func (s *State) UpdateViewport(ms float32) {
var (
r = 0.1 * ms
b = s.env.RelativeBounds(s.player.Sprite)
v = s.window.View
x = Min(Max(b.Min.X+v.Dx()/2, s.screenxmin), s.screenxmax)
y = Min(Max(b.Min.Y+v.Dy()/2-s.player.Sprite.Height()/2, s.screenymin), s.screenymax)
dy = y - s.env.Y()
dx = x - s.env.X()
d = twodee.Pt(dx/r, dy/r)
)
/*
fmt.Printf("Bounds %v\n", s.char.GlobalBounds())
fmt.Printf("s.env.RelativeBounds(s.char) %v\n", s.env.RelativeBounds(s.char))
fmt.Printf("s.char.RelativeBounds(s.env) %v\n", s.char.RelativeBounds(s.env))
fmt.Printf("Moving viewport to %v, %v\n", x, y)
*/
if s.player.Sprite.Collide {
// Only smooth motion if the player isn't dying
if ms == 0 || (dy < 1 && dy > -1) {
s.env.MoveTo(twodee.Pt(x, y))
return
}
if dy > 0 {
d.Y = Max(1, dy/30)
} else {
d.Y = Min(-1, dy/30)
}
}
s.env.Move(d)
s.env.MoveTo(twodee.Pt(Round(s.env.X()), Round(s.env.Y())))
}
func (p *Player) Bounce(c *Creature) {
if c.Sprite.Y() >= p.Sprite.Y() {
p.Sprite.VelocityY = -p.JumpSpeed
p.Sprite.Move(twodee.Pt(0, -2)) // Clear collision zone
} else {
p.Sprite.VelocityY = p.JumpSpeed
p.Sprite.Move(twodee.Pt(0, 2)) // Clear collision zone
}
p.Sprite.VelocityX = 0
p.State &= 511 ^ (PLAYER_STOPPED | PLAYER_WALKING)
p.State |= (PLAYER_JUMPING)
}
func (s *State) SetScore(score int) {
s.score = score
s.textscore.SetText(fmt.Sprintf("%v", s.score))
s.textscore.MoveTo(twodee.Pt(s.window.View.Max.X-s.textscore.Width(), 0))
if s.score >= s.nextlife {
s.ChangeMaxLives(1)
s.ChangeLives(1)
s.nextlife *= 2
}
}
func Init(system *twodee.System, window *twodee.Window) (state *State, err error) {
state = &State{}
state.creatures = make([]*Creature, 0)
state.boundaries = make([]*twodee.Sprite, 0)
state.hud = &twodee.Scene{}
state.scene = &twodee.Scene{}
state.env = &twodee.Env{}
state.window = window
state.system = system
textures := []TexInfo{
TexInfo{"level-textures", "assets/level-textures.png", 16},
TexInfo{"enemy-sm-textures", "assets/enemy-sm-textures-fw.png", 0},
TexInfo{"enemy-textures", "assets/enemy-textures-fw.png", 0},
TexInfo{"font1-textures", "assets/font1-textures.png", 0},
TexInfo{"darwin-textures", "assets/darwin-textures.png", 0},
TexInfo{"powerups-textures", "assets/powerups-textures-fw.png", 0},
}
for _, t := range textures {
if err = system.LoadTexture(t.Name, t.Path, twodee.IntNearest, t.Width); err != nil {
return
}
}
BlockHandler := func(block *twodee.EnvBlock, sprite *twodee.Sprite, x float32, y float32) {
state.HandleAddBlock(block, sprite, x, y)
}
opts := twodee.EnvOpts{
Blocks: []*twodee.EnvBlock{
&twodee.EnvBlock{
Color: color.RGBA{153, 102, 0, 255}, // Dirt
Type: FLOOR,
FrameIndex: 0,
Handler: BlockHandler,
},
&twodee.EnvBlock{
Color: color.RGBA{0, 204, 51, 255}, // Green top
Type: FLOOR,
FrameIndex: 1,
Handler: BlockHandler,
},
&twodee.EnvBlock{
Color: color.RGBA{51, 102, 0, 255}, // Top left corner
Type: FLOOR,
FrameIndex: 2,
Handler: BlockHandler,
},
&twodee.EnvBlock{
Color: color.RGBA{51, 153, 0, 255}, // Top right corner
Type: FLOOR,
FrameIndex: 3,
Handler: BlockHandler,
},
&twodee.EnvBlock{
Color: color.RGBA{153, 153, 51, 255}, // Left dirt wall
Type: FLOOR,
FrameIndex: 4,
Handler: BlockHandler,
},
&twodee.EnvBlock{
Color: color.RGBA{153, 153, 102, 255}, // Right dirt wall
Type: FLOOR,
FrameIndex: 5,
Handler: BlockHandler,
},
&twodee.EnvBlock{
Color: color.RGBA{204, 204, 51, 255}, // Left grass cap
Type: FLOOR,
FrameIndex: 6,
Handler: BlockHandler,
},
&twodee.EnvBlock{
Color: color.RGBA{204, 204, 102, 255}, // Right grass cap
