From: Clifton James Palmer <clifton.palmer@gmail.com>
Date: Sat, 8 Dec 2018 16:19:27 +0000 (-0600)
Subject: Added player names and stub for collision detection
X-Git-Url: http://git.purplebirdman.com/lightcycles-love.git/commitdiff_plain/8f054564538fd6e9b63f6d84796710232ba31908

Added player names and stub for collision detection
---

diff --git a/player.lua b/player.lua
index 387b54f..ed4f210 100644
--- a/player.lua
+++ b/player.lua
@@ -1,7 +1,7 @@
 require 'vec2'
 
 Player = {}
-Player.name = 'player'
+Player.name = 'none'
 Player.color = {255, 0, 0}
 Player.width = 5
 Player.height = 5
@@ -30,6 +30,10 @@ function Player:new(o)
     return o
 end
 
+function Player:__tostring()
+    return self.name
+end
+
 function Player:drawPath()
     if #self.path >= 4 then
         love.graphics.setLineWidth(2)
diff --git a/players/1.lua b/players/1.lua
index 5d8477a..1ab74fb 100644
--- a/players/1.lua
+++ b/players/1.lua
@@ -4,6 +4,7 @@ require 'vec2'
 require 'player'
 
 return Player:new({
+    name='Player 1',
     position=vec2:new(100,100),
     vector=Player.vectors.right,
     path={},
diff --git a/players/2.lua b/players/2.lua
index 2539bc9..2b34fdb 100644
--- a/players/2.lua
+++ b/players/2.lua
@@ -7,6 +7,7 @@ local width = love.graphics.getWidth()
 local height = love.graphics.getHeight()
 
 return Player:new({
+    name='Player 2',
     position=vec2:new(width-100,height-100),
     vector=Player.vectors.left,
     path={},
diff --git a/scene.lua b/scene.lua
index 3460899..73164e3 100644
--- a/scene.lua
+++ b/scene.lua
@@ -50,13 +50,37 @@ function scene:updatePlayers(dt)
     end
 end
 
+function doesLineIntersectPlayerPaths(path, x1, y1, x2, y2)
+    return false
+end
+
+function scene:handleCollisions()
+    -- calculate the last line for each player from current position
+    -- check if line intersects any other path line
+    -- if so, raise collision event for player
+    for _,player in pairs(self.players) do
+        local x1 = player.path[#player.path-1]
+        local y1 = player.path[#player.path]
+        local x2 = player.position.x
+        local y2 = player.position.y
+
+        -- check intersection against each existing path
+        for _,player2 in pairs(self.players) do
+            if doesLineIntersectPlayerPaths(player2.path, x1, y1, x2, y2) then
+                love.event.push('collision', player)
+            end
+        end
+    end
+end
+
 function scene:update(dt)
     self:updatePlayers(dt)
+    self:handleCollisions()
 end
 
 -- quit
 function scene:quit()
-    for i,player in pairs(self.players) do
-        print('Player '..i..' generated '.. #player.path / 2 .. ' path points')
+    for _,player in pairs(self.players) do
+        print(tostring(player)..' generated '.. #player.path / 2 .. ' path points')
     end
 end