working on bowling demo -- problem with destroying first instance of a loaded model

git-svn-id: svn://anubis/anaglym/trunk@206 99a6e188-d820-4881-8870-2d33a10e2619

Engine.cc

@@ -510,6 +510,23 @@ GLuint Engine::loadTexture(const char * name)
     return m_textureCache.load(path, *m_fileLoader);
 }
 
+GLuint Engine::startList()
+{
+    GLuint list = glGenLists(1);
+    glNewList(list, GL_COMPILE);
+    return list;
+}
+
+void Engine::endList()
+{
+    glEndList();
+}
+
+void Engine::callList(GLuint list)
+{
+    glCallList(list);
+}
+
 void Engine::debug_hook(lua_Debug * debug)
 {
     Uint32 ticks = SDL_GetTicks();

Engine.h

@@ -144,6 +144,10 @@ class Engine
         {
             m_world.setGravity(gx, gy, gz);
         }
+        GLuint startList();
+        void endList();
+        void drawList(GLuint list);
+        void callList(GLuint list);
 
         void getScreenSize(int * width, int * height);
         void drawText(const char * text, GLfloat r, GLfloat g, GLfloat b,

ag.cc

@@ -21,6 +21,7 @@ namespace ag
     void register_functions(lua_State * L)
     {
         static const luaL_Reg functions[] = {
+            { "callList", callList },
             { "clearEventHandler", clearEventHandler },
             { "doPhysics", doPhysics },
             { "drawArc", drawArc },
@@ -33,6 +34,7 @@ namespace ag
             { "drawText", drawText },
             { "elapsedTime", elapsedTime },
             { "endFrame", endFrame },
+            { "endList", endList },
             { "exit", exit },
             { "fillRect", fillRect },
             { "getCamera", getCamera },
@@ -54,6 +56,7 @@ namespace ag
             { "setGravity", setGravity },
 //            { "sleep", sleep },
             { "startFrame", startFrame },
+            { "startList", startList },
 
             /* managed object functions */
             { "createBox", createBox },
@@ -753,6 +756,29 @@ namespace ag
         return createCapsuleSpecify(L, true);
     }
 
+    int startList(lua_State * L)
+    {
+        GLuint list = g_engine->startList();
+        lua_pushnumber(L, list);
+        return 1;
+    }
+
+    int endList(lua_State * L)
+    {
+        g_engine->endList();
+        return 0;
+    }
+
+    int callList(lua_State * L)
+    {
+        int argc = lua_gettop(L);
+        if (argc == 1 && lua_isnumber(L, 1))
+        {
+            g_engine->callList(lua_tointeger(L, 1));
+        }
+        return 0;
+    }
+
     namespace object
     {
         static Engine::Object * getObject(lua_State * L, int index)

ag.h

@@ -9,11 +9,13 @@ namespace ag
     void register_functions(lua_State * L);
 
     /* Lua interfaces */
+    int callList(lua_State * L);
     int clearEventHandler(lua_State * L);
     int doPhysics(lua_State * L);
     int drawObjects(lua_State * L);
     int elapsedTime(lua_State * L);
     int endFrame(lua_State * L);
+    int endList(lua_State * L);
     int exit(lua_State * L);
     int getCamera(lua_State * L);
     int getScreenSize(lua_State * L);
@@ -33,6 +35,7 @@ namespace ag
     int setGravity(lua_State * L);
     int sleep(lua_State * L);
     int startFrame(lua_State * L);
+    int startList(lua_State * L);
 
     /* 2D overlay functions */
     int drawArc(lua_State * L);

lib/demo/bowling.lua

@@ -1,41 +1,59 @@
 
-function setupPins()
+ag.import("std")
+
+function resetPins()
+    local head_x = 0
+    local head_y = 15
+    local spacing = 0.7
     for i = 1, 10 do
         if (pins[i] ~= nil) then
             pins[i]:destroy()
         end
     end
+    local n = 1
+    for row = 0, 4 do
+        for j = 0, row do
+            pins[n] = reference_pin:clone()
+            pins[n]:setPosition(head_x - row * spacing / 2 + j * spacing,
+                head_y + 0.866 * spacing * row,
+                1 - pin_minz)
+        end
+    end
 end
 
 function setupStars()
-    stars = {}
+    stars = ag.startList()
     local dist = 500
-    for i = 1, 1000 do
-        local star = {}
+    for i = 1, 500 do
         local rx = math.random() * math.pi * 2
         local ry = (math.random() - 0.5) * math.pi
-        star.x = dist * math.cos(ry) * math.cos(rx)
-        star.y = dist * math.cos(ry) * math.sin(rx)
-        star.z = dist * math.sin(ry)
-        star.size = math.random(2, 8)
-        stars[i] = star
-    end
-end
-
-function drawStars()
-    for i = 1, #stars do
-        ag.drawPoint(stars[i].size, 1, 1, 1, stars[i].x, stars[i].y, stars[i].z)
+        local x = dist * math.cos(ry) * math.cos(rx)
+        local y = dist * math.cos(ry) * math.sin(rx)
+        local z = dist * math.sin(ry)
+        local size = math.random(1, 6)
+        ag.drawPoint(size, 1, 1, 1, x, y, z)
     end
+    ag.endList()
 end
 
 function init_event()
-    pins = {}
     lane = ag.loadModelStatic("bowling_lane")
-    setupPins()
+    local minx, miny, minz, maxx, maxy, maxz = lane:getAABB()
+    local lane_bottom = minz
+    pins = {}
+    reference_pin = ag.loadModel("bowling_pin", 1.0/4.3)
+    minx, miny, minz, maxx, maxy, maxz = reference_pin:getAABB()
+    pin_minz = minz
+    pin_maxz = maxz
+    local box = ag.createBoxStatic(1, 1, 0.1)
+    box:setColor(0, 0, 0)
+    box:setPosition(0, 0, lane_bottom - (maxz - minz) - 0.4)
+    reference_pin:setPosition(0, 0, lane_bottom - maxz - 0.1)
+    resetPins()
     setupStars()
-    ag.setCamera(0, -20, 5, 0, 20, 0)
+    ag.setCamera(0, -10, 5, 0, 20, 0)
 end
 
 function update_event()
-    drawStars()
+    ag.callList(stars)
 end

lib/std.lua

@@ -74,19 +74,23 @@ std.loadModelBounds = function(model_name, max_x, max_y, max_z)
     local sx, sy, sz = tmp_model:getSize()
     tmp_model:destroy()
     local scale = 1.0
+    local scale_set = false
     if (max_x > 0 and sx > 0) then
         scale = max_x / sx
+        scale_set = true
     end
     if (max_y > 0 and sy > 0) then
         local s = max_y / sy
-        if (s < scale) then
+        if (s < scale or not scale_set) then
             scale = s
+            scale_set = true
         end
     end
     if (max_z > 0 and sz > 0) then
         local s = max_z / sz
-        if (s < scale) then
+        if (s < scale or not scale_set) then
             scale = s
+            scale_set = true
         end
     end
     return ag.loadModel(model_name, scale)

tests/destroy.lua

@@ -0,0 +1,8 @@
+
+ag.setCamera(0, -5, 0)
+pin = ag.loadModel("bowling_pin")
+pin:setPosition(-1.5, 0, 0)
+pin2 = ag.loadModel("bowling_pin")
+pin3 = ag.loadModel("bowling_pin")
+pin3:setPosition(1.5, 0, 0)
+pin:destroy()