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Windows Lua build instructions.

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This commit is contained in:
jussi
2022-05-31 00:31:39 +03:00
parent 381adb3ba2
commit b1bb77e139
5 changed files with 153 additions and 12 deletions
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10
examples/platformer/main.lua
View File

@@ -103,7 +103,7 @@ end
local function tileCollision( entity )
local vPos = entity.pos + entity.vel -- Future pos with current vel.
local vRect = util.tableClone( entity.colRect )
local tinySlit = 0.001 -- Tiny slit between collisionRect and tile to prevent getting stuck on all seams.
local tinyGap = 0.001 -- Tiny slit between collisionRect and tile to prevent getting stuck on all seams.
-- Move test rect to predicted position.
vRect[1] = vPos.x - vRect[3] / 2
@@ -121,14 +121,14 @@ local function tileCollision( entity )
if isTileWall( Vec2:new( tileRect[3], y ) ) then
-- Use new_x to push out of tile.
local new_x = tileRect[3] * TILE_SIZE - ( entity.colRect[1] + entity.colRect[3] )
entity.vel.x = new_x - tinySlit
entity.vel.x = new_x - tinyGap
break
end
elseif entity.vel.x < 0 then
if isTileWall( Vec2:new( tileRect[1], y ) ) then
local new_x = ( tileRect[1] * TILE_SIZE + TILE_SIZE ) - entity.colRect[1]
entity.vel.x = new_x + tinySlit, 0
entity.vel.x = new_x + tinyGap, 0
break
end
@@ -151,7 +151,7 @@ local function tileCollision( entity )
if isTileWall( Vec2:new( x, tileRect[4] ) ) then
local new_y = tileRect[4] * TILE_SIZE - ( entity.colRect[2] + entity.colRect[4] )
-- math.max prevents bounce when hitting right on the corner.
entity.vel.y = math.max( new_y - tinySlit, 0 )
entity.vel.y = math.max( new_y - tinyGap, 0 )
player.onFloor = true
break
@@ -159,7 +159,7 @@ local function tileCollision( entity )
elseif entity.vel.y < 0 then
if isTileWall( Vec2:new( x, tileRect[2] ) ) then
local new_y = ( tileRect[2] * TILE_SIZE + TILE_SIZE ) - entity.colRect[2]
entity.vel.y = new_y + tinySlit
entity.vel.y = new_y + tinyGap
break
end

