working hud

hud.lua

@@ -0,0 +1,171 @@
+
+local HUD_POSITION = {x = 0.1, y = 0.2}
+local O2_BAR_OFFSET = {x = 0, y = 0}
+local SUITE_INCOMPLETE_OFFSET = {x = 0, y = 20}
+local HUD_ALIGNMENT = {x = 1, y = 0}
+
+local hud = {} -- playername -> data
+
+
+local setup_hud = function(player)
+	local playername = player:get_player_name()
+	local hud_data = {}
+	hud[playername] = hud_data
+
+	hud_data.overlay = player:hud_add({
+	    hud_elem_type = "image",
+	    position = {x = 0.5, y = 0.5},
+	    scale = {
+	      x = -100,
+	      y = -100
+	    },
+	    text = "spacesuit_overlay.png"
+	})
+
+	hud_data.o2_bg = player:hud_add({
+		hud_elem_type = "image",
+		position = HUD_POSITION,
+		offset = O2_BAR_OFFSET,
+		text = "spacesuit_o2_levels_bg.png",
+		alignment = HUD_ALIGNMENT,
+		scale = {x = -80, y = 1}
+	})
+
+	hud_data.o2_fg = player:hud_add({
+		hud_elem_type = "image",
+		position = HUD_POSITION,
+		offset = O2_BAR_OFFSET,
+		text = "spacesuit_o2_levels_fg_green.png",
+		alignment = HUD_ALIGNMENT,
+		scale = {x = 0, y = 1}
+	})
+
+	hud_data.o2_label = player:hud_add({
+		hud_elem_type = "text",
+		position = HUD_POSITION,
+		offset = {x = O2_BAR_OFFSET.x - 80,   y = O2_BAR_OFFSET.y},
+		text = "O2-Level:",
+		alignment = HUD_ALIGNMENT,
+		scale = {x = 100, y = 100},
+		number = 0x00FF00
+	})
+
+	hud_data.o2_level = player:hud_add({
+		hud_elem_type = "text",
+		position = {x = 1, y = HUD_POSITION.y },
+		offset = {x = O2_BAR_OFFSET.x - 70,   y = O2_BAR_OFFSET.y},
+		text = "",
+		alignment = HUD_ALIGNMENT,
+		scale = {x = 100, y = 100},
+		number = 0x00FF00
+	})
+
+	hud_data.suit_incomplete = player:hud_add({
+		hud_elem_type = "text",
+		position = HUD_POSITION,
+		offset = SUITE_INCOMPLETE_OFFSET,
+		text = "",
+		alignment = HUD_ALIGNMENT,
+		scale = {x = 100, y = 100},
+		number = 0xFF0000
+	})
+
+end
+
+local remove_hud = function(player)
+	local playername = player:get_player_name()
+	local hud_data = hud[playername]
+
+	player:hud_remove(hud_data.overlay)
+	player:hud_remove(hud_data.o2_bg)
+	player:hud_remove(hud_data.o2_fg)
+	player:hud_remove(hud_data.o2_label)
+	player:hud_remove(hud_data.o2_level)
+	player:hud_remove(hud_data.suit_incomplete)
+
+	hud[playername] = nil
+end
+
+local get_color = function(r,g,b)
+	return b + (g * 256) + (r * 256 * 256)
+end
+
+local update_hud = function(player, has_full_suit, armor_list)
+	local playername = player:get_player_name()
+	local hud_data = hud[playername]
+
+	if has_full_suit then
+		player:hud_change(hud_data.suit_incomplete, "text", "")
+	else
+		player:hud_change(hud_data.suit_incomplete, "text", "Spacesuit incomplete!")
+	end
+
+	local max_wear = 0
+	for _,item in pairs(armor_list) do
+		-- wear:0 == full, wear:65535 == empty
+		if item:get_name() == "spacesuit:helmet" then
+			max_wear = math.max(max_wear, item:get_wear())
+		elseif item:get_name() == "spacesuit:chestplate" then
+			max_wear = math.max(max_wear, item:get_wear())
+		elseif item:get_name() == "spacesuit:pants" then
+			max_wear = math.max(max_wear, item:get_wear())
+		elseif item:get_name() == "spacesuit:boots" then
+			max_wear = math.max(max_wear, item:get_wear())
+		end
+	end
+
+	local factor_full = 1 - (max_wear / 65535)
+
+	player:hud_change(hud_data.o2_level, "text", math.floor(factor_full * 100) .. "%")
+	player:hud_change(hud_data.o2_fg, "scale", { x=math.floor(factor_full * -80), y=1 })
+
+	local color
+
+	if factor_full > 0.3 then
+		-- green
+		color = get_color(0,255,0)
+		player:hud_change(hud_data.o2_fg, "text", "spacesuit_o2_levels_fg_green.png")
+
+	elseif factor_full > 0.1 then
+		-- yellow
+		color = get_color(255,255,0)
+		player:hud_change(hud_data.o2_fg, "text", "spacesuit_o2_levels_fg_yellow.png")
+
+	else
+		-- red
+		color = get_color(255,0,0)
+		player:hud_change(hud_data.o2_fg, "text", "spacesuit_o2_levels_fg_red.png")
+
+	end
+
+	player:hud_change(hud_data.o2_label, "number", color)
+	player:hud_change(hud_data.o2_level, "number", color)
+
+end
+
+spacesuit.set_player_wearing = function(player, has_full_suit, has_helmet, armor_list)
+	local playername = player:get_player_name()
+	local hud_data = hud[playername]
+
+	if hud_data and has_helmet then
+		-- player wears it
+		update_hud(player, has_full_suit, armor_list)
+
+	elseif not hud_data and not has_helmet then
+		-- player does not wear it
+
+	elseif hud_data and not has_helmet then
+		-- player stopped wearing
+		remove_hud(player)
+
+	elseif not hud_data and has_helmet then
+		-- player started wearing
+		setup_hud(player)
+		minetest.after(0.1, function()
+			update_hud(player, has_full_suit, armor_list)
+		end)
+
+	end
+end
+
+