Enabled VSync & added setting.

Renamed poppy to anemone.

buyflowerbutton.go

@@ -10,9 +10,8 @@ import (
 type BuyFlowerButton struct {
 	IconButton
 
-	Name        string
-	Price       int
-	Description string
+	FlowerID string
+	Flower   FlowerDescriptor
 
 	hoverAnimation *Animation
 	hoverOffset    int32
@@ -20,27 +19,33 @@ type BuyFlowerButton struct {
 	priceTexture   *Texture
 }
 
-func NewBuyFlowerButton(icon, iconDisabled, name string, price int, description string, isDisabled bool, onClick EventFn) *BuyFlowerButton {
+func NewBuyFlowerButton(icon, iconDisabled, flowerID string, flower FlowerDescriptor, onClick EventContextFn) *BuyFlowerButton {
 	return &BuyFlowerButton{
 		IconButton: *NewIconButtonConfig(icon, onClick, func(b *IconButton) {
 			b.IconDisabled = iconDisabled
-			b.IsDisabled = isDisabled
+			b.IsDisabled = !flower.Unlocked
 		}),
-		Name:        name,
-		Price:       price,
-		Description: description,
+		FlowerID: flowerID,
+		Flower:   flower,
 	}
 }
 
 func (b *BuyFlowerButton) animate() {
 	b.hoverOffset++
 	if b.hoverOffset > b.hoverTexture.Size().X+b.Bounds.W {
-		b.hoverOffset = b.priceTexture.Size().X
+		b.hoverOffset = 0
 	}
 }
 
+func (b *BuyFlowerButton) fmtTooltipText() string {
+	if b.Flower.Unlocked {
+		return fmt.Sprintf("%s - %s - %s", FmtMoney(b.Flower.BuyPrice), b.Flower.Name, "Traits are not known yet.")
+	}
+	return fmt.Sprintf("%s - %s - %s", FmtMoney(b.Flower.BuyPrice), b.Flower.Name, b.Flower.Description)
+}
+
 func (b *BuyFlowerButton) Init(ctx *Context) error {
-	text := fmt.Sprintf("%s - %s - %s", FmtMoney(b.Price), b.Name, b.Description)
+	text := fmt.Sprintf("%s - %s - %s", FmtMoney(b.Flower.BuyPrice), b.Flower.Name, b.Flower.Description)
 	font := ctx.Fonts.Font("small")
 	color := MustHexColor("#ffffff")
 	texture, err := font.Render(ctx.Renderer, text, color)
@@ -48,7 +53,7 @@ func (b *BuyFlowerButton) Init(ctx *Context) error {
 		return err
 	}
 	b.hoverTexture = texture
-	texture, err = font.Render(ctx.Renderer, FmtMoney(b.Price), color)
+	texture, err = font.Render(ctx.Renderer, FmtMoney(b.Flower.BuyPrice), color)
 	if err != nil {
 		return err
 	}
@@ -72,7 +77,7 @@ func (b *BuyFlowerButton) Render(ctx *Context) {
 
 	pos := Pt(b.Bounds.X, b.Bounds.Y)
 	iconTexture.CopyResize(ctx.Renderer, RectSize(pos.X, pos.Y-40, buttonBarWidth, 120))
-	if b.IsMouseOver && !b.IsDisabled {
+	if (b.IsMouseOver && !b.IsDisabled) || b.IsActive {
 		mouseOverTexture.Copy(ctx.Renderer, pos)
 	}
 

cmd/tins2020/res/textures.txt

@@ -4,7 +4,7 @@ control-research: images/genericItem_color_111.png
 
 control-settings: images/gear.png
 control-save: images/save.png
-control-load: images/basket.png
+control-load: images/import.png
 control-quit: images/power.png
 
 control-pause: images/pause.png
@@ -64,32 +64,32 @@ bush-large-2: images/plant_bushLarge_NW.png
 bush-large-3: images/plant_bushLarge_SW.png
 bush-large-4: images/plant_bushLarge_SE.png
 
-flower-poppy-disabled: images/flower_yellowC_NE_disabled.png
-flower-poppy-1: images/flower_yellowC_NE.png
-flower-poppy-2: images/flower_yellowC_NW.png
-flower-poppy-3: images/flower_yellowC_SW.png
-flower-poppy-4: images/flower_yellowC_SE.png
+flower-anemone-disabled: images/flower_yellowC_NE_disabled.png
+flower-anemone-1: images/flower_yellowC_NE.png
+flower-anemone-2: images/flower_yellowC_NW.png
+flower-anemone-3: images/flower_yellowC_SW.png
+flower-anemone-4: images/flower_yellowC_SE.png
 
-flower-red-c-disabled: images/flower_redC_NE_disabled.png
-flower-red-c-1: images/flower_redC_NE.png
-flower-red-c-2: images/flower_redC_NW.png
-flower-red-c-3: images/flower_redC_SW.png
-flower-red-c-4: images/flower_redC_SE.png
+flower-loosestrife-disabled: images/flower_redC_NE_disabled.png
+flower-loosestrife-1: images/flower_redC_NE.png
+flower-loosestrife-2: images/flower_redC_NW.png
+flower-loosestrife-3: images/flower_redC_SW.png
+flower-loosestrife-4: images/flower_redC_SE.png
 
