diff options
Diffstat (limited to 'examples/pong')
| -rw-r--r-- | examples/pong/main.lua | 105 |
1 files changed, 55 insertions, 50 deletions
diff --git a/examples/pong/main.lua b/examples/pong/main.lua index 80c4346..4dd3462 100644 --- a/examples/pong/main.lua +++ b/examples/pong/main.lua @@ -1,5 +1,11 @@ +-- Pong example using Vector2 library. + +package.path = package.path..";"..RL.GetBasePath().."../resources/lib/?.lua" + +Vec2 = require "vector2" + -- Settings. -local winSize = { 800, 600 } +local winSize = Vec2:new( 800, 600 ) local monitor = 0 -- Constants. @@ -8,54 +14,54 @@ local BALL_SPEED = 330 -- Game objects. local playerLeft = { - pos = { 0, 0 }, - size = { 10, 70 }, + pos = Vec2:new( 0, 0 ), + size = Vec2:new( 10, 70 ), score = 0, } local playerRight = { - pos = { 0, 0 }, - size = { 10, 70 }, + pos = Vec2:new( 0, 0 ), + size = Vec2:new( 10, 70 ), score = 0, } local ball = { - pos = { 0, 0 }, + pos = Vec2:new( 0, 0 ), radius = 8.0, - vel = { 0, 0 }, + vel = Vec2:new( 0, 0 ), } local function reset() -- Initialize player positions. - playerLeft.pos[1] = playerLeft.size[1] - playerLeft.pos[2] = winSize[2] / 2 - playerLeft.size[2] / 2 - - playerRight.pos[1] = winSize[1] - playerRight.size[1] * 2 - playerRight.pos[2] = winSize[2] / 2 - playerRight.size[2] / 2 + playerLeft.pos.x = playerLeft.size.x + playerLeft.pos.y = winSize.y / 2 - playerLeft.size.y / 2 + + playerRight.pos.x = winSize.x - playerRight.size.x * 2 + playerRight.pos.y = winSize.y / 2 - playerRight.size.y / 2 -- Set ball to center. - ball.pos = { winSize[1] / 2, winSize[2] / 2 } + ball.pos:set( winSize.x / 2, winSize.y / 2 ) -- Short for if math random result 1, set BALL_SPEED otherwise set -BALL_SPEED. -- Could be replaced by normal if statement for easier readability. - ball.vel[1] = math.random( 0, 1 ) == 1 and BALL_SPEED or -BALL_SPEED + ball.vel.x = math.random( 0, 1 ) == 1 and BALL_SPEED or -BALL_SPEED -- Start slow. - ball.vel[2] = 0 + ball.vel.y = 0 end local function ballHit( padPos, padSize ) - ball.vel[1] = -ball.vel[1] + ball.vel.x = -ball.vel.x - local padCenter = padPos[2] + padSize[2] / 2 - local relHitPos = ball.pos[2] - padCenter - ball.vel[2] = BALL_SPEED * relHitPos / padSize[2] * 2 + local padCenter = padPos.y + padSize.y / 2 + local relHitPos = ball.pos.y - padCenter + ball.vel.y = BALL_SPEED * relHitPos / padSize.y * 2 end function RL.init() -- Set window to center of monitor. - local mPos = RL.GetMonitorPosition( monitor ) - local mSize = RL.GetMonitorSize( monitor ) + local mPos = Vec2:new( RL.GetMonitorPosition( monitor ) ) + local mSize = Vec2:new( RL.GetMonitorSize( monitor ) ) - RL.SetWindowState( RL.FLAG_VSYNC_HINT ) + RL.SetConfigFlags( RL.FLAG_VSYNC_HINT ) RL.SetWindowSize( winSize ) - RL.SetWindowPosition( { mPos[1] + mSize[1] / 2 - winSize[1] / 2, mPos[2] + mSize[2] / 2 - winSize[2] / 2 } ) + RL.SetWindowPosition( { mPos.x + mSize.x / 2 - winSize.x / 2, mPos.y + mSize.y / 2 - winSize.y / 2 } ) RL.SetWindowTitle( "Pong" ) -- Initialize ball pos. @@ -65,46 +71,45 @@ end function RL.process( delta ) -- Left player controls. - if RL.IsKeyDown( string.byte( "W" ) ) and 0 < playerLeft.pos[2] then - playerLeft.pos[2] = playerLeft.pos[2] - PLAYER_SPEED * delta - elseif RL.IsKeyDown( string.byte( "S" ) ) and playerLeft.pos[2] + playerLeft.size[2] < winSize[2] then - playerLeft.pos[2] = playerLeft.pos[2] + PLAYER_SPEED * delta + if RL.IsKeyDown( RL.KEY_W ) and 0 < playerLeft.pos.y then + playerLeft.pos.y = playerLeft.pos.y - PLAYER_SPEED * delta + elseif RL.IsKeyDown( RL.KEY_S ) and playerLeft.pos.y + playerLeft.size.y < winSize.y then + playerLeft.pos.y = playerLeft.pos.y + PLAYER_SPEED * delta end -- Right player controls. - if RL.IsKeyDown( RL.KEY_UP ) and 0 < playerRight.pos[2] then - playerRight.pos[2] = playerRight.pos[2] - PLAYER_SPEED * delta - elseif RL.IsKeyDown( RL.KEY_DOWN ) and playerRight.pos[2] + playerRight.size[2] < winSize[2] then - playerRight.pos[2] = playerRight.pos[2] + PLAYER_SPEED * delta + if RL.IsKeyDown( RL.KEY_UP ) and 0 < playerRight.pos.y then + playerRight.pos.y = playerRight.pos.y - PLAYER_SPEED * delta + elseif RL.IsKeyDown( RL.KEY_DOWN ) and playerRight.pos.y + playerRight.size.y < winSize.y then + playerRight.pos.y = playerRight.pos.y + PLAYER_SPEED * delta end -- Move ball. - ball.pos = { ball.pos[1] + ball.vel[1] * delta, - ball.pos[2] + ball.vel[2] * delta } + ball.pos = ball.pos + ball.vel:scale( delta ) -- Bounce from window edge. - if ( ball.pos[2] < ball.radius and ball.vel[2] < 0 ) - or ( winSize[2] < ball.pos[2] + ball.radius and 0 < ball.vel[2] ) then - ball.vel[2] = -ball.vel[2] + if ( ball.pos.y < ball.radius and ball.vel.y < 0 ) + or ( winSize.y < ball.pos.y + ball.radius and 0 < ball.vel.y ) then + ball.vel.y = -ball.vel.y end -- Bounce from players. - local playerLeftRect = { playerLeft.pos[1], playerLeft.pos[2], - playerLeft.size[1], playerLeft.size[2] } - local playerRightRect = { playerRight.pos[1], playerRight.pos[2], - playerRight.size[1], playerRight.size[2] } + local playerLeftRect = { playerLeft.pos.x, playerLeft.pos.y, + playerLeft.size.x, playerLeft.size.y } + local playerRightRect = { playerRight.pos.x, playerRight.pos.y, + playerRight.size.x, playerRight.size.y } - if RL.CheckCollisionCircleRec( ball.pos, ball.radius, playerLeftRect ) and ball.vel[1] < 0 then + if RL.CheckCollisionCircleRec( ball.pos, ball.radius, playerLeftRect ) and ball.vel.x < 0 then ballHit( playerLeft.pos, playerLeft.size ) - elseif RL.CheckCollisionCircleRec( ball.pos, ball.radius, playerRightRect ) and 0 < ball.vel[1] then + elseif RL.CheckCollisionCircleRec( ball.pos, ball.radius, playerRightRect ) and 0 < ball.vel.x then ballHit( playerRight.pos, playerRight.size ) end -- Score. - if ball.pos[1] < 0 then + if ball.pos.x < 0 then playerRight.score = playerRight.score + 1 reset() - elseif winSize[1] < ball.pos[1] then + elseif winSize.x < ball.pos.x then playerLeft.score = playerLeft.score + 1 reset() end @@ -114,14 +119,14 @@ function RL.draw() RL.ClearBackground( RL.BLACK ) -- Draw players. - RL.DrawRectangle( { playerLeft.pos[1], playerLeft.pos[2], playerLeft.size[1], playerLeft.size[2] }, RL.WHITE ) - RL.DrawRectangle( { playerRight.pos[1], playerRight.pos[2], playerRight.size[1], playerRight.size[2] }, RL.WHITE ) + RL.DrawRectangle( { playerLeft.pos.x, playerLeft.pos.y, playerLeft.size.x, playerLeft.size.y }, RL.WHITE ) + RL.DrawRectangle( { playerRight.pos.x, playerRight.pos.y, playerRight.size.x, playerRight.size.y }, RL.WHITE ) -- Draw ball. Ball position will be the center in drawCircle. RL.DrawCircle( ball.pos, ball.radius, RL.WHITE ) - -- Draw scire - RL.DrawText( RL.defaultFont, playerLeft.score, { 50, 10 }, 40, 2, RL.WHITE ) - local rightTextSize = RL.MeasureText( RL.defaultFont, playerRight.score, 40, 2 ) - RL.DrawText( RL.defaultFont, playerRight.score, { winSize[1] - 50 - rightTextSize[1], 10 }, 40, 2, RL.WHITE ) + -- Draw score. + RL.DrawText( RL.GetFontDefault(), tostring( playerLeft.score ), { 50, 10 }, 40, 2, RL.WHITE ) + local rightTextSize = Vec2:new( RL.MeasureText( RL.GetFontDefault(), tostring( playerRight.score ), 40, 2 ) ) + RL.DrawText( RL.GetFontDefault(), tostring( playerRight.score ), { winSize.x - 50 - rightTextSize.x, 10 }, 40, 2, RL.WHITE ) end |