wanp/townengine
2
1
Fork 0
Code Issues 6 Pull Requests Packages Projects Releases Wiki Activity

/apps/demos/crawl: cleanup, document

Browse Source
This commit is contained in:
veclavtalica 2025-02-25 22:20:35 +03:00
parent 9f0d15b9f6
commit 6b2901be28
3 changed files with 60 additions and 50 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
apps/demos/crawl/data/scripts/game.lua
View File

@ -28,19 +28,23 @@ function game_tick()
input_action { control = "S", name = "walk_backward" } input_action { control = "S", name = "walk_backward" }
if input_action_just_released { name = "turn_left" } then if input_action_just_released { name = "turn_left" } then
ctx.udata.player.direction = { x = ctx.udata.player.direction.z, y = ctx.udata.player.direction.y, z = -ctx.udata.player.direction.x } ctx.udata.player.direction = { x = ctx.udata.player.direction.z,
y = ctx.udata.player.direction.y,
z =-ctx.udata.player.direction.x }
end end
if input_action_just_released { name = "turn_right" } then if input_action_just_released { name = "turn_right" } then
ctx.udata.player.direction = { x = -ctx.udata.player.direction.z, y = ctx.udata.player.direction.y, z = ctx.udata.player.direction.x } ctx.udata.player.direction = { x =-ctx.udata.player.direction.z,
y = ctx.udata.player.direction.y,
z = ctx.udata.player.direction.x }
end end
local move = { x = 0, y = 0 } local move = { x = 0, y = 0 }
if input_action_just_released { name = "walk_forward" } then if input_action_just_released { name = "walk_forward" } then
move = { x = move.x + ctx.udata.player.direction.z, y = move.y + ctx.udata.player.direction.x } move = { x = move.x + ctx.udata.player.direction.x, y = move.y + ctx.udata.player.direction.z }
end end
if input_action_just_released { name = "walk_backward" } then if input_action_just_released { name = "walk_backward" } then
move = { x = move.x - ctx.udata.player.direction.z, y = move.y - ctx.udata.player.direction.x } move = { x = move.x - ctx.udata.player.direction.x, y = move.y - ctx.udata.player.direction.z }
end end
if ctx.udata.level.grid[ctx.udata.player.position.y + move.y][ctx.udata.player.position.x + move.x].solid ~= nil then if ctx.udata.level.grid[ctx.udata.player.position.y + move.y][ctx.udata.player.position.x + move.x].solid ~= nil then
@ -56,9 +60,9 @@ function game_tick()
draw_camera { draw_camera {
position = { position = {
x = ctx.udata.player.position_lerp.y + 0.5 - ctx.udata.player.direction.x / 2, x = ctx.udata.player.position_lerp.x + 0.5 - ctx.udata.player.direction.x / 2,
y = 0.5, y = 0.5,
z = ctx.udata.player.position_lerp.x + 0.5 - ctx.udata.player.direction.z / 2, z = ctx.udata.player.position_lerp.y + 0.5 - ctx.udata.player.direction.z / 2,
}, },
direction = ctx.udata.player.direction_lerp, direction = ctx.udata.player.direction_lerp,
} }