-flower-red-a-disabled: images/flower_redA_NE_disabled.png
-flower-red-a-1: images/flower_redA_NE.png
-flower-red-a-2: images/flower_redA_NW.png
-flower-red-a-3: images/flower_redA_SW.png
-flower-red-a-4: images/flower_redA_SE.png
+flower-tulip-disabled: images/flower_redA_NE_disabled.png
+flower-tulip-1: images/flower_redA_NE.png
+flower-tulip-2: images/flower_redA_NW.png
+flower-tulip-3: images/flower_redA_SW.png
+flower-tulip-4: images/flower_redA_SE.png
 
-flower-purple-a-disabled: images/flower_purpleA_NE_disabled.png
-flower-purple-a-1: images/flower_purpleA_NE.png
-flower-purple-a-2: images/flower_purpleA_NW.png
-flower-purple-a-3: images/flower_purpleA_SW.png
-flower-purple-a-4: images/flower_purpleA_SE.png
+flower-ajuga-disabled: images/flower_purpleA_NE_disabled.png
+flower-ajuga-1: images/flower_purpleA_NE.png
+flower-ajuga-2: images/flower_purpleA_NW.png
+flower-ajuga-3: images/flower_purpleA_SW.png
+flower-ajuga-4: images/flower_purpleA_SE.png
 
-flower-purple-c-disabled: images/flower_purpleC_NE_disabled.png
-flower-purple-c-1: images/flower_purpleC_NE.png
-flower-purple-c-2: images/flower_purpleC_NW.png
-flower-purple-c-3: images/flower_purpleC_SW.png
-flower-purple-c-4: images/flower_purpleC_SE.png
+flower-coneflower-disabled: images/flower_purpleC_NE_disabled.png
+flower-coneflower-1: images/flower_purpleC_NE.png
+flower-coneflower-2: images/flower_purpleC_NW.png
+flower-coneflower-3: images/flower_purpleC_SW.png
+flower-coneflower-4: images/flower_purpleC_SE.png

cmd/tins2020/tins2020.go

@@ -47,7 +47,14 @@ func run() error {
 	if ctx.Settings.Window.Size == nil {
 		ctx.Settings.Window.Size = tins2020.PtPtr(800, 600)
 	}
+	if ctx.Settings.Window.VSync == nil {
+		vsync := true
+		ctx.Settings.Window.VSync = &vsync
+	}
 
+	if *ctx.Settings.Window.VSync {
+		sdl.SetHint(sdl.HINT_RENDER_VSYNC, "1")
+	}
 	sdl.SetHint(sdl.HINT_RENDER_SCALE_QUALITY, "1")
 	window, err := sdl.CreateWindow("TINS 2020",
 		ctx.Settings.Window.Location.X, ctx.Settings.Window.Location.Y,
@@ -93,7 +100,7 @@ func run() error {
 	content := tins2020.NewContainer()
 	app.AddChild(content)
 	app.AddChild(overlays)
-	content.AddChild(tins2020.NewTerrainRenderer(game.Terrain))
+	content.AddChild(tins2020.NewTerrainRenderer(game))
 	err = app.Init(ctx)
 	if err != nil {
 		return err
@@ -118,11 +125,6 @@ func run() error {
 					app.Arrange(ctx, tins2020.Rect(0, 0, w, h))
 					ctx.Settings.Window.Size = tins2020.PtPtr(w, h)
 				}
-			case *sdl.KeyboardEvent:
-				switch e.Keysym.Sym {
-				case sdl.K_ESCAPE:
-					ctx.Quit()
-				}
 			}
 			app.Handle(ctx, event)
 		}

control.go

@@ -9,11 +9,13 @@ type Control interface {
 	Render(*Context)
 }
 
-type EventFn func(*Context)
+type EventContextFn func(*Context)
 
-type EmptyEventFn func()
+type EventFn func()
 
-func EmptyEvent(fn EmptyEventFn) EventFn {
+type EventInterfaceFn func(interface{})
+
+func EmptyEvent(fn EventFn) EventContextFn {
 	return func(*Context) { fn() }
 }
 
@@ -22,7 +24,7 @@ type ControlBase struct {
 
 	IsMouseOver bool
 
-	OnLeftMouseButtonClick EventFn
+	OnLeftMouseButtonClick EventContextFn
 }
 
 func (b *ControlBase) Arrange(ctx *Context, bounds Rectangle) { b.Bounds = bounds }
@@ -40,7 +42,7 @@ func (b *ControlBase) Handle(ctx *Context, event sdl.Event) {
 	}
 }
 
