Camera2D.

examples/2D_camera/main.lua

@@ -0,0 +1,67 @@
+local tileTexture = -1
+local camera = -1
+local cameraPos = { 0, 0 }
+local cameraRot = 0.0
+local cameraZoom = 1.0
+local cameraSpeed = 100.0
+local cameraRotSpeed = 100.0
+local cameraZoomSpeed = 10.0
+
+function init()
+	local monitor = 0
+	local mPos = RL_GetMonitorPosition( monitor )
+	local mSize = RL_GetMonitorSize( monitor )
+	local winSize = RL_GetWindowSize()
+	
+	RL_SetWindowState( FLAG_WINDOW_RESIZABLE )
+	RL_SetWindowPosition( { mPos[1] + mSize[1] / 2 - winSize[1] / 2, mPos[2] + mSize[2] / 2 - winSize[2] / 2 } )
+	RL_SetWindowTitle( "Camera 2D" )
+
+	tileTexture = RL_LoadTexture( RL_GetBasePath().."../resources/images/tiles.png" )
+	camera = RL_CreateCamera2D()
+	RL_SetCamera2DOffset( camera, { winSize[1] / 2, winSize[2] / 2 } )
+end
+
+function process( delta )
+	-- Move.
+	if RL_IsKeyDown( KEY_RIGHT ) then
+		cameraPos[1] = cameraPos[1] + cameraSpeed * delta
+	elseif RL_IsKeyDown( KEY_LEFT ) then
+		cameraPos[1] = cameraPos[1] - cameraSpeed * delta
+	end
+	if RL_IsKeyDown( KEY_DOWN ) then
+		cameraPos[2] = cameraPos[2] + cameraSpeed * delta
+	elseif RL_IsKeyDown( KEY_UP ) then
+		cameraPos[2] = cameraPos[2] - cameraSpeed * delta
+	end
+	-- Rotate.
+	if RL_IsKeyDown( string.byte( "E" ) ) then
+		cameraRot = cameraRot + cameraRotSpeed * delta
+	elseif RL_IsKeyDown( string.byte( "Q" ) ) then
+		cameraRot = cameraRot - cameraRotSpeed * delta
+	end
+	-- Zoom.
+	if RL_IsKeyDown( string.byte( "R" ) ) then
+		cameraZoom = cameraZoom + cameraZoomSpeed * delta
+	elseif RL_IsKeyDown( string.byte( "F" ) ) then
+		cameraZoom = cameraZoom - cameraZoomSpeed * delta
+	end
+end
+
+function draw()
+	RL_ClearBackground( RAYWHITE )
+	RL_SetCamera2DTarget( camera, cameraPos )
+	RL_SetCamera2DRotation( camera, cameraRot )
+	RL_SetCamera2DZoom( camera, cameraZoom )
+	
+	RL_BeginMode2D( camera )
+		-- Draw wall.
+		for y = 0, 4 do
+			for x = 0, 6 do
+				RL_DrawTextureRec( tileTexture, { 0, 0, 32, 32 }, { x * 32, y * 32 }, WHITE )
+			end
+		end
+		-- Draw hero.
+		RL_DrawTextureRec( tileTexture, { 3 * 32, 0, 32, 32 }, { cameraPos[1] - 16, cameraPos[2] - 16 }, WHITE )
+	RL_EndMode2D()
+end

examples/waving_cubes/main.lua

@@ -6,9 +6,7 @@
   Modified by Jussi Viitala (@nullstare) for ReiLua style.
 ]]
 
-local winSize = RL_GetWindowSize()
 local camera = -1
-
 local num_blocks = 15
 
 function init()