Documentation. waving_cubes example and RL_DrawFPS and RL_ColorFromHSV.

examples/waving_cubes/main.lua

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+--[[
+  Contributed by Codecat (@codecat)
+  Reviewed by Ramon Santamaria (@raysan5)
+
+  Modified by Teddy Astie (@TSnake41) for Lua binding.
+  Modified by Jussi Viitala (@nullstare) for ReiLua style.
+]]
+
+local winSize = RL_GetWindowSize()
+local camera = -1
+
+local num_blocks = 15
+
+function init()
+	local monitor = 0
+	local mPos = RL_GetMonitorPosition( monitor )
+	local mSize = RL_GetMonitorSize( monitor )
+	local winSize = RL_GetWindowSize()
+	
+	RL_SetWindowTitle( "Waving cubes" )
+	RL_SetWindowState( FLAG_WINDOW_RESIZABLE )
+	RL_SetWindowPosition( { mPos[1] + mSize[1] / 2 - winSize[1] / 2, mPos[2] + mSize[2] / 2 - winSize[2] / 2 } )
+
+	camera = RL_CreateCamera3D()
+	RL_SetCamera3DPosition( camera, { 30, 20, 30 } )
+	RL_SetCamera3DTarget( camera, { 0, 0, 0 } )
+	RL_SetCamera3DUp( camera, { 0, 1, 0 } )
+end
+
+function draw()
+  	local t = RL_GetTime()
+
+	local scale = (2.0 + math.sin(t)) * 0.7
+	local camera_time = t * 0.3
+	local camera_pos = RL_GetCamera3DPosition( camera )
+
+	camera_pos[1] = math.cos(camera_time) * 40.0
+	camera_pos[3] = math.sin(camera_time) * 40.0
+  
+	RL_SetCamera3DPosition( camera, camera_pos )
+	RL_ClearBackground( RAYWHITE )
+
+	RL_BeginMode3D( camera )
+		RL_DrawGrid( 10, 5.0 )
+
+		for x = 0,num_blocks - 1 do
+			for y = 0,num_blocks - 1 do
+				for z = 0,num_blocks - 1 do
+					local block_scale = (x + y + z) / 30
+					local scatter = math.sin(block_scale * 20.0 + t * 4.0)
+
+					local cube_pos = {
+						(x - num_blocks / 2) * (scale * 3.0) + scatter,
+						(y - num_blocks / 2) * (scale * 2.0) + scatter,
+						(z - num_blocks / 2) * (scale * 3.0) + scatter
+					}
+					local cube_color = RL_ColorFromHSV( (((x + y + z) * 18) % 360), 0.75, 0.9 )
+					local cube_size = (2.4 - scale) * block_scale
+
+					RL_DrawCube( cube_pos, { cube_size, cube_size, cube_size }, cube_color )
+				end
+			end
+		end
+  	RL_EndMode3D()
+
+  	RL_DrawFPS( { 10, 10 } )
+end