-func (b *ControlBase) Invoke(ctx *Context, fn EventFn) {
+func (b *ControlBase) Invoke(ctx *Context, fn EventContextFn) {
 	if fn == nil {
 		return
 	}

eventhandler.go

@@ -0,0 +1,33 @@
+package tins2020
+
+func NewEvents() *Events {
+	return &Events{events: map[int]EventInterfaceFn{}}
+}
+
+type Events struct {
+	nextID int
+	events map[int]EventInterfaceFn
+}
+
+type EventHandler interface {
+	Register(EventFn) int
+	RegisterItf(EventInterfaceFn) int
+	Unregister(int)
+}
+
+func (h *Events) Notify(state interface{}) {
+	for _, event := range h.events {
+		event(state)
+	}
+}
+
+func (h *Events) Register(fn EventFn) int { return h.RegisterItf(func(interface{}) { fn() }) }
+
+func (h *Events) RegisterItf(fn EventInterfaceFn) int {
+	id := h.nextID
+	h.nextID++
+	h.events[id] = fn
+	return id
+}
+
+func (h *Events) Unregister(id int) { delete(h.events, id) }

flower.go

@@ -1,6 +1,7 @@
 package tins2020
 
 type Flower struct {
+	ID     string
 	Traits FlowerTraits
 }
 
@@ -31,17 +32,68 @@ type FlowerResistance struct {
 	Wet  float32
 }
 
-// NewPoppyTraits creates the traits of a poppy, a very generic flower that thrives in a moderate climate.
-func NewPoppyTraits() FlowerTraits {
+// NewAnemoneTraits creates the traits of a anemone, a very generic flower that thrives in a moderate climate.
+func NewAnemoneTraits() FlowerTraits {
 	return FlowerTraits{
-		// Spread: 0.0011,
-		Spread: 0.0011,
+		Spread: 0.0004,
 		Life:   0.99993,
 		Resistance: FlowerResistance{
-			Cold: 0.5,
-			Hot:  0.5,
+			Cold: 0.7,
+			Hot:  0.7,
 			Dry:  0.5,
 			Wet:  0.5,
 		},
 	}
 }
+
+func NewLoosestrifeTraits() FlowerTraits {
+	return FlowerTraits{
+		Spread: 0.0005,
+		Life:   0.99993,
+		Resistance: FlowerResistance{
+			Cold: 0.7,
+			Hot:  0.6,
+			Dry:  0.5,
+			Wet:  0.8,
+		},
+	}
+}
+
+func NewConeflowerTraits() FlowerTraits {
+	return FlowerTraits{
+		Spread: 0.0005,
+		Life:   0.99993,
+		Resistance: FlowerResistance{
+			Cold: 0.7,
+			Hot:  0.8,
+			Dry:  0.8,
+			Wet:  0.5,
+		},
+	}
+}
+
+func NewTulipTraits() FlowerTraits {
+	return FlowerTraits{
+		Spread: 0.0005,
+		Life:   0.99993,
+		Resistance: FlowerResistance{
+			Cold: 0.8,
+			Hot:  0.6,
+			Dry:  0.5,
+			Wet:  0.9,
+		},
+	}
+}
+
+func NewAjugaTraits() FlowerTraits {
+	return FlowerTraits{
+		Spread: 0.0007,
+		Life:   0.99991,
+		Resistance: FlowerResistance{
+			Cold: 0.9,
+			Hot:  0.5,
+			Dry:  0.75,
+			Wet:  0.75,
+		},
+	}
+}

game.go

@@ -1,6 +1,7 @@
 package tins2020
 
 import (
+	"log"
 	"math/rand"
 	"time"
 )
@@ -8,8 +9,13 @@ import (
 type Game struct {
 	Balance          int
 	Speed            GameSpeed
+	SpeedBeforePause GameSpeed
+	Herbarium        Herbarium
 	Terrain          *Map
 
+	tool         Tool
+	toolChanged  *Events
+	speedChanged *Events
 	simulation   Animation
 }
 
@@ -21,29 +27,6 @@ const (
 	GameSpeedPaused           = "paused"
 )
 
-type Map struct {
-	Temp    NoiseMap
-	Humid   NoiseMap
-	Variant NoiseMap
-	PlaceX  NoiseMap // displacement map of props
-	PlaceY  NoiseMap
-
-	Flowers map[Point]Flower
-}
-
-func (m *Map) AddFlower(pos Point, traits FlowerTraits) {
-	m.Flowers[pos] = m.NewFlower(pos, traits)
-}
-
-func (m *Map) NewFlower(pos Point, traits FlowerTraits) Flower {
-	flower := Flower{
-		Traits: traits,
-	}
-	temp, humid := float32(m.Temp.Value(pos.X, pos.Y)), float32(m.Humid.Value(pos.X, pos.Y))
-	flower.Traits.UpdateModifier(temp, humid)
-	return flower
-}
-
 const simulationInterval = 120 * time.Millisecond
 const fastSimulationInterval = 40 * time.Millisecond
 