Type: FLOOR,
FrameIndex: 7,
Handler: BlockHandler,
},
&twodee.EnvBlock{
Color: color.RGBA{153, 153, 153, 255}, // Rock
Type: FLOOR,
FrameIndex: 8,
Handler: BlockHandler,
},
&twodee.EnvBlock{
Color: color.RGBA{118, 118, 118, 255}, // Rock left
Type: FLOOR,
FrameIndex: 9,
Handler: BlockHandler,
},
&twodee.EnvBlock{
Color: color.RGBA{84, 84, 84, 255}, // Rock right
Type: FLOOR,
FrameIndex: 10,
Handler: BlockHandler,
},
&twodee.EnvBlock{
Color: color.RGBA{0, 0, 0, 255},
Type: START,
FrameIndex: 1,
Handler: BlockHandler,
},
&twodee.EnvBlock{
Color: color.RGBA{51, 51, 51, 255},
Type: BADGUY,
FrameIndex: -1,
Handler: BlockHandler,
},
},
TextureName: "level-textures",
MapPath: "assets/level-fw.png",
BlockWidth: 32,
BlockHeight: 32,
}
if err = state.env.Load(system, opts); err != nil {
return
}
state.system.SetClearColor(102, 204, 255, 255)
state.scene.AddChild(state.env)
state.system.SetKeyCallback(func(k, s int) { state.HandleKeys(k, s) })
state.screenxmin = float32(-state.env.Width()) + state.window.View.Max.X
state.screenxmax = 0
state.screenymin = float32(-state.env.Height()) + state.window.View.Max.Y
state.screenymax = 0
// Do this later so that the hud renders on top of things
state.scene.AddChild(state.hud)
state.livesbar = NewLivesBar(system, 0, 0)
state.hud.AddChild(state.livesbar)
state.healthbar = NewLivesBar(system, 0, 0)
state.healthbar.Availframe = 3
state.healthbar.Emptyframe = 2
state.healthbar.MoveTo(twodee.Pt(0, 24))
state.hud.AddChild(state.healthbar)
state.textscore = system.NewText("font1-textures", 0, 0, 2, "")
state.hud.AddChild(state.textscore)
state.textfps = system.NewText("font1-textures", 0, float32(state.window.View.Max.Y-32), 1, "")
state.hud.AddChild(state.textfps)
state.hud.SetZ(0.5)
state.nextlife = 400
state.SetScore(0)
state.ChangeMaxLives(1)
state.ChangeLives(1)
state.SetMaxHealth(3)
state.ChangeHealth(3)
state.running = true
state.Victory = false
return
}
func (s *State) UpdateSprite(sprite *twodee.Sprite, ms float32) (result int) {
sprite.VelocityY += 0.005 * ms // Gravity
var (
dX = sprite.VelocityX * ms
dY = sprite.VelocityY * ms
b = sprite.RelativeBounds(s.env)
)
if b.Min.X+dX < 0 {
result |= HITLEFT
sprite.VelocityX = 0
sprite.Move(twodee.Pt(1, 0))
dX = 0
}
if b.Max.X+dX > s.env.Width() {
/*
fmt.Printf("HITRIGHT\n")
fmt.Printf("sprite.RelativeBounds(s.env) %v\n", sprite.RelativeBounds(s.env))
fmt.Printf("sprite.LocalBounds() %v\n", sprite.Bounds())
*/
result |= HITRIGHT
sprite.VelocityX = 0
sprite.Move(twodee.Pt(-1, 0))
dX = 0
}
if sprite.Collide {
for _, block := range s.boundaries {
if dX != 0 && !sprite.TestMove(dX, 0, block) {
if sprite.TestMove(dX, -block.Height(), block) {
// Allows running up small bumps
sprite.Move(twodee.Pt(0, -block.Height()))
} else {
if dX < 0 {
sprite.MoveTo(twodee.Pt(block.X()+block.Width(), sprite.Y()))
result |= HITLEFT
} else {
sprite.MoveTo(twodee.Pt(block.X()-sprite.Width(), sprite.Y()))
result |= HITRIGHT
}
sprite.VelocityX = 0
dX = 0
}
}
if dY != 0 && !sprite.TestMove(0, dY, block) {
if dY < 0 {
sprite.MoveTo(twodee.Pt(sprite.X(), block.Y()+block.Height()))
result |= HITTOP
} else {
sprite.MoveTo(twodee.Pt(sprite.X(), block.Y()-sprite.Height()))
result |= HITBOTTOM
}
sprite.VelocityY = 0
dY = 0
}
}
}
if dX != 0 || dY != 0 {
sprite.Move(twodee.Pt(dX, dY))
}
//sprite.MoveTo(twodee.Pt(Round(sprite.X()), Round(sprite.Y())))
return
}
func (p *Player) Respawn() {
p.Sprite.Collide = true
p.Sprite.VelocityY = 0
p.Sprite.VelocityX = 0
p.Sprite.MoveTo(twodee.Pt(p.StartX, p.StartY))
}
