dino: add a more precise hit box to the dino

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>

diff --git a/examples/mnit_dino/src/game_logic.nit b/examples/mnit_dino/src/game_logic.nit
index 1db0880..b148778 100644 (file)
--- a/examples/mnit_dino/src/game_logic.nit
+++ b/examples/mnit_dino/src/game_logic.nit
@@ -159,13 +159,24 @@ end
 class Entity
        super Turnable
 
-       fun run_over_distance: Int do return 500
+       fun run_over_distance_x: Int do return 50
+       fun run_over_distance_y: Int do return 16
+
        var pos = new GamePos( 0, 0 )
 
        fun squared_dist_with_dino( game : Game ) : Int
        do
                return pos.squared_dist_with( game.dino.pos )
        end
+
+       fun under_dino(game: Game): Bool
+       do
+               var dy = pos.y - game.dino.pos.y
+               if dy.abs > run_over_distance_y then return false
+
+               var dx = pos.x - game.dino.pos.x
+               return dx.abs <= run_over_distance_x
+       end
 end
 
 class MovingEntity
@@ -233,8 +244,7 @@ class Dino
                end
 
                for i in t.game.items_on_ground do
-                       var dwd = i.squared_dist_with_dino(t.game)
-                       if dwd < i.run_over_distance then
+                       if i.under_dino(t.game) then
                                t.game.items_on_ground.remove i
                                t.game.entities.remove i
                        end
@@ -272,9 +282,7 @@ class Caveman
        redef fun do_turn( t )
        do
                if is_alive then
-                       var dwd = squared_dist_with_dino( t.game )
-
-                       if dwd < run_over_distance then
+                       if under_dino(t.game) then
                                if t.game.dino.is_alive then die(t)
                                return
                        else if is_afraid( t ) then
@@ -282,6 +290,7 @@ class Caveman
                        else if t.game.dino.life <= 0 then
                                # dino is dead, chill
                        else
+                               var dwd = squared_dist_with_dino( t.game )
                                if dwd < fear_distance then
                                        afraid_until = t.nbr + fear_duration