@@ -56,16 +39,91 @@ func NewGame() *Game {
 		PlaceY:  NewRandomNoiseMap(rand.Int63()),
 		Flowers: map[Point]Flower{},
 	}
-	terrain.AddFlower(Pt(0, 0), NewPoppyTraits())
+	herbarium := NewHerbarium()
+	herbarium.Add("anemone", FlowerDescriptor{
+		Name:         "Anemone",
+		Description:  "A very generic flower that thrives in a temperate climate.",
+		IconTemplate: "flower-anemone-%s",
+		BuyPrice:     10,
+		SellPrice:    3,
+		Traits:       NewAnemoneTraits(),
+		Unlocked:     true,
+	})
+	herbarium.Add("loosestrife", FlowerDescriptor{
+		Name:         "Loosestrife",
+		Description:  "A simple flower that will spread in temperate and wet climates.",
+		IconTemplate: "flower-loosestrife-%s",
+		BuyPrice:     100,
+		SellPrice:    20,
+		Traits:       NewLoosestrifeTraits(),
+		Unlocked:     false,
+	})
+	herbarium.Add("coneflower", FlowerDescriptor{
+		Name:         "Coneflower",
+		Description:  "A beautifull flower that can withstand hotter climates.",
+		IconTemplate: "flower-coneflower-%s",
+		BuyPrice:     500,
+		SellPrice:    100,
+		Traits:       NewConeflowerTraits(),
+		Unlocked:     false,
+	})
+	herbarium.Add("tulip", FlowerDescriptor{
+		Name:         "Tulip",
+		Description:  "A lovely flower that prefers a bit humid and colder climates.",
+		IconTemplate: "flower-tulip-%s",
+		BuyPrice:     20000,
+		SellPrice:    5000,
+		Traits:       NewTulipTraits(),
+		Unlocked:     false,
+	})
+	herbarium.Add("ajuga", FlowerDescriptor{
+		Name:         "Ajuga",
+		Description:  "A flower that is resitant to cold climates and spreads very easily.",
+		IconTemplate: "flower-ajuga-%s",
+		BuyPrice:     100000,
+		SellPrice:    10000,
+		Traits:       NewAjugaTraits(),
+		Unlocked:     false,
+	})
 	return &Game{
 		Speed:     GameSpeedNormal,
 		Balance:   100,
 		Terrain:   terrain,
+		Herbarium: herbarium,
 
+		speedChanged: NewEvents(),
+		toolChanged:  NewEvents(),
 		simulation:   NewAnimation(time.Millisecond * 10),
 	}
 }
 
+func (g *Game) selectTool(t Tool) {
+	g.tool = t
+	g.toolChanged.Notify(t)
+}
+
+func (g *Game) setSpeed(speed GameSpeed) {
+	if speed == g.Speed {
+		return
+	}
+	if speed == GameSpeedPaused {
+		g.SpeedBeforePause = g.Speed
+	}
+	g.Speed = speed
+	g.speedChanged.Notify(speed)
+
+	switch speed {
+	case GameSpeedPaused:
+		g.simulation.Pause()
+	case GameSpeedNormal:
+		g.simulation.SetInterval(simulationInterval)
+		g.simulation.Run()
+	case GameSpeedFast:
+		g.simulation.SetInterval(fastSimulationInterval)
+		g.simulation.Run()
+	}
+}
+
 func (g *Game) tick() {
 	randomNeighbor := func(pos Point) Point {
 		switch rand.Intn(4) {
@@ -86,36 +144,87 @@ func (g *Game) tick() {
 			dst := randomNeighbor(pos)
 			if _, ok := g.Terrain.Flowers[dst]; !ok {
 				if _, ok := flowers[dst]; !ok {
-					flowers[dst] = g.Terrain.NewFlower(dst, flower.Traits)
+					flowers[dst] = g.Terrain.NewFlower(dst, flower.ID, flower.Traits)
 				}
 			}
 		}
-		if rand.Float32() < flower.Traits.Life*flower.Traits.LifeModifier {
+		if Sqr32(rand.Float32()) < flower.Traits.Life*flower.Traits.LifeModifier {
 			flowers[pos] = flower
 		}
 	}
 	g.Terrain.Flowers = flowers
 }
 
-func (g *Game) Pause() {
-	g.Speed = GameSpeedPaused
-	g.simulation.Pause()
+func (g *Game) CancelTool() {
+	g.selectTool(nil)
 }
 
-func (g *Game) Run() {
-	g.Speed = GameSpeedNormal
-	g.simulation.SetInterval(simulationInterval)
-	g.simulation.Run()
+func (g *Game) Dig(tile Point) {
+	id := g.Terrain.DigFlower(tile)
+	desc, ok := g.Herbarium.Find(id)
+	if !ok {
+		return
+	}
+	g.Balance += desc.SellPrice
 }
 
