From 96ab55e62ae309f6319f335466036ddc2e572ea0 Mon Sep 17 00:00:00 2001
From: Sander Schobers <sander@schobers.eu>
Date: Mon, 9 Aug 2021 11:29:10 +0200
Subject: [PATCH] Added game over.

---
 cmd/tins2021/levelcontroller.go | 40 ++++++++++++++++++++++++++++-----
 level.go                        | 22 ++++++++++++++++++
 2 files changed, 56 insertions(+), 6 deletions(-)

diff --git a/cmd/tins2021/levelcontroller.go b/cmd/tins2021/levelcontroller.go
index 48b746c..f0935b7 100644
--- a/cmd/tins2021/levelcontroller.go
+++ b/cmd/tins2021/levelcontroller.go
@@ -10,6 +10,7 @@ import (
 
 	"opslag.de/schobers/geom"
 	"opslag.de/schobers/tins2021"
+	"opslag.de/schobers/zntg"
 	"opslag.de/schobers/zntg/ui"
 )
 
@@ -89,6 +90,18 @@ func IsModifierPressed(modifiers ui.KeyModifier, pressed ui.KeyModifier) bool {
 }
 
 func (r levelController) Handle(ctx ui.Context, e ui.Event) bool {
+	switch e := e.(type) {
+	case *ui.KeyDownEvent:
+		switch e.Key {
+		case ui.KeyEscape:
+			r.app.ShowMainMenu(ctx)
+		}
+	}
+
+	if r.Level.GameOver {
+		return false
+	}
+
 	switch e := e.(type) {
 	case *ui.KeyDownEvent:
 		switch e.Key {
@@ -100,10 +113,9 @@ func (r levelController) Handle(ctx ui.Context, e ui.Event) bool {
 			r.Level.MovePlayer(tins2021.DirectionDownRight)
 		case ui.KeyA:
 			r.Level.MovePlayer(tins2021.DirectionDownLeft)
-		case ui.KeyEscape:
-			r.app.ShowMainMenu(ctx)
 		}
 	}
+
 	for _, animations := range r.Animations {
 		animations.Update()
 	}
@@ -111,14 +123,22 @@ func (r levelController) Handle(ctx ui.Context, e ui.Event) bool {
 	r.MovingMonsters.Update()
 	var jumped []geom.Point
 	for pos, animation := range r.MovingMonsters.Values {
-		if animation.Frame < 20 {
+		if animation.Frame < 15 {
 			continue
 		}
 		target := r.Level.MonsterTargets[pos]
-		r.Level.Monsters[target] = r.Level.Monsters[pos]
-		delete(r.Level.MonsterTargets, pos)
-		delete(r.Level.Monsters, pos)
+		if target == r.Level.Player { // player is hit
+			r.Level.DestroyMonster(pos)
+			jumped = append(jumped, pos)
+			r.Level.DecrementLive()
+			continue
+		}
+		if animation.Frame < 20 {
+			continue
+		}
+		r.Level.MoveMonster(target, pos)
 		jumped = append(jumped, pos)
+
 		r.IdleMonsters.Frame(target)
 	}
 	for _, pos := range jumped {
@@ -261,4 +281,12 @@ func (r levelController) Render(ctx ui.Context) {
 	scoreTopLeft.Y += textureWidth
 	heart.Draw(renderer, scoreTopLeft, 0)
 	renderer.Text(scoreFont, scoreTopLeft.Add2D(textureWidth, fontOffsetY), textColor, fmt.Sprintf("x %d", r.Level.Lives))
+
+	if r.Level.GameOver {
+		bounds := r.Bounds()
+		titleFont := ctx.Fonts().Font("title")
+		renderer.FillRectangle(bounds, zntg.MustHexColor(`#0000007F`))
+		offsetY := .5*bounds.Dy() - titleFont.Height()
+		renderer.TextAlign(titleFont, geom.PtF32(.5*bounds.Dx(), offsetY), textColor, "GAME OVER", ui.AlignCenter)
+	}
 }
diff --git a/level.go b/level.go
index ee46fd1..1a01545 100644
--- a/level.go
+++ b/level.go
@@ -14,6 +14,7 @@ type Level struct {
 	Tiles          Tiles
 	Monsters       Monsters
 	MonsterTargets map[geom.Point]geom.Point
+	GameOver       bool
 	Bounds         geom.Rectangle
 }
 
@@ -71,6 +72,23 @@ func (l Level) CanMonsterMoveTo(p geom.Point) bool {
 	return true
 }
 
+func (l *Level) DecrementLive() {
+	l.Lives--
+	if l.Lives == 0 {
+		l.GameOver = true
+	}
+}
+
+func (l *Level) DestroyMonster(pos geom.Point) {
+	delete(l.MonsterTargets, pos)
+	delete(l.Monsters, pos)
+}
+
+func (l *Level) MoveMonster(target, source geom.Point) {
+	l.Monsters[target] = l.Monsters[source]
+	l.DestroyMonster(source)
+}
+
 func (l *Level) MovePlayer(dir Direction) bool {
 	towards, allowed := l.CanPlayerMove(dir)
 	if !allowed {
@@ -86,6 +104,10 @@ func (l *Level) MovePlayer(dir Direction) bool {
 		l.StarsCollected++
 		tile.Star = false
 	}
+	if l.Monsters[towards] != nil {
+		l.DecrementLive()
+		l.DestroyMonster(towards)
+	}
 	return true
 }