Documentation, heightmap example and custom begin and end draw.

examples/heightmap/main.lua

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+local TILE_SIZE = 32
+
+local monitor = 0
+local camera = -1
+local groundTexture = -1
+local tilesetTex = -1
+local heigthImage = -1
+local mesh = -1
+local material = -1
+
+local grassRec = { 6 * TILE_SIZE, 0 * TILE_SIZE, TILE_SIZE, TILE_SIZE }
+local dirtRec = { 4 * TILE_SIZE, 0 * TILE_SIZE, TILE_SIZE, TILE_SIZE }
+local dirtRightRec = { 5 * TILE_SIZE, 0 * TILE_SIZE, TILE_SIZE, TILE_SIZE }
+local dirtLeftRec = { 5 * TILE_SIZE, 2 * TILE_SIZE, TILE_SIZE, TILE_SIZE }
+local dirtTopRec = { 6 * TILE_SIZE, 1 * TILE_SIZE, TILE_SIZE, TILE_SIZE }
+local dirtBottomRec = { 7 * TILE_SIZE, 0 * TILE_SIZE, TILE_SIZE, TILE_SIZE }
+
+local matrix = {}
+
+function init()
+	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 } )
+
+	camera = RL_CreateCamera3D()
+	RL_SetCamera3DPosition( camera, { 0, 2, 4 } )
+	RL_SetCamera3DTarget( camera, { 0, 0, 0 } )
+	RL_SetCamera3DUp( camera, { 0, 2, 0 } )
+	RL_SetCamera3DMode( camera, CAMERA_FREE )
+
+	heigthImage = RL_LoadImage( RL_GetBasePath().."../resources/images/heightmap.png" )
+
+	mesh = RL_GenMeshHeightmap( heigthImage, { 16, 4, 16 } )
+	tilesetTex = RL_LoadTexture( RL_GetBasePath().."../resources/images/tiles.png" )
+	groundTexture = RL_LoadRenderTexture( { TILE_SIZE * 16, TILE_SIZE * 16 } )
+
+	-- Draw to ground texture.
+	RL_BeginTextureMode( groundTexture )
+
+	for x = 1, 16 do
+		for y = 1, 16 do
+			local pos = { x - 1, y - 1 }
+
+			if 4 < x and x < 14 and 4 < y and y < 8 then
+				RL_DrawTextureRec( tilesetTex, dirtRec, { pos[1] * TILE_SIZE, pos[2] * TILE_SIZE }, WHITE )
+			elseif 4 == x and 4 < y and y < 8 then
+				RL_DrawTextureRec( tilesetTex, dirtRightRec, { pos[1] * TILE_SIZE, pos[2] * TILE_SIZE }, WHITE )
+			elseif 14 == x and 4 < y and y < 8 then
+				RL_DrawTextureRec( tilesetTex, dirtLeftRec, { pos[1] * TILE_SIZE, pos[2] * TILE_SIZE }, WHITE )
+			elseif 4 < x and x < 14 and 4 == y then
+				RL_DrawTextureRec( tilesetTex, dirtTopRec, { pos[1] * TILE_SIZE, pos[2] * TILE_SIZE }, WHITE )
+			elseif 4 < x and x < 14 and 8 == y then
+				RL_DrawTextureRec( tilesetTex, dirtBottomRec, { pos[1] * TILE_SIZE, pos[2] * TILE_SIZE }, WHITE )
+			else
+				RL_DrawTextureRec( tilesetTex, grassRec, { pos[1] * TILE_SIZE, pos[2] * TILE_SIZE }, WHITE )
+			end 
+		end
+	end
+
+	RL_EndTextureMode()
+
+	material = RL_LoadMaterialDefault()
+	RL_SetTextureSource( TEXTURE_SOURCE_RENDER_TEXTURE )
+	RL_SetMaterialTexture( material, MATERIAL_MAP_ALBEDO, groundTexture )
+	RL_SetTextureSource( TEXTURE_SOURCE_TEXTURE )
+
+	matrix = RL_MatrixMultiply( RL_MatrixIdentity(), RL_MatrixTranslate( { -4, 0, -4 } ) )
+end
+
+function draw()
+	RL_ClearBackground( { 100, 150, 100 } )
+	RL_UpdateCamera3D( camera )
+	
+	RL_BeginMode3D( camera )
+		RL_DrawMesh( mesh, material, matrix )
+	RL_EndMode3D()
+end