-- Copyright (c) 2024 - Ognjen 'xolatile' Milan Robovic
--
-- GNU General Public Licence (version 3 or later)

with core, ui, attribute, skill, resource, material, chad, world;

use type core.point;

package body effect is

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	procedure apply (data : in value) is
		player : chad.value renames world.map.chads (1);
		--
		attribute_index : attribute.enumeration;
		skill_index     : skill.enumeration;
		resource_index  : resource.enumeration;
		material_index  : material.enumeration;
	begin
		case data.kind is
			when idle => null;
			--
			when modify_attribute => attribute_index := attribute.enumeration'val (data.modifier);
			                         player.attributes (attribute_index) := player.attributes (attribute_index) + data.amount;
			                         ui.echo ("Player " & (if data.amount < 0 then "lost" else "gained") & integer'image (abs data.amount) & " "
			                         & core.bound (attribute.description (attribute_index).name) & " attribute points.");
			--
			when modify_skill => skill_index := skill.enumeration'val (data.modifier);
			                     player.skills (skill_index) := player.skills (skill_index) + data.amount;
			                     ui.echo ("Player " & (if data.amount < 0 then "lost" else "gained") & integer'image (abs data.amount) & " "
			                     & core.bound (skill.description (skill_index).name) & " skill points.");
			--
			when modify_resource => resource_index := resource.enumeration'val (data.modifier);
			                         player.resources (resource_index) := player.resources (resource_index) + data.amount;
			                         ui.echo ("Player " & (if data.amount < 0 then "lost" else "gained") & integer'image (abs data.amount) & " "
			                         & core.bound (resource.description (resource_index).name) & " resource points.");
			--
			when modify_material => material_index := material.enumeration'val (data.modifier);
			                        player.materials (material_index) := player.materials (material_index) + data.amount;
			                        ui.echo ("+" & data.amount'image & " " & core.bound (material.description (material_index).name));
		end case;
	end apply;

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end effect;