diff options
Diffstat (limited to 'bin/main.lua')
| -rw-r--r-- | bin/main.lua | 98 |
1 files changed, 39 insertions, 59 deletions
diff --git a/bin/main.lua b/bin/main.lua index 96898cf..eeec09e 100644 --- a/bin/main.lua +++ b/bin/main.lua @@ -1,30 +1,25 @@ -local boundary = { - x = 200, - y = 100, - w = 100, - h = 80, -} - -local bg = { - x = 200, - y = 100, - w = 300, - h = 200 -} -local p = { - x = boundary.x + 10, - y = boundary.y + 10, - speed = 100, -} - +io.stdout:setvbuf("no") +local shader +local img +local img2 +local canvas +local sw, sh = jin.graphics.getSize() function jin.core.onLoad() - + local str = jin.filesystem.read("metaball.shader") + shader = jin.graphics.newShader(str) + local w, h = 256, 240 + local bitmap = jin.graphics.newBitmap(w, h, {255, 255, 0, 255}) + local b = bitmap:clone() + bitmap = nil + -- local bitmap2 = jin.graphics.newBitmap("img2.bmp") + img = jin.graphics.newTexture(b) + -- img2 = jin.graphics.newTexture(bitmap2) + canvas = jin.graphics.newCanvas(200, 200) end - -local function clamp(x, a, b) - return math.min(math.max(x, a), b) -end - +-- extern vec3 iResolution; +-- extern number iGlobalTime; +-- extern vec4 iMouse; +local mx, my = 0, 0 function jin.core.onEvent(e) if e.type == "Quit" then jin.core.stop() @@ -32,41 +27,26 @@ function jin.core.onEvent(e) if e.type == "KeyDown" then if e.key == "Escape" then jin.core.stop() - end - if e.key == "Left" then - p.x = p.x - p.speed - elseif e.key == "Right" then - p.x = p.x + p.speed - elseif e.key == "Up" then - p.y = p.y - p.speed - elseif e.key == "Down" then - p.y = p.y + p.speed end - p.x = clamp(p.x, boundary.x, boundary.x + boundary.w) - p.y = clamp(p.y, boundary.y, boundary.y + boundary.h) - end -end - -local function updateBg() - local x0 = boundary.x - local x1 = boundary.x + boundary.w - local tx = (p.x - x0) / (x1 - x0) - bg.x = tx * (x1 - x0 - bg.w) + x0 - local y0 = boundary.y - local y1 = boundary.y + boundary.h - local ty = (p.y - y0) / (y1 - y0) - bg.y = ty * (y1 - y0 - bg.h) + y0 -end - -function jin.core.onUpdate(dt) - updateBg() + end + if e.type == "MouseMotion" then + -- if e.button == "left" then + mx = e.x + my = e.y + -- end + end end +local dt = 0 function jin.core.onDraw() - jin.graphics.setColor(100, 100, 100, 255) - jin.graphics.rect("fill", bg.x, bg.y, bg.w, bg.h) - jin.graphics.setColor(255,255,255,255) - jin.graphics.rect("line", boundary.x, boundary.y, boundary.w, boundary.h) - jin.graphics.setColor(255,0,0,255) - jin.graphics.rect("fill", p.x, p.y, 3, 3) -end + dt = dt + 0.1 + jin.graphics.bindCanvas(canvas) + jin.graphics.useShader(shader) + shader:sendNumber("iGlobalTime", dt ) + shader:sendVec3("iResolution", {sw, sh, 1}) + shader:sendVec4("iMouse", {mx, my, mx, my}) + jin.graphics.draw(img, 0, 0, 1, 1) + jin.graphics.unuseShader() + jin.graphics.unbindCanvas() + jin.graphics.draw(canvas, 0, 0, 2, 2) +end
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