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Add gravity field manipulation to Lua api, move gravity processing to after the particle update (Means a delay of 1 frame, but we get the ability to manipulate the field with Lua)

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This commit is contained in:
Simon Robertshaw
2011-06-01 12:16:33 +01:00
parent 2c8c4bc567
commit 3d600c6955
4 changed files with 82 additions and 13 deletions
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6
build/test.lua
View File

@@ -10,5 +10,9 @@ function do_step()
end
tpt.drawtext(numberthing, 50, "Oh my god, this is amazing", 255, 255, 255, 255)
tpt.drawtext(mousex, mousey, "Oh my god, this is amazing", 255, 255, 255, 255)
return true
tpt.reset_velocity(10, 10, 20, 20)
tpt.reset_gravity_field(10, 10, 20, 20)
tpt.set_pressure(10, 10, 20, 20)
tpt.set_gravity(75, 45, 1, 1, 8)
return false
end

4
includes/luaconsole.h
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@@ -21,7 +21,9 @@ int luatpt_setpause(lua_State* l);
int luatpt_togglepause(lua_State* l);
int luatpt_setconsole(lua_State* l);
int luatpt_log(lua_State* l);
int luatpt_reset_pressure(lua_State* l);
int luatpt_set_pressure(lua_State* l);
int luatpt_set_gravity(lua_State* l);
int luatpt_reset_gravity_field(lua_State* l);
int luatpt_reset_velocity(lua_State* l);
int luatpt_reset_spark(lua_State* l);
int luatpt_set_property(lua_State* l);

71
src/luaconsole.c
View File

@@ -14,7 +14,9 @@ void luacon_open(){
{"toggle_pause", &luatpt_togglepause},
{"set_console", &luatpt_setconsole},
{"log", &luatpt_log},
{"reset_pressure", &luatpt_reset_pressure},
{"set_pressure", &luatpt_set_pressure},
{"set_gravity", &luatpt_set_gravity},
{"reset_gravity_field", &luatpt_reset_gravity_field},
{"reset_velocity", &luatpt_reset_velocity},
{"reset_spark", &luatpt_reset_spark},
{"set_property", &luatpt_set_property},
@@ -35,6 +37,7 @@ void luacon_open(){
luaL_openlib(l, "tpt", tptluaapi, 0);
}
int luacon_step(int mx, int my, int mb, int mbq, char key){
int tempret = 0;
if(step_function && step_function[0]){
//Set mouse globals
lua_pushinteger(l, mbq);
@@ -46,8 +49,12 @@ int luacon_step(int mx, int my, int mb, int mbq, char key){
lua_setfield(l, LUA_GLOBALSINDEX, "mouseb");
lua_setfield(l, LUA_GLOBALSINDEX, "mousebq");
lua_getfield(l, LUA_GLOBALSINDEX, step_function);
lua_call(l, 0, 0);
return lua_toboolean(l, -1);
lua_call(l, 0, 1);
if(lua_isboolean(l, -1)){
tempret = lua_toboolean(l, -1);
lua_pop(l, 1);
return tempret;
}
}
return 0;
}
@@ -171,7 +178,7 @@ int luatpt_log(lua_State* l)
return 0;
}
int luatpt_reset_pressure(lua_State* l)
int luatpt_set_pressure(lua_State* l)
{
int nx, ny;
int x1, y1, width, height;
@@ -202,6 +209,62 @@ int luatpt_reset_pressure(lua_State* l)
return 0;
}
int luatpt_set_gravity(lua_State* l)
{
int nx, ny;
int x1, y1, width, height;
float value;
x1 = abs(luaL_optint(l, 1, 0));
y1 = abs(luaL_optint(l, 2, 0));
width = abs(luaL_optint(l, 3, XRES/CELL));
height = abs(luaL_optint(l, 4, YRES/CELL));
value = (float)luaL_optint(l, 5, 0.0f);
if(value > 256.0f)
value = 256.0f;
else if(value < -256.0f)
value = -256.0f;
if(x1 > (XRES/CELL)-1)
x1 = (XRES/CELL)-1;
if(y1 > (YRES/CELL)-1)
y1 = (YRES/CELL)-1;
if(x1+width > (XRES/CELL)-1)
width = (XRES/CELL)-x1;
if(y1+height > (YRES/CELL)-1)
height = (YRES/CELL)-y1;
for (nx = x1; nx<x1+width; nx++)
for (ny = y1; ny<y1+height; ny++)
{
gravmap[ny][nx] = value;
}
return 0;
}
int luatpt_reset_gravity_field(lua_State* l)
{
int nx, ny;
int x1, y1, width, height;
x1 = abs(luaL_optint(l, 1, 0));
y1 = abs(luaL_optint(l, 2, 0));
width = abs(luaL_optint(l, 3, XRES/CELL));
height = abs(luaL_optint(l, 4, YRES/CELL));
if(x1 > (XRES/CELL)-1)
x1 = (XRES/CELL)-1;
if(y1 > (YRES/CELL)-1)
y1 = (YRES/CELL)-1;
if(x1+width > (XRES/CELL)-1)
width = (XRES/CELL)-x1;
if(y1+height > (YRES/CELL)-1)
height = (YRES/CELL)-y1;
for (nx = x1; nx<x1+width; nx++)
for (ny = y1; ny<y1+height; ny++)
{
gravx[ny][nx] = 0;
gravy[ny][nx] = 0;
}
return 0;
}
int luatpt_reset_velocity(lua_State* l)
{
int nx, ny;

12
src/main.c
View File

@@ -1776,6 +1776,12 @@ int main(int argc, char *argv[])
if (bsy<0)
bsy = 0;
if(ngrav_enable)
draw_grav(vid_buf);
draw_walls(vid_buf);
update_particles(vid_buf); //update everything
draw_parts(vid_buf); //draw particles
if(ngrav_enable){
pthread_mutex_lock(&gravmutex);
result = grav_ready;
@@ -1795,12 +1801,6 @@ int main(int argc, char *argv[])
if (!sys_pause||framerender) //Only update if not paused
memset(gravmap, 0, sizeof(gravmap)); //Clear the old gravmap
if(ngrav_enable)
draw_grav(vid_buf);
draw_walls(vid_buf);
update_particles(vid_buf); //update everything
draw_parts(vid_buf); //draw particles
if (cmode==CM_PERS)
{
if (!fire_fc)//fire_fc has nothing to do with fire... it is a counter for diminishing persistent view every 3 frames