proper player collision and direct hit capability

projectile.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	v "bitbucket.org/hackerbots/vector"
+	"log"
 )
 
 type Projectile struct {
@@ -25,9 +26,18 @@ func (p *Projectile) Tick(g *game) {
 		if player == p.Owner {
 			continue
 		}
-		dist := v.Distance(player.Robot.Position, p.Position)
-		if dist < 5.0 {
+
+		player_rect := v.RectFromPoint(player.Robot.Position, 3)
+		collision, _, _ := v.RectIntersection(player_rect, p.Position, v_scaled)
+		if collision {
 			hit_player = true
+
+			if player.Robot.Health > 0 {
+				// Direct hit causes more damage
+				log.Printf("Direct Hit %v, Dmg:%v", player.Robot.Id, p.Damage)
+
+				player.Robot.Health -= p.Damage
+			}
 		}
 	}
 
@@ -54,12 +64,10 @@ func (p *Projectile) Tick(g *game) {
 
 		// Spawn a splosion
 		splo := &Splosion{
-			Id:        p.Id,
-			Position:  p.Position,
-			Radius:    p.Radius,
-			MaxDamage: 10,
-			MinDamage: 5,
-			Lifespan:  8,
+			Id:       p.Id,
+			Position: p.Position,
+			Radius:   p.Radius,
+			Lifespan: 8,
 		}
 		g.splosions[splo] = true