cyberarm/i-mic-fps
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Small optimization that caches bounding boxes for GameObject collision detection

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Cyberarm
2018-12-10 13:39:29 -06:00
parent 7f8f534633
commit 74b0a0ef6f
1 changed files with 20 additions and 3 deletions
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23
lib/objects/game_object.rb
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@@ -9,7 +9,7 @@ class IMICFPS
attr_accessor :x, :y, :z, :scale attr_accessor :x, :y, :z, :scale
attr_accessor :visible, :renderable, :backface_culling attr_accessor :visible, :renderable, :backface_culling
attr_accessor :x_rotation, :y_rotation, :z_rotation attr_accessor :x_rotation, :y_rotation, :z_rotation
attr_reader :model, :name, :debug_color, :terrain, :width, :height, :depth attr_reader :model, :name, :debug_color, :terrain, :width, :height, :depth, :last_x, :last_y, :last_z, :normalized_bounding_box
def initialize(x: 0, y: 0, z: 0, bound_model: nil, scale: MODEL_METER_SCALE, backface_culling: true, auto_manage: true, terrain: nil) def initialize(x: 0, y: 0, z: 0, bound_model: nil, scale: MODEL_METER_SCALE, backface_culling: true, auto_manage: true, terrain: nil)
@x,@y,@z,@scale = x,y,z,scale @x,@y,@z,@scale = x,y,z,scale
@bound_model = bound_model @bound_model = bound_model
@@ -19,8 +19,10 @@ class IMICFPS
@x_rotation,@y_rotation,@z_rotation = 0,0,0 @x_rotation,@y_rotation,@z_rotation = 0,0,0
@debug_color = Color.new(0.0, 1.0, 0.0) @debug_color = Color.new(0.0, 1.0, 0.0)
@terrain = terrain @terrain = terrain
@width, @height, @depth = 0,0,0 @width, @height, @depth = 0,0,0
@delta_time = Gosu.milliseconds @delta_time = Gosu.milliseconds
@last_x, @last_y, @last_z = @x, @y, @z
ObjectManager.add_object(self) if auto_manage ObjectManager.add_object(self) if auto_manage
setup setup
@@ -28,6 +30,7 @@ class IMICFPS
if @bound_model if @bound_model
@bound_model.model.game_object = self @bound_model.model.game_object = self
@bound_model.model.objects.each {|o| o.scale = self.scale} @bound_model.model.objects.each {|o| o.scale = self.scale}
@normalized_bounding_box = normalize_bounding_box_with_offset(model.bounding_box)
box = normalize_bounding_box(@bound_model.model.bounding_box) box = normalize_bounding_box(@bound_model.model.bounding_box)
@width = box.max_x-box.min_x @width = box.max_x-box.min_x
@@ -43,6 +46,8 @@ class IMICFPS
@bound_model = model @bound_model = model
@bound_model.model.game_object = self @bound_model.model.game_object = self
@bound_model.model.objects.each {|o| o.scale = self.scale} @bound_model.model.objects.each {|o| o.scale = self.scale}
@normalized_bounding_box = normalize_bounding_box_with_offset(@bound_model.model.bounding_box)
box = normalize_bounding_box(@bound_model.model.bounding_box) box = normalize_bounding_box(@bound_model.model.bounding_box)
@width = box.max_x-box.min_x @width = box.max_x-box.min_x
@height = box.max_y-box.min_y @height = box.max_y-box.min_y
@@ -68,16 +73,28 @@ class IMICFPS
def update def update
model.update model.update
@delta_time = Gosu.milliseconds @delta_time = Gosu.milliseconds
unless at_same_position?
@normalized_bounding_box = normalize_bounding_box_with_offset(@bound_model.model.bounding_box) if model
end
@last_x, @last_y, @last_z = @x, @y, @z
end end
def debug_color=(color) def debug_color=(color)
@debug_color = color @debug_color = color
end end
def at_same_position?
@x == @last_x &&
@y == @last_y &&
@z == @last_z
end
# Do two Axis Aligned Bounding Boxes intersect? # Do two Axis Aligned Bounding Boxes intersect?
def intersect(a, b) def intersect(a, b)
a = a.normalize_bounding_box_with_offset(a.model.bounding_box) a = a.normalized_bounding_box
b = b.normalize_bounding_box_with_offset(b.model.bounding_box) b = b.normalized_bounding_box
# puts "bounding boxes match!" if a == b # puts "bounding boxes match!" if a == b
if (a.min_x <= b.max_x && a.max_x >= b.min_x) && if (a.min_x <= b.max_x && a.max_x >= b.min_x) &&