55 lines
2.2 KiB
Lua
55 lines
2.2 KiB
Lua
-- =====================================================================
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-- lib-core.render — Tile-Grid Rendering (P.0)
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-- See: meta/docs/superpowers/specs/2026-05-09-p0-lib-render-design.md
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--
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-- Scope: colored-quads only. Texture-rendering, PROTOTYPE-Lib-Pattern,
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-- camera, layers, post-processing, parallax, shaders, hot-reload —
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-- alle DEPRECATED-MVP, kommen in späteren Slices.
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-- =====================================================================
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local maps = require("lib-core.maps")
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local FALLBACK_COLOR = {255, 0, 255} -- magenta — "missing color" debug-marker
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-- Reads tile-color from TileType-table; fallback to magenta if missing or malformed.
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local function tile_color(tile_type)
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local c = tile_type.color
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if type(c) ~= "table" or #c < 3 then return FALLBACK_COLOR end
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return c
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end
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local M = {}
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-- Iterates current (or specified) map's tiles, draws a colored rect per tile.
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-- Must be called from inside a render hook (engine.render.* enforces this).
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-- Returns the number of tiles drawn (for smoke verification + debug).
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function M.draw_map(map_id)
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local size = maps.size(map_id)
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local tile_size = maps.tile_size(map_id)
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local count = 0
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for ty = 0, size.h - 1 do
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for tx = 0, size.w - 1 do
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local t = maps.tile_at(map_id, tx, ty)
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if t ~= nil then
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local c = tile_color(t)
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local color = engine.render.rgb(c[1], c[2], c[3])
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engine.render.draw_rect(
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tx * tile_size, ty * tile_size,
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tile_size, tile_size,
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color)
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count = count + 1
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end
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end
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end
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return count
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end
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-- Forward-compat stubs for later slices (kept as comments to avoid table-pollution):
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-- DEPRECATED-MVP: function M.draw_sprites(...) -- texture-slice
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-- DEPRECATED-MVP: function M.set_camera(camera) -- lib-core.camera slice
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-- DEPRECATED-MVP: function M.push_layer(name, order) -- multi-layer slice
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-- DEPRECATED-MVP: function M.register_pass(...) -- post-processing slice (spec §6)
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-- DEPRECATED-MVP: function M.set_clear_color(rgb) -- per-layer clear-color (spec §4)
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return M
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