mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-10 21:17:27 +01:00
100 lines
2.7 KiB
Go
100 lines
2.7 KiB
Go
// Copyright 2013 Hajime Hoshi
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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package input
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import (
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"fmt"
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"github.com/hajimehoshi/go.ebiten"
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"github.com/hajimehoshi/go.ebiten/graphics"
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"github.com/hajimehoshi/go.ebiten/graphics/matrix"
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"image"
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"os"
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)
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type Input struct {
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textTexture graphics.Texture
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inputState ebiten.InputState
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}
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func New() *Input {
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return &Input{}
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}
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func (game *Input) Init(tf graphics.TextureFactory) {
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file, err := os.Open("images/text.png")
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if err != nil {
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panic(err)
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}
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defer file.Close()
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img, _, err := image.Decode(file)
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if err != nil {
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panic(err)
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}
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if game.textTexture, err = tf.NewTextureFromImage(img); err != nil {
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panic(err)
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}
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}
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func (game *Input) Update(context ebiten.GameContext) {
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game.inputState = context.InputState()
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}
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func (game *Input) Draw(g graphics.Context) {
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g.Fill(128, 128, 255)
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str := fmt.Sprintf(`Input State:
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X: %d
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Y: %d`, game.inputState.X, game.inputState.Y)
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game.drawText(g, str, 5, 5)
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}
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func (game *Input) drawText(g graphics.Context, text string, x, y int) {
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const letterWidth = 6
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const letterHeight = 16
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parts := []graphics.TexturePart{}
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textX := 0
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textY := 0
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for _, c := range text {
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if c == '\n' {
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textX = 0
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textY += letterHeight
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continue
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}
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code := int(c)
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x := (code % 32) * letterWidth
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y := (code / 32) * letterHeight
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source := graphics.Rect{x, y, letterWidth, letterHeight}
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parts = append(parts, graphics.TexturePart{
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LocationX: textX,
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LocationY: textY,
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Source: source,
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})
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textX += letterWidth
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}
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geometryMatrix := matrix.IdentityGeometry()
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geometryMatrix.Translate(float64(x), float64(y))
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colorMatrix := matrix.IdentityColor()
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g.DrawTextureParts(game.textTexture.ID(), parts,
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geometryMatrix, colorMatrix)
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}
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