20
apps/demos/crawl/data/scripts/level.lua
View File

@ -3,14 +3,20 @@ function load_level(file)
local f = file_read { file = file } local f = file_read { file = file }
local result = { local result = {
-- templates to fill the grid with
classes = { classes = {
-- predefined empty tile
void = { }, void = { },
}, },
-- symbol to class lookup table
glossary = { glossary = {
[" "] = "void", [" "] = "void",
}, },
-- grid consists of expanded classes, of size dimensions
grid = {}, grid = {},
-- map consists of original rows of symbols that the grid is constructed from
map = {}, map = {},
-- maximum extends of the map, unspecified tiles are filled with "void"
size = { x = 0, y = 0 }, size = { x = 0, y = 0 },
} }
@ -28,14 +34,10 @@ function load_level(file)
section = line:sub(2); subsection = "none" section = line:sub(2); subsection = "none"
-- decode map one line at a time -- decode map one line at a time
elseif section == "map" then elseif section == "map" then
local l = #result.map + 1
if result.size.x < #line then if result.size.x < #line then
result.size.x = #line result.size.x = #line
end end
result.map[l] = {} result.map[#result.map + 1] = line
for i = 1, #line do
result.map[l][i] = line:sub(i,i)
end
-- templates to expand -- templates to expand
elseif section == "classes" then elseif section == "classes" then
-- properties -- properties
@ -61,14 +63,16 @@ function load_level(file)
from = limit + 1 from = limit + 1
start, limit = string.find(f, "\n", from) start, limit = string.find(f, "\n", from)
end end
-- post process -- post process, expand map to grid
for y = 1, #result.map do for y = 1, #result.map do
result.grid[y] = {} result.grid[y] = {}
for x = 1, result.size.x do for x = 1, result.size.x do
-- past defined for line -- past defined for line
local symbol local symbol
if x > #result.map[y] then symbol = " " if x > #result.map[y] then
else symbol = result.map[y][x] symbol = " "
else
symbol = result.map[y]:sub(x,x)
end end
local class = result.classes[result.glossary[symbol]] local class = result.classes[result.glossary[symbol]]
if class["unique"] ~= nil then if class["unique"] ~= nil then

