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Allow for different sprites per layer in :put

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shylie 2025-07-18 20:11:38 -04:00
parent 6eba579c96
commit ccfa075d24
1 changed files with 26 additions and 16 deletions
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42
zprite.lua
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@ -61,7 +61,7 @@ vec4 effect(vec4 color, Image tex, vec2 texture_coords, vec2 screen_coords)
]])
local function ZPRITE_DEFAULT_COLORMAP(_)
return 1, 1, 1, 1
return 1, 1, 1
end
---@param texture love.Image
@ -117,9 +117,9 @@ end
--- Add an 'entity' to be rendered
---@param x number
---@param y number
---@param quad love.Quad
---@param quad love.Quad|fun(layer: integer): love.Quad
---@param layer_count integer
---@param color_map function?
---@param color_map (fun(layer: integer): integer, integer, integer)?
---@param base_layer integer?
function zprite:put(x, y, quad, layer_count, color_map, base_layer)
if #self._instances + layer_count > self._instance_vertex_count then
@ -135,19 +135,6 @@ function zprite:put(x, y, quad, layer_count, color_map, base_layer)
local pos_y = bit.lshift(bit.band(y + 32768, 0xFFFF), 16)
local pos = bit.bor(pos_x, pos_y)
local qx, qy, qw, qh = quad:getViewport()
local tw, th = self._texture:getPixelDimensions()
local uv_x = bit.band(1024 * qx / tw, 0x3FF)
local uv_y = bit.lshift(bit.band(1024 * qy / th, 0x3FF), 10)
local uv = bit.bor(uv_x, uv_y)
local scale_x = bit.lshift(bit.band(qw, 0x3F), 20)
local scale_y = bit.lshift(bit.band(qh, 0x3F), 26)
local scale = bit.bor(scale_x, scale_y)
local uv_scale = bit.bor(uv, scale)
for i = 1, layer_count do
if not self._instances[i + base_layer] then
self._instances[i + base_layer] = {}
@ -161,18 +148,41 @@ function zprite:put(x, y, quad, layer_count, color_map, base_layer)
if r > 1 then
r = 1
end
if r < 0 then
r = 0
end
if g > 1 then
g = 1
end
if g < 0 then
g = 0
end
if b > 1 then
b = 1
end
if b < 0 then
b = 0
end
local rb = bit.lshift(bit.band(r * 0xFF, 0xFF), 8)
local gb = bit.lshift(bit.band(g * 0xFF, 0xFF), 16)
local bb = bit.lshift(bit.band(b * 0xFF, 0xFF), 24)
local layer_rgb = bit.bor(bit.bor(layer, rb), bit.bor(gb, bb))
local q = type(quad) == "function" and quad(layer) or quad
local qx, qy, qw, qh = q:getViewport()
local tw, th = self._texture:getPixelDimensions()
local uv_x = bit.band(1024 * qx / tw, 0x3FF)
local uv_y = bit.lshift(bit.band(1024 * qy / th, 0x3FF), 10)
local uv = bit.bor(uv_x, uv_y)
local scale_x = bit.lshift(bit.band(qw, 0x3F), 20)
local scale_y = bit.lshift(bit.band(qh, 0x3F), 26)
local scale = bit.bor(scale_x, scale_y)
local uv_scale = bit.bor(uv, scale)
table.insert(self._instances[i], { pos, uv_scale, layer_rgb })
self._count = self._count + 1
end