eco2d/code/game/src/platform_raylib.c

#include "platform.h"
#include "raylib.h"
#include "raymath.h"
#include "network.h"
#include "game.h"
#include "entity_view.h"
#include "prediction.h"
#include "camera.h"
#include "math.h"
#include "world/blocks.h"
#include "assets.h"
#include "profiler.h"
#include "debug_ui.h"
#include "utils/raylib_helpers.h"

static uint16_t screenWidth = 1600;
static uint16_t screenHeight = 900;
static float target_zoom = 1.5f;
static bool request_shutdown;

#define GFX_KIND 2
#include "renderer_bridge.c"

// NOTE(zaklaus): add-ins
#include "gui/build_mode.c"
#include "gui/inventory.c"

void platform_init() {
    SetTraceLogLevel(LOG_ERROR);
    InitWindow(screenWidth, screenHeight, "eco2d");
    SetWindowState(/*FLAG_WINDOW_UNDECORATED|*/FLAG_WINDOW_MAXIMIZED|FLAG_WINDOW_RESIZABLE|FLAG_MSAA_4X_HINT);
    
    screenWidth = (uint16_t)GetScreenWidth();
    screenHeight = (uint16_t)GetScreenHeight();
    // ToggleFullscreen();
    // SetTargetFPS(60.0);
    
    renderer_init();
}

inline static
void display_conn_status() {
    if (game_is_networked()) {
        if (network_client_is_connected()) {
            DrawText("Connection: online", 5, 5, 12, GREEN);
        } else {
            DrawText("Connection: offline", 5, 5, 12, RED);
        }
    } else {
        DrawText("Connection: single-player", 5, 5, 12, BLUE);
    }
}

void platform_shutdown() {
    renderer_shutdown();
    CloseWindow();
}

uint8_t platform_is_running() {
    return !WindowShouldClose();
}

static game_keystate_data last_input_data = {0};

inline static
void platform_input_update_input_frame(game_keystate_data data) {
    // NOTE(zaklaus): Test if there are any changes
    if (data.x != last_input_data.x) goto send_data;
    if (data.y != last_input_data.y) goto send_data;
    if (data.use != last_input_data.use) goto send_data;
    if (data.sprint != last_input_data.sprint) goto send_data;
    if (data.ctrl != last_input_data.ctrl) goto send_data;
    if (data.selected_item != last_input_data.selected_item) goto send_data;
    if (data.drop != last_input_data.drop) goto send_data;
    if (data.swap != last_input_data.swap) goto send_data;
    if (data.swap_from != last_input_data.swap_from) goto send_data;
    if (data.swap_to != last_input_data.swap_to) goto send_data;
    if (data.placement_num != last_input_data.placement_num) goto send_data;
    if (zpl_memcompare(data.placements, last_input_data.placements, zpl_size_of(data.placements))) goto send_data;
    return;
    
    send_data:
    last_input_data = data;
    game_action_send_keystate(&data);
}

void platform_input() {
    float mouse_z = (GetMouseWheelMove()*0.5f);
    
    if (mouse_z != 0.0f) {
        target_zoom = zpl_clamp(target_zoom+mouse_z, 0.1f, 10.0f);
    }
    
    // NOTE(zaklaus): keystate handling
    {
        float x=0.0f, y=0.0f;
        uint8_t use, sprint, drop, ctrl;
        if (IsKeyDown(KEY_RIGHT) || IsKeyDown(KEY_D)) x += 1.0f;
        if (IsKeyDown(KEY_LEFT) || IsKeyDown(KEY_A)) x -= 1.0f;
        if (IsKeyDown(KEY_UP) || IsKeyDown(KEY_W)) y += 1.0f;
        if (IsKeyDown(KEY_DOWN) || IsKeyDown(KEY_S)) y -= 1.0f;
        
        use = IsKeyPressed(KEY_SPACE);
        sprint = IsKeyDown(KEY_LEFT_SHIFT) || IsKeyDown(KEY_RIGHT_SHIFT);
        ctrl = IsKeyDown(KEY_LEFT_CONTROL) || IsKeyDown(KEY_RIGHT_CONTROL);
        drop = IsKeyPressed(KEY_G) || inv_drop_item;
        
        // NOTE(zaklaus): NEW! mouse movement
        Vector2 mouse_pos = GetMousePosition();
        mouse_pos.x /= screenWidth;
        mouse_pos.y /= screenHeight;
        mouse_pos.x -= 0.5f;
        mouse_pos.y -= 0.5f;
        mouse_pos = Vector2Normalize(mouse_pos);
        
        if (game_get_kind() == GAMEKIND_SINGLE && IsMouseButtonDown(MOUSE_MIDDLE_BUTTON)) {
            x = mouse_pos.x;
            y = -mouse_pos.y;
        }
        
        game_keystate_data in_data = {
            .x = x,
            .y = y,
            .mx = mouse_pos.x,
            .my = mouse_pos.y,
            .use = use,
            .sprint = sprint,
            .ctrl = ctrl,
            
            .drop = drop,
            .selected_item = inv_selected_item,
            .swap = inv_swap,
            .swap_from = inv_swap_from,
            .swap_to = inv_swap_to,
        };
        
        if (build_submit_placements) {
            in_data.placement_num = build_num_placements;
            zpl_memcopy(in_data.placements, build_placements, build_num_placements*zpl_size_of(item_placement));
        }
        
        platform_input_update_input_frame(in_data);
    }
    
    // NOTE(zaklaus): cycle through viewers
    {
        if (IsKeyPressed(KEY_Q)) {
            game_world_view_cycle_active(-1);
        }
        else if (IsKeyPressed(KEY_E)) {
            game_world_view_cycle_active(1);
        }
    }
    
    // NOTE(zaklaus): switch render modes
    {
        if (IsKeyPressed(KEY_O)) {
            renderer_switch(1-gfx_kind);
        }
    }
    
    // NOTE(zaklaus): toggle debug drawing
#ifndef ECO2D_PROD
    {
        if (IsKeyPressed(KEY_T)) {
            debug_draw_enable(!debug_draw_state());
        }
    }
#endif
}

void platform_render() {
    screenWidth = (uint16_t)GetScreenWidth();
    screenHeight = (uint16_t)GetScreenHeight();
    
    profile(PROF_ENTITY_LERP) {
        game_world_view_active_entity_map(lerp_entity_positions);
        game_world_view_active_entity_map(do_entity_fadeinout);
    }
    
    assets_frame();
    
    BeginDrawing();
    {
        profile (PROF_RENDER) {
            renderer_draw();
        }
        renderer_debug_draw();
        {
            // NOTE(zaklaus): add-ins
            buildmode_draw();
            inventory_draw();
        }
        display_conn_status();
        debug_draw();
    }
    EndDrawing();
    
    if (request_shutdown) {
        CloseWindow();
    }
}

float platform_frametime() {
    return GetFrameTime();
}

float platform_zoom_get(void) {
    return target_zoom;
}

void platform_request_close(void) {
    request_shutdown = true;
}