Tommy: Added tons of comments; added total speed check

love/tommy/main.lua

@@ -1,5 +1,12 @@
 require "Tserial"
 
+--Create a function to deal with acceleration
+--accel is just a TRUE/False flag that tells us if we want to accel or decel
+--axis is directional speed, shoudl probably change its name
+--direction is direction, up/down/left/right
+--
+--left and down return negative values
+--up and right return positive numbers... so standard grid
 function move(accel, axis, direction)
 
 		-- with acceleration
@@ -25,39 +32,60 @@ function move(accel, axis, direction)
 		return axis
 end
 
-
-
 function love.load()
-	
+	--This should probably go in the config file once I learn how those work
+	--Name of the program Determines things like what folder it saves in
 	love.filesystem.setIdentity("tommy")
 	saveFile = "test.lua"
 	
 	-- Check if Save file exists
 	save_exists = love.filesystem.exists(saveFile)
-	
+	-- Create a table to hold all the player data
 	player = {}
+	-- Player x/y position
+	player.x = 100
+	player.y = 100
+	-- player height/width
+	player.w = 25
+	player.h = 25
+	
+	--Player top speed
+	player.speed = 500
 
-		player.x = 100
+	--create a table to hold all the speed data
-		player.y = 100
+	--Yay multi-dimensional arrays!
-		player.w = 25
+	player.current_speed = {}
-		player.h = 25
+
-		player.speed = 500
+	--Left right speed values of the player
-		player.current_speed = {}
+	player.current_speed.left = 0
-		player.current_speed.left = 0
+	player.current_speed.right = 0
-		player.current_speed.right = 0
+
-		player.current_speed.up = 0
+	--Actual x speed
-		player.current_speed.down = 0
+	player.current_speed.x = 0
-		player.current_speed.x = 0
+
-		player.current_speed.y = 0
+	-- Up down speed values of the player
-		player.kill_engines = false
+	player.current_speed.up = 0
-		--Must be less than 1
+	player.current_speed.down = 0
-		--if I understand correctly, the second number should be how many frames
+	
-		--it takes to get to top speed
+	--Actual y speed
-		player.accel = 1/120
+	player.current_speed.y = 0
+
+	-- Kill engines flag to disable deceleration
+	player.kill_engines = false
+	
+	--Must be less than 1
+	--if I understand correctly, the second number should be how many frames
+	--it takes to get to top speed
+	player.accel = 1/120
 end
 
+-- I choose to use this function for keys I don't want to repeat
+-- For example, using the keyboard.isDown() function for saving
+-- means that if I hold the key down, it's constantly writing data
+-- No good for the hdd
 function love.keyreleased(key)
-   if key == "q" then
+  --quit  
+	if key == "q" then
       love.event.quit()
    end
 
@@ -72,7 +100,8 @@ function love.keyreleased(key)
 			player = Tserial.unpack( love.filesystem.read( saveFile ) )
 		end
 	end
-
+	
+	-- Engine kill
 	if key == "z" then
 		if player.kill_engines == false then
 			player.kill_engines = true
@@ -87,35 +116,44 @@ function love.update(dt)
 	
 	--Move character left or right
 	if love.keyboard.isDown("right") then
+	
+		--All directional key presses restart the engines
 		player.kill_engines = false
+		
+		--We use my move function to deal with acceleration
+		--we also track left, right, up, down speed seperately
 		player.current_speed.right = move(true, player.current_speed.right, "right")
-		print ("RIGHT ".. player.current_speed.right)
+		print ("RIGHT: " .. math.floor(player.current_speed.right) .. " Total: " .. 
+												math.floor(player.current_speed.x))
 
 	elseif love.keyboard.isDown("left") then
 		player.kill_engines = false
 		player.current_speed.left = move(true, player.current_speed.left, "left")
-		print ("LEFT ".. player.current_speed.left)
+		print ("LEFT ".. math.floor(player.current_speed.left) .. " TOTAL :" .. 
---		player.x = player.x - player.current_speed.left*dt
+										 math.floor(player.current_speed.x))
 	end
 
-	player.x = player.x + (player.current_speed.right + player.current_speed.left)*dt
-
-
 	--Also able to move or up down at the same time as one of the above
+	--i.e. I only used elseif to prevent left/right from working at the same time
+	--as well as up/down
+	--I may change this now that acceleration and deceleration are working properly
 	
 	if love.keyboard.isDown("up") then
 		player.kill_engines = false
 		player.current_speed.up = move(true, player.current_speed.up, "up")
+		
+		print ("UP ".. math.floor(player.current_speed.up) .. " Total:" .. 
+									 math.floor(player.current_speed.y))
 	elseif love.keyboard.isDown ("down") then
 		player.killengines = false
 		player.current_speed.down = move(true, player.current_speed.down, "down")
+		
+		print ("DOWN ".. math.floor(player.current_speed.down) .. " Total: "..
+									   math.floor(player.current_speed.y))
 	end
 	
-	player.y = player.y + (player.current_speed.up + player.current_speed.down)*dt
-	
-	
 	-- Decel
-	
+	-- We check our kill engine flags to see if we even bother with this
 	if not player.kill_engines then
 		if not love.keyboard.isDown("up") then
 			player.current_speed.up = move(false, player.current_speed.up, "up")
@@ -132,8 +170,17 @@ function love.update(dt)
 		end
 	end
 
-	
 
+	-- Really just created these so I can see total speed stats
+	player.current_speed.x = (player.current_speed.right + player.current_speed.left)
+	player.current_speed.y = (player.current_speed.up + player.current_speed.down)
+	--Remember how we have our left/down speed as a negative number?
+	--It makes it simple to simply add the two x's and the two y's together
+	--to get a total speed for each and then reassign the player.x and player.y
+	--corrs to their new position for love.draw to redraw them
+	
+	player.x = player.x + (player.current_speed.x)*dt
+	player.y = player.y + (player.current_speed.y)*dt
 
 end