -1, 15, -13, -1,
|
|
-1, -63, -1, -1, -1, -23, -49, -32, 127, -57, -1, -1, -97, -25, -1, -1, 63, -1, -1, -4, -1, 15, -13,
|
|
-1, -1, -63, -1, -1, -1, -16, -49, -32, -1, -25, -1, -1, -97, -25, -1, -1, 63, -33, -5, -4, -1, 15,
|
|
-13, -1, -1, -64, -1, -9, -1, -7, -49, -32, -1, -25, -8, 127, -97, -25, -1, -1, 63, -33, -5, -4, -1,
|
|
15, -13, -1, -1, -64, -1, -13, -1, -32, -49, -32, -1, -25, -8, 127, -97, -25, -1, -2, 63, -49, -13,
|
|
-4, -1, 15, -13, -1, -1, -64, 127, -7, -1, -119, -17, -15, -1, -25, -8, 127, -97, -25, -1, -2, 63,
|
|
-49, -13, -4, -1, 15, -13, -3, -1, -64, 127, -8, -2, 15, -17, -1, -1, -25, -8, 127, -97, -25, -1,
|
|
-8, 63, -49, -13, -4, -1, 15, -13, -3, -1, -64, 63, -4, 120, 0, -17, -1, -1, -25, -8, 127, -97, -25,
|
|
-8, 0, 63, -57, -29, -4, -1, 15, -13, -4, -1, -64, 63, -4, 0, 15, -17, -1, -1, -25, -8, 127, -97,
|
|
-25, -8, 0, 63, -57, -29, -4, -1, -1, -13, -4, -1, -64, 31, -2, 0, 0, 103, -1, -1, -57, -8, 127, -97,
|
|
-25, -8, 0, 63, -57, -29, -4, -1, -1, -13, -4, 127, -64, 31, -2, 0, 15, 103, -1, -1, -57, -8, 127,
|
|
-97, -25, -8, 0, 63, -61, -61, -4, 127, -1, -29, -4, 127, -64, 15, -8, 0, 0, 55, -1, -1, -121, -8,
|
|
127, -97, -25, -8, 0, 63, -61, -61, -4, 127, -1, -29, -4, 63, -64, 15, -32, 0, 0, 23, -1, -2, 3, -16,
|
|
63, 15, -61, -16, 0, 31, -127, -127, -8, 31, -1, -127, -8, 31, -128, 7, -128, 0, 0,
|
|
}
|
|
|
|
func main() {
|
|
ebiten.SetWindowSize(screenWidth, screenHeight)
|
|
ebiten.SetWindowTitle("Ebiten")
|
|
if err := ebiten.RunGame(NewGame()); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
}
|