raylib-lua-legacy/examples/shapes_logo_raylib_anim.lua
2020-05-08 01:54:08 +02:00

119 lines
3.5 KiB
Lua

local screenWidth = 800
local screenHeight = 450
rl.SetConfigFlags(rl.FLAG_VSYNC_HINT)
rl.InitWindow(screenWidth, screenHeight, "raylib [shapes] example - raylib logo animation")
local logoPositionX = screenWidth/2 - 128
local logoPositionY = screenHeight/2 - 128
local framesCounter = 0
local lettersCount = 0
local topSideRecWidth = 16
local leftSideRecHeight = 16
local bottomSideRecWidth = 16
local rightSideRecHeight = 16
local state = 0
local alpha = 1.0
local lua_color = rl.new("Color", 3, 3, 128, 255)
local function Fade(color, alpha)
return rl.new("Color",
color.r * alpha,
color.g * alpha,
color.b * alpha,
color.a * alpha
)
end
while not rl.WindowShouldClose() do
if (state == 0) then
framesCounter = framesCounter + 1
if (framesCounter == 120) then
state = 1
framesCounter = 0
end
elseif (state == 1) then
topSideRecWidth = topSideRecWidth + 4
leftSideRecHeight = leftSideRecHeight + 4
if (topSideRecWidth == 256) then state = 2 end
elseif (state == 2) then
bottomSideRecWidth = bottomSideRecWidth + 4
rightSideRecHeight = rightSideRecHeight + 4
if (bottomSideRecWidth == 256) then state = 3 end
elseif (state == 3) then
framesCounter = framesCounter + 1
if (math.floor(framesCounter / 12) == 1) then
lettersCount = lettersCount + 1
framesCounter = 0
end
if (lettersCount >= 10) then
alpha = alpha - 0.02
if (alpha <= 0.0) then
alpha = 0.0
state = 4
end
end
elseif (state == 4) then
if (rl.IsKeyPressed(rl.KEY_R)) then
framesCounter = 0
lettersCount = 0
topSideRecWidth = 16
leftSideRecHeight = 16
bottomSideRecWidth = 16
rightSideRecHeight = 16
alpha = 1.0
state = 0
end
end
rl.BeginDrawing()
rl.ClearBackground(rl.WHITE)
if (state == 0) then
if (math.floor(framesCounter/15)%2 == 1) then
rl.DrawRectangle(logoPositionX, logoPositionY, 16, 16, lua_color)
end
elseif (state == 1) then
rl.DrawRectangle(logoPositionX, logoPositionY, topSideRecWidth, 16, lua_color)
rl.DrawRectangle(logoPositionX, logoPositionY, 16, leftSideRecHeight, lua_color)
elseif (state == 2) then
rl.DrawRectangle(logoPositionX, logoPositionY, topSideRecWidth, 16, lua_color)
rl.DrawRectangle(logoPositionX, logoPositionY, 16, leftSideRecHeight, lua_color)
rl.DrawRectangle(logoPositionX + 240, logoPositionY, 16, rightSideRecHeight, lua_color)
rl.DrawRectangle(logoPositionX, logoPositionY + 240, bottomSideRecWidth, 16, lua_color)
elseif (state == 3) then
rl.DrawRectangle(logoPositionX, logoPositionY, topSideRecWidth, 16, Fade(lua_color, alpha))
rl.DrawRectangle(logoPositionX, logoPositionY + 16, 16, leftSideRecHeight - 32, Fade(lua_color, alpha))
rl.DrawRectangle(logoPositionX + 240, logoPositionY + 16, 16, rightSideRecHeight - 32, Fade(lua_color, alpha))
rl.DrawRectangle(logoPositionX, logoPositionY + 240, bottomSideRecWidth, 16, Fade(lua_color, alpha))
rl.DrawRectangle(screenWidth/2 - 112, screenHeight/2 - 112, 224, 224, Fade(rl.RAYWHITE, alpha))
rl.DrawText(string.sub("raylib", 0, lettersCount), screenWidth/2 - 44, screenHeight/2 + 24, 50, Fade(lua_color, alpha))
rl.DrawText(string.sub("Lua", 0, math.max(0, lettersCount - 3)), screenWidth/2 - 44, screenHeight/2 + 65, 50, Fade(lua_color, alpha))
elseif (state == 4) then
rl.DrawText("[R] REPLAY", 340, 200, 20, rl.GRAY)
end
rl.EndDrawing()
end
rl.CloseWindow()