function active_player(m)
    local np = gNetworkPlayers[m.playerIndex]
    if m.playerIndex == 0 then
        return true
    end
    if not np.connected then
        return false
    end
    return is_player_active(m)
end

function set_dist_and_angle(from, dist, pitch, yaw)
    return {
        x = from.x + dist * coss(pitch) * sins(yaw),
        y = from.y + dist * sins(pitch),
        z = from.z + dist * coss(pitch) * coss(yaw),
    }
end

function clamp(val, min, max)
    if val < min then return min end
    if val > max then return max end
    return val
end

function convert_s16(num)
    local min = -32768
    local max = 32767
    while (num < min) do
        num = max + (num - min)
    end
    while (num > max) do
        num = min + (num - max)
    end
    return num
end

function mario_health_float(m)
    return clamp((m.health - 255) / (2176 - 255), 0, 1)
end

function global_index_hurts_mario_state(globalIndex, m)
    if globalIndex == gNetworkPlayers[m.playerIndex].globalIndex then
        return false
    end

    local npAttacker = network_player_from_global_index(globalIndex)
    if npAttacker == nil then
        return false
    end
    local sAttacker = gPlayerSyncTable[npAttacker.localIndex]
    local sVictim = gPlayerSyncTable[m.playerIndex]

    if sAttacker.team == 0 or sVictim.team == 0 then
        return true
    end

    return sAttacker.team ~= sVictim.team
end

function is_invuln_or_intang(m)
    local invuln = ((m.action & ACT_FLAG_INVULNERABLE) ~= 0) or (m.invincTimer ~= 0)
    local intang = ((m.action & ACT_FLAG_INTANGIBLE) ~= 0)
    return invuln or intang
end

function strip_colors(name)
    local s = ''
    local inSlash = false
    for i = 1, #name do
        local c = name:sub(i,i)
        if c == '\\' then
            inSlash = not inSlash
        elseif not inSlash then
            s = s .. c
        end
    end
    return s
end

function get_other_team(teamNum)
    if teamNum == 1 then
        return 2
    elseif teamNum == 2 then
        return 1
    else
        return 0
    end
end

function team_color_str(teamNum)
    if teamNum == 1 then
        return '\\#ff9999\\'
    elseif teamNum == 2 then
        return '\\#9999ff\\'
    else
        return '\\#ffffff\\'
    end
end

function team_name_str(teamNum)
    if teamNum == 1 then
        return 'red'
    elseif teamNum == 2 then
        return 'blue'
    else
        return 'white'
    end
end

------------

function spawn_mist(obj, scale)
    local spi = obj_get_temp_spawn_particles_info(E_MODEL_MIST)
    if spi == nil then
        return nil
    end

    spi.behParam = 3
    spi.count = 5
    spi.offsetY = 25
    spi.forwardVelBase = 6 * scale
    spi.forwardVelRange = -12 * scale
    spi.velYBase = 6 * scale
    spi.velYRange = -12 * scale
    spi.gravity = 0
    spi.dragStrength = 5
    spi.sizeBase = 10 * scale
    spi.sizeRange = 16 * scale

    cur_obj_spawn_particles(spi)
end

function spawn_mist_advanced(obj, scale, type, count, offsetY)
    local spi = obj_get_temp_spawn_particles_info(E_MODEL_MIST)
    if spi == nil then
        return nil
    end

    spi.behParam = type
    spi.count = count
    spi.offsetY = offsetY
    spi.forwardVelBase = 3 * scale
    spi.forwardVelRange = -6 * scale
    spi.velYBase = 3 * scale
    spi.velYRange = -6 * scale
    spi.gravity = 0
    spi.dragStrength = 5
    spi.sizeBase = 5 * scale
    spi.sizeRange = 7 * scale

    cur_obj_spawn_particles(spi)
end

function spawn_balls(obj, scale)
    local spi = obj_get_temp_spawn_particles_info(E_MODEL_BOWLING_BALL)
    if spi == nil then
        return nil
    end

    spi.behParam = 2
    spi.count = 3
    spi.offsetY = 25
    spi.forwardVelBase = 30 * scale
    spi.forwardVelRange = -60 * scale
    spi.velYBase = 30 * scale
    spi.velYRange = -60 * scale
    spi.gravity = 0
    spi.dragStrength = 5
    spi.sizeBase = 0.5 * scale
    spi.sizeRange = 0.5 * scale

    cur_obj_spawn_particles(spi)
end

function spawn_triangles(obj)
    spawn_non_sync_object(id_bhvTriangleParticleSpawner, E_MODEL_NONE,
        obj.oPosX,
        obj.oPosY,
        obj.oPosZ,
        nil)
end

function spawn_horizontal_stars(x, y, z)
    spawn_non_sync_object(id_bhvHorStarParticleSpawner, E_MODEL_NONE,
        x,
        y,
        z,
        nil)
end

function spawn_vertical_stars(x, y, z)
    spawn_non_sync_object(id_bhvVertStarParticleSpawner, E_MODEL_NONE,
        x,
        y,
        z,
        nil)
end

function spawn_sparkles(x, y, z)
    for i = 0, 5 do
        spawn_non_sync_object(id_bhvSparkleSpawn, E_MODEL_NONE,
            x + math.random(-100, 100),
            y + math.random(-100, 100),
            z + math.random(-100, 100),
            nil)
    end
end

--------

function bhv_debug_pos_init(obj)
    obj.oFlags = OBJ_FLAG_UPDATE_GFX_POS_AND_ANGLE
    obj.oOpacity = 255
    obj.oTimer = 0
    obj_set_billboard(obj)
    obj_scale(obj, 0.5)
end

function bhv_debug_pos_loop(obj)
    obj.oTimer = obj.oTimer + 1
    if obj.oTimer > 1 then
        obj.activeFlags = ACTIVE_FLAG_DEACTIVATED
    end
end

id_bhvDebugPos = hook_behavior(nil, OBJ_LIST_DEFAULT, true, bhv_debug_pos_init, bhv_debug_pos_loop)

function debug_pos(x, y, z)
    spawn_non_sync_object(id_bhvDebugPos, E_MODEL_AMP, x, y, z, nil)
end

-------

function SEQUENCE_ARGS(priority, seqId)
    return ((priority << 8) | seqId)
end