-func (g *Game) RunFast() {
-	g.Speed = GameSpeedFast
-	g.simulation.SetInterval(fastSimulationInterval)
-	g.simulation.Run()
+func (g *Game) Pause() { g.setSpeed(GameSpeedPaused) }
+
+func (g *Game) PlantFlower(id string, tile Point) {
+	flower, ok := g.Herbarium.Find(id)
+	if !ok {
+		log.Println("user was able to plant a flower that doesn't exist")
+		return
 	}
+	if flower.BuyPrice > g.Balance {
+		// TODO: notify user of insufficient balance?
+		return
+	}
+	g.Balance -= flower.BuyPrice
+	g.Terrain.AddFlower(tile, id, flower.Traits)
+}
+
+func (g *Game) Resume() { g.setSpeed(g.SpeedBeforePause) }
+
+func (g *Game) Run() { g.setSpeed(GameSpeedNormal) }
+
+func (g *Game) RunFast() { g.setSpeed(GameSpeedFast) }
+
+func (g *Game) SelectPlantFlowerTool(id string) {
+	g.selectTool(&PlantFlowerTool{FlowerID: id})
+}
+
+func (g *Game) SelectShovel() {
+	g.selectTool(&ShovelTool{})
+}
+
+func (g *Game) SelectResearch() {
+	g.Pause()
+}
+
+func (g *Game) SpeedChanged() EventHandler { return g.speedChanged }
+
+func (g *Game) TogglePause() {
+	if g.Speed == GameSpeedPaused {
+		g.Resume()
+	} else {
+		g.Pause()
+	}
+}
+
+func (g *Game) Tool() Tool { return g.tool }
+
+func (g *Game) ToolChanged() EventHandler { return g.toolChanged }
 
 func (g *Game) Update() {
 	for g.simulation.Animate() {
 		g.tick()
 	}
 }
+
+func (g *Game) UserClickedTile(pos Point) {
+	if g.tool == nil {
+		return
+	}
+	g.tool.ClickedTile(g, pos)
+}

gamecontrols.go

@@ -1,5 +1,9 @@
 package tins2020
 
+import (
+	"github.com/veandco/go-sdl2/sdl"
+)
+
 type GameControls struct {
 	Container
 
@@ -8,63 +12,92 @@ type GameControls struct {
 	menu       ButtonBar
 	top        ButtonBar
 	flowers    ButtonBar
+	otherTools ButtonBar
 
 	pause   *IconButton
 	run     *IconButton
 	runFast *IconButton
+
+	shovel   *IconButton
+	research *IconButton
 }
 
 func NewGameControls(game *Game) *GameControls {
 	return &GameControls{game: game}
 }
 
-func (c *GameControls) updateSpeedControls() {
-	disable := func(b *IconButton, speed GameSpeed) {
-		b.IsDisabled = speed == c.game.Speed
+func (c *GameControls) createBuyFlowerButton(id string) *BuyFlowerButton {
+	flower, _ := c.game.Herbarium.Find(id)
+	return NewBuyFlowerButton(
+		flower.IconTemplate.Variant(1),
+		flower.IconTemplate.Disabled(),
+		id,
+		flower,
+		EmptyEvent(func() {
+			c.game.SelectPlantFlowerTool(id)
+		}),
+	)
+}
+
+func (c *GameControls) speedChanged(state interface{}) {
+	speed := state.(GameSpeed)
+	disable := func(b *IconButton, expected GameSpeed) {
+		b.IsDisabled = speed == expected
 	}
 	disable(c.pause, GameSpeedPaused)
 	disable(c.run, GameSpeedNormal)
 	disable(c.runFast, GameSpeedFast)
 }
 
+func (c *GameControls) toolChanged(state interface{}) {
+	tool, _ := state.(Tool)
+	var flowerID string
+	if tool, ok := tool.(*PlantFlowerTool); ok {
+		flowerID = tool.FlowerID
+	}
+	for _, control := range c.flowers.Buttons {
+		button := control.(*BuyFlowerButton)
+		button.IsActive = button.FlowerID == flowerID
+	}
+	_, shovel := tool.(*ShovelTool)
+	c.shovel.IsActive = shovel
+}
+
 func (c *GameControls) Arrange(ctx *Context, bounds Rectangle) {
 	c.Bounds = bounds
 	c.menu.Arrange(ctx, RectSize(bounds.X, bounds.Y, buttonBarWidth, bounds.H))
 	c.top.Arrange(ctx, Rect(bounds.X+bounds.W/2+8, bounds.Y, bounds.Right(), bounds.Y+64))
 	c.flowers.Arrange(ctx, RectSize(bounds.Right()-buttonBarWidth, bounds.Y, buttonBarWidth, bounds.H))
-}
-
-func (c *GameControls) buyPoppy(ctx *Context) {
-	c.game.Balance -= 10
+	c.otherTools.Arrange(ctx, RectSize(bounds.Right()-buttonBarWidth, bounds.Bottom()-2*buttonBarWidth, buttonBarWidth, 2*buttonBarWidth))
 }
 
 func (c *GameControls) Init(ctx *Context) error {
+	c.game.SpeedChanged().RegisterItf(c.speedChanged)
+	c.game.ToolChanged().RegisterItf(c.toolChanged)
+
 	c.flowers.Background = MustHexColor("#356dad") // brown alternative? #4ac69a
-	c.flowers.Buttons = []Control{
-		NewBuyFlowerButton("flower-poppy-1", "flower-poppy-disabled", "Poppy", 10, "A very generic flower that thrives in a moderate climate.", false, c.buyPoppy),
-		NewBuyFlowerButton("flower-red-c-1", "flower-poppy-disabled", "Unknown", 100, "Traits are not known yet.", true, nil),
+
+	for _, id := range c.game.Herbarium.Flowers() {
+		c.flowers.Buttons = append(c.flowers.Buttons, c.createBuyFlowerButton(id))
 	}
 
