7793e76890
- Throw error if an unsupported attribute is encountered. - Throw errors for invalid function arguments. - Optimize out attributes with a value of 1.
68 lines
1.4 KiB
Lua
68 lines
1.4 KiB
Lua
physics = {}
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local players = {}
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local default_overrides = {
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speed = 1,
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jump = 1,
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gravity = 1
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}
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minetest.register_on_joinplayer(function(player)
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players[player:get_player_name()] = {}
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end)
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minetest.register_on_leaveplayer(function(player)
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players[player:get_player_name()] = nil
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end)
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local function update(name)
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assert(players[name])
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local player = minetest.get_player_by_name(name)
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local override = table.copy(default_overrides)
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for _, layer in pairs(players[name]) do
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for attr, val in pairs(layer) do
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override[attr] = override[attr] * val
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end
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end
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player:set_physics_override(override)
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end
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function physics.set(name, layer, modifiers)
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-- Basic sanity checks
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assert(
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type(name) == "string" and type(layer) == "string" and type(modifiers) == "table",
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"physics.set: Invalid function arguments!"
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)
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if not players[name] then
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return
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end
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for attr, val in pairs(modifiers) do
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-- Throw error if an unsupported attribute is encountered
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assert(default_overrides[attr], "physics: Unsupported attribute!")
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-- Remove an attribute if its value is 1
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if val == 1 then
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modifiers[attr] = nil
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end
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end
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players[name][layer] = modifiers
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update(name)
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end
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function physics.remove(name, layer)
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-- Basic sanity checks
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assert(type(name) == "string" and type(layer) == "string",
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"physics.remove: Invalid function arguments!")
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if not players[name] then
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return
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end
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players[name][layer] = nil
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update(name)
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end
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