end_of_eden/assets/scripts/cards.lua

function highlight(val)
    return text_underline(text_bold("[" .. tostring(val) .. "]"))
end

register_card("KILL", {
    name = "Kill",
    description = "Debug Card",
    state = function(ctx)
        return nil
    end,
    max_level = 0,
    color = "#2f3e46",
    need_target = true,
    point_cost = 0,
    price = -1,
    callbacks = {
        on_cast = function(ctx)
            deal_damage(ctx.caster, ctx.target, 1000, true)
            return nil
        end
    }
});

register_card("MELEE_HIT", {
    name = "Melee Hit",
    description = "Use your bare hands to deal 5 (+3 for each upgrade) damage.",
    state = function(ctx)
        return "Use your bare hands to deal " .. highlight(5 + ctx.level * 3) .. " damage."
    end,
    max_level = 1,
    color = "#2f3e46",
    need_target = true,
    point_cost = 1,
    price = 30,
    callbacks = {
        on_cast = function(ctx)
            deal_damage(ctx.caster, ctx.target, 5 + ctx.level * 3)
            return nil
        end
    }
});

register_card("RUPTURE", {
    name = "Rupture",
    description = "Inflict your enemy with " .. highlight("Vulnerable") .. ".",
    state = function(ctx)
        return "Inflict your enemy with " .. highlight(tostring(1 + ctx.level) .. " Vulnerable") .. "."
    end,
    max_level = 3,
    color = "#cf532d",
    need_target = true,
    point_cost = 1,
    price = 30,
    callbacks = {
        on_cast = function(ctx)
            give_status_effect("VULNERABLE", ctx.target, 1 + ctx.level)
            return nil
        end
    }
});

register_card("BLOCK", {
    name = "Block",
    description = "Shield yourself and gain 5 " .. highlight("block") .. ".",
    state = function(ctx)
        return "Shield yourself and gain " .. highlight(5 + ctx.level * 3) .. " block."
    end,
    max_level = 1,
    color = "#219ebc",
    need_target = false,
    point_cost = 1,
    price = 40,
    callbacks = {
        on_cast = function(ctx)
            give_status_effect("BLOCK", ctx.caster, 5 + ctx.level * 3)
            return nil
        end
    }
});

register_card("BLOCK_SPIKES", {
    name = "Block Spikes",
    description = "Transforms " .. highlight("block") .. " to damage.",
    state = function(ctx)
        -- Fetch all BLOCK instances of owner
        local blocks = fun.iter(pairs(get_actor_status_effects(ctx.owner))):map(get_status_effect_instance):filter(function(val)
            return val.type_id == "BLOCK"
        end):totable()

        -- Sum stacks to get damage
        local damage = fun.iter(pairs(blocks)):reduce(function(acc, val)
            return acc + val.stacks
        end, 0)

        return "Transforms block to " .. highlight(damage) .. " damage."
    end,
    max_level = 0,
    color = "#895cd6",
    need_target = true,
    point_cost = 1,
    price = 100,
    callbacks = {
        on_cast = function(ctx)
            -- Fetch all BLOCK instances of caster
            local blocks = fun.iter(pairs(get_actor_status_effects(ctx.caster))):map(get_status_effect_instance):filter(function(val)
                return val.type_id == "BLOCK"
            end):totable()

            -- Sum stacks to get damage
            local damage = fun.iter(pairs(blocks)):reduce(function(acc, val)
                return acc + val.stacks
            end, 0)

            if damage == 0 then
                return "No block status effect present!"
            end

            -- Remove BLOCKs
            fun.iter(pairs(blocks)):for_each(function(val)
                remove_status_effect(val.guid)
            end)

            -- Deal Damage
            deal_damage(ctx.caster, ctx.target, damage)

            return nil
        end
    }
});

register_card("SHIELD_BASH", {
    name = "Shield Bash",
    description = "Deal 4 (+2 for each upgrade) damage to the enemy and gain " .. highlight("block") ..
        " status effect equal to the damage dealt.",
    state = function(ctx)
        return "Deal " .. highlight(4 + ctx.level * 2) .. " damage to the enemy and gain " .. highlight("block") ..
                   " status effect equal to the damage dealt."
    end,
    max_level = 1,
    color = "#ff5722",
    need_target = true,
    point_cost = 1,
    price = 40,
    callbacks = {
        on_cast = function(ctx)
            local damage = deal_damage(ctx.caster, 4 + ctx.level * 2)
            give_status_effect("BLOCK", ctx.caster, damage)
            return nil
        end
    }
});

register_card("FEAR", {
    name = "Fear",
    description = "Inflict " .. highlight("fear") .. " on the target, causing them to miss their next turn.",
    state = function(ctx)
        return nil
    end,
    max_level = 0,
    color = "#725e9c",
    need_target = true,
    point_cost = 2,
    price = 80,
    callbacks = {
        on_cast = function(ctx)
            give_status_effect("FEAR", ctx.target)
            return nil
        end
    }
});

register_card("RADIANT_SEED", {
    name = "Radiant Seed",
    description = "Inflict 10 (+2 for each upgrade) damage to all enemies, but also causes 5 (-2 for each upgrade) damage to the caster.",
    state = function(ctx)
        return "Inflict " .. highlight(10 + ctx.level * 2) .. " damage to all enemies, but also causes " .. highlight(5 - ctx.level * 2) ..
                   " damage to the caster."
    end,
    max_level = 1,
    color = "#82c93e",
    need_target = false,
    point_cost = 2,
    price = 120,
    callbacks = {
        on_cast = function(ctx)
            -- Deal damage to caster without any modifiers applying
            deal_damage(ctx.caster, ctx.caster, 5 - ctx.level * 2, true)
            -- Deal damage to opponents
            deal_damage_multi(ctx.caster, get_opponent_guids(ctx.caster), 10 + ctx.level * 2)
            return nil
        end
    }
});

register_card("BERSERKER_RAGE", {
    name = "Berserker Rage",
    description = "Gain " .. highlight("3 energy") .. ", but take 30% (-10% per level) of your HP as damage.",
    state = function(ctx)
        return "Gain " .. highlight("3 energy") .. ", but take " .. highlight(tostring(30 - ctx.level * 10) .. "%") .. " (" ..
                   tostring(get_player().hp * (0.3 - ctx.level * 0.1)) .. ") of your HP as damage."
    end,
    max_level = 0,
    color = "#d8a448",
    need_target = false,
    point_cost = 0,
    price = 100,
    callbacks = {
        on_cast = function(ctx)
            player_give_action_points(3)
            deal_damage(ctx.caster, ctx.caster, get_player().hp * (0.3 - ctx.level * 0.1), true)
            return nil
        end
    }
});