 	c.top.Orientation = OrientationHorizontal
 	c.pause = NewIconButtonConfig("control-pause", EmptyEvent(func() {
 		c.game.Pause()
-		c.updateSpeedControls()
 	}), func(b *IconButton) {
 		b.IconDisabled = "control-pause-disabled"
 	})
 	c.run = NewIconButtonConfig("control-run", EmptyEvent(func() {
 		c.game.Run()
-		c.updateSpeedControls()
 	}), func(b *IconButton) {
 		b.IconDisabled = "control-run-disabled"
 	})
 	c.runFast = NewIconButtonConfig("control-run-fast", EmptyEvent(func() {
 		c.game.RunFast()
-		c.updateSpeedControls()
 	}), func(b *IconButton) {
 		b.IconDisabled = "control-run-fast-disabled"
 	})
-	c.updateSpeedControls()
+	c.speedChanged(c.game.Speed)
 	c.top.Buttons = []Control{c.pause, c.run, c.runFast}
 
 	c.menu.Background = MustHexColor("#356dad")
@@ -74,12 +107,45 @@ func (c *GameControls) Init(ctx *Context) error {
 		NewIconButton("control-load", EmptyEvent(func() {})),
 	}
 
+	c.shovel = NewIconButtonConfig("control-shovel", func(*Context) { c.game.SelectShovel() }, func(b *IconButton) { b.IconHeight = 48 })
+	c.research = NewIconButtonConfig("control-research", func(*Context) { c.game.SelectResearch() }, func(b *IconButton) { b.IconHeight = 48 })
+	c.otherTools.Buttons = []Control{c.shovel, c.research}
+
 	c.Container.AddChild(&c.menu)
 	c.Container.AddChild(&c.top)
 	c.Container.AddChild(&c.flowers)
+	c.Container.AddChild(&c.otherTools)
 	return c.Container.Init(ctx)
 }
 
+func (c *GameControls) Handle(ctx *Context, event sdl.Event) {
+	c.Container.Handle(ctx, event)
+
+	switch e := event.(type) {
+	case *sdl.KeyboardEvent:
+		if e.Type == sdl.KEYDOWN {
+			switch e.Keysym.Sym {
+			case sdl.K_SPACE:
+				c.game.TogglePause()
+			case sdl.K_1:
+				c.game.Run()
+			case sdl.K_2:
+				c.game.RunFast()
+			case sdl.K_d:
+				c.game.SelectShovel()
+			case sdl.K_r:
+				c.game.SelectResearch()
+			case sdl.K_ESCAPE:
+				if c.game.Tool() == nil {
+					// TODO: display menu
+				} else {
+					c.game.CancelTool()
+				}
+			}
+		}
+	}
+}
+
 func (c *GameControls) Render(ctx *Context) {
 	topBar := MustHexColor("#0000007f")
 	ctx.Renderer.SetDrawColor(topBar.R, topBar.G, topBar.B, topBar.A)

herbarium.go

@@ -0,0 +1,46 @@
+package tins2020
+
+import (
+	"fmt"
+	"strconv"
+)
+
+type Herbarium struct {
+	flowers map[string]FlowerDescriptor
+	order   []string
+}
+
+func NewHerbarium() Herbarium {
+	return Herbarium{map[string]FlowerDescriptor{}, nil}
+}
+
+type FlowerDescriptor struct {
+	Name        string
+	Description string
+	BuyPrice    int
+	SellPrice   int
+
+	Unlocked     bool
+	IconTemplate IconTemplate
+	Traits       FlowerTraits
+}
+
+type IconTemplate string
+
+func (t IconTemplate) Disabled() string { return t.Fmt("disabled") }
+
+func (t IconTemplate) Fmt(s string) string { return fmt.Sprintf(string(t), s) }
+
+func (t IconTemplate) Variant(i int) string { return t.Fmt(strconv.Itoa(i)) }
+
+func (h *Herbarium) Add(id string, desc FlowerDescriptor) {
+	h.flowers[id] = desc
+	h.order = append(h.order, id)
+}
+
+func (h *Herbarium) Find(id string) (FlowerDescriptor, bool) {
+	flower, ok := h.flowers[id]
+	return flower, ok
+}
+
+func (h *Herbarium) Flowers() []string { return h.order }

iconbutton.go

@@ -5,9 +5,11 @@ type IconButton struct {
 
 	Icon         string
 	IconDisabled string
+	IconHeight   int32
 	IconScale    Scale
 	IconWidth    int32
 
+	IsActive   bool
 	IsDisabled bool
 }
 
@@ -18,7 +20,7 @@ const (
 	ScaleStretch
 )
 
