/
components.go
70 lines (59 loc) · 2.4 KB
/
components.go
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// This file is part of Xtownrider.
//
// Copyright © 2020 The Xtownrider Contributors
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
package libxtownrider
import "github.com/veandco/go-sdl2/sdl"
// SpriteComponent is an ECS component and resource that stores sprite of the entity.
type SpriteComponent struct {
filename string
Texture *sdl.Texture
W int32
H int32
}
// NewSpriteComponent makes a new instance of SpriteComponent by reading the BMP file.
func NewSpriteComponent(renderer *sdl.Renderer, file string) (*SpriteComponent, error) {
var err error
spriteComponent := new(SpriteComponent)
spriteComponent.Texture, err = loadTextureFromFile(renderer, file)
if err != nil {
return nil, err
}
spriteComponent.filename = file
_, _, spriteComponent.W, spriteComponent.H, err = spriteComponent.Texture.Query()
if err != nil {
return nil, err
}
return spriteComponent, nil
}
// GetResourceFilename returns the filename of sprite.
func (spriteComponent SpriteComponent) GetResourceFilename() string {
return spriteComponent.filename
}
// TransformComponent is an ECS component that stores location of the entity.
type TransformComponent struct {
X int32
Y int32
}
// NewTransformComponent makes new instance of TransformComponent.
func NewTransformComponent(x int32, y int32) *TransformComponent {
transformComponent := &TransformComponent{X: x, Y: y}
return transformComponent
}