Rampant/prototypes/utils/StreamUtils.lua

local streamUtils = {}

-- module code

function streamUtils.makeStream(attributes)
    local softSmokeName = "the-soft-smoke-rampant"
    local name = attributes.name .. "-stream-rampant"
    data:extend(
        {
            {
                type = "stream",
                name = name,
                flags = {"not-on-map"},
                stream_light = {intensity = 1, size = 4},
                ground_light = {intensity = 0.8, size = 4},
                
                smoke_sources =
                    {
                        {
                            name = softSmokeName,
                            frequency = 0.05, --0.25,
                            position = {0.0, 0}, -- -0.8},
                            starting_frame_deviation = 60
                        }
                    },
                particle_buffer_size = 90,
                particle_spawn_interval = 1,
                particle_spawn_timeout = attributes.particleTimeout or 6,
                particle_vertical_acceleration = attributes.particleVerticalAcceleration or 0.01,
                particle_horizontal_speed = attributes.particleHoizontalSpeed or 0.6,
                particle_horizontal_speed_deviation = attributes.particleHoizontalSpeedDeviation or 0.0025,
                particle_start_alpha = 0.5,
                particle_end_alpha = 1,
                particle_start_scale = 0.2,
                particle_loop_frame_count = 3,
                particle_fade_out_threshold = 0.9,
                particle_loop_exit_threshold = 0.25,
                action = attributes.actions,                
                
                spine_animation = 
                    { 
                        filename = "__base__/graphics/entity/flamethrower-fire-stream/flamethrower-fire-stream-spine.png",
                        blend_mode = "additive",
                        tint = attributes.tint2,
                        line_length = 4,
                        width = 32,
                        height = 18,
                        frame_count = 32,
                        axially_symmetrical = false,
                        direction_count = 1,
                        animation_speed = 2,
                        shift = {0, 0},
                    },
                
                shadow =
                    {
                        filename = "__Rampant__/graphics/acid-projectile-purple/acid-projectile-purple-shadow.png",
                        line_length = 5,
                        width = 28,
                        height = 16,
                        frame_count = 33,
                        priority = "high",
                        shift = {-0.09, 0.395}
                    },
                
                particle =
                    {
                        filename = "__base__/graphics/entity/flamethrower-fire-stream/flamethrower-explosion.png",
                        priority = "extra-high",
                        width = 64,
                        tint = attributes.tint2,
                        height = 64,
                        frame_count = 32,
                        line_length = 8
                    },
                oriented_particle = true,
                shadow_scale_enabled = true
            }            
        }        
    )
    return name
end

function streamUtils.makeAcidStream(info)
    local attributes = util.table.deepcopy(info)
    local name = attributes.name .. "-acid-stream-rampant"

    local acidStream = {
        type = "stream",
        name = name,
        flags = {"not-on-map"},
        --stream_light = {intensity = 1, size = 4},
        --ground_light = {intensity = 0.8, size = 4},

        particle_buffer_size = 90,
        particle_spawn_timeout = attributes.particleTimeout or 6,
        particle_vertical_acceleration = attributes.particleVerticalAcceleration or 0.01,
        particle_horizontal_speed = attributes.particleHoizontalSpeed or 0.6,
        particle_horizontal_speed_deviation = attributes.particleHoizontalSpeedDeviation or 0.0025,        
        particle_spawn_interval = 1,
        -- particle_spawn_timeout = attributes.particle_spawn_timeout,
        -- particle_vertical_acceleration = 0.005 * 0.60 *1.5, --x
        -- particle_horizontal_speed = 0.2* 0.75 * 1.5 * 1.5, --x
        -- particle_horizontal_speed_deviation = 0.005 * 0.70,
        particle_start_alpha = 0.5,
        particle_end_alpha = 1,
        particle_alpha_per_part = 0.8,
        particle_scale_per_part = 0.8,
        particle_loop_frame_count = 15,
        --particle_fade_out_threshold = 0.95,
        particle_fade_out_duration = 2,
        particle_loop_exit_threshold = 0.25,
        special_neutral_target_damage = {amount = 1, type = "acid"},
        initial_action = attributes.actions,
        particle = {
            filename = "__base__/graphics/entity/acid-projectile/acid-projectile-head.png",
            line_length = 5,
            width = 22,
            height = 84,
            frame_count = 15,
            shift = util.mul_shift(util.by_pixel(-2, 30), attributes.scale),
            tint = attributes.tint2,
            priority = "high",
            scale = attributes.scale,
            animation_speed = 1,
            hr_version =
                {
                    filename = "__base__/graphics/entity/acid-projectile/hr-acid-projectile-head.png",
                    line_length = 5,
                    width = 42,
                    height = 164,
                    frame_count = 15,
                    shift = util.mul_shift(util.by_pixel(-2, 31), attributes.scale),
                    tint = attributes.tint2,
                    priority = "high",
                    scale = 0.5 * attributes.scale,
                    animation_speed = 1,
                }
        },
        spine_animation = {
            filename = "__base__/graphics/entity/acid-projectile/acid-projectile-tail.png",
            line_length = 5,
            width = 66,
            height = 12,
            frame_count = 15,
            shift = util.mul_shift(util.by_pixel(0, -2), attributes.scale),
            tint = attributes.tint2,
            priority = "high",
            scale = attributes.scale,
            animation_speed = 1,
            hr_version =
                {
                    filename = "__base__/graphics/entity/acid-projectile/hr-acid-projectile-tail.png",
                    line_length = 5,
                    width = 132,
                    height = 20,
                    frame_count = 15,
                    shift = util.mul_shift(util.by_pixel(0, -1), attributes.scale),
                    tint = attributes.tint2,
                    priority = "high",
                    scale = 0.5 * attributes.scale,
                    animation_speed = 1,
                }
        },
        shadow = {
            filename = "__base__/graphics/entity/acid-projectile/acid-projectile-shadow.png",
            line_length = 15,
            width = 22,
            height = 84,
            frame_count = 15,
            priority = "high",
            shift = util.mul_shift(util.by_pixel(-2, 30), attributes.scale),
            draw_as_shadow = true,
            scale = attributes.scale,
            animation_speed = 1,
            hr_version =
                {
                    filename = "__base__/graphics/entity/acid-projectile/hr-acid-projectile-shadow.png",
                    line_length = 15,
                    width = 42,
                    height = 164,
                    frame_count = 15,
                    shift = util.mul_shift(util.by_pixel(-2, 31), attributes.scale),
                    draw_as_shadow = true,
                    priority = "high",
                    scale = 0.5 * attributes.scale,
                    animation_speed = 1,
                }
        },

        oriented_particle = true,
        shadow_scale_enabled = true,
    }

    data:extend({
            acidStream
    })
    return name
end

return streamUtils