-func NewIconButton(icon string, onClick EventFn) *IconButton {
+func NewIconButton(icon string, onClick EventContextFn) *IconButton {
 	return &IconButton{
 		ControlBase: ControlBase{
 			OnLeftMouseButtonClick: onClick,
@@ -27,7 +29,7 @@ func NewIconButton(icon string, onClick EventFn) *IconButton {
 	}
 }
 
-func NewIconButtonConfig(icon string, onClick EventFn, configure func(*IconButton)) *IconButton {
+func NewIconButtonConfig(icon string, onClick EventContextFn, configure func(*IconButton)) *IconButton {
 	button := NewIconButton(icon, onClick)
 	configure(button)
 	return button
@@ -51,12 +53,14 @@ func (b *IconButton) Render(ctx *Context) {
 		size := iconTexture.Size()
 		if b.IconWidth != 0 {
 			size = Pt(b.IconWidth, b.IconWidth*size.Y/size.X)
+		} else if b.IconHeight != 0 {
+			size = Pt(b.IconHeight*size.X/size.Y, b.IconHeight)
 		}
 		iconTexture.CopyResize(ctx.Renderer, RectSize(b.Bounds.X+(b.Bounds.W-size.X)/2, b.Bounds.Y+(b.Bounds.H-size.Y)/2, size.X, size.Y))
 	} else {
 		iconTexture.CopyResize(ctx.Renderer, b.Bounds)
 	}
-	if b.IsMouseOver && !b.IsDisabled {
+	if (b.IsMouseOver && !b.IsDisabled) || b.IsActive {
 		mouseOverTexture.CopyResize(ctx.Renderer, b.Bounds)
 	}
 }

map.go

@@ -0,0 +1,34 @@
+package tins2020
+
+type Map struct {
+	Temp    NoiseMap
+	Humid   NoiseMap
+	Variant NoiseMap
+	PlaceX  NoiseMap // displacement map of props
+	PlaceY  NoiseMap
+
+	Flowers map[Point]Flower
+}
+
+func (m *Map) AddFlower(pos Point, id string, traits FlowerTraits) {
+	m.Flowers[pos] = m.NewFlower(pos, id, traits)
+}
+
+func (m *Map) DigFlower(pos Point) string {
+	flower, ok := m.Flowers[pos]
+	if !ok {
+		return ""
+	}
+	delete(m.Flowers, pos)
+	return flower.ID
+}
+
+func (m *Map) NewFlower(pos Point, id string, traits FlowerTraits) Flower {
+	flower := Flower{
+		ID:     id,
+		Traits: traits,
+	}
+	temp, humid := float32(m.Temp.Value(pos.X, pos.Y)), float32(m.Humid.Value(pos.X, pos.Y))
+	flower.Traits.UpdateModifier(temp, humid)
+	return flower
+}

math.go

@@ -50,4 +50,6 @@ func Min32(a, b float32) float32 {
 
 func Round32(x float32) float32 { return float32(math.Round(float64(x))) }
 
+func Sqr32(x float32) float32 { return x * x }
+
 func Sqrt32(x float32) float32 { return float32(math.Sqrt(float64(x))) }

point.go

@@ -10,6 +10,8 @@ func (p Point) Add(q Point) Point { return Pt(p.X+q.X, p.Y+q.Y) }
 
 func (p Point) In(r Rectangle) bool { return r.IsPointInsidePt(p) }
 
+func (p Point) Sub(q Point) Point { return Pt(p.X-q.X, p.Y-q.Y) }
+
 func (p Point) ToPtF() PointF { return PtF(float32(p.X), float32(p.Y)) }
 
 type PointF struct {

projection.go

@@ -39,6 +39,11 @@ func (p *projection) screenToMap(x, y int32) PointF {
 	return p.center.Add(pos)
 }
 
+func (p *projection) screenToMapInt(x, y int32) Point {
+	pos := p.screenToMap(x, y)
+	return Pt(int32(Round32(pos.X)), int32(Round32(pos.Y)))
+}
+
 func (p *projection) screenToMapRel(x, y int32) PointF {
 	normX := p.zoomInv * float32(x)
 	normY := p.zoomInv * float32(y)

settings.go

@@ -32,4 +32,5 @@ func (s *Settings) Store() error {
 type WindowSettings struct {
 	Location *Point
 	Size     *Point
+	VSync    *bool
 }

terrainrenderer.go

@@ -7,21 +7,39 @@ import (
 )
 
 type terrainRenderer struct {
+	game    *Game
 	terrain *Map
 	hover   *Point
 	project projection
 
-	interact interaction
+	drag Drageable
 }
 
-type interaction struct {
-	mousePos      Point
-	mouseLeftDown bool
-	mouseDrag     *Point
+type Drageable struct {
+	start   *Point
+	dragged bool
 }
 