122
examples/point_triangle_collision/main.lua Normal file
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@@ -0,0 +1,122 @@
package.path = package.path..";"..RL_GetBasePath().."../resources/lib/?.lua"
util = require "utillib"
Vec2 = require "vector2"
Vec3 = require "vector3"
local MOVE_SPEED = 0.5
local monitor = 0
local camera = -1
local texture = -1
local tri = {
a = Vec3:new( 0, 0, 0 ),
-- a = Vec3:new( 0, 1, 0 ),
b = Vec3:new( 0, 0, 2 ),
c = Vec3:new( 1, 0, 0 ),
normal = Vec3:new( 0, 0, 0 ),
}
local point = {
pos = Vec3:new( 0.2, 0.3, 0.2 ),
radius = 0.05,
lineLen = 0.5,
color = RED,
}
local debugText = ""
local function calcNormal( tri )
tri.normal = Vec3:new( RL_Vector3Normalize( RL_Vector3CrossProduct( tri.b - tri.a, tri.c - tri.a ) ) )
end
function init()
local mPos = RL_GetMonitorPosition( monitor )
local mSize = RL_GetMonitorSize( monitor )
local winSize = { 1920, 1080 }
RL_SetWindowState( FLAG_WINDOW_RESIZABLE )
RL_SetWindowPosition( { mPos[1] + mSize[1] / 2 - winSize[1] / 2, mPos[2] + mSize[2] / 2 - winSize[2] / 2 } )
RL_SetWindowSize( winSize )
camera = RL_CreateCamera3D()
RL_SetCamera3DPosition( camera, { 0, 1, 2 } )
RL_SetCamera3DTarget( camera, { 0, 0, 0 } )
RL_SetCamera3DUp( camera, { 0, 2, 0 } )
RL_SetCamera3DMode( camera, CAMERA_FREE )
calcNormal( tri )
end
local function checkCollisionPointTriangle( p, a, b, c, n )
local result = Vec3:new( 0, 0, 0 )
local v0 = Vec3:new( b.x - a.x, b.y - a.y, b.z - a.z ) -- Vector3Subtract( b, a )
local v1 = Vec3:new( c.x - a.x, c.y - a.y, c.z - a.z ) -- Vector3Subtract( c, a )
local v2 = Vec3:new( p.x - a.x, p.y - a.y, p.z - a.z ) -- Vector3Subtract( p, a )
local d00 = v0.x * v0.x + v0.y * v0.y + v0.z * v0.z -- Vector3DotProduct( v0, v0 )
local d01 = v0.x * v1.x + v0.y * v1.y + v0.z * v1.z -- Vector3DotProduct( v0, v1 )
local d11 = v1.x * v1.x + v1.y * v1.y + v1.z * v1.z -- Vector3DotProduct( v1, v1 )
local d20 = v2.x * v0.x + v2.y * v0.y + v2.z * v0.z -- Vector3DotProduct( v2, v0 )
local d21 = v2.x * v1.x + v2.y * v1.y + v2.z * v1.z -- Vector3DotProduct( v2, v1 )
local denom = d00 * d11 - d01 * d01
local distance = v2.x * n.x + v2.y * n.y + v2.z * n.z -- Vector3DotProduct( v2, n )
debugText = debugText.."distance "..distance.."\n"
debugText = debugText.."v0 "..v0.x..", "..v0.y..", "..v0.z.."\n"
debugText = debugText.."v1 "..v1.x..", "..v1.y..", "..v1.z.."\n"
debugText = debugText.."v2 "..v2.x..", "..v2.y..", "..v2.z.."\n"
result.y = ( d11 * d20 - d01 * d21) / denom
result.z = ( d00 * d21 - d01 * d20) / denom
result.x = 1.0 - ( result.z + result.y )
debugText = debugText.."result "..result.x..", "..result.y..", "..result.z.."\n"
return 0.0 < result.x and 0.0 < result.y and 0.0 < result.z and distance < 0.0, distance
end
function process( delta )
debugText = ""
if RL_IsKeyDown( string.byte( "D" ) ) then
point.pos.x = point.pos.x + MOVE_SPEED * delta
elseif RL_IsKeyDown( string.byte( "A" ) ) then
point.pos.x = point.pos.x - MOVE_SPEED * delta
end
if RL_IsKeyDown( string.byte( "S" ) ) then
point.pos.z = point.pos.z + MOVE_SPEED * delta
elseif RL_IsKeyDown( string.byte( "W" ) ) then
point.pos.z = point.pos.z - MOVE_SPEED * delta
end
if RL_IsKeyDown( string.byte( "R" ) ) then
point.pos.y = point.pos.y + MOVE_SPEED * delta
elseif RL_IsKeyDown( string.byte( "F" ) ) then
point.pos.y = point.pos.y - MOVE_SPEED * delta
end
if checkCollisionPointTriangle( point.pos, tri.a, tri.b, tri.c, tri.normal ) then
point.color = RED
else
point.color = GREEN
end
end
function draw()
RL_ClearBackground( { 100, 150, 100 } )
RL_UpdateCamera3D( camera )
RL_BeginMode3D( camera )
RL_DrawGrid( 8, 1 )
RL_DrawTriangle3D( tri.a, tri.b, tri.c, { 200, 100, 100 } )
RL_DrawLine3D( { point.pos.x - point.lineLen, point.pos.y, point.pos.z },
{ point.pos.x + point.lineLen, point.pos.y, point.pos.z }, BLUE )
RL_DrawLine3D( { point.pos.x, point.pos.y - point.lineLen, point.pos.z },
{ point.pos.x, point.pos.y + point.lineLen, point.pos.z }, BLUE )
RL_DrawLine3D( { point.pos.x, point.pos.y, point.pos.z - point.lineLen },
{ point.pos.x, point.pos.y, point.pos.z + point.lineLen }, BLUE )
RL_DrawSphereWires( point.pos, point.radius, 3, 8, point.color )
RL_EndMode3D()
RL_DrawText( 0, debugText, { 10, 10 }, 30, 4, WHITE )
end

1
examples/pong/main.lua
View File

@@ -34,6 +34,7 @@ local function reset()
-- Set ball to center.
ball.pos = { winSize[1] / 2, winSize[2] / 2 }
-- Short for if math random result 1, set BALL_SPEED otherwise set -BALL_SPEED.
-- Could be replaced by normal if statement for easier readability.
ball.vel[1] = math.random( 0, 1 ) == 1 and BALL_SPEED or -BALL_SPEED
-- Start slow.
ball.vel[2] = 0

3
examples/pong_vec/main.lua
View File

@@ -40,6 +40,7 @@ local function reset()
-- Set ball to center.
ball.pos:set( winSize.x / 2, winSize.y / 2 )
-- Short for if math random result 1, set BALL_SPEED otherwise set -BALL_SPEED.
-- Could be replaced by normal if statement for easier readability.
ball.vel.x = math.random( 0, 1 ) == 1 and BALL_SPEED or -BALL_SPEED
-- Start slow.
ball.vel.y = 0
@@ -123,7 +124,7 @@ function draw()
-- Draw ball. Ball position will be the center in drawCircle.
RL_DrawCircle( ball.pos, ball.radius, WHITE )
-- Draw scire
-- Draw score.
RL_DrawText( 0, playerLeft.score, { 50, 10 }, 40, 2, WHITE )
local rightTextSize = Vec2:new( RL_MeasureText( 0, playerRight.score, 40, 2 ) )
RL_DrawText( 0, playerRight.score, { winSize.x - 50 - rightTextSize.x, 10 }, 40, 2, WHITE )