67 lines
1.9 KiB
C++
67 lines
1.9 KiB
C++
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#include <SDL.h>
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#include <unordered_set>
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extern "C" {
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#include <lua.h>
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#include <lualib.h>
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#include <lauxlib.h>
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}
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#include "input.h"
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static std::unordered_set<int> heldKeys;
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void process_input(SDL_Keysym &keysym, bool down, lua_State *luaState) {
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lua_getglobal(luaState, "engine");
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if (lua_istable(luaState, -1)) {
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int scancode = keysym.scancode;
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if (down) {
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lua_getfield(luaState, -1, "KeyDown");
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if (lua_isfunction(luaState, -1)) {
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lua_pushinteger(luaState, scancode);
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if (lua_pcall(luaState, 1, 0, 0) != LUA_OK) {
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const char* error = lua_tostring(luaState, -1);
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std::cerr << "Lua error in engine.KeyDown: " << error << std::endl;
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}
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}
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if (heldKeys.find(scancode) == heldKeys.end()){
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heldKeys.insert(scancode);
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lua_pop(luaState, 1);
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lua_getfield(luaState, -1, "KeyPressed");
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if (lua_isfunction(luaState, -1)) {
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lua_pushinteger(luaState, scancode);
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if (lua_pcall(luaState, 1, 0, 0) != LUA_OK) {
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const char* error = lua_tostring(luaState, -1);
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std::cerr << "Lua error in engine.KeyPressed: " << error << std::endl;
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}
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}
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}
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}
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else
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{
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lua_getfield(luaState, -1, "KeyReleased");
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if (lua_isfunction(luaState, -1)) {
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lua_pushinteger(luaState, scancode);
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if (lua_pcall(luaState, 1, 0, 0) != LUA_OK) {
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const char* error = lua_tostring(luaState, -1);
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std::cerr << "Lua error in engine.KeyReleased: " << error << std::endl;
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}
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}
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heldKeys.erase(scancode);
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}
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}
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lua_pop(luaState, 1);
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}
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