-func NewTerrainRenderer(terrain *Map) Control {
-	return &terrainRenderer{terrain: terrain, project: newProjection()}
+func (d *Drageable) Cancel() { d.start = nil }
+
+func (d *Drageable) IsDragging() bool { return d.start != nil }
+
+func (d *Drageable) HasDragged() bool { return d.dragged }
+
+func (d *Drageable) Move(p Point) Point {
+	delta := p.Sub(*d.start)
+	d.start = &p
+	d.dragged = true
+	return delta
+}
+
+func (d *Drageable) Start(p Point) {
+	d.start = &p
+	d.dragged = false
+}
+
+func NewTerrainRenderer(game *Game) Control {
+	return &terrainRenderer{game: game, terrain: game.Terrain, project: newProjection()}
 }
 
 func (r *terrainRenderer) Arrange(ctx *Context, _ Rectangle) {
@@ -33,30 +51,48 @@ func (r *terrainRenderer) Init(ctx *Context) error {
 	return nil
 }
 
+func isControlKeyDown() bool {
+	state := sdl.GetKeyboardState()
+	return state[sdl.SCANCODE_LCTRL] == 1 || state[sdl.SCANCODE_RCTRL] == 1
+}
+
 func (r *terrainRenderer) Handle(ctx *Context, event sdl.Event) {
 	switch e := event.(type) {
 	case *sdl.MouseButtonEvent:
 		if r.project.windowInteractRect.IsPointInside(e.X, e.Y) {
+			if e.Type == sdl.MOUSEBUTTONDOWN {
+				if e.Button == sdl.BUTTON_MIDDLE || (e.Button == sdl.BUTTON_LEFT && isControlKeyDown()) {
+					if !r.drag.IsDragging() {
+						r.drag.Start(Pt(e.X, e.Y))
+					}
+				}
 				if e.Button == sdl.BUTTON_LEFT {
-				r.interact.mouseLeftDown = e.Type == sdl.MOUSEBUTTONDOWN
-				if r.interact.mouseLeftDown && r.interact.mouseDrag == nil {
-					r.interact.mouseDrag = PtPtr(e.X, e.Y)
-				} else if !r.interact.mouseLeftDown && r.interact.mouseDrag != nil {
-					r.interact.mouseDrag = nil
+					pos := r.project.screenToMapInt(e.X, e.Y)
+					r.game.UserClickedTile(pos)
+				}
+				if e.Button == sdl.BUTTON_RIGHT {
+					if e.Type == sdl.MOUSEBUTTONDOWN {
+						r.game.CancelTool()
+					}
+				}
+			}
+			if e.Type == sdl.MOUSEBUTTONUP {
+				if r.drag.IsDragging() {
+					r.drag.Cancel()
 				}
 			}
 		}
 	case *sdl.MouseMotionEvent:
 		if r.project.windowInteractRect.IsPointInside(e.X, e.Y) {
-			hover := r.project.screenToMap(e.X, e.Y)
-			r.hover = PtPtr(int32(Round32(hover.X)), int32(Round32(hover.Y)))
+			hover := r.project.screenToMapInt(e.X, e.Y)
+			r.hover = &hover
 		} else {
 			r.hover = nil
 		}
-		if r.interact.mouseDrag != nil {
-			r.project.center = r.project.center.Sub(r.project.screenToMapRel(e.X-r.interact.mouseDrag.X, e.Y-r.interact.mouseDrag.Y))
+		if r.drag.IsDragging() {
+			delta := r.drag.Move(Pt(e.X, e.Y))
+			r.project.center = r.project.center.Sub(r.project.screenToMapRel(delta.X, delta.Y))
 			r.project.update(ctx.Renderer)
-			r.interact.mouseDrag = PtPtr(e.X, e.Y)
 		}
 	case *sdl.MouseWheelEvent:
 		if r.hover != nil {
@@ -143,9 +179,10 @@ func (r *terrainRenderer) Render(ctx *Context) {
 
 	toItemTexture := func(x, y int32) *Texture {
 		variant := r.terrain.Variant.Value(x, y)
-		_, ok := r.terrain.Flowers[Pt(x, y)]
+		flower, ok := r.terrain.Flowers[Pt(x, y)]
 		if ok {
-			return variantToTexture("flower-poppy-%d", variant)
+			desc, _ := r.game.Herbarium.Find(flower.ID)
+			return ctx.Textures.Texture(desc.IconTemplate.Variant(variantToInt(variant)))
 		}
 		temp := r.terrain.Temp.Value(x, y)
 		humid := r.terrain.Humid.Value(x, y)

tools.go

@@ -0,0 +1,24 @@
+package tins2020
+
+type Tool interface {
+	Type() string
+	ClickedTile(*Game, Point)
+}
+
+type PlantFlowerTool struct {
+	FlowerID string
+}
+
+func (t *PlantFlowerTool) Type() string { return "plant-flower" }
+
+func (t *PlantFlowerTool) ClickedTile(game *Game, tile Point) {
+	game.PlantFlower(t.FlowerID, tile)
+}
+
+type ShovelTool struct{}
+
+func (t *ShovelTool) Type() string { return "shovel" }
+
+func (t *ShovelTool) ClickedTile(game *Game, tile Point) {
+	game.Dig(tile)
+}