157 lines
2.9 KiB
Go
157 lines
2.9 KiB
Go
package types
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import (
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"log"
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"math"
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"sync"
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"gitea.wisellama.rocks/Project-Ely/project-ely/internal/game/entity/animation"
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"gitea.wisellama.rocks/Project-Ely/project-ely/internal/vector"
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"github.com/veandco/go-sdl2/sdl"
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)
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type penguin struct {
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mx sync.RWMutex
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// Animation parameters
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currentAnimation EntityAnimation
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animationStep int32
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facingRight bool
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updateAnimation bool
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// Physical parameters
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worldPosition *vector.Vec2F
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direction *vector.Vec2F
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speed float64
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}
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func NewPenguin(renderer *sdl.Renderer) *penguin {
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position := vector.Vec2F{}
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direction := vector.Vec2F{}
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speed := 1.0
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p := penguin{
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currentAnimation: animation.PenguinAnimations[animation.PENGUIN_DEFAULT],
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animationStep: 0,
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facingRight: true,
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worldPosition: &position,
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speed: speed,
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direction: &direction,
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}
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return &p
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}
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func (p *penguin) Draw() error {
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step := p.animationStep / p.currentAnimation.GetSpeed()
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// TODO
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//windowPosition := worldPosToWindowPos()
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windowPosition := &sdl.Point{
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X: int32(math.Round(p.worldPosition.X)),
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Y: int32(math.Round(p.worldPosition.Y)),
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}
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err := p.currentAnimation.Draw(step, windowPosition)
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if err != nil {
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return err
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}
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p.animationStep = 1 + p.animationStep
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return nil
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}
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func (p *penguin) SetPosition(vec *vector.Vec2F) {
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p.worldPosition = vec
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}
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func (p *penguin) SetAnimation(id int) {
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a, exists := animation.PenguinAnimations[id]
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if !exists {
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log.Printf("animation does not exist: %v", id)
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a = animation.PenguinAnimations[animation.PENGUIN_DEFAULT]
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}
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if a != p.currentAnimation {
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p.animationStep = 0
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}
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p.currentAnimation = a
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}
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func (p *penguin) MoveX(x float64) {
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p.mx.Lock()
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defer p.mx.Unlock()
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p.direction.X = x
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p.direction.Normalize()
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p.updateAnimation = true
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}
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func (p *penguin) MoveY(y float64) {
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p.mx.Lock()
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defer p.mx.Unlock()
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// (0,0) is the top left, so negative y moves up
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p.direction.Y = y
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p.direction.Normalize()
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p.updateAnimation = true
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}
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func (p *penguin) SetSpeed(s float64) {
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p.speed = s
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}
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func (p *penguin) GetSpeed() float64 {
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return p.speed
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}
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func (p *penguin) SetMoveAnimation() {
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x := p.direction.X
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y := p.direction.Y
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if x == 0 && y == 0 {
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// Stationary
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if p.facingRight {
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p.SetAnimation(animation.PENGUIN_STATIONARY_RIGHT)
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} else {
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p.SetAnimation(animation.PENGUIN_STATIONARY_LEFT)
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}
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} else {
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// Moving
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// Update which direction we're facing
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if x > 0 {
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p.facingRight = true
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} else if x < 0 {
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p.facingRight = false
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}
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// if x == 0, stay facing whatever direction we were previously facing
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if p.facingRight {
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p.SetAnimation(animation.PENGUIN_WALK_RIGHT)
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} else {
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p.SetAnimation(animation.PENGUIN_WALK_LEFT)
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}
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}
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}
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func (p *penguin) Update() error {
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if p.updateAnimation {
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p.SetMoveAnimation()
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p.updateAnimation = false
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}
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x := p.direction.X * p.speed
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y := p.direction.Y * p.speed
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p.worldPosition.X += x
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p.worldPosition.Y += y
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return nil
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}
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