74
apps/demos/crawl/data/scripts/render.lua
View File

@ -1,56 +1,57 @@
-- if this is too wasteful, one could check nerby tiles to see whether faces could be visible
-- more robust solution would be to travel the level from observer point of view
function render_dungeon(dungeon) function render_dungeon(dungeon)
for y = 1, dungeon.size.y do for y = 1, dungeon.size.y do
for x = 1, dungeon.size.x do for x = 1, dungeon.size.x do
if dungeon.grid[y][x].wall_texture ~= nil then if dungeon.grid[y][x].wall_texture ~= nil then
draw_quad { draw_quad {
texture = dungeon.grid[y][x].wall_texture, texture = dungeon.grid[y][x].wall_texture,
v3 = { x = y, y = 1, z = x }, v3 = { x = x, y = 1, z = y },
v2 = { x = y, y = 0, z = x }, v2 = { x = x, y = 0, z = y },
v1 = { x = y + 1, y = 0, z = x }, v1 = { x = x + 1, y = 0, z = y },
v0 = { x = y + 1, y = 1, z = x }, v0 = { x = x + 1, y = 1, z = y },
texture_region = { w = 128, h = 128 }, texture_region = { w = 128, h = 128 },
} }
draw_quad { draw_quad {
texture = dungeon.grid[y][x].wall_texture, texture = dungeon.grid[y][x].wall_texture,
v3 = { x = y + 1, y = 1, z = x }, v3 = { x = x + 1, y = 1, z = y },
v2 = { x = y + 1, y = 0, z = x }, v2 = { x = x + 1, y = 0, z = y },
v1 = { x = y + 1, y = 0, z = x + 1 }, v1 = { x = x + 1, y = 0, z = y + 1 },
v0 = { x = y + 1, y = 1, z = x + 1 }, v0 = { x = x + 1, y = 1, z = y + 1 },
texture_region = { w = 128, h = 128 }, texture_region = { w = 128, h = 128 },
} }
draw_quad { draw_quad {
texture = dungeon.grid[y][x].wall_texture, texture = dungeon.grid[y][x].wall_texture,
v3 = { x = y + 1, y = 1, z = x + 1 }, v3 = { x = x + 1, y = 1, z = y + 1 },
v2 = { x = y + 1, y = 0, z = x + 1 }, v2 = { x = x + 1, y = 0, z = y + 1 },
v1 = { x = y, y = 0, z = x + 1 }, v1 = { x = x, y = 0, z = y + 1 },
v0 = { x = y, y = 1, z = x + 1 }, v0 = { x = x, y = 1, z = y + 1 },
texture_region = { w = 128, h = 128 }, texture_region = { w = 128, h = 128 },
} }
draw_quad { draw_quad {
texture = dungeon.grid[y][x].wall_texture, texture = dungeon.grid[y][x].wall_texture,
v3 = { x = y, y = 1, z = x + 1 }, v3 = { x = x, y = 1, z = y + 1 },
v2 = { x = y, y = 0, z = x + 1 }, v2 = { x = x, y = 0, z = y + 1 },
v1 = { x = y, y = 0, z = x }, v1 = { x = x, y = 0, z = y },
v0 = { x = y, y = 1, z = x }, v0 = { x = x, y = 1, z = y },
texture_region = { w = 128, h = 128 }, texture_region = { w = 128, h = 128 },
} }
elseif dungeon.grid[y][x].tile_texture ~= nil then elseif dungeon.grid[y][x].tile_texture ~= nil then
draw_quad { draw_quad {
texture = dungeon.grid[y][x].tile_texture, texture = dungeon.grid[y][x].tile_texture,
v0 = { x = y + 1, y = 0, z = x }, v0 = { x = x + 1, y = 0, z = y },
v1 = { x = y, y = 0, z = x }, v1 = { x = x, y = 0, z = y },
v2 = { x = y, y = 0, z = x + 1 }, v2 = { x = x, y = 0, z = y + 1 },
v3 = { x = y + 1, y = 0, z = x + 1}, v3 = { x = x + 1, y = 0, z = y + 1},
texture_region = { w = 128, h = 128 }, texture_region = { w = 128, h = 128 },
} }
draw_quad { draw_quad {
texture = dungeon.grid[y][x].tile_texture, texture = dungeon.grid[y][x].tile_texture,
v3 = { x = y + 1, y = 1, z = x }, v3 = { x = x + 1, y = 1, z = y },
v2 = { x = y, y = 1, z = x }, v2 = { x = x, y = 1, z = y },
v1 = { x = y, y = 1, z = x + 1 }, v1 = { x = x, y = 1, z = y + 1 },
v0 = { x = y + 1, y = 1, z = x + 1}, v0 = { x = x + 1, y = 1, z = y + 1},
texture_region = { w = 128, h = 128 }, texture_region = { w = 128, h = 128 },
} }
end end
@ -59,24 +60,25 @@ function render_dungeon(dungeon)
if dungeon.grid[y][x].face == "horizon" then if dungeon.grid[y][x].face == "horizon" then
draw_quad { draw_quad {
texture = dungeon.grid[y][x].face_texture, texture = dungeon.grid[y][x].face_texture,
v3 = { x = y, y = 1, z = x + 1 }, v3 = { x = x + 1, y = 1, z = y },
v2 = { x = y, y = 0, z = x + 1 }, v2 = { x = x + 1, y = 0, z = y },
v1 = { x = y + 1, y = 0, z = x + 1 }, v1 = { x = x + 1, y = 0, z = y + 1 },
v0 = { x = y + 1, y = 1, z = x + 1 }, v0 = { x = x + 1, y = 1, z = y + 1 },
texture_region = { w = 64, h = 96 }, texture_region = { w = 64, h = 64 },
} }
draw_quad { draw_quad {
texture = dungeon.grid[y][x].face_texture, texture = dungeon.grid[y][x].face_texture,
v3 = { x = y + 1, y = 1, z = x + 1 }, v3 = { x = x, y = 1, z = y + 1 },
v2 = { x = y + 1, y = 0, z = x + 1 }, v2 = { x = x, y = 0, z = y + 1 },
v1 = { x = y, y = 0, z = x + 1 }, v1 = { x = x, y = 0, z = y },
v0 = { x = y, y = 1, z = x + 1 }, v0 = { x = x, y = 1, z = y },
texture_region = { w = 64, h = 96 }, texture_region = { w = 64, h = 64 },
} }
elseif dungeon.grid[y][x].face == "observer" then elseif dungeon.grid[y][x].face == "observer" then
draw_billboard { draw_billboard {
texture = dungeon.grid[y][x].face_texture, texture = dungeon.grid[y][x].face_texture,
position = { x = y + 0.5, y = 0.5, z = x + 0.5 }, position = { x = x + 0.5, y = 0.5, z = y + 0.5 },
size = { x = 0.5, y = 0.5 }, size = { x = 0.5, y = 0.5 },
} }
end end